[Lift] Fwd: [scala-internals] Re: Scala advertising at Stack Overflow
Lift might be interested in this too. --j Forwarded conversation Subject: [scala-internals] Scala advertising at Stack Overflow From: *Daniel Sobral* dcsob...@gmail.com Date: Sat, Dec 19, 2009 at 8:29 AM To: scala-internals scala-intern...@listes.epfl.ch Should EPFL endeavor to get some free advertising for Scala at Stack Overflow, as described at http://blog.stackoverflow.com/2009/12/free-vote-based-advertising-for-open-source-projects/ ? The required work consists of little more than producing a 220x220 Scala advertising image and posting it at the proper (time-wise) thread tagged open-source-advertising on meta.stackoverflow.com ( http://meta.stackoverflow.com/questions/tagged/open-source-advertising). The exact details can be found in that post (presently, http://meta.stackoverflow.com/questions/31913/open-source-advertising-sidebar-1h-2010 ). -- Daniel C. Sobral I travel to the future all the time. -- From: *Daniel Sobral* dcsob...@gmail.com Date: Sat, Dec 19, 2009 at 8:48 AM To: scala-internals scala-intern...@listes.epfl.ch Looking at some ads already posted, I think it is necessary to make a clarification. These ads are not intended to be product ads, but open source projects ads. Or, in other words, to attract interest from people interested in working at these projects. -- 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] foursquare.com now basically all on Lift
I've been MIA from the Lift community recently, but I've gotta say I love Foursquare and use it almost every day. It gives me even more warm fuzzies to know that it's using Lift under the hood :) Thanks for a great app! --j On Tue, Nov 17, 2009 at 12:16 PM, harryh har...@gmail.com wrote: I've been a bit coy about it on the list, but three months ago when I joined the team at foursquare.com I made the final decision that we would port our webservers to Scala/Lift. It took about 3 months, but foursquare.com is now basically running only on Lift(1). This includes the website, a mobile website (m.foursquare.com) and a simple (but growing!) REST api (api.foursquare.com). I'd like the send a huge thank you to dpp and the rest of the Lift team. You've built a really great framework here, and I look forward to using it and seeing it grow for many years to come. An additional thanks goes out to all those who have answered my many random questions over the past couple of months. For those who haven't yet found out about foursquare, you can read more about it here: http://foursquare.com/learn_more Anyways, that's about enough self promotion, but I did want to officially let the community know about what I hope will be a fairly high profile site that is using Lift. -harryh (1) Haven't quite ported feeds.foursquare.com, and there is a legacy PHP based REST api that will live on for a bit longer as it supports current versions of our iPhone app. -- 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=. -- 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=.
Re: Lift + Scala 2.8 (Was: Re: [Lift] Re: Is there any eclipse setup that actually works for lift?)
No, sorry. I haven't spent any more time on this. --j On Thu, Jul 23, 2009 at 10:13 PM, Naftoli Gugenheim naftoli...@gmail.comwrote: Any update on this? On Mon, Jun 22, 2009 at 10:55 PM, David Pollak feeder.of.the.be...@gmail.com wrote: On Mon, Jun 22, 2009 at 7:51 PM, Jorge Ortiz jorge.or...@gmail.comwrote: I just spent all afternoon trying to get stuff to compile with Scala 2.8. Since Lift depends on Specs, and Specs depends on Scalacheck, I started trying to port Scalacheck to 2.8 so I could port Specs to 2.8 so I could port Lift. It was unable to get Scalacheck to compile due to bugs which cause the compiler to choke and throw an exception. Apparently both paulp and Iulian have tried to compile Scalacheck with 2.8 before and failed. Giving up on Specs and Scalacheck, I decided to try to compile Lift (sans tests) with 2.8. After fixing some of the breaking changes that 2.8 introduces, I again ran into compiler troubles. In principle, with a lot of sleuthing I could figure out what code is causing the compiler to choke and give the compiler more type hints or whatever. Unfortunately this requires more work than I can put in today. Conclusion: 2.8 is basically unusable right now. (I'll check in my progress to GitHub later tonight or tomorrow.) Thanks for your hard work! --j On Mon, Jun 22, 2009 at 11:35 AM, David Pollak feeder.of.the.be...