Re: [Lift] Multiple stateful snippets in a page , keeping the common state?
The short answer is no. The slightly longer answer is Can you put both into a single snippet? The even longer answer is Have you tried using Ajax forms so you don't even leave the page? On Tue, Mar 9, 2010 at 10:19 PM, hexa hex...@gmail.com wrote: Hi, I have 2 Stateful snippets in a page : 1. a InvoiceList snippet that 1. If no client RequestVar is present lists all the invoices in the system 2. If a client RequestVar is present lists the invoices for that client 2. a AddInvoice snippet that displays a form and adds an invoice binded on the Client RequestVar.. Now these 2 can share the same RequestVar.. and that's fine for one request And at least in the case of 1 stateful snippet since I set the request var to a class var , it persists after a submit on the AddInvoice... the client persists But for the other snippet .. the state is lost... So is there a way to manage the common states of multiple snippets in a page ? Should I use a SessionVar ? I kinda would prefer not to since It's really not a var that should be persistent over the session The best would be that they both keep their state .. as an action is performed on one of them... Thanks a lot hexa -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: non-Lazy evaluation of bind FuncBindParam functions?
On Wed, Mar 10, 2010 at 7:22 AM, Stuart Roebuck stuart.roeb...@gmail.comwrote:
Okay, so I now understand what is happening a little better.
When I saw a construct like:
bind(example,xhtml,
first_name - SHtml.text(user.first_name, user.first_name(_)),
last_name - SHtml.text(user.last_name, user.last_name(_))
it reminded me of a match with cases and my assumption was that each
match would only be called if and when the match was found. In reality
what appears to happen is that the item on the right hand side of the
- is usually evaluated and then placed into a Map with the String
like first_name being the key.
You're welcome to take up laziness vs. strictness with the EPFL team.
There's only so much we can do to be lazy and it does take extra syntax
(see Ross's reply).
So, if every binding is used in every case there is no big issue here,
but if you have bindings that aren't all used they will none-the-less
be evaluated every time you try to bind.
Also every time the bind function is called a new Map appears to be
generated and indexed in memory which doesn't seem as efficient as it
could be.
There's a sign over a urinal in a mens room at Google that reads Premature
Optimization is the root of all evil. Now, I think that's an
overstatement, but in this case, it's applicable.
Is there an *actual* problem with building a Map()? Can you measure the
problem? Do you have a more efficient solution?
Now, when I wrote that particular code, I was very cognizant of the
performance implications.
The cost of producing the Map() (backed by a HashMap) in the normal case (no
hash collisions) is O(n). Worst case is O(n log n).
For each element we're binding, we have look up the tag of the node to bind.
If we are using our Map(), the look-up time is O(1) (or worst case O(log
n)). If we have n elements that we're binding, the expected cost is O(n)
and worst case is O(n log n).
So, we have an algorithm that normally executes in 2xO(n) and worst case
2xO(n log n).
Now, if we didn't create the Map, we'd have to cycle through the possible
binds and we'd wind up with O(n ^ 2). Even if you have a PartialFunction
(pattern matching) against strings, it's O(n) to match the pattern.
So, would you rather have an O(n) algorithm that can degrade to O(n log n)
and uses marginally more memory or would you rather have an O(n ^ 2)
algorithm that uses marginally less memory?
And if you're worried about the memory used by the Map(), on pre 1.6 build
16 JVMs, the Map will not likely escape the Eden memory pool (which means
very quick GC). On the most recent JVMs, the escape analysis should kick in
and the Map and its elements will be allocated on the heap and never be
subject to GC.
I can't help but wonder whether this could be converted to a form of
match which would then be built at compile time and re-used and would
only evaluate those matches that matched.
In the event that you can create a benchmark and a real-world situation that
actually needs this, please open a ticket. But, I suspect that even if you
pre-created a Map and passed it into bind(), that the performance would be
nearly identical, but we'd have more public APIs to document which seems to
be something that also annoys you.
In the meantime I see that you can convert the code above to:
bind(example,xhtml,
FuncBindParam(first_name, () = SHtml.text(user.first_name,
user.first_name(_)),
FuncBindParam(last_name, () = SHtml.text(user.last_name,
user.last_name(_))
to get a form of lazy evaluation.
On Mar 10, 11:01 am, Stuart Roebuck stuart.roeb...@gmail.com wrote:
I've been trying to figure why some binding is giving me a stack
overflow and I've discovered that if you use the BindHelpers.bind
method with a set of function BindParams, all the functions are
evaluated regardless of whether a match is found.
So, for example, if you bind to an empty NodeSeq and have a BindParam
which will never match like:
you won't find me here - { print(Got here!);
NodeSeq.Empty }
…you find that the print statement is called.
This really surprised me. Is this intentional behaviour as it seems
to be a potential source of significant redundant processing?
Stuart.
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Re: [Lift] Re: Serious widget action
On Wed, Mar 10, 2010 at 7:29 AM, aw anth...@whitford.com wrote: On Mar 10, 1:15 am, Timothy Perrett timo...@getintheloop.eu wrote: Personally, I would say forget ExtJS, compared to Cappuccino its streets behind: http://cappuccino.org/ Easily the most exciting UI framework out there right now Perhaps I should add that I need sophisticated grids: http://www.extjs.com/deploy/dev/examples/#sample-3 Hmmm... Cappuccino is the Apple AppKit, except it runs in the browser. Here's a cool example of a pure Cappuccino app: http://280slides.com/Editor/ Further, with Atlas ( http://280atlas.com/ ) you can take the output from NIB (Next Interface Builder, AKA OS X Interface Builder) files and literally run them in the browser. You have the full power of OS X's UI running in the browser. There's nothing in my experience that even comes close. A bunch of options like JQuery UI, YUI, and from what I see from Cappuccino don't seam to come close to the kind of widget sophistication that I am seeing in ExtJS. Hence, ExtJS is my front runner. (Flex is ultimately competition, but I don't like dealing with Flash.) I actually think that Cappuccino with Atlas is more powerful than Flash. I have a sprinkling of JQuery usage in my app already, and my initial thought was to simply use the JQuery adapter for ExtJS. Alternatively, I could probably just rewrite my JQuery code in ExtJS -- assuming then I would take the route to provide a jsArtifact for ExtJS. My real concern is factors like security and leveraging things like SHtml.link -- I don't want an oil and water scenario. I still need to deep dive into ExtJS, but wanted to float the idea in case someone was aware of a red flag before I wasted too much time. There are lots of things that can be done to integrate Lift's statefulness (server-side functions closing over state mapped to GUIDs sent to the client side) via JSON and Ajax/Comet. It will take a little thinking to get things right, but I have a high degree of confidence that it can be made right. It doesn't sound like anybody is using ZK [1], eh? [1] http://zkoss.org/ -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: Serious widget action
On Wed, Mar 10, 2010 at 1:40 AM, Mads Hartmann Jensen mads...@gmail.comwrote: +1 for cappuccino Played around with it a while back - it's pretty amazing. What kind of intergration are we talking about? I wouldn't mind taking a look at intergrating cappuccino. This would be a heck of an amazing GSoC project (although I'm not sure it's more important than the SBT stuff.) But, if you need any help from the 280 North guys, they have an ongoing interest in Lift integration. We hang out once a quarter or so and always walk away intending to do something, but never actually doing it. With this said, supporting both ExtJs (the MIT licensed part) and Cap would be awesome. On 10/03/2010, at 10.37, Indrajit Raychaudhuri wrote: ExtCore is MIT Licensed and a candidate for JSArtifacts impl [1]. I started dabbling with an implementation of ExtCoreArtifacts sometime back, but didn't have enough bandwidth to carry it forward. In case somebody is willing to run with this, there is a ticket for this already [2] Non ExtCore are GPLed and doesn't mix conveniently. Although there are some exceptions, I am not sure how practically that works license wise [3]. Cheers, Indrajit [1] http://www.extjs.com/products/extcore/ [2] http://www.assembla.com/spaces/liftweb/tickets/132 [3] http://www.extjs.com/products/floss-exception.php On Wed, Mar 10, 2010 at 1:55 PM, Marius marius.dan...@gmail.com wrote: Please see here http://groups.google.com/group/liftweb/browse_thread/thread/5e4f5e424d33db40/32cfb6752954?lnk=gstq=ExtJs#32cfb6752954 I'd strongly encourage you to integrate ExtJs with Lift and potentially other frameworks. Depending on JS library licence we'd be happy to have integrations with other JS frameworks. JsArtifacts should provide you the necessary abstractions for such integrations but if you run into problems, please let us know. On Mar 10, 8:27 am, Jim Barrows jim.barr...@gmail.com wrote: On Tue, Mar 9, 2010 at 8:45 PM, aw anth...@whitford.com wrote: It is time for me to add some serious widgets to my lift app. So far, I am most enamored by ExtJS. Another alternative could possibly be ZK. Does anybody have any experience with these frameworks? Can you comment on why integrating them with Scala/Lift would be a bad idea (or not work)? I searched for some historical posts on ExtJS and discovered some threads about it's license and how it impacts inclusion in the lift framework. Would a commercial license prohibit it from being a lift- widget submodule candidate? Does anybody have a better suggestion that you think can compete with ExtJS? I'm using ExtJS in anger at 0rk. 3.1.1 is nice. 3.0.0 is weird. Some odd bugs being reported. We're also getting some weird interactions with some other js libraries ( I won't mention it, it's not available anymore, and if it was it just leave you scarred) and CSS. However, that's the other libraries fault more then ExtJS's. If you want something that looks and feels as close to a desktop app as you can get.. ExtJS can do the job well. With Lift providing the JSON, it would be hard to go wrong. That said.. ExtJS is not an easy beast to learn. It's even worse to try and L10N it easily. I would not try and use just pieces of it, it's really not designed to do that. It seems to me to be an all or nothing approach. That's not say you can't use it piecemeal, I think you lose a lot of flexibility (especially in layout) that way. I wouldn't use it if left to my own devices though, unless I had a requirement for a desktop app on the web. It's serious overkill. -- James A Barrows -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me:
Re: [Lift] Re: Serious widget action
On Wed, Mar 10, 2010 at 1:51 AM, Timothy Perrett timo...@getintheloop.euwrote: The only possible thing that one could do would need two aspects: 1. The lift side to produce particular JSON 2. The capp side to consume said JSON Without a full package, there aren't really any integration points as we have already got comet working with capp so the only thing remaining is overall user implementation experience. Oh, I disagree. I think there are a lot of interesting potential ways to write model (not RDBMS models, but more general models) that emit Obj-J such that they feel natural to Cap and fully integrate with Cap (and Atlas) but are strongly typed and play well in Scala/Lift/Akka/Goat Rodeo land. Cheers, Tim On 10 Mar 2010, at 09:40, Mads Hartmann Jensen wrote: +1 for cappuccino Played around with it a while back - it's pretty amazing. What kind of intergration are we talking about? I wouldn't mind taking a look at intergrating cappuccino. On 10/03/2010, at 10.37, Indrajit Raychaudhuri wrote: ExtCore is MIT Licensed and a candidate for JSArtifacts impl [1]. I started dabbling with an implementation of ExtCoreArtifacts sometime back, but didn't have enough bandwidth to carry it forward. In case somebody is willing to run with this, there is a ticket for this already [2] Non ExtCore are GPLed and doesn't mix conveniently. Although there are some exceptions, I am not sure how practically that works license wise [3]. Cheers, Indrajit [1] http://www.extjs.com/products/extcore/ [2] http://www.assembla.com/spaces/liftweb/tickets/132 [3] http://www.extjs.com/products/floss-exception.php On Wed, Mar 10, 2010 at 1:55 PM, Marius marius.dan...@gmail.com wrote: Please see here http://groups.google.com/group/liftweb/browse_thread/thread/5e4f5e424d33db40/32cfb6752954?lnk=gstq=ExtJs#32cfb6752954 I'd strongly encourage you to integrate ExtJs with Lift and potentially other frameworks. Depending on JS library licence we'd be happy to have integrations with other JS frameworks. JsArtifacts should provide you the necessary abstractions for such integrations but if you run into problems, please let us know. On Mar 10, 8:27 am, Jim Barrows jim.barr...@gmail.com wrote: On Tue, Mar 9, 2010 at 8:45 PM, aw anth...@whitford.com wrote: It is time for me to add some serious widgets to my lift app. So far, I am most enamored by ExtJS. Another alternative could possibly be ZK. Does anybody have any experience with these frameworks? Can you comment on why integrating them with Scala/Lift would be a bad idea (or not work)? I searched for some historical posts on ExtJS and discovered some threads about it's license and how it impacts inclusion in the lift framework. Would a commercial license prohibit it from being a lift- widget submodule candidate? Does anybody have a better suggestion that you think can compete with ExtJS? I'm using ExtJS in anger at 0rk. 3.1.1 is nice. 3.0.0 is weird. Some odd bugs being reported. We're also getting some weird interactions with some other js libraries ( I won't mention it, it's not available anymore, and if it was it just leave you scarred) and CSS. However, that's the other libraries fault more then ExtJS's. If you want something that looks and feels as close to a desktop app as you can get.. ExtJS can do the job well. With Lift providing the JSON, it would be hard to go wrong. That said.. ExtJS is not an easy beast to learn. It's even worse to try and L10N it easily. I would not try and use just pieces of it, it's really not designed to do that. It seems to me to be an all or nothing approach. That's not say you can't use it piecemeal, I think you lose a lot of flexibility (especially in layout) that way. I wouldn't use it if left to my own devices though, unless I had a requirement for a desktop app on the web. It's serious overkill. -- James A Barrows -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to
Re: [Lift] Re: Serious widget action
On Wed, Mar 10, 2010 at 8:02 AM, Timothy Perrett timo...@getintheloop.euwrote: If you've already decided on ExtJS, why don't you just go use it? Dirk from Ext was originally going to do ExtJS integration, but he has disappeared into the ether never to be seen again. Yeah... I gotta ping him. He's also got some translation tickets open. You could always start an integration module on github and go from there... Cheers, Tim On Mar 10, 3:29 pm, aw anth...@whitford.com wrote: On Mar 10, 1:15 am, Timothy Perrett timo...@getintheloop.eu wrote: Personally, I would say forget ExtJS, compared to Cappuccino its streets behind: http://cappuccino.org/ Easily the most exciting UI framework out there right now Perhaps I should add that I need sophisticated grids: http://www.extjs.com/deploy/dev/examples/#sample-3 A bunch of options like JQuery UI, YUI, and from what I see from Cappuccino don't seam to come close to the kind of widget sophistication that I am seeing in ExtJS. Hence, ExtJS is my front runner. (Flex is ultimately competition, but I don't like dealing with Flash.) I have a sprinkling of JQuery usage in my app already, and my initial thought was to simply use the JQuery adapter for ExtJS. Alternatively, I could probably just rewrite my JQuery code in ExtJS -- assuming then I would take the route to provide a jsArtifact for ExtJS. My real concern is factors like security and leveraging things like SHtml.link -- I don't want an oil and water scenario. I still need to deep dive into ExtJS, but wanted to float the idea in case someone was aware of a red flag before I wasted too much time. It doesn't sound like anybody is using ZK [1], eh? [1]http://zkoss.org/ -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: Multiple stateful snippets in a page , keeping the common state?
The simplest answer is to use traits to define logic and when you have a page that's going to have multiple logic pieces that need to keep track of each other's state, mix the traits into a larger stateful snippet. I'm sorry that I've been giving you half-answers to a lot of your questions... I know you've stated parts of your problem in a number of different posts, but if I could trouble you to put together a more complete description of the pages, components and interactions, I can try to work up a complete example that might help. On Wed, Mar 10, 2010 at 8:02 AM, hexa hex...@gmail.com wrote: ok,, I don't want to put them in a single snippet since I want to be able to use them independently .. I could call one snippet from the other I guess this would work but just doesn't feel right... I would end up having to do one snippet per page to control the subsnippets... In fact i'm not sure how I can compose independent even non stateful snippets... without having an enclosing controler snippet Best would be if non-stateful snippets could find each other for example could I have something like lift::SnippetA lift:SnippetB /lift:SnippetB /lift::SnippetA And have snippet B find the snippet A instance ? and modify it's rendering based on it ? or something similar? This way my list Invoice could know what it's in a AddInvoice snippet and get the Client it must show the invoices for .. And otherwise just render all invoices... Having it in another context could make it render different things... Or would I really have to bind SnippetB inside SnippetA with chooseTemplate and directly call it's functions with the arguments I need ? and do this all top-down... rather then down-top... So basically I guess the question is how do you manage multiple snippets (non-stateful) so that they are the most independent from each other and that code can reused and scoped properly if they have any effect on each other and or that they can enclose each other... Maybe Im way off too ,, sorry , Help is much apreciated... I will try the ajax way too, and I guess I could repost the RequestVar.. need to try that too.. Thanks, hexa On Mar 10, 9:33 am, David Pollak feeder.of.the.be...@gmail.com wrote: The short answer is no. The slightly longer answer is Can you put both into a single snippet? The even longer answer is Have you tried using Ajax forms so you don't even leave the page? On Tue, Mar 9, 2010 at 10:19 PM, hexa hex...@gmail.com wrote: Hi, I have 2 Stateful snippets in a page : 1. a InvoiceList snippet that 1. If no client RequestVar is present lists all the invoices in the system 2. If a client RequestVar is present lists the invoices for that client 2. a AddInvoice snippet that displays a form and adds an invoice binded on the Client RequestVar.. Now these 2 can share the same RequestVar.. and that's fine for one request And at least in the case of 1 stateful snippet since I set the request var to a class var , it persists after a submit on the AddInvoice... the client persists But for the other snippet .. the state is lost... So is there a way to manage the common states of multiple snippets in a page ? Should I use a SessionVar ? I kinda would prefer not to since It's really not a var that should be persistent over the session The best would be that they both keep their state .. as an action is performed on one of them... Thanks a lot hexa -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com liftweb%2bunsubscr...@googlegroups.comliftweb%252bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web frameworkhttp://liftweb.net Beginning Scalahttp://www.apress.com/book/view/1430219890 Follow me:http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr
Re: [Lift] Converting a null String to an empty String
Can you be a little more specific? Are you saying that if you have a variable of type String that is a null reference that in certain cases, when that variable is in an xml literal, it becomes a zero length item, a Text(), or something else? Sorry for being pedantic, but I'm trying to understand both how to reproduce the issue and what you expect to happen. Thanks Connected by MOTOBLUR™ on T-Mobile -Original message- From: Heiko Seeberger heiko.seeber...@googlemail.com To: liftweb liftweb@googlegroups.com Sent: Tue, Mar 9, 2010 15:26:53 GMT+00:00 Subject: [Lift] Converting a null String to an empty String Hi, I am pretty sure there is a method somewhere converting a null String to an empty String. But I have not found it yet ... Thanks, Heiko Company: weiglewilczek.com Blog: heikoseeberger.name Follow me: twitter.com/hseeberger OSGi on Scala: scalamodules.org Lift, the simply functional web framework: liftweb.net -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: More dynamic Lift
My development cycle has never worked well with JRebel. First, I've got so many machines I do development on (5, 3 of which get wiped each time Ubuntu releases a new version), getting all of those machines set up with JRebel is something of a pain. Further, having JRebel run in some cases is *very bad* (e.g., any compilation takes 10x longer with JRebel). So, when I do use JRebel, it is generally a bad experience for me. This is based on the way I code. First, I use a whole lot of for comprehensions in my code. The problem with for comprehensions is that they create a bunch of anonymous inner classes that are named based on the order they appear in the code. This means that the classes for a given thing change and that leads to incompatible class change issues. Further, I write a lot of code in traits that I mix into lots of different classes. This also leads to less than optimal results in JRebel (more incompatible class change issues.) The JRebel folks and Martin have worked to address the former issue, have not completely eliminated it. There's a further issue... JRebel doesn't work automatically with Lift. Technically, it's costless, but you have to register it with ZeroTurnaround, etc. This means you start using JRebel after you've made a commitment to Lift rather than during the early stages of using Lift. So, based on our recent discussion about onboarding, some discussions Jeppe and I have been having, and my non-JRebel-friendly development style, I thought that there might be a way to address all of these issues at once. On Tue, Mar 9, 2010 at 6:48 AM, Timothy Perrett timo...@getintheloop.euwrote: No it doesn't work for sitemap... as thats loaded at boot only ;-) My point was that it can still be a good experience without JR for our users. Interesting what you were saying about your dev style... i'm usually the other way around and implement sitemap last as I see it as a concrete setting of my content. Cheers, Tim On 9 Mar 2010, at 11:20, Jeppe Nejsum Madsen wrote: On Tue, Mar 9, 2010 at 12:08 PM, Timothy Perrett timo...@getintheloop.eu wrote: BTW, with SBT, don't forget you can do: jetty-run (make changes to your code) prepare-webapp That will redeploy chnaged files / classses to the running jetty instance so development with SBT can still be slick without javarebel :-) But still this doesn't address the problem (I think?) of changing things in Boot. Maybe I code differently from everybody else, but when iterating new features, I always end up making lots of changes to Sitemap. And afaik everyone of those changes requires a restart For the rest I agree JRebel fits quite nicely (it does have it's problems as David points out) /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] NodeSeq to JsExp how to?
On Tue, Mar 9, 2010 at 9:14 AM, Ross Mellgren dri...@gmail.com wrote:
Try this (I haven't tested it, so there could be lurking bugs):
case class JQueryNodeSeq(ns: NodeSeq) extends JsExp with JQueryLeft with
HtmlFixer {
override def toJsCmd = jQuery( + JsStr(fixHtml(NodeSeqDialog,
ns)).toJsCmd + )
}
Ross,
This is good code, but introduces a potential security vulnerability. ;-)
fixHtml runs the NodeSeq through Lift's snippet handler. If you have
web-user input, a user could type in lift:/ and cause server-side code
to be executed.
import net.liftweb.util._
import Helpers._
Personally, I'd suggest jQuery( + AltXML.toXML(nodeSeq, false, true).encJs
+ )
Thanks,
David
Then JQueryNodeSeq(ns) ~ JsFunc(dialog)
-Ross
On Mar 9, 2010, at 12:06 PM, Stuart Roebuck wrote:
I'm trying to produce a web page with editable content.
When the user clicks an edit button on a line it uses jQuery to
display a modal dialog which allows fields of that line to be edited.
I can easily produce a snippet to produce the lines using the backend
data and an XHTML template and binding etc.
However, I also want the template to include the template for the
dialog. So I want the ajax button callback to send JavaScript to
instantiate the jQuery UI dialog based on the template and bindings.
To build this I need to assemble a JsCmd containing the NodeSeq that
comes from the XHTML sequence and the bindings.
In short, if this was straight jQuery I would have some JavaScript of
the form:
$(div title=Dialog TitletheFormNodeSeq/div).dialog()
But in my case theFormNodeSeq comes from a NodeSeq that was assembled
from part of the XHTML template and the bindings and the end result
needs to be a JsCmd.
So I'm trying to do something like:
JsCmds.Run($( + theFormNodeSeq.toString + ).dialog())
But I need to address escaping issues with the HTML and I also need to
pre-process any lift:… / commands in theFormNodeSeq.
Any advice (please)?
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Re: [Lift] Re: More dynamic Lift
On Tue, Mar 9, 2010 at 9:25 AM, Timothy Perrett timo...@getintheloop.euwrote: Wow, I wish I had 5 machines ;-) lol. Thats an interesting outlook and an explanatory rationale. Can you explain the implementation? Perhaps I can be persuaded. Right now, i'm not convinced about hampering development mode in this way. Basically, Boot will be run and then LiftRules will be snapshot. Then the function in the dynamic block is run. This gives us the baseline LiftRules. For each request, we roll LiftRules back to the snapshot, create a new class loader, reload the function passed to the dynamic block and run that in the scope of the new classloader, then proceed to service the request. This means that all the classes referenced by the request are reloaded (although the excluded classes in model, etc. will be loaded by the servlet scope classloader rather than our per-request classloader). I can structure things such that if you don't use the dynamic block, you will see the same behavior as we have now. I can also structure things that will allow a less dynamic block that allows for SiteMap updates without causing the whole machinery to get invoked. So, what you'd see is: - Existing code would work exactly the way it works now - Any code that used the dynamic block in Boot would cause the new dynamic mechanism to be invoked (this would be the default for new projects, but well commented to suggest alternatives) - There would be a less dynamic mode for SiteMap and other LiftRules changes (this would be run on each request against the snapshotted LiftRules, but there would not be a new classloader). In this mode, you'd only be able to serve 1 request at once. Now, we could wait until 2.8 is the default... with package objects, we could define LiftRules in the package objects to be differently visible to each request (a la RequestVars). Cheers, Tim On 9 Mar 2010, at 17:13, David Pollak wrote: So, based on our recent discussion about onboarding, some discussions Jeppe and I have been having, and my non-JRebel-friendly development style, I thought that there might be a way to address all of these issues at once. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: NodeSeq to JsExp how to?