@gmail.com wrote: On Mon, Jun 22, 2009 at 11:25 AM, Ellis ellis.whiteh...@gmail.comwrote: Hello David, Thanks for your reply. Do you know whether lift *should* work with scala 2.8 when we pull it from the maven repositories? Lift currently only works with Scala 2.7.4. You can use Eclipse and 2.7.5 to edit Lift files, but Lift must be deployed against 2.7.4. We will have a branch of Lift (Jorge... you got this running yet) building against 2.8, but it will be experimental. I have experienced a fair number of suboptimalities with Lift and Eclipse in the last 3 weeks with the 2.7.5 stable plugin. I have had success recently with NetBeans, IntelliJ, and emacs. If so, then I'll try deleting my ~/.m2 as Tim suggested. Thanks, Ellis On Jun 22, 8:14 pm, David Pollak feeder.of.the.be...@gmail.com wrote: Ellis, Miles will be back online in a few days, but I suspect that the answer is that the 2.8 plugin is the new generation and the 2.7.5 stuff is going to have bugs. :-( Sorry. David On Mon, Jun 22, 2009 at 11:08 AM, Ellis ellis.whiteh...@gmail.com wrote: Hello everyone, Does anyone have a setup for eclipse that works like it should? By like it should, I mostly mean that the scala plugin doesn't crash regularly AND it works with lift/maven. If so, which versions of which plugins are you using? The nightly build of the scala plugin seems to work better than 2.7.4/2.7.5 in some ways, but I couldn't get it working with lift/ maven due to signature differences between the scala libraries. Best regards, Ellis -- Lift, the simply functional web frameworkhttp://liftweb.net Beginning Scalahttp://www.apress.com/book/view/1430219890 Follow me:http://twitter.com/dpp Git some:http://github.com/dpp -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Git some: http://github.com/dpp -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Git some: http://github.com/dpp --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: http://wiki.liftweb.net request
All you have to do is register for an account. Anonymous edits aren't allowed. --j On Fri, Jul 10, 2009 at 11:09 PM, DFectuoso santiago1...@gmail.com wrote: How can people get editing power on the wiki? Is it intended to be used as a (real) wiki? Who is responsable right now for hosting that and keeping it up? I was fizzling around today with mySql and lift following the advice there and decided I would like to expand the article with some problems I had and how i solved and that kind of stuff =) --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Using Mapper outside Lift?
I've used Mapper in desktop apps too. It works fine. --j On Tue, Jun 23, 2009 at 9:56 AM, Naftoli Gugenhem naftoli...@gmail.comwrote: I used mapper in an offline (demo) app. You have to include the util and http jars IIRC but it's a desktop app. If you're subcribed to scala-user, I posted it (I think last week) in the thread about a scala SWT DSL. - Timothy Perretttimo...@getintheloop.eu wrote: Hi Joe, Mapper does not work standalone, its not like ActiveRecord in that sense - its tied to lift-webkit. Your best bet would be to go with JPA; I think that will serve you better anyway. Cheers, Tim On Jun 23, 4:47 pm, Joe Wass j...@folktunefinder.com wrote: Good afternoon (at least in England), I'm writing an application which has a significant Lift manifestation, but also some stand-alone Scala (maybe even Java but I'll exclude this from the conversation). The stand-alone code is a set of tools that hang off the database and do some heavy-lifting with the data in the database, out of sync with the site. Something like periodic data- crunching from the data on the site. The question comes down to database mapping. I was wondering what people think is a sensible way of doing this. My data model is simple enough that Mapper could work and I could use the same classes. I'm aware there are many different ways I could do it, but it would be nice to do it that way for the sake of simplicity. Does this sound a sensible approach? Has anyone else written an app that's half online, half offline? Are there any obvious pitfalls? Cheers Joe --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Using Mapper outside Lift?
The OP claims his data model is simple enough for Mapper. If he doesn't mind adding the lift-webkit jar to his classpath, I don't see a problem with using Mapper. --j On Tue, Jun 23, 2009 at 10:46 AM, Timothy Perrett timo...@getintheloop.euwrote: I didn¹t say that it *wouldn¹t* work, just that its tied to lift-webkit... Besides, he says that he will be doing a lot of data intensive processing - seems like JPA would play better there as Mapper is usually has a ceiling of functionality and then it becomes necessary to move to JPA anyway. IMHO, might as well save the recoding time and just work with JPA right away if he knows from the start that he will have tricky data ORM tasks. Cheers, Tim On 23/06/2009 18:28, Jorge Ortiz jorge.or...@gmail.com wrote: I've used Mapper in desktop apps too. It works fine. --j On Tue, Jun 23, 2009 at 9:56 AM, Naftoli Gugenhem naftoli...@gmail.com wrote: I used mapper in an offline (demo) app. You have to include the util and http jars IIRC but it's a desktop app. If you're subcribed to scala-user, I posted it (I think last week) in the thread about a scala SWT DSL. - Timothy Perretttimo...@getintheloop.eu wrote: Hi Joe, Mapper does not work standalone, its not like ActiveRecord in that sense - its tied to lift-webkit. Your best bet would be to go with JPA; I think that will serve you better anyway. Cheers, Tim On Jun 23, 4:47 pm, Joe Wass j...@folktunefinder.com wrote: Good afternoon (at least in England), I'm writing an application which has a significant Lift manifestation, but also some stand-alone Scala (maybe even Java but I'll exclude this from the conversation). The stand-alone code is a set of tools that hang off the database and do some heavy-lifting with the data in the database, out of sync with the site. Something like periodic data- crunching from the data on the site. The question comes down to database mapping. I was wondering what people think is a sensible way of doing this. My data model is simple enough that Mapper could work and I could use the same classes. I'm aware there are many different ways I could do it, but it would be nice to do it that way for the sake of simplicity. Does this sound a sensible approach? Has anyone else written an app that's half online, half offline? Are there any obvious pitfalls? Cheers Joe --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
Lift + Scala 2.8 (Was: Re: [Lift] Re: Is there any eclipse setup that actually works for lift?)
I just spent all afternoon trying to get stuff to compile with Scala 2.8. Since Lift depends on Specs, and Specs depends on Scalacheck, I started trying to port Scalacheck to 2.8 so I could port Specs to 2.8 so I could port Lift. It was unable to get Scalacheck to compile due to bugs which cause the compiler to choke and throw an exception. Apparently both paulp and Iulian have tried to compile Scalacheck with 2.8 before and failed. Giving up on Specs and Scalacheck, I decided to try to compile Lift (sans tests) with 2.8. After fixing some of the breaking changes that 2.8 introduces, I again ran into compiler troubles. In principle, with a lot of sleuthing I could figure out what code is causing the compiler to choke and give the compiler more type hints or whatever. Unfortunately this requires more work than I can put in today. Conclusion: 2.8 is basically unusable right now. (I'll check in my progress to GitHub later tonight or tomorrow.) --j On Mon, Jun 22, 2009 at 11:35 AM, David Pollak feeder.of.the.be...@gmail.com wrote: On Mon, Jun 22, 2009 at 11:25 AM, Ellis ellis.whiteh...@gmail.com wrote: Hello David, Thanks for your reply. Do you know whether lift *should* work with scala 2.8 when we pull it from the maven repositories? Lift currently only works with Scala 2.7.4. You can use Eclipse and 2.7.5 to edit Lift files, but Lift must be deployed against 2.7.4. We will have a branch of Lift (Jorge... you got this running yet) building against 2.8, but it will be experimental. I have experienced a fair number of suboptimalities with Lift and Eclipse in the last 3 weeks with the 2.7.5 stable plugin. I have had success recently with NetBeans, IntelliJ, and emacs. If so, then I'll try deleting my ~/.m2 as Tim suggested. Thanks, Ellis On Jun 22, 8:14 pm, David Pollak feeder.of.the.be...@gmail.com wrote: Ellis, Miles will be back online in a few days, but I suspect that the answer is that the 2.8 plugin is the new generation and the 2.7.5 stuff is going to have bugs. :-( Sorry. David On Mon, Jun 22, 2009 at 11:08 AM, Ellis ellis.whiteh...@gmail.com wrote: Hello everyone, Does anyone have a setup for eclipse that works like it should? By like it should, I mostly mean that the scala plugin doesn't crash regularly AND it works with lift/maven. If so, which versions of which plugins are you using? The nightly build of the scala plugin seems to work better than 2.7.4/2.7.5 in some ways, but I couldn't get it working with lift/ maven due to signature differences between the scala libraries. Best regards, Ellis -- Lift, the simply functional web frameworkhttp://liftweb.net Beginning Scalahttp://www.apress.com/book/view/1430219890 Follow me:http://twitter.com/dpp Git some:http://github.com/dpp -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Git some: http://github.com/dpp --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: scalajpa - while accessing two distincts databases, the second access is made with a connection to the first database
In Derek's defense, it's not how objects in classes work but how Lift
RequestVars work. Scala objects in classes aren't global singletons, just
per-class-instance singletons. But a Lift ReuqestVar object in a class is
pretty much a global singleton (unless you do some hacking like Derek did).