On Tue, Mar 9, 2010 at 9:34 AM, Stuart Roebuck stuart.roeb...@gmail.comwrote:
Ross,
Thanks - yes, the NodeSeq is all generated from templates internally.
Then Ross's solution is the best for you.
The end user does not have any access to change this stuff so this
particular security issue shouldn't be a problem in this case.
Stuart.
On Mar 9, 5:30 pm, Ross Mellgren dri...@gmail.com wrote:
Ah yes, the reason I went through the fixHtml route is because Stuart
specifically mentioned he wanted to process those.
Stuart, you should make sure to properly secure this stuff -- either as
an admin-only thing (understanding that that person has as much rights as
you) or by scrubbing the XML thoroughly.
-Ross
On Mar 9, 2010, at 12:26 PM, David Pollak wrote:
On Tue, Mar 9, 2010 at 9:14 AM, Ross Mellgren dri...@gmail.com
wrote:
Try this (I haven't tested it, so there could be lurking bugs):
case class JQueryNodeSeq(ns: NodeSeq) extends JsExp with JQueryLeft
with HtmlFixer {
override def toJsCmd = jQuery( + JsStr(fixHtml(NodeSeqDialog,
ns)).toJsCmd + )
}
Ross,
This is good code, but introduces a potential security vulnerability.
;-)
fixHtml runs the NodeSeq through Lift's snippet handler. If you have
web-user input, a user could type in lift:/ and cause server-side code
to be executed.
import net.liftweb.util._
import Helpers._
Personally, I'd suggest jQuery( + AltXML.toXML(nodeSeq, false,
true).encJs + )
Thanks,
David
Then JQueryNodeSeq(ns) ~ JsFunc(dialog)
-Ross
On Mar 9, 2010, at 12:06 PM, Stuart Roebuck wrote:
I'm trying to produce a web page with editable content.
When the user clicks an edit button on a line it uses jQuery to
display a modal dialog which allows fields of that line to be edited.
I can easily produce a snippet to produce the lines using the backend
data and an XHTML template and binding etc.
However, I also want the template to include the template for the
dialog. So I want the ajax button callback to send JavaScript to
instantiate the jQuery UI dialog based on the template and bindings.
To build this I need to assemble a JsCmd containing the NodeSeq that
comes from the XHTML sequence and the bindings.
In short, if this was straight jQuery I would have some JavaScript of
the form:
$(div title=Dialog TitletheFormNodeSeq/div).dialog()
But in my case theFormNodeSeq comes from a NodeSeq that was assembled
from part of the XHTML template and the bindings and the end result
needs to be a JsCmd.
So I'm trying to do something like:
JsCmds.Run($( + theFormNodeSeq.toString + ).dialog())
But I need to address escaping issues with the HTML and I also need
to
pre-process any lift:… / commands in theFormNodeSeq.
Any advice (please)?
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Re: [Lift] Converting a null String to an empty String
On Tue, Mar 9, 2010 at 9:30 AM, Heiko Seeberger heiko.seeber...@googlemail.com wrote: On 9 March 2010 16:48, David Pollak feeder.of.the.be...@gmail.com wrote: Can you be a little more specific? Sure ;-) I am looking for a method like this: def stringNullTest(s: String): String = if (s != null) s else Of course I could roll my own, but if it is already around (e.g. in StringHelpers) I would use it from there. Nothing like that in StringHelpers... feel encouraged to open a ticket and enhance StringHelpers with this method. Heiko Company: weiglewilczek.com Blog: heikoseeberger.name Follow me: twitter.com/hseeberger OSGi on Scala: scalamodules.org Lift, the simply functional web framework: liftweb.net -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] RequestVar copy /clone ?
Howdy,
Lift does rendering most basically with Snippets. Snippets are functions
NodeSeq = NodeSeq... they take a NodeSeq and return a NodeSeq. Snippets
are generally independent entities. They do not know about each other.
They can ask about the state of the session and the state of the request.
We introduced RequestVar (and SessionVar) to give developers a type-safe way
to share information during the scope of a request (RequestVar) and session
(SessionVar).
RequestVars are strongly typed. That means if you define a RequestVar to
hold a String, the compiler will not allow you to put a List into it.
Behind the scenes, RequestVars use a shared Map[String, Any] to store the
information. The String is the name of the RequestVar and the Any is the
thing that you are putting into the slot for the Var.
So, we use a little magic to generate the unique but stable name of the
Var. Specifically, we look at the class name that the compiler selected for
the object that extends RequestVar. If the object is defined within a
class, the class name for the RequestVar will depend on that class name.
When you have an object that extends a class, the Scala compiler may
generate a new class and thus your currentClient RequestVar in the
ViewClient class and the ViewClient object are different RequestVars. They
point to different things.
The easiest way to deal with this is to make your currentClient a top-level
object. If you want to scope the currentClient RequestVar someplace, I'd
suggest:
object ViewClient extends ViewClient {
object currentClient extends RequestVar...
}
So, please try putting the currentClient someplace where there's a single
path (from a class perspective) to it and I'm guessing that your issue will
go away.
Thanks,
David
On Mon, Mar 8, 2010 at 10:13 PM, hexa hex...@gmail.com wrote:
Hi,
I have a RequestVar that I send to a snippet which will then do a
post...
But I would like the RequestVar to persist between the moment it it
received in the post snippet and the post itself...
The only way I found of doing it right now is like :
Source Snippet :
object ViewClient extends ViewClient
class ViewClient
{
object currentClient extends RequestVar [Box [Client]] (Empty)
bind (...
addInvoice - SHtml.link (/invoice/create, () = currentClient
(Full (c)), Text (Ajouter Facture)))
Destination Post Snippet :
def add (inhtml: NodeSeq) : NodeSeq = {
val inInvoice = Invoice.create
val clientBox = ViewClient.currentClient
val client_id = clientBox map (_.id.toLong)
def processEntry () {
Client.findByKey (client_id openOr 0) map (inInvoice.client (_))
inInvoice.save
S.notice (Entre : Description + inInvoice.description +
Montant : + inInvoice.amount)
}
bind (e, inhtml,
description - inInvoice.description.toForm,
amount - inInvoice.amount.toForm,
submit - SHtml.submit (Ajouter Facture, processEntry))
If I try to access the clientBox in processEntry, even with the
closure it should generate.. I get an empty box...
Is there any way to copy / ref or anything or make a new RequestVar
with a copy of the preceding one ?
Would have been nice not to be obligated to do the client_id toLong
code...
And juste do inInvoice.client (client) , inInvoice.save
Thanks a lot
hexa
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Re: [Lift] Re: London Lift talk
On Tue, Mar 9, 2010 at 11:45 AM, Marius marius.dan...@gmail.com wrote: Really nice talk Richard. Great stuff !!! It's excellent stuff! On Mar 9, 9:05 pm, Richard Dallaway dalla...@gmail.com wrote: On Sat, Feb 20, 2010 at 8:22 PM, andy andy1...@gmail.com wrote: The London Scala User Group (LSUG) will be presenting a talk by Richard Dallaway on 'Getting started with Lift' at SkillsMatter It is done:http://icanhaz.com/gswl... where you will find a link to the Skillsmatter video. Richard -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: field without mapper and Form validation
On Tue, Mar 9, 2010 at 6:17 AM, Francois fan...@gmail.com wrote:
Le 09/03/2010 10:12, Francois a écrit :
Hello guys,
I'm often using forms without anything to do persistence and RDBMS
related, but I would like to be able to use Fields (StringField,
EmailField, my owns, etc), validation, error management, etc. without
having everything to manage by hand.
After searching more carefully on the mailing list archive, it seems that
what I'm looking for is something like a mix of one-page wizard with
Record/Mapper fields integration (or fields that are currently in
Record/Mapper/Wizard may live in there own package and only manage the
domain/client part ?)
Please look at LiftScreen. Here's the code from example//Wizard.scala:
object PersonScreen extends LiftScreen {
object person extends ScreenVar(Person.create)
override def screenTopTextAsHtml = Full(bA single screen with some input
validation/b)
_register(() = person.is)
val shouldSave = new Field with BooleanField {
def name = Save ?
}
def finish() {
if (shouldSave.is) {
person.is.save
}
}
}
So, you can define your own fields (e.g. val shouldSave extends new Field
with BooleanField) You can also register a FieldContainer (by calling
_register in the constructor). A FieldContainer will return you a list of
BaseField (net.liftweb.util.BaseField). So, Mapper objects implement
FieldContainer. So, you can blend in a Mapper objects as well as anything
else that has collections of BaseField with fields that you define.
You can override doSetup() on the LiftScreen. It will be called when the
Screen is entered. You have to implement the finish() method which will be
called on successful submission of the Screen. Each field has its own
validation rules. If you want to validate across fields, you can overload
the LiftScreen's validate method.
Does this help? One of my open tickets is to provide documentation and
examples of LiftScreen and Wizard (Wizard is a multi-page collection of
Screens). If you can give me a idea of a good example for you, I'll work on
it.
Thanks,
David
Relevant threads:
- http://old.nabble.com/Multipage-wizards-td26504293.html (especially
Jeppe answer)
-
http://old.nabble.com/Lift-Wizard-Fields-incompatible-with-lift-record-fields-tc27230782.html
So, I'm going to see how wizards are working,
Thanks,
--
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http://fanf42.blogspot.com
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Re: [Lift] Re: File Download
On Tue, Mar 9, 2010 at 1:45 PM, DavidV david.v.villa...@gmail.com wrote:
Any thoughts on this? Still trying to get it to work.
See the enclosed example code. Specifically, there's a dpp.gif file in
src/main/resources and in Boot.scala:
LiftRules.statelessDispatchTable.append {
case Req(image :: name :: Nil, gif, GetRequest) =
() =
for {
stream - tryo(this.getClass.getResourceAsStream(/+name+.gif))
if null ne stream
} yield StreamingResponse(stream, () = stream.close,
stream.available, List(Content-Type - image/gif), Nil, 200)
}
If you put other GIF files in resources, the server will find and serve
them.
Thanks
On Mar 5, 2:56 pm, DavidV david.v.villa...@gmail.com wrote:
I have recreated a number of StreamingResponse methods from both the
Loop link above and the Lift book and I still can't seem to get the
desired effect. I have been able to get a PlainTextResponse to work
by using LiftRules.dispatch in the Boot, like so:
LiftRules.dispatch.prepend {
case Req((analysis :: inprocess :: Nil), _, _) =
() = Full(PlainTextResponse(test))
}
However, I am unable to get any sort of streaming response to work in
the particular snippet which contains the data I would like to use.
Here are some of the methods I've tried:
def textResponse: Box[LiftResponse] = {
println(TEXT RESPONSE)
val ab = text would go here
Full(PlainTextResponse(ab,
(Content-Type - text/plain) :: Nil, 200
))
}
def streamingResponseFile: Box[LiftResponse] = {
println(STREAMING RESPONSE FILE)
val file: File = new File(
C:\\Source\\trunk\\eclipse\\testLift\\src\\main\\webapp\\images\
\ultra.png
)
val length = file.length
val fileInput = new java.io.FileInputStream(file)
Full(StreamingResponse(fileInput,
() = { fileInput.close },
length,
(Content-Type - image/png) :: Nil,
Nil,
200)
)
}
Do I have to make a LiftRules.dispatch function in the Boot in
addition to the StreamingResponse in my snippet?
I am trying to download plain text, but it is variable and dependent
on some parameters and other variables in the particular Snippet
class. Would I have to pass that data into the boot method in order
to get the desired response? I would prefer to handle it entirely in
the snippet itself.
Finally, I'm not really sure how exactly to handle the
Full(StreamingResponse) once I have created it in order to actually
download the data and save it to the client computer. Although I
assume the browser will handle this one I've formatted the Response
correctly and actually have it working.
Thanks again,
David
On Mar 4, 11:13 am, Marius marius.dan...@gmail.com wrote:
If you want todownloadthrough Lift than yes you can use
StreamingResponse, or simply any other LiftResponse (depending on your
mime-type) and use LiftRules.dispatch mechanism. But you could also
let the container to serve thefile. By default Lift is trying to
serve .html, .xhtml, .htm, .xml etc.. You can write your own rules by
setting
LiftRules.liftRequest = {
case req = true // Pattern match whatever you like and return a
Boolean
}
If Lift cannot find a resource for some reason and you want the
container (or subsequent filters) to handle that you can set
LiftRules.passNotFoundToChain = true
On 4 mar., 17:09, DavidV david.v.villa...@gmail.com wrote:
I am also looking todownloadafilefrom the server that is hosting
my Lift web app. There is a very useful fileUpload method in the
SHtml class and I was wondering if there may be something similar for
afiledownload? I was unable to find anything, and searching for
Lift or Scala Liftdownload on Google returns nothing but pages to
downloadthe libraries, plugins or source code. I suppose I could use
the StreamingResponse, but I am already saving thefileI need to the
server and it would be nice to be able todownloadit to any client
computer with the typical Browse button, similar to the upload,
Thanks,
David
On Feb 14, 3:58 pm, Gang wangga...@gmail.com wrote:
Thanks Tim, that's exactly what I'm looking for!
On Feb 14, 11:27 am, Timothy Perrett timo...@getintheloop.eu
wrote:
See:
http://blog.getintheloop.eu/2009/3/19/understanding-lift-s-streamingr...
Construct the CSV in memory and just then stuff it into a
streaming response as a byte array.
Cheers, Tim
On 14 Feb 2010, at 16:18, Gang wrote:
Hi,
I have a question and it may not be a pure Lift one. But since
I'm
working on a Lift app and this group is the most responsive one
I have
seen, might just try it here.
I need todownloaddata from database in CSV format. What is the
best
approach within Lift framework?
Re: [Lift] Re: IdPK Model boiler-plate
I'm going to implement this as a sub-trait of IdPK (anyone got a good name
for the trait). So, by default, you'll get the current behavior, but if you
think equality should be based on primary key rather than on the field
values, you don't have to have all the boilerplate.
On Sun, Mar 7, 2010 at 11:01 PM, aw anth...@whitford.com wrote:
What's wrong with KeyedMapper's implementation?
Well, that was exactly why I was asking the question, Is this
implementation for equals and hashCode a good idea? I had gotten
this at some point, been using it, and am only questioning it now
because if it truly is a good idea, I think it should be part of the
framework...
The hashCode implementation for KeyedMapper looks essentially the
same:
this.id.is.hashCode
vs.
primaryKeyField.is.hashCode
However, the equals implementation for KeyedMapper is a little
different:
override def equals (other : Any) = other match {
case t : Team if t.id.is == this.id.is = true
case _ = false
}
vs.
override def equals (other : Any) : Boolean = {
other match {
case null = false
case km: KeyedMapper[Nothing,Nothing] if
this.getClass.isAssignableFrom(km.getClass) ||
km.getClass.isAssignableFrom(this.getClass) =
this.primaryKeyField == km.primaryKeyField
case k = super.equals(k)
}
}
There are some subtle differences. I have never used inheritance with
Mapper to make a complex class hierarchy, so I'm not 100% sure of the
ramifications (or if it is even possible).
Personally, I would imagine that two mapper objects are equal using a
primary key comparison only as long as they are read-only singletons.
If I had instance #1 loaded into val A and again into var B, then
modified some elements of B, I would no longer expect A to equal B --
but with the above implementation, they remain equal as long as the
primary key field is not altered.
In JPA/Hibernate land, I actually have a different approach for equals
and hashCode: each field is compared with the exception of the @Id
and @Version columns because they can change upon persistence, and so
are not part of the equality. I leverage Apache Commons-Lang
builders:
@Override
public boolean equals (final Object obj) {
return EqualsBuilder.reflectionEquals(this, obj,
EXCLUDE_FROM_EQUALS_AND_HASH_CODE);
}
@Override
public int hashCode () {
return HashCodeBuilder.reflectionHashCode(this,
EXCLUDE_FROM_EQUALS_AND_HASH_CODE);
}
/**
* Exclude fields from equals, hashCode, and compareTo that may
change upon
* persistence.
*
* @see a href=http://www.hibernate.org/109.html;Best
strategies for
* implementation of equals() and hashcode() in your persistent
classes./a
*/
private static final String [] EXCLUDE_FROM_EQUALS_AND_HASH_CODE =
{id, version};
So, if Hibernate suggests that you should NOT just compare the primary
key field, why should Lift-Mapper be doing that?
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Re: [Lift] Re: BSON support in lift-json
On Mon, Mar 8, 2010 at 12:50 AM, Joni Freeman freeman.j...@gmail.comwrote: This is a tricky one. The problem with extending the AST is that the AST is implemented as an algebraic data type. And by definition it is not possible to extend such a type. Just throwing an idea out and it's likely a bad one. I ran into a similar issue with Box and chose to do a hybrid (aka Frankenstein) ADT/OO paradigm. Perhaps it's possible to provide subclasses of certain ADT items (e.g., JDate extends JInt) such that if you pattern match on a JInt, you get the millis as long, but if you pattern match against JDate, you get a date extracted if it's the JDate subclass. Once again, it's likely to be a bad idea as it caused a lot of angst in Box and I'm not sure if the paradigm is one that's worth perpetuating. One way to add BSON support is to create a new AST for it which includes all extended literals. Then add a few core functions for that ADT (map, etc.) and maybe a function which can encode BSON as JSON (bvalue.toJson). Encoding BSON as JSON would give some features for free, for instance toXml. Anyway, this approach would probably cause some code duplication between lift-json and lift-bson. Converting the JSON AST to an object oriented design would be another approach. Then adding new AST nodes would not be a problem. But that would be a huge change to the lib. Probably too big at this phase. Since BSON is a superset of JSON we could refactor current lift-json to be lift-bson and then implement lift-json on top of it. On a cursory look this feels cleanest but there might be some performance penalties for normal JSON processing due to conversions. To be honest, I'm not yet sure what would be the best approach. Cheers Joni On Mar 5, 10:08 pm, Ross Mellgren dri...@gmail.com wrote: The JSON stuff is mostly just an AST and encoding/decoding from the JSON wire format is almost just an addon. Then, it would be a matter of adding AST objects for those new things. Could be a use for phantom types ;-) I'd be interested to hear Joni's view on how it might fit, since he's the most familiar. -Ross On Mar 5, 2010, at 1:26 PM, Tim Nelson wrote: I definitely agree with keeping the BSON code separate or possibly having a strict JSON mode. Tim On Fri, Mar 5, 2010 at 12:13 PM, Timothy Perrett timo...@getintheloop.eu wrote: Probably a sub-ordinate module would be preferable... one that builds on the lift-json stuff and doesn't pollute the normal JSON usage. Joni, what are your thoughts? Cheers, Tim On 5 Mar 2010, at 17:59, Tim Nelson wrote: I finally had the opportunity to look into the couchdb code and I must say it is rather impressive. I would like to utilize the code in JSONRecord.scala in scamongo [1]. However, MongoDB uses a variation of JSON they call BSON, which they actually just published a spec [2] for, due to interest outside of MongoDB. Basically, it adds support for date, ObjectId [3], binary data, regular expressions, and code (JavaScript) data types. My question is, what would it take to add support to lift-json for these other data types? Is this even feasible? Thanks, Tim [1]http://github.com/eltimn/scamongo [2]http://bsonspec.org/ [3]http://www.mongodb.org/display/DOCS/Object+IDs -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group athttp:// groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group athttp:// groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group athttp:// groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala
Re: [Lift] Reorganize mapper specs?
On Sun, Mar 7, 2010 at 12:47 PM, Naftoli Gugenheim naftoli...@gmail.comwrote: Based on discussion on Review Board item 247, I want to propose the following change to the organization of Mapper specs. Currently there are four files in framework/lift-persistence/lift-mapper/src/test/scala/net/liftweb/mapper: DBProviders - initalization for each provider to be tested MapperSpecs - the original set of tests. Tested per provider, which makes sense for tests that interact with the database ManyToManySpecs - tests I added with an enhancement to ManyToMany to not choke on broken joins. Only uses DBProviders.H2MemoryProvider. When FK constraints are enabled in H2 this will have to disable them. ItemsListSpecs - tests for a bugfix in ItemsList. Also only uses DBProviders.H2MemoryProvider. Currently MapperSpecs takes about five minutes to run on my laptop. So any new test that isn't driver dependent should probably not be tested on all drivers. Thus I'm considering consolidating ItemsListSpecs and ManyToManySpecs into one specs for all H2MemoryProvider-only tests. Then, with two set of tests, one run for each driver and one not, maybe their names should reflect that. It's just a possible idea, but what do people think? Also, if I would go ahead would it need a ticket or just straight to RB? I agree with the goal of shortening the time it takes to run mapper tests. I would like there to be a way (not the default, but something that can be done with some form of compiler/maven flags) to run all cross-products of all tests so we just make 100% sure that things work on all RDBMSs. Please open a ticket first before putting stuff on RB. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Enable -Xcheckinit in 2.8 port?
On Mon, Mar 8, 2010 at 10:01 AM, Jeppe Nejsum Madsen je...@ingolfs.dkwrote: Hi, Just found out why the Logging stuff doesn't work on the 2.8 branch. Details here: http://permalink.gmane.org/gmane.comp.lang.scala.user/24469 Is it somehow possible to enable the -Xcheckinit flag for the 2.8 branch? Don't know how common that issue is, but it may help trap some subtle errors. Don't know what the performance penalty is though. Let's enable the flag for the 2.8 branch along with the deprecation flag (Indrajit, can you do this?) /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Reorganize mapper specs?
On Mon, Mar 8, 2010 at 12:00 PM, Naftoli Gugenheim naftoli...@gmail.comwrote: I'm not 100% clear on your proposal. First of all, is what I've done (on RB) in the meantime okay (without a ticket)? What part of Please open a ticket first before putting stuff on RB. is unclear? You've consumed all of my time for stuff related to you until April. Basically, I renamed ItemsListSpecs to MapperSpecs2 and put the test for issue 370 there. MapperSpecs2 only uses H2 memory db. (Any suggestions for a better name?) As for your proposal, are you saying that things like ItemsListSpecs and 370, which deal with high-level Mapper API not directly related to the database, should ideally be testable on every database vendor? And/or are you saying that *all* the tests should be run by default on only one driver but have the option to run on all? Also, is it possible to run MapperSpecs for all the drivers in parallel, and if so would that cause it to finish faster? Thanks. - David Pollakfeeder.of.the.be...@gmail.com wrote: On Sun, Mar 7, 2010 at 12:47 PM, Naftoli Gugenheim naftoli...@gmail.com wrote: Based on discussion on Review Board item 247, I want to propose the following change to the organization of Mapper specs. Currently there are four files in framework/lift-persistence/lift-mapper/src/test/scala/net/liftweb/mapper: DBProviders - initalization for each provider to be tested MapperSpecs - the original set of tests. Tested per provider, which makes sense for tests that interact with the database ManyToManySpecs - tests I added with an enhancement to ManyToMany to not choke on broken joins. Only uses DBProviders.H2MemoryProvider. When FK constraints are enabled in H2 this will have to disable them. ItemsListSpecs - tests for a bugfix in ItemsList. Also only uses DBProviders.H2MemoryProvider. Currently MapperSpecs takes about five minutes to run on my laptop. So any new test that isn't driver dependent should probably not be tested on all drivers. Thus I'm considering consolidating ItemsListSpecs and ManyToManySpecs into one specs for all H2MemoryProvider-only tests. Then, with two set of tests, one run for each driver and one not, maybe their names should reflect that. It's just a possible idea, but what do people think? Also, if I would go ahead would it need a ticket or just straight to RB? I agree with the goal of shortening the time it takes to run mapper tests. I would like there to be a way (not the default, but something that can be done with some form of compiler/maven flags) to run all cross-products of all tests so we just make 100% sure that things work on all RDBMSs. Please open a ticket first before putting stuff on RB. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com liftweb%2bunsubscr...@googlegroups.comliftweb%252bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] More dynamic Lift
Folks,
I spent today cracking the code on how to implement a more dynamic Lift
development cycle. Specifically, I figured out how to support (during
development mode) having changes in compiled code reflected in the running
application. The change to your Lift app will be a change in how you do
things in Boot.scala. Basically, anything that could change between page
loads will be wrapped as such in Boot:
LiftRules.dynamicDevelopmentMode(List(com.liftcode.model,
com.liftcode.lib))(() = {
LiftRules.dispatch.append {...}
LiftRules.setSiteMap()
})
The list is a list of packages to exclude from the dynamic reloading.
Because schemification isn't going to happen on every page reload, it's best
not to reload the models.