--j
On Tue, Jun 16, 2009 at 11:14 PM, Derek Chen-Becker
dchenbec...@gmail.comwrote:
I agree that it's an issue. In my own defense, what I meant was not that I
didn't think people would use more than one DB. I actually have several apps
(not yet converted to Lift) that use 4 or more persistence units that
represent various legacy databases. Rather, I failed to realize the problem
that would arise from defining the EM factory as a singleton because when I
wrote that code I didn't fully understand how member objects on classes
worked. Other than that, I agree with your post :)
Derek
On Tue, Jun 16, 2009 at 5:38 PM, Meredith Gregory
lgreg.mered...@gmail.com wrote:
Derek,
soapbox
You have just demonstrated a process that i have been talking about for
the last 15 years. People have a blind spot when it comes to thinking
compositionally. They think -- almost to a person -- about god's eye view
solutions where there's only one of some key solution component. They don't
think about solutions that are composed of ... (wait for it)... solutions!
It takes some serious training to think compositionally. Compositional
solutions, however, are the only realistic way to scale. When solutions are
compositional, you can *de*compose. The db example is a case in point.
One of the most natural ways to scale data access is sharding and
partitioning -- which requires upfront machinery to support decomposition of
the store.
Lest you feel bad, note that some of the best scientific minds of all time
have fallen prey to this blind spot. Newtonian physics as well as Einstein's
update to Newton's proposal is a non-compositional solution. Quantum
mechanics also exhibits compositional failures. This is why physics is
failing to find proposals that link theories of gravitation (essentially
large scale) to quantum mechanical theories of the other forces (essentially
very small scale) -- the physical theories are non-compositional -- they
don't scale!
One of the real things functional programming has going for it is that the
basic model of computation underlying the means of structuring and
manipulating programs is compositional. That's why it is important to have a
technology like Scala resting atop the incumbent execution model (JVM) being
deployed on web-scale problems. Compositionality is the only way to tackle
applications at global scale.
/soapbox
Thanks for getting the fix to this problem in so quickly.
Best wishes,
--greg
On Tue, Jun 16, 2009 at 11:53 AM, Derek Chen-Becker
dchenbec...@gmail.com wrote:
Using multiple EMs was not something I had considered when I wrote this.
I think that I can modify the code to provide a __nameSalt def to
differentiate instances. Let me work on it and I'll have something soon.
Derek
On 6/16/09, Jean-Luc jlcane...@gmail.com wrote:
For your information, here is an extract of source code of RequestVarEM
:
Trait RequestVarEM extends ScalaEntityManager with ScalaEMFactory {
object emVar extends RequestVar[EntityManager](openEM()) { ... }
}
EntityManager is stored in the singleton emVar; so, all db access of
Model objects are made using the singleton emVar.
= trait RequestVarEM allow only one connection to a database within the
same HttpRequest context.
Jean-Luc
2009/6/15 Jean-Luc jlcane...@gmail.com
Hello,
I have two databases, db1 (a.k.a. Motorbike) and db2 (a.k.a. Motorway)
defined with RequestVarEM :
- object ModelDb1 extends LocalEMF(db1) with RequestVarEM //
Motorbike database
- object ModelDb2 extends LocalEMF(db2) with RequestVarEM //
Motorway database
I thought one could access to any databases independently from any
snippet as long as the correct Model object were used (ModelDb1 or
ModelDb2
for exemple) ; but when I access both databases from the same page, the
second database access issues a Named query not found exception.
I have two snippets, one to display a list of motorbike, another to
display a list of motorway :
- page1 :
ModelDb1.createNamedQuery[Motorbike](Motorbike.findAll).getResultList()
=
ok
- page2
: ModelDb2.createNamedQuery[Motorway](Motorway.findAll).getResultList()
=
ok
- page3 : calling from page 3 motorbike motorway snippets : Named
query not found: Motorway.findAll
- page4 : calling from page 4 motorway motorbike snippets : Named
query not found: Motorbike.findAll
- page3 changing the query of *Motorway* snippet :
-
ModelDb2.createNamedQuery[*Motorbike*](*Motorbike*.findAll).getResultList()
= it's ok and I do NOT have an exception !
I joined a sample application, ...
any idea about this issue ?
(bad use of LocalEMF in the application code ? issue
[Lift] Re: Cheap Hosting
Another option is http://prgmr.com/xen/ You can get as much RAM as Slicehost for only $8/mo (but slightly less storage and data transfer). The support will be much more barebones, though. --j On Mon, Jun 15, 2009 at 2:01 PM, Mark Lynn m...@sabado.com wrote: I want to thank everyone that replied on this. Derek's suggestion of GAE is intriguing and I am at least going to check it out - I'm a little weary of that persistence situation with GAE since I don't have any experience with JDO or JPA. However, if GAE does not work out, I like the Mosso approach suggested by Tim below. This app has very minimal bandwidth requirements so I suspect Mosso will be cheaper than Slicehost. Thanks again! Mark Lynn On Jun 15, 2009, at 9:50 AM, Tim Nelson wrote: You might want to also look into Mosso's Cloud Servers. They use Slicehosts' technology (Slicehost was purchased by rackspace, which owns mosso), but don't package the bandwidth in the price. If you have small bandwidth needs, it will be a little cheaper. Another alternative is mor.ph. It is a PaaS that has JavaEE as a choice. You just upload your WAR and off you go. I haven't tried this with a Lift app yet, but it should work. On Mon, Jun 15, 2009 at 8:28 AM, Jeremy Day jeremy@gmail.com wrote: Mark, It is my understanding (and this could be incorrect, of course) that you can do whatever you want on a Slicehost Slice. You can install whatever Java applications you like. You have total control. Jeremy On Mon, Jun 15, 2009 at 8:02 AM, Mark Lynn m...@sabado.com wrote: Thanks. That is certainly very reasonable and VPS hosting is definitely a possibility. I guess what I am asking is whether there is shared hosting in the Java realm where you can also install Scala and LIft? I'm assuming the answer is not yet, but I thought I would ask. Mark Lynn On Jun 14, 2009, at 11:56 PM, David Pollak wrote: Mark, You should be able to host a moderately trafficked site (400 unique visitors an hour) with a $20 slicehost.com account. Thanks, David On Sun, Jun 14, 2009 at 4:40 PM, Mark Lynn m...@sabado.com wrote: I have a web app that I am doing free for a charitable organization that is sensitive to hosting costs. I would like to make it my first Lift app since it is pretty straight-forward - simple database and will probably just use Mapper. Most of my previous experience is with Rails projects or projects that were hosted internally so I don't have much experience with java hosting services. Does anyone have a recommendation for an inexpensive hosting option where I can use scala/ lift? With Rails or PHP I can find stuff for as little as $5/mth. Mark Lynn -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Git some: http://github.com/dpp --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
Re: [scala] Re: [Lift] Programming in Scala #5, Lift Book #8, Beginning Scala #9
In addition to the Lift Workshop, I also co-taught a ten-week (1.5hrs/wk) course at Stanford on Scala. It was targeted at advanced undergrads and graduate students. Most were programming language enthusiasts, so the course focused more on the interesting parts of Scala from a programming language perspective, rather than a more practical here's-how-you-get-stuff-done course (like the Lift Workshop). --j On Tue, Jun 9, 2009 at 2:33 AM, David Pollak feeder.of.the.be...@gmail.comwrote: Luc, Jorge, Kaliya and I did a LiftWorkshop in November. We had 6 people at the workshop. We tried to pack in Scala and Lift all into a day... it didn't work. Jorge and I have done some review and we figure there's 3 days of Scala training and 2-3 days of Lift training that would be a minimum for folks to be able to go home and build Lift apps. The To Do example (see http://liftweb.net/docs/getting_started.html ) would be one of the days (we gave it about an hour during the workshop and that was not nearly enough.) Thanks, David On Tue, Jun 9, 2009 at 1:23 AM, Luc Duponcheel luc.duponch...