The dynamic mode will impose the following limitations:
- Lift will only service one request at once in development mode
- Page loads in development mode will be 10x-50x slower than in
non-development mode
- Comet objects will not change once they've been instantiated
- There will cases where classes created in one classloader are not
recognized as the same class for casting and/or pattern matching purposes if
the classes are created across calls
- There may be problems related to running out of PermGen space because
each page reload will cause all the applications classes to be reloaded...
and this may happen faster than the classes are GCed.
With those limitations, do you guys thing the feature would be valuable?
Should it be part of development mode or should there be another demarcation
of the dynamic reload mode?
Thanks,
David
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Re: [Lift] Re: More dynamic Lift
It's less sensitive to inner class name changes and supports changing interfaces. Connected by MOTOBLUR™ on T-Mobile -Original message- From: harryh har...@gmail.com To: Lift liftweb@googlegroups.com Sent: Tue, Mar 9, 2010 01:42:10 GMT+00:00 Subject: [Lift] Re: More dynamic Lift What's the advantage of this sort of setup over using JavaRebel? -harryh -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: asHtml compiler exception traversing code ?
Try doing and mvn clean compile
There are known issues with the Scala 2.7.x compiler related to nested traits
and only partial recompilation.
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-Original message-
From: hexa hex...@gmail.com
To: Lift liftweb@googlegroups.com
Sent: Tue, Mar 9, 2010 03:15:31 GMT+00:00
Subject: [Lift] Re: asHtml compiler exception traversing code ?
Wow it seems that I now get that even without the asHtml...
Using scala 2.7.7 with lift 1.1-M8 ...
On Mar 8, 9:51 pm, hexa hex...@gmail.com wrote:
Hi all,
I have this code :
class ViewClient
{
val clientId = S.param (id) openOr
val client = try {
Client.findByKey (clientId.toLong)
}
catch {
case e:NumberFormatException = Empty
}
def view (inhtml: NodeSeq) : NodeSeq = {
client map ( { c =
bind (client, inhtml,
firstName - c.firstName,
lastName - c.lastName)
} ) openOr Text (Client invalide)
}
}
class Client extends LongKeyedMapper [Client] with IdPK with OneToMany
[Long, Client]
{
def getSingleton = Client
object firstName extends MappedString (this, 256)
object lastName extends MappedString (this, 256)
A fairly simple view ...
I would like to call :
firstName - c.firstName.asHtml
It would seem appropriate to me since c is a Client ...
But I get :
INFO] exception when traversing ((x$2: com.envirobiz.model.Client) = x
$2.firstName)
[INFO] exception when traversing client.map[object
com.envirobiz.model.Client#firstName](((x$2:
com.envirobiz.model.Client) = x$2.firstName))
[INFO] exception when traversing client.map[object
com.envirobiz.model.Client#firstName](((x$2:
com.envirobiz.model.Client) = x$2.firstName)).toString
[INFO] exception when traversing client.map[object
com.envirobiz.model.Client#firstName](((x$2:
com.envirobiz.model.Client) = x$2.firstName)).toString()
And more... until :
[ERROR] scala.tools.nsc.symtab.Types$TypeError: type mismatch;
[INFO] found : x$2.firstName.type (with underlying type object x
$2.firstName)
[INFO] required: com.envirobiz.model.Client#firstName.type
If I do not do asHtml it works properly...
Also this works in other contexts like :
toShow.flatMap (client =
bind (client, inhtml,
firstName - client.firstName.asHtml,
In another list view .. so i'm confused ...
Any ideas ?
Thanks
hexa
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Re: [Lift] toForm function passing problem ... ?
On Sun, Mar 7, 2010 at 9:54 AM, hexa hex...@gmail.com wrote:
Hi,
I'm trying to do something which should be simple I think .. passing
a function to toForm like so :
class AddClient {
def add (inhtml: NodeSeq) : NodeSeq = {
val client = Client.create
def processEntry () = {
client.save
S.notice (Entre : Prenom + client.prenom + Nom : +
client.nom)
}
client.toForm (Full (Ajouter Client), processEntry )
try:
client.toForm(Full(), processEntrry _ ) // the _ turns it into a
function
}
}
But I keep getting something like :
AddClient.scala:23: error: overloaded method value toForm with
alternatives (net.liftweb.util.Box[String],
(com.envirobiz.model.Client) = Any)scala.xml.NodeSeq and
(net.liftweb.util.Box[String],String)scala.xml.NodeSeq cannot be
applied to (net.liftweb.util.Full[java.lang.String],Unit)
[INFO] client.toForm (Full (Ajouter Client), processEntry )
Looking at the spect I see :
def toForm(button : Box[String], f : (A) = Any)
So seems to me it should take any func... ,
Any ideas ?
Note that i'm new to scala/lift...
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Re: [Lift] IdPK Model boiler-plate
Good idea. Please open a ticket at
https://liftweb.assembla.com/spaces/liftweb/tickets and assign it to me.
On Sun, Mar 7, 2010 at 10:57 AM, aw anth...@whitford.com wrote:
My model classes mix-in IdPK and have the following boiler-plate for
equals and hashCode:
class Team extends LongKeyedMapper[Team] with IdPK {
override def equals (other : Any) = other match {
case t : Team if t.id.is == this.id.is = true
case _ = false
}
override def hashCode = this.id.is.hashCode
}
I'm pretty sure I acquired this boiler-plate for equals and hashCode
from this Google Group.
Is this implementation for equals and hashCode a good idea? If so,
shouldn't it be part of the IdPK trait?
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Re: [Lift] Re: [lift] superficial first impressions from a rails junkie
Jonathan, your comments are someplace between not helpful and troll-like. It'd be best if you did not continue to participate in this thread. On Sun, Mar 7, 2010 at 5:36 AM, jonathan mawson umpti...@gmail.com wrote: If there's no rational reason to use Lift, then perhaps you could find another community to spend your time in. I didn't say that there was no rational reason to use Lift BUT THAT YOU ARE FAILING TO COMMUNICATE WHAT THAT REASON MIGHT BE TO POTENTIAL USERS! You can't expect potential users to be Internet mind readers. Which is what your current strategy amounts to - other than People will try Lift because there is a buzz about Scala. Lift is not a clone of any framework. It's different and there are reasons for those differences. If you don't like them, please use what you like best. Use what feels most comfortable for you. Use what works best for you. I very carefully did NOT say that Lift should be a clone. I did say that, when you ask users to do things contrary to their expectations of a modern web framework, you tell them WHY you are asking them to do that and what the payoff will be for them. I'd talk them through these surprises with a series of short snippets in boxes - I'd also use these snippets for any gotchas like those critical spaces after the /. I might start with: Working through this tutorial you'll encounter a horrible surprise - Lift is not YARC! (Yet Another Rails Clone.) That is because we have designed Lift to be a fundamentally different creature to Rails. Rails is an excellent framework whose first priority is ease of use for simple jobs where server efficiency can be traded away to get a site running quickly with minimum effort. Lift is a framework designed for jobs where Rails has run out. A well designed Lift site can handle up to 20 times the traffic of an equivalent Rails site on the same server. And while it perhaps isn't as easy to do simple things in Lift as in Rails, it is much easier to do most of the hard ones. In a way, both frameworks carry their philosophy in their names - - Rails expects you, the programmer, to be happy to run on a relatively pre-determined track in return for a simpler life. - Lift, like its host language Scala, is designed for HEAVY LIFTING. Its priorities are delivering security, maintainability and performance over the widest possible range of applications. It makes obtaining these good things as simple as possible, but occasionally you just have to eat your greens if you want to grow up big and strong. Those are the rationales behind the design choices we made. Creating your first toy site with Lift will take longer than with Rails, but creating your first secure, scalable site will take less time. Whenever Lift wants you to do something particularly surprising in this tutorial you'll see another box explaining why and what the pay-off will be for you. You'll also see boxes warning you of any fiddly 'gotchas'. Happy Lifting! Lightly adapted that might work as an intro for Lift in general. It *differentiates* you from Rails and gives potential users the info they need to decide whether or nor Lift is right for them to try, which is what technical marketing should be about. (It also obeys the tell them three times rule of Writing Stuff You Really Want People To Remember.) Oh - and I have now seen the Lift logo, and I think it looks fine! -- View this message in context: http://old.nabble.com/superficial-first-impressions-from-a-rails-junkie-tp27802055p27811402.html Sent from the liftweb mailing list archive at Nabble.com. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: [lift] superficial first impressions from a rails junkie
On Sun, Mar 7, 2010 at 12:15 PM, Naftoli Gugenheim naftoli...@gmail.comwrote: I think that Jonathan was impolite in expressing his frustration at being misunderstood. First, don't you think that it's ironic that someone who was trying to teach us about marketing was so incapable of expressing himself effectively? Would you take the marketing advice of someone who cannot communicate basic concepts without resorting to belittling and screaming? What you don't know is that Jonathan made some posting that were more troll-like that I did not approve (something that's very rare) because they were just rants about us not understanding what he was saying (including quotes like Lift is just the flavor of the month). Some other things you don't know is that Jonathan contacted me privately... something I generally frown on (see http://groups.google.com/group/liftweb/browse_thread/thread/c7a97cbf60780f0 ) He suggested that I read some books by Geoffrey Moorehttp://mdv.com/team_bio.html?id=11and some books about not letting MBAs fleece you. He also offered to help with marketing by offering his email address and no other information about who he was or why his help would be of value. Hmmm another example of not effective marketing. (and yes, I did search for him via Google and LinkedIn to see if he was some hot shot who was used to talking in short-hand... but he was no where to be found.) I suggested that he check out who I run with and asked him to tell me why he would help with marketing Lift. His response was that he Googled me and was unable to find any information about me on Google, that I was not nearly as good at communications as I thought and that I should include information (a mini-CV in his words) on the Lift site. So, let's work through this. First, there are a couple of links in my sig-line. The first one is to Apress's listing for my book: http://www.apress.com/book/view/1430219890 This page includes information about the author: David Pollak David Pollak has been writing commercial software since 1977. He wrote the award–winning Mesa spreadsheet, which in 1992 was the first real–time spreadsheet. Wall Street companies traded billions of dollars a day through Mesa. In 1996, David sold his company to CMP Media and became CTO of CMP Media’s NetGuide Live and was one of the first large–scale users of Java and WebLogic to power an Internet site. In 1998, David released Integer, the world’s first browser–accessible, multiuser spreadsheet. Since 2000, David has been consulting for companies including Hewlett–Packard, Pretzel Logic/WebGain, BankServ, Twitter, and SAP. David has been using Scala since 2006 and is the lead developer of the Lift Web Framework. There's also a link to my Twitter feed http://twitter.com/dpp which contains a link to my blog http://blog.lostlake.org/. Now, let's take a look at the Lift http://liftweb.net web site. On the front page is a mini-bio: David Pollak has been writing commercial software since 1977. He wrote the first real-time spreadsheet and the worlds highest performance spreadsheet engine. Since 1996, David has been using and devising web development tools. So, even without searching, one can find a fair amount about me. But, let's click through to the Team page on the Lift site. There's a slightly longer bio: David Pollak has been writing commercial software since 1977. He wrote the first real-time spreadsheet and the worlds highest performance spreadsheet engine. Since 1996, David has been using and devising web development tools. As CTO of CMP Media, David oversaw the first large-scale deployment of WebLogic. David was CTO and VPE at Cenzic, a web application security company. David has also developed numerous commercial projects in Ruby on Rails. In 2007, David founded the Lift Web Framework open source project. If you spend a little time with some of the other team bios, one in particular will seem out of place... a suit. Specifically, Debby Meredith's bio reads: I'm a currently an engineering management consultant and a venture partner at JAFCO Ventures. I work hands-on with company founders, helping to assemble world class teams, architect software products and roadmaps, and establish operational processes to build success from the beginning. Previously, I was a venture partner at Mohr Davidow Ventures, VP Eng at Netscape, VP Eng at Collabra Software, VP Eng at Slate Software, and had key technical positions at Metaphor Computer Systems, Logitech, and Bell Laboratories. So, we've got someone who is a venture partner at JAFCO (a VC firm) who used to be with MDV (another VC firm) who is a Lift committer. Now, let me connect a couple of dots. Geoffrey Moore is a venture partner at MDV where Debby used to be a Venture partner. MDV also funded Cenzic. What do you think the chances are that I've at least heard of Crossing the Chasm? What are the chances I've read Crossing the Chasm? What are the chances that I've spent more than
Re: [Lift] Activity
On Sat, Mar 6, 2010 at 7:10 PM, Martin martin.lyn...@gmail.com wrote: Hey, First of all, let me take the complete opposite stance observed from one of the most reason posts from a Rails Junkie. I'm very excited to see a framework that takes the good from so many different projects and houses it under a language that does the same. I find it refreshing to have the powerful tools developed around Java available for development in this new Scala language and the Lift framework. No matter how much one hates the design choices and the verbosity of the most popular platform in our lifetime, it is only a benefit that we have access to the years of effort devoted to it. The powerful compiler behind Scala is my sole reason for preferring it to ports like JRuby and Groovy. Now to the point of my query, what is the activity and excitement levels around lift at this point? I understand that money drives the world and to make a framework successful one must market like Rails and make some bank to promote future maintenance and improvements. Please see http://www.ohloh.net/p/liftweb/ They do an analysis of commits to open source projects. A couple of take-aways is the increase in both team size and number of commits to Lift over the last year. 33 different people contributed code. That's significant momentum. I notice the last production quality release was over a year ago; Actually, it was last week. Companies including FourSquare run their service on Lift milestone releases. We were hoping to have Lift 1.1 (now 2.0) out a long time ago, but we've been tracking Scala 2.8 which was, well, supposed to be out a long time ago. So, every few months, it looks as if Scala 2.8 is just around the corner and it seems that it makes sense to hold off on the Lift 2.0 final until Scala 2.8. But, I spent a week hanging with Martin Odersky a few weeks back (as well as Paul Philips) and I think a mid to late Spring 2.8 release is a reality which means that a Lift 2.0 release will happen 3-6 weeks after that (depending on where in the month Scala lands and how stable the 2.8.0 release is). I do notice there have been much more frequent updates to say the wiki and the work on the 1.1 milestones. It just seems strange that a minor release on such a young project would taking such a long time. This will change after our 2.0 release. Perhaps we'll do monthly milestones and quarterly dot releases (ports of the best of the milestones that do not break API compatibility). This is a completely naive view of what is going on, and this is why i post this query because I want to be disproven so I can feel comfortable suggesting the use of this framework for the long term. Take a look at ticket velocity and review board velocity. As you watch the increase in number of tickets, you'll get, I hope, a sense of vibrance in the code and the community. The other thing to look at is the mailing list velocity and size. http://groups.google.com/group/liftweb/about?hl=en We've doubled the number of messages on the list over last year and the mailing list size is 1,700 and growing steadily at an average of 5-7 new people per day. Thanks for letting me take some of your time away from more important things :). I just figured seeing this was a question in my mind, others thinking about using the framework might have the same question. I hope I've addressed your concerns. If you are thinking about Lift for a production site (profit or non-profit), please contact me off-list to tell me about your project. I may have people that could help you communicate effectively with your team about the risks and benefits of going with Lift. Thanks, David -- Martin -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] superficial first impressions from a rails junkie
Thanks for your comments. I did Ruby/Rails for 2 years until I found Scala in November 2006. Please allow me to rebut your thoughtful post. On Fri, Mar 5, 2010 at 8:43 PM, cageface milese...@gmail.com wrote: Like many other web developers, I abandoned some heavyweight Java web frameworks about 6 years ago for Rails and have been working pretty much exclusively in Rails ever since. Back when I was doing Rails, the state of Rails' documentation was not materially different from the current state of Lift's documentation with the exception of DHH's awesome book (which is my all time favorite tech book). Most of the online documentation was weak or non-existent. It was never possible to figure out what mixins impacted the behavior of a class. I spent most of my time reading Rail's source to figure out how to do anything that marginally off the beaten path. However, I've always had a secret lust for functional languages so when I heard about Scala and Lift I decided to take a closer look. My first impression of the community from studying this list and many other blogs, articles etc is that it's a group of smart, dedicated folks that have generously dedicated a lot of time and energy to making Lift a first-class alternative to the more conventional options. However, my first brush with the framework itself has so far left a very different impression. I think one of the reasons Rails caught on so quickly in the beginning was that it was marketed brilliantly. This is one of the things I wanted to do differently with Lift. I didn't want to market it. I wanted to build solid technology that addressed serious needs including security, highly interactive apps, and scalability. I also wanted to create a welcoming community (Warren does not represent this community except for his brains which were missing last night when he wrote his snarky response) so that the adoption of Lift would come from substance, not a pile of fanboys (this is not a reference to you) who were not able to see past the flaws in Rails. DHH made Rails look so simple, stylish and intuitive that anybody drowning in the bulk and complexity of Java web dev at the time couldn't help but take notice. Lift, in contrast, and particularly for anybody with a prior history in Java, seems very daunting and rough. It depends on what you want to do. One of the problems I found with new Rails apps was that they were ugly and unstyled. We adopted Blueprint CSS as a default for Lift projects so at least they looked clean. Further, Lift's templating with surround makes it much easier to swap out better looking sites. My experience doing Rails (remember, this goes back 5 years, so this situation may have changed) was that I spent the first hour of any project doing the layout. The second issue with Rails apps is when you do them easy they tend not to be secure. When I say secure, I mean this kind of secure: http://twitter.com/rasmus/status/5929904263 When you protoype in Lift, you get secure by default. You don't have to have the security sprint or other stuff after prototype stage to get things right. The following impressions are very much superficial first impressions and may really have no deeper substance than that but I think first impressions count for a lot in this sphere. While I agree, that early impressions are important. But at the same time, Lift is unabashedly different. It's different for reasons and those reasons are often borne out of experience. It takes some time to get used to the differences. My goal with the getting started guide was to set up ET-style Reese's Pieces so that the reader would get a sense of success and a sense of Lift's difference and benefits. I'm sorry that the pieces didn't taste good to you. ;-) First, the liftweb.net site is nice. It's a clean, elegant, contemporary design. So far so good. Let's click on getting started. What's this? PDF? Who uses PDF? While I'm not sure I 100% agree with Tim's 6 million dollar man argument about PDF, PDF is common and useful... Scribd (which is definitely in the hip-cool-kids side of street) is built on PDF. Nevermind, let's look at the HTML. Gack! This looks like an academic LaTEX conversion from the 90s. Layout and formatting are next to non-existent. This doesn't look like the intro for a simple, ready-to-use tool. Okay... sorry... but this is a gratuitous swipe. Ugly == Not Easy to Use. Nope. Sorry. I don't buy this. Oh well, pushing past the wall of text intro we discover that we need Maven. Alarms are starting to go off in the heads of many Java refugees that remember Maven as the nadir of the XML-situp overabstracted agony that was pre-Rails Java web dev. We are not in the build tool business. When we started with Lift, the options were Ant and Maven. You can read this list for the occasional anti-Maven flare-up. I stand by the decision. Currently, there are a couple of alternatives to Maven.
Re: [Lift] superficial first impressions from a rails junkie
On Fri, Mar 5, 2010 at 9:58 PM, Warren Henning warren.henn...@gmail.comwrote: tl;dr Want a cookie for your efforts? If you don't like Lift, don't use it. Problem solved. Hooray, turkey for everyone! Warren -- this comment is way out of bounds for the Lift list. You know I love your sarcasm and your grumpy-as-an-80-year-old-at-21 attitude, but dude... somewhere else please. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: [lift] superficial first impressions from a rails junkie
On Sat, Mar 6, 2010 at 9:02 AM, jonathan mawson umpti...@gmail.com wrote: Timothy Perrett wrote: By all means, come here with questions and you will find this group to be very responsive and helpful, but do not come here and automatically assume that you can illuminate to us the errors in our project marketing or experience. What's automatic about Mark's analysis? He's a new Lift user, he's told you what the new user experience is like - he did the appropriate work to be able to do this. If there is anything automatic here it is your dismissal of the problems that Mark had. This sort of user feedback is gold - he's made a real effort to tell you what trying to get started with Lift was like for him. And reading what Mark wrote, I'm sure that he is much brighter and more interested in Lift than the average Java/RoR programmer. Lift is not Rails. It really bugs me when people are like oh, well rails does XYZ. The guy never said it was. He explained why he switched to Rails and why he thinks Rails has been successful. The important point that Rails people who want their framework to takeoff have to understand here is ***that at no time during Mark's experience did anyone communicate a reason to him why Lift was worth persevering with.*** That's what marketing is about. If Mark had known there was a strong enough potential benefit then he would have persisted. At the moment Lift's only perceived benefit seems to be that it provides you with a web framework for Scala. That's a nice strategy for getting a couple of dozen FPophiles to commit code, but it won't take Lift anywhere in the real world of What does this framework do for my project/career/business. You need to start telling people what Lift especially well so that they have some idea why they might use it! The best effort I have seen to do this comes not from the Lift community but from another reviewer, here - http://ikaisays.com/2009/03/03/first-impressions-of-lift-scala-web-development-framework-from-a-ruby-on-rails-developer/ Other concerns: - I suspect that Lift has enough mass inside the Scala community to prevent the emergence of another web framework. And that without an acceptable web framework Scala - which I am now 100% in love with - will not be a successful language. - How much of the difficulty that people seem to have in using Lift is intrinsic to the framework and how much to poor docs? What are the ***pay-offs*** for those design decisions that have made Lift harder to use? You mistake different with harder. People who are used to one way to do things will find different harder than the same. In the case of view-first, there are plenty of posts as to why it's better. In the case of Maven, there are plenty of posts and discussions on that matter as well. More broadly, and I wish I had pointed this out to the OP, Lift projects are typically smaller than similar Rails projects. The couple of ports I've done, I've seen some substantive code reductions and significant test code reductions. And, what I've gotten in addition to a smaller code base is higher performance, more security, and more maintainability. So, Lift is in fact not harder to use. (Even when this simply means less Rails-like.) Communicating these would go a long way to reducing newbie frustration. Is Lift even designed to have as wide an appeal as RoR or Grails? If not, be frank about it and communicate where its strengths lie. -- View this message in context: http://old.nabble.com/superficial-first-impressions-from-a-rails-junkie-tp27802055p27805572.html Sent from the liftweb mailing list archive at Nabble.com. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: [lift] superficial first impressions from a rails junkie
On Sat, Mar 6, 2010 at 9:19 AM, jonathan mawson umpti...@gmail.com wrote: As this is likely to be very controversial, I'll recap one more time while my gf finishes dying her hair - - Don't ignore people like Mark. His feedback was detailed, thoughtful, and invaluable if want non-committers to use Lift - Do decide how you are going to position Lift. Position being about -- What can Lift do better than its rivals? -- Who should use it? Is it a master programmer's tool or accessible to the Drupal crowd? If inbetween, where exactly? Having done that then, rather than a new logo, I'd suggest writing a couple of articles about Lift that centre around above (Eg Lift is *the* tool for intermediate experienced Java programmers who need to deploy high performance sites that do X) There are articles in the pipeline. and creating a new and thoroughly debugged new user guide. And where are the bugs in the existing user guide? Further, the complaint of the OP seem to be the formatting is ugly (okay, we can address this), I don't like Maven (this will change) I don't like markup in my code, except I do this implicitly in Rails (yeah... not much to talk about). Get new users, sit them in front of a PC and watch what happens. Do not help them. Do make notes on what they do and say - and fix every problem that comes out this way. (I'd probably be willing to work on these things, although I expect the sentiment for lynching me will be stronger.) -- View this message in context: http://old.nabble.com/superficial-first-impressions-from-a-rails-junkie-tp27802055p27805716.html Sent from the liftweb mailing list archive at Nabble.com. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: [lift] superficial first impressions from a rails junkie
On Sat, Mar 6, 2010 at 5:50 AM, jonathan mawson umpti...@gmail.com wrote: Jeppe Nejsum Madsen wrote: Timothy Perrett timo...@getintheloop.eu writes: Sorry Jeppe, but I disagree. On which part :-) Maybe the not really into the visual aesthetics. What I meant was not that we don't care, but more that we will rather spend time on coding. The issue to date has been getting someone to work on it for free... The recession has worked against us here because people have been hand-to-mouth work wise, and couldn't spare time that wasn't paid for. Look at it this way: Committers work on the code for free and I guess that's also the case for many other OSS projects. Yet some still manage to create visually pleasing websites introduction material. I can only (perhaps falsely?) attribute this to the difference in focus/skills of the team. I actually come from a marketing / design background, and have tried to move this aspect of Lift along, but its been problematic with designers not committing and so forth. Lift needs a rebrand / restyle, yes, however, its easier said than done. My point exactly. If someone on the Lift community feels strong enough about this (and has the skills) it would move forward in the same way as the code...alas it doesn't, so we need to force it by trying to hire/manage someone external. /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. Rebranding Lift wouldn't be about logos. They're irrelevant to a product aimed at programmers. You need to identify an occupy-able niche and then communicate your advantage in that niche to the right people. That means saying convincingly - Lift does X better than existing solutions - Here's why you should believe that and invest time - Here is how to get started And that X has to be very concrete. You mean: Lift stresses the importance of security, maintainability, scalability and performance, while allowing for high levels of developer productivity. At the moment Lift's brand is It uses Scala, It has a reputation for being hard, and I don't know if anyone is really using it. You also have to kill the potential killer negatives - eg concerns that Lift will still be around in two or three years. This is more of a concern about Scala in general. Every available metric points to the fact that Lift has reached critical mass. Our community is larger than Wicket's. Our code velocity is faster than Wicket's. Etc. The bigger issue that I've heard from the corporate adoption side is will Scala be around in 2 years? I would also say that re-branding needs to happen *fast* before attention focuses on Grails - there is only so much new mindshare available at any time. Every Grails vs. Lift bake-off I've been involved, Lift has won hands down. Once you do Ajax or Comet, Lift wins. Once you try to scale, Lift wins. More generally, ever Java shop that's adopted Groovy and then Scala has dumped Groovy. The advantage that Groovy/Grails has is SpringSource/VMWare. But actual adoption is waning (just look at Tiobe). There will be an answer to the corporate types looking for support on Lift and Scala in the next few weeks. -- View this message in context: http://old.nabble.com/superficial-first-impressions-from-a-rails-junkie-tp27802055p27804368.html Sent from the liftweb mailing list archive at Nabble.com. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: Re: [lift] superficial first impressions from a rails junkie
On Sat, Mar 6, 2010 at 3:29 PM, jonathan mawson umpti...@gmail.com wrote: You mistake different with harder. People who are used to one way to do things will find different harder than the same. No, I don't. Different *is* harder. When there is a convention it should be followed unless there is a good reason not to do so. This is one of the half dozen or so key principles of usability. When you choose to do something in a way that requires extra effort - *especially* when there is a convention you could have followed - then tell people, briefly, that you have a good reason for doing so. One that will benefit them. In the case of view-first, there are plenty of posts as to why it's better. Said posts won't help when trying to get more people to use Lift. It's up to you to set your priorities, but if one of those is creating a framework that people use in significant numbers then you can't adopt a People could read posts attitude to your new user experience. Especially when RoR and Grails have set the bar so high. The couple of ports I've done, I've seen some substantive code reductions and significant test code reductions. And, what I've gotten in addition to a smaller code base is higher performance, more security, and more maintainability. So, Lift is in fact not harder to use. Sorry, no. A better result does NOT equal easier to use. It might equal Easier to use for a superior programmer who has tougher requirements. Otherwise Emacs and Latex would be easier to use than Word - and much easier than Notepad. What you are saying is that Scala is more powerful. Which is great, because in any software product category there are usually three viable niches - easiest to use, cheapest, and most powerful. In your shoes I'd think about going after that most powerful niche. I know that you're anti marketing, but not all marketing is BS. A lot of it - at least in technical products - is honest communication regarding the niches that your product is designed for. If you don't tell potential Lift users what Lift can do for them, why should they try it? There really isn't a rational reason. If there's no rational reason to use Lift, then perhaps you could find another community to spend your time in. And why create a framework which no one will use? Yeah, there are 1,700 nobodies on the Lift list. The folks at FourSquare and Novell and Innovation Games and Xerox and SAP and Siemenns and etc. are nobody. Lift is not a clone of any framework. It's different and there are reasons for those differences. If you don't like them, please use what you like best. Use what feels most comfortable for you. Use what works best for you. -- View this message in context: http://old.nabble.com/superficial-first-impressions-from-a-rails-junkie-tp27802055p27808051.html Sent from the liftweb mailing list archive at Nabble.com. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: superficial first impressions from a rails junkie
On Sat, Mar 6, 2010 at 12:13 PM, cageface milese...@gmail.com wrote: On Mar 6, 9:35 am, David Pollak feeder.of.the.be...@gmail.com wrote: Back when I was doing Rails, the state of Rails' documentation was not materially different from the current state of Lift's documentation with the exception of DHH's awesome book (which is my all time favorite tech book). Most of the online documentation was weak or non-existent. This is true, but *getting started* was extremely easy. Apparently you used Rails in a different era from me. Rails and Ruby and Gem were not native on OS X (it became part of the OS in 10.4). One had to be a serious guru to build and install the basic Ruby system. Even using RedHat and RPMs, it was a good 2 hours to get Ruby and Gem and Rails installed. Back in 2005-2006 Ruby and Rails were not easy to get started with. Once that was done, yes, the initial Rails project was easy to create... a tad easier than Tim's 1 line Maven command, but not that much easier. A few very non- intimidating commands and you were up running and making quick edits that appeared in real time. Yep. There is a difference between a statically compiled language and a dynamic one. There is a difference between keeping a fair amount of state around and not. There are costs and benefits with each. While I would like to make Lift easier to be change and reload out of the box, in general, if that is the barrier to adoption for a certain segment, then so be it. Once you started to dig a little deeper you ran into the problems you describe but by that point the fish was already on the hook. So, the key thing is what's the flash to bang. Yes, these days, the flash to bang with Rails is fast. Maybe we should have built the real time chat stuff as the first project. http://liftweb.blip.tv/file/2033658/ It's faster flash to bang. But, I disagree with the assertion that the flash to bang for Lift is long. Yeah, if someone is going to spend 2 minutes with Lift, we probably won't make a case. If someone spends enough time to see the Ajax features of Lift (especially coming from the Java frameworks, but even coming from Rails), we get a substantial number of folks who are hooked like http://groups.google.com/group/liftweb/browse_thread/thread/136d2accec22f300?hl=en(Lift is so complex but once you wrap your head around it is so easy :D ) This is one of the things I wanted to do differently with Lift. I didn't want to market it. I wanted to build solid technology that addressed serious needs including security, highly interactive apps, and scalability. I started working with Lisp other functional languages about 10 years ago and it's been frustrating to watch inferior languages like Ruby and Python sail past them in popularity over that time. I think a lot of this has to do with a naivety in the functional programming community that solving the hard problems is what matters and that people will naturally logically adopt tools that do this. Unfortunately, it appears that the opposite is much more often then case and that people choose easy fashionable first. A big part of gaining long term adoption of any technology is timing the chasm crossing such that when the chasm is crossed, there is long term sustainability. DHH promoted Rails too early in my opinion. VeriSign adopted Rails for some projects and after deploying those projects and then paying Zed Shaw to write Mongrel, VeriSign dumped Rails. Had Rails been lower visibility, the Rails community would not have suffered through this embarrassment followed by the Twitter embarrassment. To this day, even though Rails has high visibility and is more stable than it used to be, it is still tarred on the corporate side with the doesn't scale moniker. This has opened the doors for Grails. Another failing of Rails is the community. The Rails community is a significant detractor to adoption outside of the young hip kids. What we have in Lift is very solid technology, an excellent community, tremendous committers, and an increasing number of very high profile projects built on Lift. These are very solid, very defensible assets. But I'd rather try to cross the chasm and actively promote Lift and Scala to the broader community when we know what community we're promoting to (hip Web 2.0+ kids, Enterprisy folks, ???), what the real value proposition is, and when we have a revenue model that is not based on selling out to the likes of Sun or VMWare. As an aside, I've been getting calls from VCs lately about investing in Lift Scala. Some of them just want to bet on a horse and some of them have been actively working with me, Martin and others to figure out what Lift and Scala look like across the chasm. But right now, Lift is a community, committers and excellent technology for building secure, maintainable, highly interactive web sites. When it's time to build a business around Lift and Scala, you will see
Re: [Lift] Re: Newbie Q: how to append html on ajaxForm submission
On Fri, Mar 5, 2010 at 2:00 AM, Lukasz Kuczera kuk...@gmail.com wrote: So i've solved it on my own :D Using jQuery in Lift :D Lift is so complex but once you wrap your head around it is so easy :D Glad you found the answer... and yes... it's good to build your own JavaScript helpers for Lift. Most of the JavaScript stuff that's currently in Lift is based on the helpers I and some other committers have used... thus they are not complete. More generally, there's no need to prefix your email subjects with Newbie. We're all newbies on this list. I asked a newbie question about json yesterday and I've got more Lift experience than anyone else with Lift. ;-) Please ask polite questions (and yours are). Please help others when you know the answer. Please help make this community better! http://pastebin.com/J5msUQ56 On Mar 5, 9:57 am, Lukasz Kuczera kuk...@gmail.com wrote: Hi Folks, I've hard time to figure out how to append html snippet after ajaxForm is submitted. I know how to make it in jQuery but i would prefer to have it in one place. My code is:http://pastebin.com/wgAXd2ag I would love to have AppendHtml(afterId: String, body: NodeSeq) method. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] email validation configuration
If you set the Mailer.authenticator in Boot, that will do authentication for mail sending. On Fri, Mar 5, 2010 at 5:33 AM, Jeppe Nejsum Madsen je...@ingolfs.dkwrote: On Fri, Mar 5, 2010 at 2:21 PM, GA my_li...@me.com wrote: Hello guys, could you please let me know where I can find information about how to configure the email validation for the MegaProtoUser? I do not know how to tell Lift about our SMTP server, Authentication data, etc. I was searching in the wiki and this list but I could not find anything. Have a look at the Mailer object. Specifically, it reads either jndi or the property mail.smtp.host for the hostname. Not sure if handles authentication. /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Wow... Lift has some amazing stats
Folks, I just looked at Lift's stats on ohloh. ( http://www.ohloh.net/p/liftweb ) A couple of key items: Very large, active development team Over the past twelve months, 33 developershttp://www.ohloh.net/p/liftweb/contributorscontributed new code to Lift http://www.ohloh.net/p/liftweb. This is one of the largest open-source teams in the world, and is in the top 2% of all project teams on Ohloh. For this measurement, Ohloh considered only recent changes to the code. Over the entire history of the project, 45 developers have contributed. Increasing year-over-year development activity Over the last twelve months, Lift http://www.ohloh.net/p/liftweb has seen a substantial increase in activity. This is probably good sign that interest in this project is rising, and that the open source community has embraced this project. Ohloh makes this determination by comparing total number of commits made by all developers during the most recent twelve months with the same figure for the twelve months before that. The number of developers and total lines of code are not considered. So, a big thanks to the community for driving Lift and another big thanks to the Lift committers for adding so much to Lift! Thanks, David -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: Lift security vulnerability
On Fri, Mar 5, 2010 at 9:32 AM, Dano olearydani...@gmail.com wrote:
I would never claim to be astute. However, I did observe that
demo.liftweb.net is now built using 2.0-M3 as is clearly listed at the
bottom of the page. I also observed that the Wizard example is still
broken (paste binary characters into 'First Name' and then click the
Next button). I have not yet registered for an account with Assembla
but would be happy to file the bug.
I don't know what you mean by pasting binary characters into a field, but
I have updated the Arc Challenge code to:
class ArcChallenge extends StatefulSnippet {
var dispatch: DispatchIt = {case _ = xhtml = ask}
def control: String = (for (i - 0 until 65000) yield i.toChar).mkString
/**
* Step 1: Type in a Phrase.
*/
def ask = {
p
Say Anything:
{text(, p = phrase = control + p + control)}
{submit(Submit, () = dispatch = {case _ = xhtml = think})}
/p
}
/**
* Step 2: Show a link that takes you to the Phrase you entered.
*/
def think = submit(Click here to see what you said,
() = dispatch = {case _ = xhtml = answer})
/**
* Step 3: Show the phrase.
*/
def answer = pYou said: {phrase}/p
private var phrase =
}
}
}
This code inserts characters 0 - 65,000 into the string to be sent back to
the browser, including every control character.
Once again, if you have a reproducible case (the exact steps that someone
must follow) to cause Lift to emit illegal XHTML, please open a defect on
Assembla
Dan
On Mar 4, 7:33 pm, Ross Mellgren dri...@gmail.com wrote:
Check dpp's response as of 8:01
-Ross
On Mar 4, 2010, at 7:49 PM, Naftoli Gugenheim wrote:
What version is the demo running?
-
Danoolearydani...@gmail.com wrote:
Just saw that Lift 2.0-M3 was released. I looked to see if the
vulnerability was still present in demo.liftweb.net and I am still
able to generate exceptions in the browser when I paste binary
characters in the textfields for the Wizard, Wizard Challenge, and Arc
Challenge examples in the Misc section.
Don't know if this remaining problem is supposed to be handled by the
application or framework, but thought I would make a post to alert the
group.
Dan
On Feb 24, 11:49 am, Dano olearydani...@gmail.com wrote:
The recent scala days conference activity may have cause the updates
to this thread to escape notice. Just wondering if there is concern
about the remaining binary character problems I noted in my prior
post.
Thanks in advance.
Dan
On Feb 22, 1:34 pm, Dano olearydani...@gmail.com wrote:
More information on this in case anyone is interested. If you go to
theliftdemo website, it appears the issue with characters is mostly
addressed except for the Misc code section. Specifically, the
Wizard, Wizard Challenge and Arc Challenge #1 examples will
generate XML parsing errors.
For these problems, I am not sure if the issue if the example or the
framework. If the issue is with the example, it would be good to
know
whatLiftapps need to do to avoid getting bitten by binary characters
entered into form fields.
Thanks in advance.
Dan
On Feb 17, 11:06 am, Dano olearydani...@gmail.com wrote:
Hello,
I was wondering if the fix for the control characters issue was
included in 2.0-M2. I just did a test with ourLiftapplication built
with 2.0-M2 and I am still seeing problems (i.e. javascript
exceptions
- NS_ERROR_INVALID_POINTER).
Thanks in advance.
Dan
On Feb 3, 9:08 am, David Pollak feeder.of.the.be...@gmail.com
wrote:
Thanks for pointing that out. There are other problems as well...
I'll fix
them (in both the Scala andLiftdiffs)
On Wed, Feb 3, 2010 at 7:39 AM, Feng Zhang sharpzh...@gmail.com
wrote:
I found that in the fix, \n is changed to \t, while \t to \n. Is
this
desired behavior?
Thank you,
Feng
On Wed, Feb 3, 2010 at 9:20 AM, Indrajit Raychaudhuri
indraj...@gmail.com
wrote:
1. Fix in head/master (2.0-SNAPSHOT) and prepone 2.0-M2.
2. Backport in 1.0.x branch and spin 1.0.4. We haven't marked
1.0.x
'unsupported' yet. Forcing apps to move to 2.0-M2 just for this
vulnerability fix isn't fun.
Cheers, Indrajit
On 03/02/10 3:34 PM, Timothy Perrett wrote:
+1
Fix it in head, no need to back-port; M2 is only around the
corner.
Cheers, Tim
On 3 Feb 2010, at 09:49, Jeppe Nejsum Madsen wrote:
David Pollakfeeder.of.the.be...@gmail.com writes:
I'd like to get a sense of how important the community views
this
defect.
Is it a backport the fix to every milestone and release
yesterday or
is it
a fix it in 2.0-M2 or someplace in between.
For me, it's fix it in 2.0-SNAPSHOT
/Jeppe
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Re: [Lift] Re: Lift security vulnerability
On Fri, Mar 5, 2010 at 10:26 AM, Dano olearydani...@gmail.com wrote: I think I would like to amend my last post by asking if it is possible that the lift-json library support the ability to strip out binary characters since many times an application uses the results of JSON operations to render back to the client. Control characters are legal in JSON so it's not the place of the library to strip out control characters. If you're sending JSON strings that are supposed to be valid XHTML, then it's up to your app to make sure the Strings are valid. If you are using Scala's XML literals and toString, you are hitting a bug in the XML libraries that render incorrect Strings. I have fixed the bug in the 2.8 branch, but there's no practical way to go back and make the fix part of 2.7.x. If you use Lift's AltXML library to convert the XML to String. Lift's library also has the patch to ensure that XML - String is valid per this W3C page: http://www.w3.org/International/questions/qa-controls Thanks. Dan On Mar 5, 9:53 am, Dano olearydani...@gmail.com wrote: I can reproduce it in our application, but I think it is not necessarily due to Lift. This is what I am trying to sort out. We have client-side javascript which is sending JSON commands to the server and things blow up once things come back from the server. In this case, Lift is not responsible for the rendering so I would say this is an application issue. I am poking at the demo lift application to try to flush out issues common to the group and understand what is a framework issue and what needs to be addressed by the application. Thanks. Dan On Mar 5, 9:47 am, Naftoli Gugenheim naftoli...@gmail.com wrote: Can you reproduce the vulnerability in your own M3 app? - Danoolearydani...@gmail.com wrote: I would never claim to be astute. However, I did observe that demo.liftweb.net is now built using 2.0-M3 as is clearly listed at the bottom of the page. I also observed that the Wizard example is still broken (paste binary characters into 'First Name' and then click the Next button). I have not yet registered for an account with Assembla but would be happy to file the bug. Dan On Mar 4, 7:33 pm, Ross Mellgren dri...@gmail.com wrote: Check dpp's response as of 8:01 -Ross On Mar 4, 2010, at 7:49 PM, Naftoli Gugenheim wrote: What version is the demo running? - Danoolearydani...@gmail.com wrote: Just saw that Lift 2.0-M3 was released. I looked to see if the vulnerability was still present in demo.liftweb.net and I am still able to generate exceptions in the browser when I paste binary characters in the textfields for the Wizard, Wizard Challenge, and Arc Challenge examples in the Misc section. Don't know if this remaining problem is supposed to be handled by the application or framework, but thought I would make a post to alert the group. Dan On Feb 24, 11:49 am, Dano olearydani...@gmail.com wrote: The recent scala days conference activity may have cause the updates to this thread to escape notice. Just wondering if there is concern about the remaining binary character problems I noted in my prior post. Thanks in advance. Dan On Feb 22, 1:34 pm, Dano olearydani...@gmail.com wrote: More information on this in case anyone is interested. If you go to theliftdemo website, it appears the issue with characters is mostly addressed except for the Misc code section. Specifically, the Wizard, Wizard Challenge and Arc Challenge #1 examples will generate XML parsing errors. For these problems, I am not sure if the issue if the example or the framework. If the issue is with the example, it would be good to know whatLiftapps need to do to avoid getting bitten by binary characters entered into form fields. Thanks in advance. Dan On Feb 17, 11:06 am, Dano olearydani...@gmail.com wrote: Hello, I was wondering if the fix for the control characters issue was included in 2.0-M2. I just did a test with ourLiftapplication built with 2.0-M2 and I am still seeing problems (i.e. javascript exceptions - NS_ERROR_INVALID_POINTER). Thanks in advance. Dan On Feb 3, 9:08 am, David Pollak feeder.of.the.be...@gmail.com wrote: Thanks for pointing that out. There are other problems as well... I'll fix them (in both the Scala andLiftdiffs) On Wed, Feb 3, 2010 at 7:39 AM, Feng Zhang sharpzh...@gmail.com wrote: I found that in the fix, \n is changed to \t, while \t to \n. Is this desired behavior? Thank you, Feng On Wed, Feb 3, 2010 at 9:20 AM, Indrajit Raychaudhuri indraj...@gmail.com wrote
Re: [Lift] Re: Lift security vulnerability
On Fri, Mar 5, 2010 at 12:06 PM, Dano olearydani...@gmail.com wrote: I should have been more clear on 'pasting binary characters'. At the url http://www.webmasterworld.com/forum39/1098.htm, they talk about an issue with binary characters. I copied the 'square character' text (which I have confirmed are binary) from that page into the Wizard example on the demo lift site. Dan, And I did the same thing and it caused no problems. I also modified the example code to print out the characters and they were in fact control characters (1 and 4). They can through the other side (back to my browser) stripped from the XHTML. As I said, if there is a reproducible case that you can show against Lift 2.0-M3 or 2.0-SNAPSHOT, open a ticket. However, in the future, please do not expect that I'll spend any more of my time addressing your issues. David As to JSON, our client side code is sending JSON containing what the user entered in the form. Based on the above, it sounds like we should strip the binary characters when processing the JSON commands. Thanks. Dan On Mar 5, 10:49 am, David Pollak feeder.of.the.be...@gmail.com wrote: On Fri, Mar 5, 2010 at 10:26 AM, Dano olearydani...@gmail.com wrote: I think I would like to amend my last post by asking if it is possible that the lift-json library support the ability to strip out binary characters since many times an application uses the results of JSON operations to render back to the client. Control characters are legal in JSON so it's not the place of the library to strip out control characters. If you're sending JSON strings that are supposed to be valid XHTML, then it's up to your app to make sure the Strings are valid. If you are using Scala's XML literals and toString, you are hitting a bug in the XML libraries that render incorrect Strings. I have fixed the bug in the 2.8 branch, but there's no practical way to go back and make the fix part of 2.7.x. If you use Lift's AltXML library to convert the XML to String. Lift's library also has the patch to ensure that XML - String is valid per this W3C page:http://www.w3.org/International/questions/qa-controls Thanks. Dan On Mar 5, 9:53 am, Dano olearydani...@gmail.com wrote: I can reproduce it in our application, but I think it is not necessarily due to Lift. This is what I am trying to sort out. We have client-side javascript which is sending JSON commands to the server and things blow up once things come back from the server. In this case, Lift is not responsible for the rendering so I would say this is an application issue. I am poking at the demo lift application to try to flush out issues common to the group and understand what is a framework issue and what needs to be addressed by the application. Thanks. Dan On Mar 5, 9:47 am, Naftoli Gugenheim naftoli...@gmail.com wrote: Can you reproduce the vulnerability in your own M3 app? - Danoolearydani...@gmail.com wrote: I would never claim to be astute. However, I did observe that demo.liftweb.net is now built using 2.0-M3 as is clearly listed at the bottom of the page. I also observed that the Wizard example is still broken (paste binary characters into 'First Name' and then click the Next button). I have not yet registered for an account with Assembla but would be happy to file the bug. Dan On Mar 4, 7:33 pm, Ross Mellgren dri...@gmail.com wrote: Check dpp's response as of 8:01 -Ross On Mar 4, 2010, at 7:49 PM, Naftoli Gugenheim wrote: What version is the demo running? - Danoolearydani...@gmail.com wrote: Just saw that Lift 2.0-M3 was released. I looked to see if the vulnerability was still present in demo.liftweb.net and I am still able to generate exceptions in the browser when I paste binary characters in the textfields for the Wizard, Wizard Challenge, and Arc Challenge examples in the Misc section. Don't know if this remaining problem is supposed to be handled by the application or framework, but thought I would make a post to alert the group. Dan On Feb 24, 11:49 am, Dano olearydani...@gmail.com wrote: The recent scala days conference activity may have cause the updates to this thread to escape notice. Just wondering if there is concern about the remaining binary character problems I noted in my prior post. Thanks in advance. Dan On Feb 22, 1:34 pm, Dano olearydani...@gmail.com wrote: More information on this in case anyone is interested. If you go to theliftdemo website, it appears the issue with characters is mostly addressed except
Re: [Lift] Re: Lift or Scala first?
Try working through: http://liftweb.net/docs/getting_started/mod_master.html If you find yourself confused about stuff at the language/syntax level, then by all means, buy my book. ;-) On Fri, Mar 5, 2010 at 2:42 PM, Peter Robinett pe...@bubblefoundry.comwrote: Yes, yes, yes! David's book was a fantastic guide for me as I learned Scala and Lift at the same time. Going back to the original question, I've learned a language and a framework at the same time twice (Lift and Scala, Pylons and Python) and I'm torn. On one hand having lots of high quality example code and defined goals really helped guide my learning but on the other hand you have that much more to learn at all once. I guess it really depends on your style of learning. Just my two cents... Peter On Mar 5, 2:23 pm, Wilson MacGyver wmacgy...@gmail.com wrote: I highly recommend first you read chapter 1-5 of Beginning Scala by David Pollak. then you are ready to start working through lift's tutorial, samples, etc. On Fri, Mar 5, 2010 at 12:19 PM, Mini Naim minin...@gmail.com wrote: Hi guys: I have a simple question, it's necessary to learn Scala first? or i can go with Lift framework, without learn Scala language? Thanks -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group athttp:// groups.google.com/group/liftweb?hl=en. -- Omnem crede diem tibi diluxisse supremum. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: non snapshot version of lift for scala 2.8
I've been using Lift's 280_port_refresh branch for developing Goat Rodeo and it's been working quite well for me. We're going to wait a little while (probably until a Scala 2.8 release candidate) before publishing a Lift on Scala release (vs. snapshot). On Thu, Mar 4, 2010 at 6:36 AM, Lukasz Kuczera kuk...@gmail.com wrote: I'm developing blog app on 280 and so far no problems yet. Only one weird thing i see is that CRUDify shuffles columns, data is misplaced with header in tables, but I didn't have time yet to look at it closer. BTW is there any public blog app available for Lift ? None that I know of. If there is i'm wasting my time i hope not so i could publish it as a give back ;) That'd be wicked awesome! On Mar 4, 12:32 pm, Jeppe Nejsum Madsen je...@ingolfs.dk wrote: On Thu, Mar 4, 2010 at 12:27 PM, Indrajit Raychaudhuri indraj...@gmail.com wrote: On 04/03/10 3:26 PM, Jeppe Nejsum Madsen wrote: On Thu, Mar 4, 2010 at 10:39 AM, Indrajit Raychaudhuri indraj...@gmail.com wrote: Lukasz, We don't have non-SNAPSHOT version of Lift for scala 2.8 branch yet. You are encouraged to use 2.0-scala280-SNAPSHOT and report any issue that you encounter. Is there a status of the 2.8 branch somewhere on what works and what doesn't? (Ie. are some modules missing, known things that don't work) Or is everything ported and stuff that doesn't work is a defect? The only module missing at the moment is lift-osgi and related ones because it is dependent on 2.8 port of scalamodules. Heiko said one is on its way as an Eclipse project (www.eclipse.org/proposals/scalamodules). The rest are either of: - defects - non-functional because of API change - sub-optimal design - combination of the above (look for the comment FIXME: 280 in the code-base) I would love to get to the 2.8 Eclipse plugin and I've just started a new Lift project where I can accept some bumps along the road, but I've held off until now because I wasn't really sure of the status If you can accept the bumps, you are welcome to give scala 2.8 port a shot. This would be great in fact. Cool! Thanks for the update, I think I'll try it... /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: Response Optimizations too aggressive
On Thu, Mar 4, 2010 at 9:27 AM, aw anth...@whitford.com wrote:
On Mar 4, 6:56 am, Naftoli Gugenheim naftoli...@gmail.com wrote:
How about
LiftRules.stripComments.default.set( () = !Req.isIE)
etc.?
This is where Lift's FactoryMaker shines. You can modify the behavior of
stripComments on a request-by-request basis. You can have a snippet called
from your default template that tests the request and does:
LiftRules.stripComments.request.set(S.request.map(!_.isIE) openOr false)
But, as you point out, that means that CometActors will not get the right
settings... so you can set the rule on a session-by-session basis:
LiftRules.stripComments.request.set(S.request.map(!_.isIE) openOr false)
If that's not enough, you could also do the following in Boot.scala:
object shouldStripComments extends SessionVar(S.request.map(!_.isIE) openOr
false)
S.addAround(List(new LoanWrapper {
def apply[T](f: = T): T =
LiftRules.stripComments.doWith(shouldStripComments.is)(f)
}))
The above code wraps each request with access to the shouldStripComments
Session Variable.
The above vomit of different options is more for the benefit of those that
are confused by FactoryMaker and why it seems so complex... it's because it
offers a ton of different flexibility.
Thanks,
David
Well, this doesn't quite work because I need a Req class instance, not
just the static object.
Also, to me, this determination is really at the Session level rather
than the Request level as I don't expect it to change. But of course
I don't have a Session.isIE field... What about Comet responses? I
have no Request in that scenario, but is it using the same code to
produce the xhtml?
I see that the Factory trait has a session-specific Maker and a
request-specific Maker, but it is unclear to me how I can get that
context. I require more guidance.
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Re: [Lift] Textmate bundle with codecompletion (beta)
I might have to fire up my Mac to try this out. ;-) On Wed, Mar 3, 2010 at 3:34 PM, Mads Hartmann Jensen mads...@gmail.comwrote: Ok, This is the last time I'll bump this (I promise) - anyone using TextMate can follow the bundle on github. I improved the bundle and it's fairly usable now, check out a teaser video here: http://www.sidewayscoding.com/2010/03/textmate-lift-bundle-v02.html Thanks On 23/02/2010, at 19.08, Mads Hartmann Jensen wrote: Duh, I comittet a wrong version of the bundle to git! The right version is up now if you wan't to give it a try Indrajit :) I would appreciate the feedback: http://github.com/mads379/Lift-TextMate-Bundle On 22/02/2010, at 13.12, Mads Hartmann Jensen wrote: Don't get too excited, it's very beta right now ;) Sent from my iPhone On 22/02/2010, at 13.04, Indrajit Raychaudhuri indraj...@gmail.com wrote: Heavens! Need to give this a shot. On 22/02/10 4:55 PM, Mads Hartmann wrote: Hello everyone, I've been working a bit on a TextMate bundle for Lift projects that has codecompletion. It's still very beta but I'm sure someone would find it helpfull :) If you're interested you can read a bit more about it here: http://www.sidewayscoding.com/2010/02/lift-textmate-bundle-now-with-primitive.html NB: It's nowhere near as good as what I've seen in intelliJ (haven't tried netbeans or eclipse) but that doesn't mean it isn't helpful :) If you want to help out, please fork me on github http://github.com/mads379 -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Newbie Q: can I manually create a LiftSession?
Do you want to create/access a LiftSession from outside a Lift-handed
request, but make sure the same LiftSession is available when you access the
Lift parts of your app? (sorry, I want to make sure I understand the
problem)
Right now, there's no good way to do that... sorry :-(
Feel encouraged to open a ticket on it at
https://liftweb.assembla.com/spaces/liftweb/tickets It'd be ideal if you
could include a test application so we could verify it was doing the right
thing.
On Wed, Mar 3, 2010 at 6:04 PM, David Dearing dpdear...@gmail.com wrote:
I'm new to Lift and am trying to use Lift within a subpath of my web
application. For example, http://domain.com is an existing webapp,
but my LiftFilter handles the user_mgt subpath (http://domain.com/
user_mgt/* http://domain.com/%0Auser_mgt/*). My existing webapp already
handles user authentication,
but I want to use the lost/change password functionality of Lift's
MegaProtoUser.
How do I create a LiftSession from my existing webapp so that I can
call User.logUserIn(my_user)?
I am embedding my User.logUserIn call within S.initIfUninitted like
this:
S.initIfUninitted(my_lift_session.openOr(** SOMETHING? **))
{
User.logUserIn(user)
}
If a LiftSession exists, I can retrieve it and it works fine:
val my_lift_session = SessionMaster.getSession(current_session_id,
Empty)
However, when my_lift_session is Empty, I have tried:
LiftRules.sessionCreator(new
provider.servlet.HTTPServletSession(current_session), ))
which appears to create a new LiftSession, but when I actually
navigate to a page in the subpath
http://domain.com/user_mgt/change_password
it doesn't recognize that I've logged in. Perhaps when I load the
page http://domain.com/user_mgt/change_password it is creating a new
LiftSession even though one already exists?
I've been banging my head on this for a while.
Any help would be greatly appreciated!
dave
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[Lift] JSON help...
Folks,
I'm working on parsing through some JSON that's posted/put as part of a
request. I'd like to find the messageId field and only get it if its type
is JInt. I'm doing this within a for comprehension that has a Box at the
top of it, so the resulting expression must play well with Box. What I've
got is:
for {
user - WorkerMgr.find(UserId(user)) ?~ User not found
json - r.json
(_, messageJson) - (json \ classOf[JField]).find(_._1 ==
messageId)
messageId - Box.asA[JInt](messageJson)
(_, timemillisJson) - (json \ classOf[JField]).find(_._1 ==
timestamp)
timemillis - Box.asA[JInt](timemillisJson)
} yield ...
The lines that look for messageId and timestamp and insure they are JInts
are kinda verbose. Is there a better way to do what I'm trying to do?
Thanks,
David
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Re: [Lift] Re: SQL error
On Thu, Mar 4, 2010 at 1:10 PM, Mads Hartmann Jensen mads...@gmail.comwrote:
This has already been on reviewboard and comitted to master - should i send
out a breaking change note?
Yeah. Send out a breaking change note. The likelihood of breakage is low,
but possible.
I'm not sure i get why this is a breaking change though?
On 04/03/2010, at 22.07, Jim Barrows wrote:
On Thu, Mar 4, 2010 at 1:47 PM, Naftoli Gugenheim naftoli...@gmail.comwrote:
Is blob a standard reserved word or only on MySQL?
If the latter this is a potential breaking change.
Blob is not apparently part of the ANSI standard reserved word for SQL. I
would have sworn it was. However, it is common in Oracle, MS SQL server
and others. Might as well be standard.
-
Mads Hartmannmads...@gmail.com wrote:
Ah! That fixed it, thanks a lot Jeppe ;)
I'm not sure what to say in the ticket though, the column-name blob
was a bad choise made by me.
On Mar 4, 1:32 pm, Jeppe Nejsum Madsen je...@ingolfs.dk wrote:
On Thu, Mar 4, 2010 at 1:25 PM, Mads Hartmann mads...@gmail.com
wrote:
Hello everyone,
I'm not sure if this is a lift problem or it's me. I'm trying to add
the ability to upload images to a project - I'm using the code
explained here:
http://groups.google.com/group/liftweb/browse_thread/thread/b0509263e.
..
I added two mapper classes:
---
class ImageInfo extends LongKeyedMapper[ImageInfo] with IdPK {
def getSingleton = ImageInfo
object date extends MappedLong(this) {
override def defaultValue = Helpers.millis
}
object mimeType extends MappedPoliteString(this, 64)
object name extends MappedPoliteString(this, 256) {
override def dbIndexed_? = true
override def defaultValue =
private def noSlashes(s: String) : List[FieldError] =
if (s.contains(/))
List(FieldError(this, Text(Image name
\ + s + \ may not
contain \/\)))
else
Nil
override def validations =
valMinLen(1, Image name must not be empty) _ ::
valUnique(Image name must be unique) _ ::
noSlashes _ ::
super.validations
}
object blob extends MappedLongForeignKey(this, ImageBlob)
def deleteWithBlob {
this.blob.obj match {
case Full(x) = x.delete_!
case _ =
}
this.delete_!
}
}
-
and
--
class ImageBlob extends LongKeyedMapper[ImageBlob] with IdPK {
def getSingleton = ImageBlob
object image extends MappedBinary(this)
}
-
The schemifier couldn't create the tables it gave to following
error ::
You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use
near 'blob BIGINT UNSIGNED) ENGINE = InnoDB' at line 1
this is the sql statement it tried to execute
CREATE TABLE imageinfo (name VARCHAR(256) , id BIGINT UNSIGNED NOT
NULL AUTO_INCREMENT UNIQUE KEY , date_c BIGINT , mimetype
VARCHAR(64) , blob BIGINT UNSIGNED) ENGINE = InnoDB
I looks like it tries to create a column named blob, afaiks blob is a
reserved word in MySqlhttp://
dev.mysql.com/doc/refman/5.0/en/reserved-words.html
You could try renaming the field. If this solves the problem, please
file a ticket
/Jeppe
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Re: [Lift] Re: JSON help...
On Thu, Mar 4, 2010 at 12:52 PM, Joni Freeman freeman.j...@gmail.comwrote:
Tried it myself and that version does not work. You probably need
nested for-comprehension which parses the JSON:
I added:
implicit def iterableToBox[X](in: Iterable[X]): Box[X] = in.headOption
And it makes things hunky dory.
Thanks for your help!
for {
user - WorkerMgr.find(UserId(user)) ?~ User not found
json - r.json
data - Box(for {
JField(messageId, JInt(messageId)) - json
JField(timestamp, JInt(timemillis)) - json
} yield (messageId, timemillis))
} yield ...
Cheers Joni
On Mar 4, 9:55 pm, Joni Freeman freeman.j...@gmail.com wrote:
Hi David,
Does this work?
for {
user - WorkerMgr.find(UserId(user)) ?~ User not found
json - r.json
JField(messageId, JInt(messageId)) - json
JField(timestamp, JInt(timemillis)) - json
} yield ..
Cheers Joni
On Mar 4, 9:28 pm, David Pollak feeder.of.the.be...@gmail.com wrote:
Folks,
I'm working on parsing through some JSON that's posted/put as part of a
request. I'd like to find the messageId field and only get it if its
type
is JInt. I'm doing this within a for comprehension that has a Box at
the
top of it, so the resulting expression must play well with Box. What
I've
got is:
for {
user - WorkerMgr.find(UserId(user)) ?~ User not found
json - r.json
(_, messageJson) - (json \ classOf[JField]).find(_._1 ==
messageId)
messageId - Box.asA[JInt](messageJson)
(_, timemillisJson) - (json \ classOf[JField]).find(_._1 ==
timestamp)
timemillis - Box.asA[JInt](timemillisJson)
} yield ...
The lines that look for messageId and timestamp and insure they are
JInts
are kinda verbose. Is there a better way to do what I'm trying to do?
Thanks,
David
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Re: [Lift] Resuming a Statefull Snippet.
On Thu, Mar 4, 2010 at 2:00 PM, andythedestroyer andythedestro...@gmail.com
wrote:
Hello,
I have a simple use case where there is a 2 page form wizard then a
redirect to a third party ( for some external validation ) which
redirects back to a third and final page of the wizard.
I know I could just use snippets and SessionVars to manage this but I
have been using StatefullSnippets and would like to try to solve this
problem rather than accept failure and use another method.
I pass the url for the third page to the third party to redirect to
when their work is done. The problem is the snippet state is lost
after the redirect. I have tried many different things and it seems
like something like this should work.
// in the processing done before redirect to third party.
// assemble the return path url.
class Wizard extends StatefulSnippet with Logger {
def doRedirect = {
val returnPath = urlEncode(S.hostAndPath + ( link(/lastPage, () =
redirectTo(/lastPage), NodeSeq.Empty) \ @href).text)
redirectTo( third_party_url +?return= + returnPath)
}
}
Try:
def doRedirect {
val tmp = Helpers.randomString(20)
S.addHighLevelSessionDispatcher(wizard, {
case Req(List(tmp), _, _) = () = {
S.removeHighLevelSessionDispatcher(wizard)
redirectTo(/lastPage)
}
}
val returnPath= urlEncode(S.hostAndPath + tmp)
S.redirectTo(third_party_url+?return= + returnPath)
}
The high level session dispatcher was built for this very reason... further,
the return URL is random and only associated with the current session so it
makes hijacking any information or redirecting other sessions back to the
URL a non-issue.
Thanks,
David
This does generate a return path like http://localhost:8080/lastPage?
F1151306194165AHF=_ , however all state is gone after the third party
redirects back to the site, however if I don't redirect to the third
party and instead redirect the val returnPath I construct directly,
state is maintained.
Is it possible to resume my StatefulSnippet? Or shall I just use
something else?
Thanks to all who read and or respond.
-Andy
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Re: [Lift] Re: Resuming a Statefull Snippet.
On Thu, Mar 4, 2010 at 4:26 PM, andythedestroyer andythedestro...@gmail.com
wrote:
Ok Wow. Sometimes you really impress me dpp. That worked. I don't
think I ever would have figured that out but now that I see it I see
what is going on. I have never used HighLevelSessionDispatcher before
though.. I need to go though the code and learn that one.
Nobody but me (and now you) that I know of ever used
highLevelSessionDispatch.
I added the feature when we were working on some code back in the
CircleShare day that had to go out to an external service and then have a
return URL which contained state. Being able to define a throw-away URL was
the best answer.
Please add this to the wiki.
Good stuff. Thanks again you smart smart man.
blush/
-Andy
On Mar 4, 3:56 pm, David Pollak feeder.of.the.be...@gmail.com wrote:
On Thu, Mar 4, 2010 at 2:00 PM, andythedestroyer
andythedestro...@gmail.com
wrote:
Hello,
I have a simple use case where there is a 2 page form wizard then a
redirect to a third party ( for some external validation ) which
redirects back to a third and final page of the wizard.
I know I could just use snippets and SessionVars to manage this but I
have been using StatefullSnippets and would like to try to solve this
problem rather than accept failure and use another method.
I pass the url for the third page to the third party to redirect to
when their work is done. The problem is the snippet state is lost
after the redirect. I have tried many different things and it seems
like something like this should work.
// in the processing done before redirect to third party.
// assemble the return path url.
class Wizard extends StatefulSnippet with Logger {
def doRedirect = {
val returnPath = urlEncode(S.hostAndPath + ( link(/lastPage, () =
redirectTo(/lastPage), NodeSeq.Empty) \ @href).text)
redirectTo( third_party_url +?return= + returnPath)
}
}
Try:
def doRedirect {
val tmp = Helpers.randomString(20)
S.addHighLevelSessionDispatcher(wizard, {
case Req(List(tmp), _, _) = () = {
S.removeHighLevelSessionDispatcher(wizard)
redirectTo(/lastPage)
}
}
val returnPath= urlEncode(S.hostAndPath + tmp)
S.redirectTo(third_party_url+?return= + returnPath)
}
The high level session dispatcher was built for this very reason...
further,
the return URL is random and only associated with the current session so
it
makes hijacking any information or redirecting other sessions back to the
URL a non-issue.
Thanks,
David
This does generate a return path like http://localhost:8080/lastPage?
F1151306194165AHF=_ , however all state is gone after the third party
redirects back to the site, however if I don't redirect to the third
party and instead redirect the val returnPath I construct directly,
state is maintained.
Is it possible to resume my StatefulSnippet? Or shall I just use
something else?
Thanks to all who read and or respond.
-Andy
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Re: [Lift] Re: Lift security vulnerability
On Thu, Mar 4, 2010 at 4:33 PM, Dano olearydani...@gmail.com wrote: Just saw that Lift 2.0-M3 was released. I looked to see if the vulnerability was still present in demo.liftweb.net And the astute and not-so-astute observer will note at the bottom of each page on demo.liftweb.net: Lift version 1.1-SNAPSHOT built on Tue Nov 24 13:58:20 PST 2009. If you have a reproducible case (running against Lift 2.0-M3 or 2.0-SNAPSHOT) of the security vulnerability, you are welcome to submit it as a ticket. and I am still able to generate exceptions in the browser when I paste binary characters in the textfields for the Wizard, Wizard Challenge, and Arc Challenge examples in the Misc section. Don't know if this remaining problem is supposed to be handled by the application or framework, but thought I would make a post to alert the group. Dan On Feb 24, 11:49 am, Dano olearydani...@gmail.com wrote: The recent scala days conference activity may have cause the updates to this thread to escape notice. Just wondering if there is concern about the remaining binary character problems I noted in my prior post. Thanks in advance. Dan On Feb 22, 1:34 pm, Dano olearydani...@gmail.com wrote: More information on this in case anyone is interested. If you go to theliftdemo website, it appears the issue with characters is mostly addressed except for the Misc code section. Specifically, the Wizard, Wizard Challenge and Arc Challenge #1 examples will generate XML parsing errors. For these problems, I am not sure if the issue if the example or the framework. If the issue is with the example, it would be good to know whatLiftapps need to do to avoid getting bitten by binary characters entered into form fields. Thanks in advance. Dan On Feb 17, 11:06 am, Dano olearydani...@gmail.com wrote: Hello, I was wondering if the fix for the control characters issue was included in 2.0-M2. I just did a test with ourLiftapplication built with 2.0-M2 and I am still seeing problems (i.e. javascript exceptions - NS_ERROR_INVALID_POINTER). Thanks in advance. Dan On Feb 3, 9:08 am, David Pollak feeder.of.the.be...@gmail.com wrote: Thanks for pointing that out. There are other problems as well... I'll fix them (in both the Scala andLiftdiffs) On Wed, Feb 3, 2010 at 7:39 AM, Feng Zhang sharpzh...@gmail.com wrote: I found that in the fix, \n is changed to \t, while \t to \n. Is this desired behavior? Thank you, Feng On Wed, Feb 3, 2010 at 9:20 AM, Indrajit Raychaudhuri indraj...@gmail.com wrote: 1. Fix in head/master (2.0-SNAPSHOT) and prepone 2.0-M2. 2. Backport in 1.0.x branch and spin 1.0.4. We haven't marked 1.0.x 'unsupported' yet. Forcing apps to move to 2.0-M2 just for this vulnerability fix isn't fun. Cheers, Indrajit On 03/02/10 3:34 PM, Timothy Perrett wrote: +1 Fix it in head, no need to back-port; M2 is only around the corner. Cheers, Tim On 3 Feb 2010, at 09:49, Jeppe Nejsum Madsen wrote: David Pollakfeeder.of.the.be...@gmail.com writes: I'd like to get a sense of how important the community views this defect. Is it a backport the fix to every milestone and release yesterday or is it a fix it in 2.0-M2 or someplace in between. For me, it's fix it in 2.0-SNAPSHOT /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to liftweb@googlegroups.com . To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com liftweb%2bunsubscr...@googlegroups.comliftweb%252bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com liftweb%2bunsubscr...@googlegroups.comliftweb%252bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com liftweb%2bunsubscr...@googlegroups.comliftweb%252bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com
Re: [Lift] Snippets in subpackages?
On Tue, Mar 2, 2010 at 11:42 PM, Heiko Seeberger heiko.seeber...@googlemail.com wrote: On 3 March 2010 00:03, David Pollak feeder.of.the.be...@gmail.com wrote: On Tue, Mar 2, 2010 at 1:05 PM, Heiko Seeberger heiko.seeber...@googlemail.com wrote: Hi, Isn't it possible to put snippets in subpackages of xxx.snippet? Something like lift:snippet type=com.acme.snippet.subpackage.SnippetClass? If not, what's the best way to deal with a large number of snippets? Explicitly registering the snippet dispatch in LiftRules is the way I'd recommend doing it. If this is less than 100% optimal for your use case, let's learn more about your use case and see if we have to expand how Snippets are looked up. Well, registering quite a lot of snippets is indeed less than 100% optimal. OK, I have got a not-so-small website with about 100 templates and snippets. The templates are organized as a tree, e.g. /login/signup/seeker, /login/signup/offerer, etc. There is not a perfect 1:1 relationship between templates and snippets, but for sake of simplicity let's assume so. Hence I would like to organize my snippets in packages according to the templates, e.g. ...snippet.login.signup.Seeker, ...snippet.login.signup.Offerer, etc. One of the things I do with page-specific snippets is call them out in SiteMap: Loc(..., Snippet(foo, snipetFunc)) But it might also be interesting to explore a model like Wickets: foo/bar/page.html - look in snippets.foo.bar in addition to the normal snippets package... would that help? Thank you, Heiko Company: weiglewilczek.com Blog: heikoseeberger.name Follow me: twitter.com/hseeberger OSGi on Scala: scalamodules.org Lift, the simply functional web framework: liftweb.net -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Transactions with Mapper
On Tue, Mar 2, 2010 at 5:53 AM, Timothy Perrett timo...@getintheloop.euwrote:
Probally worth sticking this on the wiki
Cheers, Tim
Sent from my iPhone
Wait... you've got a broken hand and you can still type on your iPhone?!?!
:-)
On 2 Mar 2010, at 14:37, Jeppe Nejsum Madsen je...@ingolfs.dk wrote:
ced docpom...@googlemail.com writes:
When I use Mapper outside a request, say in an actor, how do I wrap it
in a transaction? I know that I do a S.addAround(DB.buildLoanWrapper)
to have transactions within a request.
Can anyone provide a simple code snippet?
You can use use :-)
DB.use(DefaultConnectionIdenfifier) {connection =
User.findAll
}
/Jeppe
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Re: [Lift] Snippets in subpackages?
On Wed, Mar 3, 2010 at 8:27 AM, Ross Mellgren dri...@gmail.com wrote: On Mar 3, 2010, at 11:25 AM, David Pollak wrote: On Tue, Mar 2, 2010 at 11:42 PM, Heiko Seeberger heiko.seeber...@googlemail.com wrote: On 3 March 2010 00:03, David Pollak feeder.of.the.be...@gmail.comwrote: On Tue, Mar 2, 2010 at 1:05 PM, Heiko Seeberger heiko.seeber...@googlemail.com wrote: Hi, Isn't it possible to put snippets in subpackages of xxx.snippet? Something like lift:snippet type=com.acme.snippet.subpackage.SnippetClass? If not, what's the best way to deal with a large number of snippets? Explicitly registering the snippet dispatch in LiftRules is the way I'd recommend doing it. If this is less than 100% optimal for your use case, let's learn more about your use case and see if we have to expand how Snippets are looked up. Well, registering quite a lot of snippets is indeed less than 100% optimal. OK, I have got a not-so-small website with about 100 templates and snippets. The templates are organized as a tree, e.g. /login/signup/seeker, /login/signup/offerer, etc. There is not a perfect 1:1 relationship between templates and snippets, but for sake of simplicity let's assume so. Hence I would like to organize my snippets in packages according to the templates, e.g. ...snippet.login.signup.Seeker, ...snippet.login.signup.Offerer, etc. One of the things I do with page-specific snippets is call them out in SiteMap: Loc(..., Snippet(foo, snipetFunc)) But it might also be interesting to explore a model like Wickets: foo/bar/page.html - look in snippets.foo.bar in addition to the normal snippets package... would that help? I have wanted this for a while, I think it would be great. Does that mean you just signed up to write it? ;-) -Ross -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: Snippets in subpackages?
On Wed, Mar 3, 2010 at 9:30 AM, Heiko Seeberger heiko.seeber...@googlemail.com wrote: Yep, that would help a lot! Cool. Please open a ticket and assign it to Ross... if he wants, he can assign it to me or you. ;-) Heiko On Wednesday, March 3, 2010, David Pollak feeder.of.the.be...@gmail.com wrote: On Tue, Mar 2, 2010 at 11:42 PM, Heiko Seeberger heiko.seeber...@googlemail.com wrote: On 3 March 2010 00:03, David Pollak feeder.of.the.be...@gmail.com wrote: On Tue, Mar 2, 2010 at 1:05 PM, Heiko Seeberger heiko.seeber...@googlemail.com wrote: Hi, Isn't it possible to put snippets in subpackages of xxx.snippet?Something like lift:snippet type=com.acme.snippet.subpackage.SnippetClass? If not, what's the best way to deal with a large number of snippets? Explicitly registering the snippet dispatch in LiftRules is the way I'd recommend doing it. If this is less than 100% optimal for your use case, let's learn more about your use case and see if we have to expand how Snippets are looked up. Well, registering quite a lot of snippets is indeed less than 100% optimal. OK, I have got a not-so-small website with about 100 templates and snippets. The templates are organized as a tree, e.g. /login/signup/seeker, /login/signup/offerer, etc. There is not a perfect 1:1 relationship between templates and snippets, but for sake of simplicity let's assume so. Hence I would like to organize my snippets in packages according to the templates, e.g. ...snippet.login.signup.Seeker, ...snippet.login.signup.Offerer, etc. One of the things I do with page-specific snippets is call them out in SiteMap: Loc(..., Snippet(foo, snipetFunc)) But it might also be interesting to explore a model like Wickets: foo/bar/page.html - look in snippets.foo.bar in addition to the normal snippets package... would that help? Thank you, Heiko Company: weiglewilczek.com Blog: heikoseeberger.name Follow me: twitter.com/hseeberger OSGi on Scala: scalamodules.org Lift, the simply functional web framework: liftweb.net -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Heiko Seeberger Company: weiglewilczek.com Blog: heikoseeberger.name Follow me: twitter.com/hseeberger OSGi on Scala: scalamodules.org Lift, the simply functional web framework: liftweb.net -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: Snippets in subpackages?
On Wed, Mar 3, 2010 at 10:08 AM, Ross Mellgren dri...@gmail.com wrote: Haha okay okay I'll write it, but *you* have to review it ;-) Will do. -Ross On Mar 3, 2010, at 12:37 PM, David Pollak wrote: On Wed, Mar 3, 2010 at 9:30 AM, Heiko Seeberger heiko.seeber...@googlemail.com wrote: Yep, that would help a lot! Cool. Please open a ticket and assign it to Ross... if he wants, he can assign it to me or you. ;-) Heiko On Wednesday, March 3, 2010, David Pollak feeder.of.the.be...@gmail.com wrote: On Tue, Mar 2, 2010 at 11:42 PM, Heiko Seeberger heiko.seeber...@googlemail.com wrote: On 3 March 2010 00:03, David Pollak feeder.of.the.be...@gmail.com wrote: On Tue, Mar 2, 2010 at 1:05 PM, Heiko Seeberger heiko.seeber...@googlemail.com wrote: Hi, Isn't it possible to put snippets in subpackages of xxx.snippet?Something like lift:snippet type=com.acme.snippet.subpackage.SnippetClass? If not, what's the best way to deal with a large number of snippets? Explicitly registering the snippet dispatch in LiftRules is the way I'd recommend doing it. If this is less than 100% optimal for your use case, let's learn more about your use case and see if we have to expand how Snippets are looked up. Well, registering quite a lot of snippets is indeed less than 100% optimal. OK, I have got a not-so-small website with about 100 templates and snippets. The templates are organized as a tree, e.g. /login/signup/seeker, /login/signup/offerer, etc. There is not a perfect 1:1 relationship between templates and snippets, but for sake of simplicity let's assume so. Hence I would like to organize my snippets in packages according to the templates, e.g. ...snippet.login.signup.Seeker, ...snippet.login.signup.Offerer, etc. One of the things I do with page-specific snippets is call them out in SiteMap: Loc(..., Snippet(foo, snipetFunc)) But it might also be interesting to explore a model like Wickets: foo/bar/page.html - look in snippets.foo.bar in addition to the normal snippets package... would that help? Thank you, Heiko Company: weiglewilczek.com Blog: heikoseeberger.name Follow me: twitter.com/hseeberger OSGi on Scala: scalamodules.org Lift, the simply functional web framework: liftweb.net -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Heiko Seeberger Company: weiglewilczek.com Blog: heikoseeberger.name Follow me: twitter.com/hseeberger OSGi on Scala: scalamodules.org Lift, the simply functional web framework: liftweb.net -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group
Re: [Lift] ParamFailure : why a subtype ?
The short answer is that sometimes inheritance is better than a flat ADT.
A Box can be full or empty: Full or EmptyBox
An empty box can contain no additional information as to why it's empty (the
Empty singleton) or it can contain more information as to why the Box is
empty: Failure. Now, a Failure could have subclasses such as Failure with
exception and chained Failure, but it seemed to me that there would be an
explosion of subclasses, so I just chose Failure with the various
parameters.
Then someone pointed out that it'd be nice to carry around an HTTP response
code or other data about the Failure which led to ParamFailure. Because
ParamFailure is a subclass of Failure, you can pattern match on Failure and
it will catch ParamFailure, but you lose the information about the parameter
(just like you can match against EmptyBox if you don't care why the Box is
empty)
The code:
implicit def handleFailure[T](value: Box[T])(implicit cvt: T =
LiftResponse): Box[LiftResponse] = {
value match {
case ParamFailure(msg, _, _, code: Int) =
Full(InMemoryResponse(msg.getBytes(UTF-8), (Content-Type -
text/plain; charset=utf-8) :: Nil, Nil, code))
case Failure(msg, _, _) = Full(NotFoundResponse(msg))
case Empty = Empty
case Full(x) = Full(cvt(x))
}
}
Gives you a good indication of how various subclasses of Box can work
together to give you a nice way to write REST calls.
On Wed, Mar 3, 2010 at 3:42 PM, Francois fan...@gmail.com wrote:
Hello,
I really like the use of Box (perhaps one of the best thing in lift :),
safe for how it handles ParamFailure - so I'm wondering why ParamFailure is
a subclass of Failure, and not a full case of Box ? Or why Failure does not
have (always) an option param, like its option exception/chain ?
Thanks,
PS: if the answer was already given, I'm sorry, I didn't find it in ml
archive
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[Lift] Re: [Lift Announce] Lift Web Framework 2.0 Milestone 3 released
Awesome work team! A special thanks to Charles and Indrajit for spinning the build! On Wed, Mar 3, 2010 at 8:10 PM, Indrajit Raychaudhuri indraj...@gmail.comwrote: The Lift Web Framework team is pleased to announce the framework-2.0- M3 release! Lift is an expressive and elegant framework for writing web applications. Lift stresses the importance of security, maintainability, scalability and performance while allowing for high levels of developer productivity. Lift is a Scala web framework. NOTE: The potential *breaking changes* have been specifically marked for your reference. Please take a look at the specific issue at http://www.assembla.com/spaces/liftweb/tickets and the Lift announcement list for further details. Changes in this version include: New features: o A flag for disabling the onblur stuff for ajax calls Issue: 117. o Added toHtml method to Mapper/MetaMapper Issue: 350. o Added support for area tags Issue: 70. o Added NOT IN to Mapper query builder Issue: 353. o Enhancements to LiftActors and LRU to support Goat Rodeo Issue: 335. o ByList is uniqued before the query is built Issue: 298. o Added linkToSelf option to Menu.build snippet Issue: 343. o xxxMenuLoc methods now delegate to protected xxxMenuLocParams methods in order to get their LocParams. Issue: 251. o Extend Comet (ListenerManager) to selectively update subscribers Issue: 326. o Add DataBinding types and traits to lift-webkit Issue: 212. o Add CouchDB support (lift-couchdb) Issue: 306. o Integrate Image manipulation code to lift Issue: 285. o Add support to extract primitive values from JSON Issue: 360. o ItemsListEditor (and thus TableEditor) should warn when leaving page with unsaved changes Issue: 339. o ItemsListEditor should display items pending removal, albeit in strikeout font Issue: 302. o ItemsList.save unremoves removed unsaved items Issue: 300. o ItemsList should be have refresh method to clear added/removed without requerying database Issue: 299. o ItemsListEditor should allow custom columns Issue: 301. o ItemsListEditor should catch SQLException in ItemsList.save Issue: 340. Fixed Bugs: o Fixed a stack overflow on non-tail recursive method Issue: 393. o Allow Foreign Key support to be optional in PostgreSQL driver Issue: 387. o Scope attributes duplicated in certain cases. Fixed those cases. Issue: 373. o Better support for exceptions in DB Logging Issue: 369. o Further work to make sure control characters don't show up in XML output. Issue: 319. o Fix runtime errors in a couple of example programs Issue: 342. o Issues with template cache updating incorrectly Issue: 367. o Fixed a comparison bug in ReplaceOption (wishing for type-safety in ==) Issue: 296. o Support for Scala 2.8 deltas in the way Nodes are compared Issue: 357. o 304 responses should not include Content-Type headers Issue: 239. o Fixed misspelled keys for resource bundles: *pasword* and reset.password.confirmarion Issue: 112. o Optional fields in JSONRecord do not work without setting needAllJSONFields to false Issue: 359. o JSON deserialization fails for null value Issue: 358. o Type hints are needed in JSON serialization for non-polymorphic Map Issue: 341. o Do not serialize the internal state of a case class (JSON) Issue: 352. o Forcing Authentication not working Issue: 337. o Autocomplete never submit value Issue: 27. o Javascript DSL inconsistencies Issue: 287. o Solve CSS/JS unwanted caching Issue: 346. Changes: o Support for enhancing foreign key references in PostgreSQL 8.3+ Issue: 224. o Have minimal support for archetype:create telling user to use archetype:generate instead Issue: 238. o Internationalizing missing strings in ProtoUser Issue: 320. Thanks to Adam Warski. o Enforce Maven version 2.2.1 or higher, but lower than 3.0. Issue: 344. o lift-flot has been updated to Flot 0.6 Issue: 322. o Make OpenID support more extensible Issue: 329. o [BREAKING CHANGE] Lift Mapper (Record) camelCase to snake_case for case insensitive databases Issue: 155. o [BREAKING CHANGE] Improved logging facilities Issue: 309. o Deprecate old logging code Issue: 374. o Enhance Facebook Connect utilities and example code Issue: 336. o Add ability to use doc result of query, not just value Issue: 356. o [BREAKING CHANGE] Add Optional variants of the basic record fields Issue: 305. o Update lift-couchdb to use dispatch 0.7.1 once released Issue: 351. o [BREAKING CHANGE] LiftRules.jQueryVersion should not be there. Issue: 363. Have fun! -Lift Web Framework team -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this
Re: [Lift] reload application.properties
On Tue, Mar 2, 2010 at 12:48 AM, Jeppe Nejsum Madsen je...@ingolfs.dkwrote: David Pollak feeder.of.the.be...@gmail.com writes: [...] 1) Change the menu structure? Restart server Yes. This is a problem. 2) Change the menu text? Restart server (yes I use properties for text and yes I need an app in different languages, see other thread :-) This is a problem as well. 3) Change something in a mapped field? Restart server This is unavoidable. If the model changes, you have to re-sync to the RDBMS and this requires a restart. In practice, how often do you change your model? Depends on what you mean by model. If you mean adding/changing fields at the db level, requiring restart is not a big problem. But when using mapper, this is not the only thing that lives in the model. Hiding showing fields, render format, the validations etc. I just tried again, and some stuff does seem to be working. It may have been a JRebel issue. I'll try to keep an eye on this and see if there are some specific things that doesn't change dynamically. 4) Change a field label? Restart server With JRebel, the change to a field label should be reflected immediately. I swear I tried this before writing :-) But you're right, it does seem to work (unless you get the label from properties :-) [...] It would be really nice for some of this to be picked up automatically when running in development mode. I still remember some time ago when I did a project in PHP. I don't like the PHP language very much, but you can't really beat the instant gratification of a code change: Just reload the page! The problem is two-fold: (1) Lift is stateful and trying to morph the state based on change to logic is non-trivial and (2) the amount of logic you can get into a line of PHP vs. a line of Scala is 2-3 orders of magnitude different. Agreed, and I'm not looking to get a seamless incorporation of dynamic changes. But not having to do the restart/relogin cycle in the most frequent scenarios would be nice. I think some of these issues could be solved easily, some will require more work and some may be impossible. - Reloading properties if the file has changed should be easy. What do you keep in your properties file? I keep database connection info and service endpoints (e.g., Amazon S3 urls and passwords). Changing this stuff should require an app restart. Agreed. What do you keep in your properties files that can change at runtime? Translated strings. You keep your translated strings in the files accessed by net.liftweb.util.Props? I haven't done any Lift localization, but I think that's the wrong place for them. If the current implementation of the localization stuff isn't reloading the localization files on change during dev mode, that's a defect (or an enhancement) and deserves a ticket. - Rebooting lift on the fly may not be easy, but perhaps some things could be made reloadable (sitemap?). If you then write a JRebel plugin (not a hard task) that triggers the reload when a class change is detected, you will be one step closer to RAD nirvana. SiteMap is an easy case. If you'd be so kind as to open a ticket and assign it to me, I'll make SiteMap morphable in development mode. That would be awesome! https://www.assembla.com/spaces/liftweb/tickets/385-make-sitemap-dynamic-when-running-in-development-mode How do you envision this working? Just calling Boot again from a JRebel plugin? I'm not going to call Boot again, but I have a bunch of ideas of an efficient mechanism for recalculating stuff on a request-by-request basis in dev mode, but only once in production mode. What other things need changing? Maybe the LiftRules stuff can be more dynamic at runtime. Not sure. SiteMap is the main culprit imo. I'll try to keep an eye out for others /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: Transactions with Mapper
On Tue, Mar 2, 2010 at 7:03 AM, ced docpom...@googlemail.com wrote:
Another question: Is it possible to nest DB.use? I'd like to have the
same behavior as with the @Transaction annotation from Spring.
DB.use nests. Only when the last DB.use is exited does the transaction
commit. I don't know how Spring does stuff.
On 2 Mrz., 14:55, ced docpom...@googlemail.com wrote:
Ah great! Thanks!
- Chris
On Mar 2, 2:37 pm, Jeppe Nejsum Madsen je...@ingolfs.dk wrote:
ced docpom...@googlemail.com writes:
When I use Mapper outside a request, say in an actor, how do I wrap
it
in a transaction? I know that I do a S.addAround(DB.buildLoanWrapper)
to have transactions within a request.
Can anyone provide a simple code snippet?
You can use use :-)
DB.use(DefaultConnectionIdenfifier) {connection =
User.findAll
}
/Jeppe
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Re: [Lift] Re: Is CometActor the right tool for this job?
On Tue, Mar 2, 2010 at 6:09 AM, ced docpom...@googlemail.com wrote:
I have a similar use case and from my experience using a CometActor is
just great for this.
1) I assume each page get their own instance of the actor so they can
hold their own data. Is this correct?
Yes.
No, it's not correct. There's one CometActor of a given type/name per
session.
2) When is a CometActor shutdown? Sometime after the user navigates
away from page?
CometActors have a time to live. Override
override def lifespan: Box[TimeSpan] = Full(2 minutes)
in your implementation and when the actor doesn't get queried for that
amount of time it receives a shutdown.
3) How do I get access to the CometActor instance on the page? I need
to send a message to it from a function bound to e.g. an ajaxSelect
You need another Actor that dispatches messages to your CometActors.
This is not correct. If you create an ajax component from within the scope
of the CometActor (in the CometActor's render method), any of the
CometActor's methods can be called and you can also manipulate private data
during the Ajax call. Why? Because Lift ensures that if the function was
created within the scope of the CometActor that it will always be evaluated
via a message passed to the CometActor.
Say you have ChartCometActor, then implement something like
object ChartManager extends Actor {
...
}
where all your CharCometActors register at creation time. Override
localSetup() for this. Also override localShutdown() to unregister.
Your snippet function then sends a message to the ChartManager who's
responsible for dispatching to all/one actor/s. I use a solution where
I register the CometActors an a session basis, so I can send a message
either to all or just one CometActor.
I have some code available that eases the registration/deregistration
and the sending of messages on a per-session basis.
Hope that helps,
-Chris
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Re: [Lift] Is CometActor the right tool for this job?
On Tue, Mar 2, 2010 at 5:55 AM, Jeppe Nejsum Madsen je...@ingolfs.dkwrote: Hi, I haven't used Lift's comet support at all, but now it seems like a use case has popped up. I can do this with POA (Plain Ol Ajax), but, at least for me, it looks like CometActor might be a better fit. The use case is this: We need to show a page containing a chart and some tables with data. The user should be able to filter, group, select new axis values etc in the page and the chart/table should be updated. All the views use the same underlying data, which will take some time (5-10s) to pull up initially. Changing views after initial load will reuse the data. Unless you're going to update the graph synchronously, the comet solution is not the best. A graph with ajax/json elements that update the graph and send back new data to chart would be my choice. So I was thinking to have a CometActor that holds the data and can render the specified view. The UI will send view messages that tell how to slice the data. The benefits from the actor solution as I see it are: 1) Can load initial data asynchronously 2) Can hold on to the data while the user is on the page 3) Page update is asynchronously, so the UI is perceived as faster Are these assessments correct? Or is this overkill? A few questions: 1) I assume each page get their own instance of the actor so they can hold their own data. Is this correct? 2) When is a CometActor shutdown? Sometime after the user navigates away from page? 3) How do I get access to the CometActor instance on the page? I need to send a message to it from a function bound to e.g. an ajaxSelect /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: First comet steps
On Tue, Mar 2, 2010 at 8:03 AM, Nolan Darilek no...@thewordnerd.infowrote:
Just wondering if anyone had any thoughts on this?
I still can't bind fields in an embedded template. They're returned as is,
not transformed. Not sure what I'm doing wrong.
If you put up a runable Maven project on GitHub, I'll fix the code to make
it work for you.
On 02/23/2010 11:33 AM, Nolan Darilek wrote:
Cool, thanks for all your help here. It's been quite a bit to digest, and
I finally got around to revisiting this problem today.
So I'm not sure why my initial attempts to return a lift:embed from the
render method failed, but today that seems to work. Need to see if Firefox
is doing anything odd with caching, because I seem to have lots of odd
problems of this sort. In the meantime, I'll poke at things with Curl before
claiming that they don't work.
I'm trying to create a cleaner design based on returning lift:embed, but
I'm still having problems, even after Curl. :) Here's what I have thus far.
My status.html:
lift:surround with=default at=content
h2Imports/h2
lift:comet type=ImportMonitor/
/lift:surround
templateshidden/importing.html, returned by comet render:
table
tr
thName/ththComplete/ththTotal/ththStatus/th
/tr
tr
tdimport:name//td
/tr
/table
And part of my ImportMonitor code:
class ImportMonitor extends CometActor {
...
def render = {
if(importsCount == 0)
pNo imports are currently in progress./p
else {
bind(import, lift:embed what=importing/,
name - Name
)
}
}
...
}
I've tried a variety of things at that bind call. What it ultimately does
is returns my template as is, including the import:name/import:name. I
also tried eager_eval=true on the embed element, but with no luck.
Thoughts on what I'm missing? I feel like binding keeps tripping me up. I
understand the concept, in essence, but it seems like this should work to me
and I don't see why it isn't.
Thanks for being such a newbie-friendly community.
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Re: [Lift] MapperRules.nameToDisplayName?
On Tue, Mar 2, 2010 at 12:27 AM, Jeppe Nejsum Madsen je...@ingolfs.dkwrote:
David Pollak feeder.of.the.be...@gmail.com writes:
If the mechanism was something more along the lines of:
display name calculator: (Mapper[_], Locale, String) = Box[String] // we
could use Lift's factory mechanism here
I'm completely blank as to the factory mechanism, but this might be a
good excuse to get started :-) Do you mean something like this in
MapperRules:
val displayNameCalculator: FactoryMaker[(Mapper[_], Locale, String) =
Box[String]] = new FactoryMaker((_,_,_) = Empty) {}
Yeah.
Is there a need for the Boxed return type? Seems cleaner to just return
the passed name. But either is fine with me :-)
Then you have lots of room to keep the current implementation as the
default
if there is no actual name calculated. Further, the calculation is not
based on the currently logged in user, so you could cache the results (or
not if you're in development mode).
I assume in the implementation that Mapper would have to use S.locale to
supply the locale? Or should this also be abstracted?
S.locale is just fine.
My issue is that I like to not push functions like this towards external
files, but allow external files (and other resources) to be consulted
depending on the localization mechanism chosen for the given project.
Not sure I understand this correctly (probably a language thing :-) Do
you mean that you don't like to have this hard coded to e.g. S.?() or
more that the config hooks should provide enough parameters that you're
free to choose something other than S.?()
Both.
I think my original proposal solved the former, but probably (due to
lack of locale) not the latter.
/Jeppe
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Re: [Lift] what's the equivalent of php's var $_FILES in lift?
On Mon, Mar 1, 2010 at 10:35 PM, wm min...@gmail.com wrote: http://php.net/manual/en/reserved.variables.files.php i.e. the array of items uploaded to the current script via the HTTP POST method. I know there is FileParamHolder, but I want to get multiple files in the array. Req.uploadedFiles: List[FileParamHolder] Thanks. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Setting cookie with ajax link
On Tue, Mar 2, 2010 at 10:41 AM, Mads Hartmann mads...@gmail.com wrote:
Hello everyone,
I can't seem to get my lift app to set a cookie when clicking an ajax-
link. By looking around the list it looks like it's possible but i've
failed to get it working. Right now my test-code looks like this:
bind(banner, xhtml, hideLink - a(() = {
S.addCookie(HTTPCookie(display,false))
JsHideId(banner)
},Text(test)))
That should work. Please put together a reproducable example project, put
it on GitHub and open a ticket.
Thanks
Mads Hartmann
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Re: [Lift] how to override superUser.dbDisplay_? = false
On Mon, Mar 1, 2010 at 10:57 PM, wm min...@gmail.com wrote:
superUser is defined in ProtoUser.
class User extends ProtoUser[User] {
// I cannot make it work
//override def superUser = override def dbDisplay_? = false
}
Because of limitations in Scala, it's not currently possible to change an
inner object in ProtoUser or other proto stuff. Sorry.
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Re: [Lift] Lift 2.0M2 LiftMerge order?
On Tue, Mar 2, 2010 at 11:07 AM, Rick R rick.richard...@gmail.com wrote:
I have a pair of templates which rely on both a Snippet and a
CometActor. There appears to be a dependency injection
Dependency injection is an entirely different concept. Lift rewrites the
page as it goes out to insure comet and ajax support.
process of
sorts where lift_page is defined and liftAjax.js is included. However,
it looks like the list of things is being included in reverse order.
What do you mean reverse order? Are you seeing an actual error? Is
something actually failing?
All of the stuff in Lift is (or at least should be) invoked only after the
page load is complete.
The results seem to be the same whether I just return a NodeSeq from
CometActor.render or if I return a RenderOut defined with NodeSeq and
JsCmd.
I'm not doing anything too crazy, I do Rewrite urls for the pages used
by the cometactors, but it's pretty standard.
(On a side note, is there any way to get GET params from a Rewrite to
the render function in a CometActor?
You can't. CometActors are not rendered in response to an HTTP request and
have no access to specific request state.
, I tried a sessionVar but it
didn't work. What I ended up doing was getting the param in a snippet.
Setting it as a js variable on the page, then having the js use that
value to make a JsonCmd to the cometActor, it should work provided I
can fix the code represented below)
For example: (my comments -- inline)
-- This is the start of the template: adminchat.html
h2Welcome to The Interview Tool./h2
p
div id=F1040260232478N4M_outer style=display: inlinediv
id=F1040260232478N4M style=display: inlinediv
pspan id=info/span/p
p !-- A place to put stuff --
-- the following is the result of including : Script(JsonInCode) from
render in my CometActor. This makes sense that we need to define the
callback before using it. Note, however, that it's referencing
liftAjax.lift but we haven't included liftAjax.js yet.
script type=text/javascript
// ![CDATA[
/* JSON Func Other $$ F104026023248133W */function
F104026023248133W(obj)
{liftAjax.lift_ajaxHandler('F104026023248133W='+
encodeURIComponent(JSON.stringify(obj)), null,null);}
// ]]
/script
input type=textarea
onkeypress=processKeyPress(event.which, function(a)
{F104026023248133W({'command': quot;pressedquot;, 'params':a});})
id=txt1 /
/p
/divscript type=text/javascript
// ![CDATA[
F104026023248133W({'command': connect, 'params':chatKey});
-- okay.. we define this function again, I'm not sure why and I didn't
ask it to, but no real harm done.
/* JSON Func Other $$ F104026023248133W */function
F104026023248133W(obj)
{liftAjax.lift_ajaxHandler('F104026023248133W='+
encodeURIComponent(JSON.stringify(obj)), null,null);}
// ]]
/script/divscript type=text/javascript
// ![CDATA[
var destroy_F1040260232478N4M = function() {}
// ]]
/script/div
-- this is the end of the output from the CometACtor
/p
-- this is the end of output from the template.
/div
hr /
/div
-- this should be the end of output from default.html, but I'm
guessing this is where stuff gets merged in.
-- Here we include liftAjax, it's a bit late, but it's still wrong
because it relies on lift_page.
script type=text/javascript src=/ajax_request/liftAjax.js/script
script type=text/javascript
src=/comet_request/xkvbzq4ueltw/cometAjax.js/script
-- here's where we finally define the vars needed by liftAjax et al.
script type=text/javascript
// ![CDATA[
var lift_toWatch = {F1040260232478N4M: 1040260232480};
// ]]
/script
script type=text/javascript
// ![CDATA[
var lift_page = F1040260232477ZYH;
// ]]
/script/body
/html
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Re: [Lift] Converting a rails application to lift
On Tue, Mar 2, 2010 at 11:56 AM, Achint Sandhu achint.san...@gmail.comwrote: Hi, I'm new to scala (2.7.7) and lift (2.0-M2) and as a learning exercise have taken on the translation of an existing rails project into a lift application. There are two things I have run into that I'm hoping the more experienced members of the list can give me a hand with: 1) Is there a trait in lift that creates and manages an equivalent of the createdAt and updatedAt fields that rails provides? I'm thinking something along the lines of IdPK, but have been unable to find anything. There's nothing right now. Feel encouraged to open a ticket at https://liftweb.assembla.com/spaces/liftweb/tickets for a feature request. 2) I've been following the wiki article on setting up One-to-Many relationships (http://wiki.github.com/dpp/liftweb/how-to-work-with-one- to-many-relationshipshttp://wiki.github.com/dpp/liftweb/how-to-work-with-one-%0Ato-many-relationships) and am running into a difference in behaviour. Following the example, if I look at anAuthor.books, I get back a List of Book objects, however when I look at aBook.author, I get back a Long with the ID of the Author. I would expect aBook.author to return an Author object. I've copied and pasted the example in the wiki, to make sure that it wasn't my implementation. Other than that, so far, it's gone extremely well and I was able to get something up and running very quickly which really is a testament to the design of the framework. Thanks. Cheers, Achint -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Lift 2.0M2 LiftMerge order?
On Tue, Mar 2, 2010 at 1:21 PM, Rick R rick.richard...@gmail.com wrote:
On Tue, Mar 2, 2010 at 11:07 AM, Rick R rick.richard...@gmail.com
wrote:
I have a pair of templates which rely on both a Snippet and a
CometActor. There appears to be a dependency injection
Dependency injection is an entirely different concept. Lift rewrites the
page as it goes out to insure comet and ajax support.
Yes, that was the reason for the quotes. I am referring to the
mechanism by which lift determines that a page required ajax, so it
makes sure to include liftAjax.js.
process of
sorts where lift_page is defined and liftAjax.js is included. However,
it looks like the list of things is being included in reverse order.
What do you mean reverse order? Are you seeing an actual error? Is
something actually failing?
Yes. As I indicate below (albeit in a messy fashion) the callbacks
which use liftAjax are defined before liftAjax.js is included.
Further, the variables which are needed by liftAjax.js, such as
lift_page, are defined *after* liftAjax.js is
included.
This is what lead me to believe that these three sections are being
rendered in reverse.
What I would expect to see is lift_page being rendered before the
inclusion of liftAjax.js which occurs before
the definition of the functions which rely on liftAjax.
They are not being rendered in reverse. There is no problem. The code
works correctly.
Why?
First, the code in the CometActor is a call a function in response to an
event. The page will be loaded before you can press the button or otherwise
cause the event to be dispatched.
Second, as I said in my first response, the code in liftAjax only gets
executed after the page is loaded... that means if there's some random event
that causes the page parsing to be delayed until after the liftAjax.js file
is loaded and parsed, the calls in liftAjax that reference the variables on
the page is not going to get executed until after the page is completely
loaded (which also means the page is parsed and the inline JavaScript code
is executed.)
More broadly, we take bug reports from *actual* failures. Actual failure
means that something is not working as you expect (e.g., the comet component
is not updating, ajax stuff is not firing ajax events.) The pieces part of
Lift work well and for a wide variety of users from our friends at Four
Square to our friends at Novell to our friends at Innovation Games. It
would be very likely that if there was an actual problem with the way Lift
dealt with Comet or Ajax, that the hundreds of thousands of users of Lift
applications would have discovered the problem. But in actual fact, the
Novell folks tend to burn cycles with stuff like
http://twitter.com/djspiewak/status/9837576830 because the core Lift comet
stuff works so well for them. Sure,
therehttps://liftweb.assembla.com/spaces/liftweb/tickets/319-control-characters-in-input-can-lead-to-denial-of-service-attacks
arehttps://liftweb.assembla.com/spaces/liftweb/tickets/367-exception-net-liftweb-common-lrumap-value1
bugshttps://liftweb.assembla.com/spaces/liftweb/tickets/343-add-linktoself--true-false--option-to-menu-snippet
in
Lift, but the bugs and feature requests get serviced quickly because we can
understand what is expected, we can agree on what is expected, we can
reproduce deviations from what is expected, and then we can bring the code
into line.
(On a side note, is there any way to get GET params from a Rewrite to
the render function in a CometActor?
You can't. CometActors are not rendered in response to an HTTP request
and
have no access to specific request state.
That is fine, should one expect a SessionVar to work for a CometActor
when it is set in response to a RewriteRequest?
No. You can only communicate with CometActors via messages sent to the
CometActor with the ! operator. Comet Actors live outside of the HTTP
request/response pipeline. They may or may not share Session Vars during a
given request.
For example: (my comments -- inline)
-- This is the start of the template: adminchat.html
h2Welcome to The Interview Tool./h2
p
div id=F1040260232478N4M_outer style=display: inlinediv
id=F1040260232478N4M style=display: inlinediv
pspan id=info/span/p
p !-- A place to put stuff --
-- the following is the result of including : Script(JsonInCode) from
render in my CometActor. This makes sense that we need to define the
callback before using it. Note, however, that it's referencing
liftAjax.lift but we haven't included liftAjax.js yet.
script type=text/javascript
// ![CDATA[
/* JSON Func Other $$ F104026023248133W */function
F104026023248133W(obj)
{liftAjax.lift_ajaxHandler('F104026023248133W='+
encodeURIComponent(JSON.stringify(obj)), null,null);}
// ]]
/script
input type=textarea
onkeypress=processKeyPress(event.which, function(a)
Re: [Lift] Is CometActor the right tool for this job?
On Tue, Mar 2, 2010 at 2:33 PM, Jeppe Nejsum Madsen je...@ingolfs.dkwrote: Thanks to all for the feedbackjust one remaining question below: On Tue, Mar 2, 2010 at 7:11 PM, David Pollak feeder.of.the.be...@gmail.com wrote: [...] Unless you're going to update the graph synchronously, the comet solution is not the best. A graph with ajax/json elements that update the graph and send back new data to chart would be my choice. Did you intend to write synchronously? I meant asynchronously... basically from some event external to the current HTTP request and subsequent Ajax requests. I've been having lots of brain misfires yesterday and today... sorry. I would think comet would be better suited for asynchronous updates, and curious what you had in mind otherwise... /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Snippets in subpackages?
On Tue, Mar 2, 2010 at 1:05 PM, Heiko Seeberger heiko.seeber...@googlemail.com wrote: Hi, Isn't it possible to put snippets in subpackages of xxx.snippet? Something like lift:snippet type=com.acme.snippet.subpackage.SnippetClass? If not, what's the best way to deal with a large number of snippets? Explicitly registering the snippet dispatch in LiftRules is the way I'd recommend doing it. If this is less than 100% optimal for your use case, let's learn more about your use case and see if we have to expand how Snippets are looked up. Heiko Company: weiglewilczek.com Blog: heikoseeberger.name Follow me: twitter.com/hseeberger OSGi on Scala: scalamodules.org Lift, the simply functional web framework: liftweb.net -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Re: Converting a rails application to lift
On Tue, Mar 2, 2010 at 5:09 PM, Achint Sandhu achint.san...@gmail.comwrote:
Hi,
Is there any reason why aBook.author would not simply return a Box
instead of requiring aBook.author.obj to get the Box ?
For some background, see
http://blog.lostlake.org/index.php?/archives/19-Keeping-the-meaning-with-the-bytes.html
In Lift's Mapper fields are not flat collections of bytes like in
ActiveRecord, but entities that can control access, format, etc. their
values.
aBook.author is the field. The field is a MappedLongForeignKey. It has
lots and lots of methods on it to get, set, validate, generate forms, etc.
To make things a little more convenient, the fields know how to convert
themselves to their raw byte values. So a MappedLongForeignKey is a
MappedField[Long] and knows how to convert itself into a Long. For example:
val x: Long = aBook.author // legal
But MappedLongForeignKey fields need to be explicitly converted into the
object that they are keys to via the .obj method:
val author: Box[Author] = aBook.author.obj
I guess it would be nice to write a convenience conversion to make:
val author: Box[Author] = aBook.author
legal. Feel free to open a ticket on this.
I'm sure there is a really good reason for this and I'm just trying to
get an understanding of the underlying reasoning.
Thanks.
Cheers,
Achint
On Mar 2, 3:26 pm, Mads Hartmann Jensen mads...@gmail.com wrote:
On 02/03/2010, at 20.56, Achint Sandhu wrote:
Hi,
I'm new to scala (2.7.7) and lift (2.0-M2) and as a learning
exercise
have taken on the translation of an existing rails project into a lift
application.
There are two things I have run into that I'm hoping the more
experienced members of the list can give me a hand with:
1) Is there a trait in lift that creates and manages an equivalent of
the createdAt and updatedAt fields that rails provides? I'm thinking
something along the lines of IdPK, but have been unable to find
anything.
2) I've been following the wiki article on setting up One-to-Many
relationships (
http://wiki.github.com/dpp/liftweb/how-to-work-with-one-
to-many-relationships) and am running into a difference in behaviour.
Following the example, if I look at anAuthor.books, I get back a List
of Book objects, however when I look at aBook.author, I get back a
Long with the ID of the Author. I would expect aBook.author to return
an Author object. I've copied and pasted the example in the wiki, to
make sure that it wasn't my implementation.
You should be able to get the object by calling aBook.author.obj - this
should return a Box[Author] so you could get it like this
aBook.author.obj match {
case Full(a) = a // do something with the autor
case Empty = // if the box is empty, handle it somehow
case _ = // should cover everyhting else, Failure etc
}
Hope it helps
Other than that, so far, it's gone extremely well and I was able to
get something up and running very quickly which really is a testament
to the design of the framework.
Thanks.
Cheers,
Achint
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Re: [Lift] Re: newbie question : get lift to actually run (AbstractMethodError)
If you set -darchetypeVersion to 1.0, then you'll get Lift 1.0 built on Scala 2.7.3. If you use 1.0.3 then you'll get the latest branch of Lift 1.0... built with Scala 2.7.7. I strong recommend you use 2.0-M2 which is also built with 2.7.7 Connected by MOTOBLUR™ on T-Mobile -Original message- From: ojonam manojo10...@gmail.com To: Lift liftweb@googlegroups.com Sent: Mon, Mar 1, 2010 15:35:17 GMT+00:00 Subject: [Lift] Re: newbie question : get lift to actually run (AbstractMethodError) - tried to create a lift blank app with 2.0-snapshot, adapting the archetype:generate command from the book as required Try to show the complete command. Or look in the ML for commands that work with 2.0-SNAPSHOT So I tried two things - type mvn archetype:generate and then follow the command prompts to fill up the different properties (this didn't work) type in the following command directly (it works) mvn archetype:generate -U -DarchetypeGroupId=net.liftweb - DarchetypeArtifactId=lift-archetype-blank -DarchetypeVersion=1.0 - DremoteRepositories=http://scala-tools.org/repo-releases - DgroupId=demo.helloworld -DartifactId=helloworld -Dversion=2.0- SNAPSHOT This gives me a pom.xml with 2.7.3 (how do I by default get it to 2.7.7 instead of modifying it everytime) ? - once that is done, I modify the version of scala in my pom.xml - then I type 'mvn jetty:run' - somehow maven still downloads *both* the 2.7.1 and 2.7.7 versions of scala, and I get the warning that both of them exist This sounds bad I went to my local .m2 folder, and removed all scala related folders by hand. With the new command, I have versions 2.7.3 and 2.7.7 (still doesn't solve the problem of multiple scala versions) You may have old code laying around. If code mysteriously fails, mvn clean is your friend. Try; mvn clean jetty:run I actually removed the complete directory and redid everything. Somehow, it seems to work now, but still doesn't explain why the first type of command did not work. /Jeppe Manohar -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Compile error
On Mon, Mar 1, 2010 at 8:03 AM, Donald McLean dmclea...@gmail.com wrote: I just updated to Lift 2.0m2 and Scala 2.7.7 and now I'm getting this error message. I would greatly appreciate a suggestion on how to resolve this. This is a known bug in the Scala compiler. To fix it, do: mvn clean Donald java.lang.RuntimeException: malformed Scala signature of Loc at 5720; reference value common of package liftweb refers to nonexisting symbol. at scala.tools.nsc.symtab.classfile.UnPickler$UnPickle.errorBadSignature(UnPickler.scala:762) -- Family photographs are a critical legacy for ourselves and our descendants. Protect that legacy with a digital backup and recovery plan. Join the photo preservation advocacy Facebook group: http://www.facebook.com/home.php?ref=logo#/group.php?gid=148274709288 -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] ByList using OR instead of IN?
It used to be IN and then someone asked that it be changed to the current OR and they had a reasonable argument, so we changed it. On Sun, Feb 28, 2010 at 11:17 PM, aw anth...@whitford.com wrote: From reading Exploring Lift (Section 6.1, page 81), it says that ByList corresponds to the “field IN (x,y,z)” syntax in SQL. Well, that was what I needed, so I took it for a test drive. However, instead of seeing SQL like: where some.id in (4, 9, 20) I am seeing SQL like: where some.id = 4 or some.id = 9 or some.id = 20. I double checked the latest code: http://github.com/dpp/liftweb/blob/master/framework/lift-persistence/lift-mapper/src/main/scala/net/liftweb/mapper/MetaMapper.scala and it looks like there isn't a magical workaround to get IN working as I expected. To me, this is a violation of SQL Tuning 101: as a rule of thumb, prefer the IN clause over an OR clause. Is there a good reason why this code creates OR clauses instead of an IN clause? -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Compile error
On Mon, Mar 1, 2010 at 8:19 AM, Donald McLean dmclea...@gmail.com wrote: I appreciate the response but I'm not using Maven, I'm using Ant. If you could tell me what that would accomplish I could probably figure out the equivalent. whatever does a clean... whatever deletes all the .class files. Thank you, Donald On Mon, Mar 1, 2010 at 11:07 AM, David Pollak feeder.of.the.be...@gmail.com wrote: On Mon, Mar 1, 2010 at 8:03 AM, Donald McLean dmclea...@gmail.com wrote: I just updated to Lift 2.0m2 and Scala 2.7.7 and now I'm getting this error message. I would greatly appreciate a suggestion on how to resolve this. This is a known bug in the Scala compiler. To fix it, do: mvn clean java.lang.RuntimeException: malformed Scala signature of Loc at 5720; reference value common of package liftweb refers to nonexisting symbol. at scala.tools.nsc.symtab.classfile.UnPickler$UnPickle.errorBadSignature(UnPickler.scala:762) -- Family photographs are a critical legacy for ourselves and our descendants. Protect that legacy with a digital backup and recovery plan. Join the photo preservation advocacy Facebook group: http://www.facebook.com/home.php?ref=logo#/group.php?gid=148274709288 -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Family photographs are a critical legacy for ourselves and our descendants. Protect that legacy with a digital backup and recovery plan. Join the photo preservation advocacy Facebook group: http://www.facebook.com/home.php?ref=logo#/group.php?gid=148274709288 -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] MapperRules.nameToDisplayName?
On Mon, Mar 1, 2010 at 8:27 AM, Jim Barrows jim.barr...@gmail.com wrote: On Mon, Mar 1, 2010 at 7:19 AM, Jeppe Nejsum Madsen je...@ingolfs.dkwrote: Hi, In the interest of cutting boilerplate from mapped objects, I would like to get the display name from a property file. So your replacing code boilerplate with property file boilerplate? The boilerplate has to go somewhere, and abstracting things like this out doesn't change that. On the other hand, if you have to l10n your app, then this works. What about turning it off by default, and turned on in Boot though. Also it should probably use the existing method by default, rolling to the property file if it's turned on and it's not provided. Yeah... I gotta say, the less stuff that winds up outside Scala by default, the better. So I was thinking that it would be an idea to add a MapperRules.nameToDisplayName such as this var nameToDisplayName: ( Mapper[_], String) = (_,name) = name A department of redundancy department approved name? :) *LOL* How about displayNameFromPropertyFile? A little wordy, but it shouldn't ever need to be typed except to be overridden. This would allow me to do things like nameToDisplayName = (m,name) = S.?(m.getClass.getName+.+name) Thoughts? /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- James A Barrows -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] reload application.properties
The Props.get stuff is frozen the first time its accessed. This is a philosophical issue for me. The properties should be fixed at start-up time. If there are things to vary, build an administrative interface or some other thingy (e.g., a separate HTTP listener) that allows you to manipulate the mutable configuration. On Mon, Mar 1, 2010 at 4:57 AM, Martin marcin.szla...@gmail.com wrote: Hi is there any way to reload application.properties file after boot.scala finishes? I would like to do dynamic localization of properties on my site, without need to stop/start application. Mayby there is much better way to accomplish it. I would really appreciate any help. best regards, Martin -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Newbie Q: Lift suitable as webgui for java 6 app with embedded webserver and no database ?
Jeppe gave a great answer. Just to reinforce that Lift's webkit is totally agnostic to the data being presented. As long as that data can be materialized as instances of objects in the JVM, you can use Lift. On Mon, Mar 1, 2010 at 4:54 AM, Jeppe Nejsum Madsen je...@ingolfs.dkwrote: mortench morte...@gmail.com writes: Hi All, [...] How suited would Lift be for this scenario or to be more precise: a) Is a lift web app as fast to startup as a normal jave jsp/servlet app ? Depends mostly on your own code. If you have an empty Boot, startup is 1s. b) Can lift be used without a database and can the relate code such as the OR mapped be omitted ? Yes c) Any special considerations needed when starting and stopping an embedded lift web app ? Dunno :-) d) What does lift require of the java web server ? I.e. can some of the more lightweight java web servers be used that might not support the full servlet/jsp specifications such as the embedded HTTP server in Java 6, Winstone, Grizzly etc.? ... What (light) java webservers are lift known to work with ? You need a recent servlet implementation. Lift needs Servlet 2.5 or higher. JSP is not needed. I'm using Jetty although not embedded, but Jetty seems like it should easily be embedded. During development, I launch a small Scala app that starts jetty (the RunWebApp class generated by the Lift archetype) e) What would the best way for the lift web app to communicate with the backend code of the java app ? By just calling into the existing java code (some integration/classloader issues here?) or more loosely by calling REST WS Api exposed by the Java code ? Not sure what you envision here, but REST and loosely coupled should work :-) Given that Scala works perfectly calling Java code, I'd go with calling your Java classes directly. f) I am using ANT and not maven to develop the java app. Will be able to make Lift work with ANT so I use the same build tool for everything? Yes, but you're probably on your own g) What version of lift should I use ? In particular does Lift 2.0 change anything for my scenario ? You should use the latest 2.0-SNAPSHOT or milestone (M3 is just around the corner) /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
[Lift] Lift 2.0-M3 code slush
Folks, The Lift master branch is now in code slush in anticipation of a late Wednesday March 3rd PST release of Lift 2.0 Milestone 3. If you are a committer: THANK YOU!! for working hard and working as a team to make M3 a reality. If you committed something to M3, please contact me privately with your shipping address and your preference between coffee, tea or jam (sorry, I can't send pies) and I will have some shipped to you as a way of saying Thanks! If you are a Lift user (this means guys like HarryH and Jon) and want to help, please test your code thoroughly against the current 2.0-SNAPSHOT. If there is a defect or problem, please report it at https://liftweb.assembla.com/spaces/liftweb/tickets We'll work to determine if a fix needs to go into M3. Thanks, David -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Compile error
On Mon, Mar 1, 2010 at 9:28 AM, Donald McLean dmclea...@gmail.com wrote: That didn't help. The problem is related to the Lift-2.0-M2 libraries. I went to 1.0.3 and it is fine. If you can put together a reproduceable example, we'll look into it. Donald On Mon, Mar 1, 2010 at 11:51 AM, David Pollak feeder.of.the.be...@gmail.com wrote: On Mon, Mar 1, 2010 at 8:19 AM, Donald McLean dmclea...@gmail.com wrote: I appreciate the response but I'm not using Maven, I'm using Ant. If you could tell me what that would accomplish I could probably figure out the equivalent. whatever does a clean... whatever deletes all the .class files. Thank you, Donald On Mon, Mar 1, 2010 at 11:07 AM, David Pollak feeder.of.the.be...@gmail.com wrote: On Mon, Mar 1, 2010 at 8:03 AM, Donald McLean dmclea...@gmail.com wrote: I just updated to Lift 2.0m2 and Scala 2.7.7 and now I'm getting this error message. I would greatly appreciate a suggestion on how to resolve this. This is a known bug in the Scala compiler. To fix it, do: mvn clean java.lang.RuntimeException: malformed Scala signature of Loc at 5720; reference value common of package liftweb refers to nonexisting symbol. at scala.tools.nsc.symtab.classfile.UnPickler$UnPickle.errorBadSignature(UnPickler.scala:762) -- Family photographs are a critical legacy for ourselves and our descendants. Protect that legacy with a digital backup and recovery plan. Join the photo preservation advocacy Facebook group: http://www.facebook.com/home.php?ref=logo#/group.php?gid=148274709288 -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Family photographs are a critical legacy for ourselves and our descendants. Protect that legacy with a digital backup and recovery plan. Join the photo preservation advocacy Facebook group: http://www.facebook.com/home.php?ref=logo#/group.php?gid=148274709288 -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Family photographs are a critical legacy for ourselves and our descendants. Protect that legacy with a digital backup and recovery plan. Join the photo preservation advocacy Facebook group: http://www.facebook.com/home.php?ref=logo#/group.php?gid=148274709288 -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http
[Lift] Emerging Languages Face Off: Scala, Go, Clojure and Ruby
Folks, I'll be representing Scala in an emerging languages face-off at http://www.sdforum.org/index.cfm?fuseaction=Calendar.eventDetaileventID=13632 Interestingly, Scala and Clojure and both functional languages... indicating that FP is gaining interest from folks inside 2 standard deviations from the mean. Looking forward to seeing lots of cool folks there. Thanks, David -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Compile error
Send it to me directly, but please make sure that there are no hard-coded paths or dependencies other than Ant and Ivy that I might not have on my machine. On Mon, Mar 1, 2010 at 9:46 AM, Donald McLean dmclea...@gmail.com wrote: Fortunately, I'm doing a tech-eval prototype so I can just send the whole kit-n-caboodle. It's just under 700k as a tar file. Where should I send it? Donald On Mon, Mar 1, 2010 at 12:32 PM, David Pollak feeder.of.the.be...@gmail.com wrote: On Mon, Mar 1, 2010 at 9:28 AM, Donald McLean dmclea...@gmail.com wrote: That didn't help. The problem is related to the Lift-2.0-M2 libraries. I went to 1.0.3 and it is fine. If you can put together a reproduceable example, we'll look into it. -- Family photographs are a critical legacy for ourselves and our descendants. Protect that legacy with a digital backup and recovery plan. Join the photo preservation advocacy Facebook group: http://www.facebook.com/home.php?ref=logo#/group.php?gid=148274709288 -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] About the url rewrite (more thant one params and get 404 not found error)
On Sun, Feb 28, 2010 at 8:28 PM, Neil.Lv anim...@gmail.com wrote:
Hi all,
I have a silly question about the url rewrite in the lift.
It has another two params in the url after the img.
http://localhost:8080/show/img/version/id
The url works fine.
= http://localhost:8080/show/img
= http://localhost:8080/show/img/v1/
= http://localhost:8080/show/img/v1/1
Get 404 error if the / string is not added at the end of the url
(the id param isn't supplied)
= http://localhost:8080/show/img/v1
So, how can i rewrite the url and set the sitemap can make this link
( http://localhost:8080/show/img/v1 )
works fine as ( http://localhost:8080/show/img/v1/ ) when the id
is not supplied.
Here is the code:
###
case RewriteRequest(
ParsePath(List(show, img, version, id), _, _,_), _, _) =
RewriteResponse(List(show, img),
Map(version - version, id - id)
)
###
This is just basic pattern matching stuff. So,
case RewriteRequest(
ParsePath(show :: img :: version :: rest, _, _,_), _, _) =
RewriteResponse(List(show, img),
Map(version - version, id - (rest.firstOption getOrElse N/A))
)
Please pick up a copy of one of the Scala books and look at the pattern
matching section related to Lists. There's a lot of flexibility that's no
Lift-specific, but that Lift leverages.
val entries = Menu(Loc(Home, List(index), Home)) ::
Menu(Loc(show, List(show), show, Hidden)) :: User.sitemap
###
BTW, I use the LiftView to handle the request.
###
class show extends LiftView {
def dispatch = {
case img = imgDispatch _
case _ = allDispatch _
}
def imgDispatch(): Box[NodeSeq] = {
...
}
def allDispatch(): Box[NodeSeq] = {
...
}
}
###
Thanks very much!
Cheers,
Neil
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Re: [Lift] snakify and abbreviations
On Mon, Mar 1, 2010 at 2:46 AM, Jeppe Nejsum Madsen je...@ingolfs.dkwrote: Hi, Eager to use the new Mapper support for snake_case I discovered that the snakify method doesn' handle abbreviations well: StringHelpers.snakify(HTML) res5: java.lang.String = h_t_m_l StringHelpers.snakify(HTMLEditor) res6: java.lang.String = h_t_m_l_editor I would expect those to be html and html_editor respectively... What do people think? Yeah, adjacent caps should be part of the same word. /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Less boilerplate in your specifications / tests
Eric, You're a Lift committer. Feel very encouraged to clean up the tests! Thanks, David On Sun, Feb 28, 2010 at 4:42 PM, etorreborre etorrebo...@gmail.com wrote: Hi all Lift-developers, I have noticed a few commits recently where the declarations for specifications could be reduced to something simpler. For example: import org.specs._ import org.specs.runner._ class BindingsSpecTest extends Runner(BindingsSpec) with JUnit with Console object BindingsSpec extends Specification can be written as import org.specs._ class BindingsSpec extends SpecificationWithJUnit - the BindingsSpec class will run with maven, provided that you add the proper include directive in the pom.xml file, like this, for example: plugin groupIdorg.apache.maven.plugins/groupId artifactIdmaven-surefire-plugin/artifactId version2.4.3/version configuration useSystemClassLoaderfalse/useSystemClassLoader argLine-Xmx512m/argLine forkModealways/forkMode includes include**/*Unit.java/include include**/*Spec.java/include /includes excludes exclude**/*Test.java/exclude /excludes /configuration /plugin - It will also run in the console, like this: scala -cp classpath run net.liftweb.http.BindingsSpec I hope this helps, please ping me if you have any concern with this. Eric. PS: I forgot to mention that I am guilty of the situation above because of how things were done in specs when I starting contributing the first specifications to Lift,... PPS: I've edited the User Guide to make clear what was the preferred way of using JUnit with specs: http://code.google.com/p/specs/wiki/RunningSpecs#Run_your_specification_with_JUnit4 -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Emerging Languages Face Off: Scala, Go, Clojure and Ruby
On Mon, Mar 1, 2010 at 11:18 AM, Mads Hartmann Jensen mads...@gmail.comwrote: Any chance that there'll be an audio version after? Would love the hear it :) I don't know. Miking/mixing 4 participants is non-trivial (beyond what I can do with my traveling AV stuff) On 01/03/2010, at 19.53, Jim Barrows wrote: Best of luck! Will you be facing off with swords or... oh wait.. never mind... ;) On Mon, Mar 1, 2010 at 10:50 AM, David Pollak feeder.of.the.be...@gmail.com wrote: Folks, I'll be representing Scala in an emerging languages face-off at http://www.sdforum.org/index.cfm?fuseaction=Calendar.eventDetaileventID=13632 Interestingly, Scala and Clojure and both functional languages... indicating that FP is gaining interest from folks inside 2 standard deviations from the mean. Looking forward to seeing lots of cool folks there. Thanks, David -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- James A Barrows -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Running parallel site load balanced
On Mon, Mar 1, 2010 at 12:29 PM, John Pletka jple...@abraxis.com wrote: I was tasked with designing a new web-based application that has the requirement of being able to run on multiple servers that could be 1) Load balanced without requiring sticky sessions and 2) Single nodes could be transparently shutdown or added without the users noticing I would like to use Lift if possible, but I'm a bit worried about it's state-full nature. Is it possible to use something like Cassandra or Memcached to hold the session data and have Lift grab that from a cookie instead of storing it all internally in memory? I've looked around, but I have not found any good articles about how to scale Lift horizontally. The short answer is that Lift is stateful and you can't shovel Lift state into a backing store. You could use Terracotta to create a cluster of Lift machines, but you're still going to be a lot better off routing requests back to the same machine to avoid shuffling a lot of state around (which is expensive any way you slice it) If you could tell us more about your app, there might be other ways to skin your cat. http://icanhascheezburger.com/2007/08/08/i-has-minions/ Thanks, David Thanks in advance John -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Running parallel site load balanced
On Mon, Mar 1, 2010 at 1:19 PM, Jeppe Nejsum Madsen je...@ingolfs.dkwrote: Ahh just saw David beat me to it with the other reply :-) John Pletka jple...@abraxis.com writes: It is a business application - lots of forms, reports, data lookups. I'm not too concerned about the performance on a single node - at any given time we'll probably have a max of 1000 requests a minute coming in which I've seen Lift handle easily. The biggest problem is we need near 100% up-time. But you can have near 100% uptime with sticky sessions. What you can't have is High Availability (HA), ie. users won't notice when a server breaks. There are 3 scenarios: 1. Unplanned fail-over. Having a hot standby and extended login session (See ProtoExtendedSession). The user would lose a stateful multi-page wizard and would lose input to the particular screen they were on. It would appear as a glitch... not optimal, but not end of the world. 2. Planned transfer. You could shuffle all new sessions off to the new machine and let the old sessions age on the old server. With a little extra work, you could demark when a user was done with a logic task (e.g., going back to the home page) and use that as the trigger to move the session to the new machine. 3. Upgrade that breaks the DB schema. You're going to have downtime. No way around it. That means having at least a second server in hot-standby mode (preferably parallel production), and some way to do upgrades without bringing the whole site offline. Doing rolling upgrades is never easy, even if you don't share state. You may have all this figured, but you need to account for different app versions running simultaneously, expanding/shrinking db upgrades etc. /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] MapperRules.nameToDisplayName?
If the mechanism was something more along the lines of: display name calculator: (Mapper[_], Locale, String) = Box[String] // we could use Lift's factory mechanism here Then you have lots of room to keep the current implementation as the default if there is no actual name calculated. Further, the calculation is not based on the currently logged in user, so you could cache the results (or not if you're in development mode). My issue is that I like to not push functions like this towards external files, but allow external files (and other resources) to be consulted depending on the localization mechanism chosen for the given project. On Mon, Mar 1, 2010 at 12:56 PM, Jeppe Nejsum Madsen je...@ingolfs.dkwrote: Jim Barrows jim.barr...@gmail.com writes: My point was that you've moved the boilerplate, not eliminated it. If what you suggest was in place you'd have to add 100+ properties in a file. I'm not sure if we're wandering out on a philosophical tangent here, but would genuinely like to hear if you have better solutions: Given that I have say 100 fields and need it translated to say 5 different languages. I need to have at least 500 words stored somewhere. If I don't want to use a word's position in the file as key, I'll need a key per word. I would also like one file per language since this allows independent translation. So now I have 5 files each with 100 lines containing two words. But AFAIKS, there's no repetition (except for the keys, which I think are unavoidable), so no boilerplate. Now I have to add the 100 overrides to actually look up the translated names. This is the only place I see boilerplate, and it could be easily removed :-) I agree 100% that if you don't need translation, properties are often the wrong approach, but when you do need it I've yet to see a better alternative (but would love to hear about it!) /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] reload application.properties
On Mon, Mar 1, 2010 at 12:30 PM, Jeppe Nejsum Madsen je...@ingolfs.dkwrote: David Pollak feeder.of.the.be...@gmail.com writes: The Props.get stuff is frozen the first time its accessed. This is a philosophical issue for me. The properties should be fixed at start-up time. If there are things to vary, build an administrative interface or some other thingy (e.g., a separate HTTP listener) that allows you to manipulate the mutable configuration. And I agree very much in this philosophywhen we're talking production. I'm interested if you feel the same way about this during development? If so, stop reading as the rest will just be a rant, if not read on :-) I think the static nature of some of Lift's internals is one of the greatest productivity killers when it comes to rapidly start up with a new app where you quickly iterate different ideas (or even do many small changes in an existing app). 1) Change the menu structure? Restart server Yes. This is a problem. 2) Change the menu text? Restart server (yes I use properties for text and yes I need an app in different languages, see other thread :-) This is a problem as well. 3) Change something in a mapped field? Restart server This is unavoidable. If the model changes, you have to re-sync to the RDBMS and this requires a restart. In practice, how often do you change your model? 4) Change a field label? Restart server With JRebel, the change to a field label should be reflected immediately. Using JRebel doesn't really help in these scenarios as the values are fixed at start-up. There are probably others, but these are the ones I can recall. Perhaps I'm being hit harder than others since 1) We need different languages and 2) You need to be logged in to see the app. Or perhaps I just don't develop in an efficient way who knows? It would be really nice for some of this to be picked up automatically when running in development mode. I still remember some time ago when I did a project in PHP. I don't like the PHP language very much, but you can't really beat the instant gratification of a code change: Just reload the page! The problem is two-fold: (1) Lift is stateful and trying to morph the state based on change to logic is non-trivial and (2) the amount of logic you can get into a line of PHP vs. a line of Scala is 2-3 orders of magnitude different. I think some of these issues could be solved easily, some will require more work and some may be impossible. - Reloading properties if the file has changed should be easy. What do you keep in your properties file? I keep database connection info and service endpoints (e.g., Amazon S3 urls and passwords). Changing this stuff should require an app restart. What do you keep in your properties files that can change at runtime? - Rebooting lift on the fly may not be easy, but perhaps some things could be made reloadable (sitemap?). If you then write a JRebel plugin (not a hard task) that triggers the reload when a class change is detected, you will be one step closer to RAD nirvana. SiteMap is an easy case. If you'd be so kind as to open a ticket and assign it to me, I'll make SiteMap morphable in development mode. What other things need changing? Maybe the LiftRules stuff can be more dynamic at runtime. I'm interested to hear if others have the same pain points as me (if not, I don't see this changing soon :-) and if there are some ideas how to remedy this (either by changing Lift or changing my development process :-) /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] New logging code is in master
Excellent! We have the deprecations turned off in the pom.xml file by default... but gotta turn the deprecation warnings on post M3. On Sun, Feb 28, 2010 at 8:14 AM, Jeppe Nejsum Madsen je...@ingolfs.dkwrote: The new logging code is now in master and should be fully usable. Therefore, the existing logging code has been deprecated. I've added a Wiki article here: http://wiki.github.com/dpp/liftweb/logging-in-lift /Jeppe -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/liftweb?hl=en.
Re: [Lift] Eearly functions not working in 280_port_refresh
On Sat, Feb 27, 2010 at 8:32 AM, Michel michel.krae...@googlemail.comwrote:
Hi!
I compiles Lift myself using the branch 280_port_refresh. I
registered a function to be called early in the request cycle to set
the web servers character encoding:
override def boot {
def makeUtf8(r: HTTPRequest) {
//will never be called!
r.setCharacterEncoding(UTF-8)
}
LiftRules.early.append(makeUtf8)
...
}
The makeUtf8 function is never called although it is correctly
appended to the early list (I checked that using breakpoints in
Eclipse. I double checked by temporarily throwing dummy
RuntimeExceptions).
Is this a bug or am I doing something wrong?
Sounds like a bug. Please open a ticket at
https://liftweb.assembla.com/spaces/liftweb/tickets
Thanks,
Michel
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Re: [Lift] Reasoning Behind Box
Daniel,
Thanks for asking the question and I hope the discussion will go better than
the last time we had an in depth discussion on the topic. I'm going to
respond in a Prologue, History, Reactions, Code Examples and Conclusion.
*Prologue*
I'm not a classically trained CS guy. I've never taken an FP-related CS
course in my life. I've only done any real FP-related coding since November
2006. I've only taken 3 CS courses in my entire life (360 assembler [almost
got thrown out because the teacher hated the fact that I always found bugs
in her homework assignments during the class in which she handed out the
assignments], data structures and algorithms [got accused of cheating on
mid-term because my sorting algorithm ran 10x faster than the next
fastest... turns out I randomized the incoming data {avoids O(n^2) issue in
QuickSort} and created faux-pointers and sorted those rather than the
structures {this was in Pascal}], and a database theory class [almost got
thrown out because the comments in my code were considered
unprofessional... rescued my grade by writing a hand SQL parser rather
than using Flex/Bison]). The reason I say this is that I'm not going to
discuss ADTs, mathematical properties, or anything else. I'm not qualified
or capable of having that kind of discussion.
I'm also lazy and pragmatic. If a library works for me, I use it. If a
library requires a lot of working-around, I ask for fixes and if I don't get
them, I write my own. I did this with the NextStep Text object... it didn't
have what I needed for Mesa, the Next guys weren't happy about giving what I
needed... I wrote my own... then the Next guys rolled a lot of my concepts
into the NS Text object. The same thing happened with the NextStep font
chooser... in fact, Mesa's font chooser was the first piece of open source
software I wrote... but I digress.
*History*
Back when I was the only Lift committer (okay, maybe SteveJ had commit
rights back then... I don't remember) and I was working on the first
Lift-based app, I was experiencing a nasty issue. This was summer of 2007.
This was circa Scala 2.4 and before Either was in the language. One of the
common patterns I kept running across was iterating through a series of
pieces of user-input (both from the UI and from the REST interfaces) and
having to return a not-answer (None) and the reason for the inability to
complete the operation. It was about the same time, moved away from pattern
matching against Options in favor of using Options in for comprehensions.
The first thing I tried was to use Options in conjunction with exceptions
(yeah, I was still lost in Java-think) such that in the case of a None for a
particular operation (loading an item from the database, etc.), I'd throw an
exception, the caller would catch the exception and present the right thing
to the user/caller. It was ugly.
I posted to the Scala mailing list and, well... there were not a lot of good
suggestions other than use Either (e.g., write my own Either library). The
problem with Either is that it was not usable in for comprehensions and
pattern matching was becoming increasingly deprecated. One of our advisors
(http://www.lukehohmann.com/ ) was particularly keen on keeping a low McCabe
complexity number for code (see
http://en.wikipedia.org/wiki/Cyclomatic_complexity ). For comprehensions
offered a very low complexity where pattern matching explodes complexity.
So, I finally bit the bullet and wrote my own set of classes that offered
the kind of functionality that I was cobbling together with Option. I
originally called the class Can (a short name for something that contains or
does container a unit of something... a can of soup, a can of beans.) I
patterned Can after Option (btw, Option is one of the worst names in the
Scala libraries... explaining what an Option is to a Java or Ruby guy was
one of my biggest stumbling blocks... Maybe would have been a much better
name, but I digress.)
Can became a better Option. In addition to having Full/Empty (Some/None),
it also had Failure... a subclass that could contain information as to why
the Can did not contain anything. From an object hierarchy standpoint, Can
and Option are identical at the first children: Full == Some. EmptyCan ==
None. The other problems I saw with Option were:
- The get method was too easy for Java (and Ruby) developers to get
wrong. Get is *FREAKING DANGEROUS*. It's an exception waiting to happen.
It should not be used except in the most extreme situation. But with a
nice, tasty, comforting, access-worthy name like get, it just begs to be
invoked. Something like 30% of our production-time defects resulted from
mis-using Option.get. This needed to be changed... so something that says
danger like open_! Oh, yeah, the ! says hmmm... why is that !
there? Should I be using this method?
- orElse orElse orElse... who named this method. In terms of method
naming the Else is a useless
Re: [Lift] Liftweb and XHTML Strict 1.0
On Fri, Feb 26, 2010 at 11:55 AM, Cliff Zhao zha...@gmail.com wrote:
David,
I have created a ticket for it (#373). I also uploaded my test project to
http://github.com/zhaotq/playliftweb.
Awesome... I'll get it fixed today for 2.0-M3. Thanks for taking the time
to build a repro case!
Thanks.
Best Regards,
Cliff Zhao
On Thu, Feb 25, 2010 at 1:15 PM, David Pollak
feeder.of.the.be...@gmail.com wrote:
On Thu, Feb 25, 2010 at 10:12 AM, Cliff Zhao zha...@gmail.com wrote:
David,
I have done some investigation and found:
1. The problem does not appear if I use lift:surround
2. It will appear if I do not use lift:surround, namely I do not use any
template.
My guess is:
1. using lift:surround, the html tag, which has the xmlns and xmlns:lift
attribute, is in the template file; and my main file's root tag is
lift:surround and no namespace info. In this case, the xml node sequence
passed to bind method does not have any namespace information, therefore the
namespaces are not rendered. This is what I expected.
2. when not using template, the html tag with the xmlns and xmlns:lift
attribute is the root tag of my main file, and the xml node sequence passed
to bind method have the namespace information, therefore, the bind method
does not try to detect the rendering context and does nothing to the node
sequence and the namespaces get rendered.
I think that the bind method should suppress xmlns attributes.
Any thoughts?
I think it's a deeper issue with the Scala XML libraries. ;-) With a
repro case and a ticket, I can fix it.
Thank you very much.
Best Regards,
Cliff Zhao
On Thu, Feb 25, 2010 at 11:54 AM, David Pollak
feeder.of.the.be...@gmail.com wrote:
I am unable to reproduce this behavior. Can you post an example of your
code to a GitHub project and open a ticket at
https://liftweb.assembla.com/spaces/liftweb/tickets and I'll look into
it.
On Thu, Feb 25, 2010 at 7:53 AM, Cliff Zhao zha...@gmail.com wrote:
I just refreshed my environment. I am using Lift 2.0 snapshot dated
20100224204407.
Cliff
On Wed, Feb 24, 2010 at 10:41 PM, David Pollak
feeder.of.the.be...@gmail.com wrote:
On Wed, Feb 24, 2010 at 2:35 PM, Cliff Zhao zha...@gmail.com wrote:
One of my project requirements is to be complaint with XHTML Strict
1.0.
I have set the Lift to use XHTML Strict 1.0 and the Lift generates
the page:
!DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Strict//EN
http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd;
html xmlns:lift=http://liftweb.net/; xmlns=
http://www.w3.org/1999/xhtml;
head
titleCliff's Test/title
/head
body
p
Hello world!
/p
form action=/survey/ method=post
p xmlns:lift=http://liftweb.net/; xmlns=
http://www.w3.org/1999/xhtml;
input name=F63599703223BC2 type=submit value=New /
label for=commentsComments/labelbr /
textarea rows=10 name=F63599693222EH4 cols=40
id=commentsABC/textarea
input name=F63599703223BC2 type=submit value=New /
/p
/form
script type=text/javascript
src=/survey/ajax_request/liftAjax.js/script
script type=text/javascript
// ![CDATA[
jQuery(document).ready(function()
{liftAjax.lift_successRegisterGC();});
var lift_page = F63599693221SZP;
// ]]
/script/body
/html
It seems to be OK, but when I put them into W3C validator, it points
out 1 error:
[image: Error] *Line 13, Column 43*: Attribute xmlns is not a
valid attribute. Did you mean onmouseup or onmouseover?
p xmlns:lift=http://liftweb.net/;
xmlns=**http://www.w3.org/1999/xhtml;
✉http://validator.w3.org/feedback.html?uri=;errmsg_id=108#errormsg
You have used the attribute named above in your document, but the
document type you are using does not support that attribute for this
element. This error is often caused by incorrect use of the Strict
document type with a document that uses frames (e.g. you must use the
Transitional document type to get the target attribute), or by using
vendor proprietary extensions such as marginheight (this is usually
fixed
by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in
the document type you are using, as an undefined element will have no
supported attributes; in this case, see the element-undefined error
message
for further information.
How to fix: check the spelling and case of the element and attribute,
(Remember XHTML is all lower-case) and/or check that they are both
allowed
in the chosen document type, and/or use CSS instead of this attribute.
If
you received this error when using the embed element to incorporate
flash
media in a Web page, see the FAQ item on valid
flashhttp://validator.w3.org/docs/help.html#faq-flash
.
My original code is:
!DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Strict//EN
http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd;
html xmlns=http://www.w3.org/1999/xhtml; xmlns:lift=
http://liftweb.net/;
head
titleCliff's
Re: [Lift] Problems on tomcat
Use Lift 1.0.3 and Scala 2.7.7 Or even better, use Lift 2.0-M2 and Scala 2.7.7 Scala Actors have notorious issues and we moved to our own Actor implementation which avoids most of the Scala Actor issues. On Fri, Feb 26, 2010 at 11:31 AM, Donald McLean dmclea...@gmail.com wrote: After researching various issues, I carefully checked to insure that I am actually using Lift 1.0.2 with Scala 2.7.5. I am seeing numerous exceptions in the log. One is single error and all of the others relate to actors. Any suggestions would be greatly appreciated. Donald 1. Occurs almost immediately after deploying the web app 26 Feb 2010 13:57:37,726 - ERROR lift - Servlet destruction failure java.lang.RuntimeException: snapshot operation not supported. at scala.Predef$.error(Predef.scala:76) at scala.actors.Scheduler$.snapshot(Scheduler.scala:53) at net.liftweb.http.LiftServlet.destroy(LiftServlet.scala:56) at net.liftweb.http.LiftFilter.destroy(LiftServlet.scala:570) at org.apache.catalina.core.ApplicationFilterConfig.release(ApplicationFilterConfig.java:332) at org.apache.catalina.core.StandardContext.filterStop(StandardContext.java:3835) at org.apache.catalina.core.StandardContext.stop(StandardContext.java:4567) at org.apache.catalina.manager.ManagerServlet.undeploy(ManagerServlet.java:1363) at org.apache.catalina.manager.HTMLManagerServlet.undeploy(HTMLManagerServlet.java:562) at org.apache.catalina.manager.HTMLManagerServlet.doGet(HTMLManagerServlet.java:123) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583 ) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) at java.lang.Thread.run(Thread.java:619) 2. This occurs several times - one for each actor? INFO org.apache.catalina.loader.WebappClassLoader - Illegal access: this web ap plication instance has been stopped already. Could not load scala.actors.Actor$$anonfun$9. The eventual following stack trace is caused by an error thrown for debugging purposes as well as to attempt to termina te the thread which caused the illegal access, and has no functional impact. java.lang.IllegalStateException at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1273) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) at scala.actors.Actor$class.exitLinked(Actor.scala:895) at net.liftweb.http.SessionMaster$.exitLinked(LiftSession.scala:118) at scala.actors.Actor$class.exitLinked(Actor.scala:907) at net.liftweb.http.SessionMaster$.exitLinked(LiftSession.scala:118) at scala.actors.Reaction.run(Reaction.scala:99)at net.liftweb.http.ActorSchedulerFixer$$anon$1$$anon$3.run(LiftServlet.scala:673) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) -- Family photographs are a critical legacy for ourselves and our descendants. Protect that legacy with a digital backup and recovery plan. Join the photo preservation advocacy Facebook group: http://www.facebook.com/home.php?ref=logo#/group.php?gid=148274709288 -- You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to lift...@googlegroups.com. To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.comliftweb%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/liftweb?hl=en. -- Lift, the simply functional web framework