@gmail.comwrote: here are some thoughts: - agreeing upon the *what* is probably easier than agreeing upon the * how* for example: which IDE to use (if any) during the labs [ Eclipse, Netbeans, ... ] . My experience is that the description of how to do labs should be independent of any tools (it does not make sense to explicitely state things like: in Netbeans go to this submenu and select that choice and ... ). - I think we should go for 'extreme course development' in the sense that changes can be incorporated quickly (any text based format that can (in a moderated way) be edited by many people is good (e.g. LaTeX, assuming the existence of templates)) [ maybe git would be a perfect candidate for doing version management ] Another advantage of using text based development is that consistency can be automated: for example, code excerpts in slides can be extracted programmatically from the code proper so that all changes to that code are automatically propagated [ and also propagated in the embedded slides of student guides ]. I have some LateX templates (and Scala code) to automate all this. [ I have to agree that there is much room for improvement of the look-and-feel (it has been some time since I played around with LaTeX, and I'm not a specialist of LaTeX's beamer package) ] - About the financial model: if it is joint work, then I do not think it makes much sense to ask companies like Sun (or Oracle) money for the * development* of the material. If they are willing to make the material part of their curriculum (which implies: visibility via their catalogs), then we can make money by *delivering* the material. Whether or not the material itself should be freely downoadable by anyone in the world is yet another matter. Again, maybe there should be some moderated group of people having access to the material. ... Luc On Tue, Jun 9, 2009 at 9:25 AM, Viktor Klang viktor.kl...@gmail.comwrote: On Tue, Jun 9, 2009 at 8:21 AM, Luc Duponcheel luc.duponch...@gmail.com wrote: Hi all, I attended the talk on Scala and the talk on Lift. Both excellent talks! [ I did not attend the talk on Actors (I was cycling on the other side of the Golden Gate Bridge (Mt Tamalpais)) ] ... Those talks act as 'teasers' to make developers 'eager to know more about Scala'. This is great! But, sometimes, I also have the impression that those talks 'preach for those that are already converted'. The point I want to make is the following: when talking to developers about Scala, I am almost always confronted with the fact that they still think it has a 'steep learning curve'. I tell them that 'once you have climbed the mountain, you can enjoy the view over the landscape' (cfr Mt Tamalpais). So, I really think there is this need for *hands on training*. Maybe some of you folks should try to convince Sun (or Oracle) Education to invest in training courses. Not a simple task indeed, but, worth the effort (helps Scala becoming mainstream). ps: I agree that I'm partially saying this out of pure opportunism (I'm delivering Java courses for Sun Education, and, of course, I would be the first one to deliver Scala courses). Awesome idea. Would be great to establish some kind of curriculum with joint teaching material to be able to offer courses worldwide. Luc On Mon, Jun 8, 2009 at 5:40 PM, David Pollak feeder.of.the.be...@gmail.com wrote: A big congratulations to the authors as well as the whole Scala community... Yet another proof point that 2009 is the year of Scala. Rock On! On Mon, Jun 8, 2009 at 7:34 AM, TylerWeir tyler.w...@gmail.comwrote: http://www.theserverside.com/news/thread.tss?thread_id=54862 Quote: Here are the top 10 selling books at the JavaOne
[Lift] Re: Switch to Scala 2.7.5 for 1.1 ?
In general I thought the plan for 1.1 was to compile against 2.8. If anything we might want a 1.0.1 against 2.7.5. --j On Wed, Jun 3, 2009 at 1:26 PM, Heiko Seeberger heiko.seeber...@googlemail.com wrote: Hi, I wonder if we should switch to Scala 2.7.5. I do not know whether the actor fixes are relevant as Lift has got its own actor library now. But for users of the Scala IDE for Eclipse (like me) it might be beneficial, because the Scala IDE ships with 2.7.5. Cheers Heiko -- My blog: heikoseeberger.name Follow me: twitter.com/hseeberger OSGi on Scala: www.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 liftweb@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] Re: JTA
I, too, would like to see Transactions be monadic.
--j
On Fri, May 29, 2009 at 3:54 PM, Meredith Gregory
lgreg.mered...@gmail.comwrote:
Jonas,
i applaud the effort. i agree with DPP sentiments regarding annotations.
That said, i feel pretty comfortable that transactions fit entirely in a
monadic context. Since LINQ demonstrates that query fits into monadic
context, and there's already at least one Scala implementation of
LINQhttp://github.com/szeiger/scala-query/tree/master,
might i suggest that you come up with a monadic presentation first and then
map the sugar to that. My guess is that the sugar will be informed by the
monadic presentation.
To be suggestive... think of a context with a Tx object, TxCtxt, as like an
Option widget. Then you do stuff inside a transaction via
for ( myTransactedWidget - TxCtxt if someCondition ) yield {
someOperationsThatNeedToBeTransacted }
If you implement flatMap, yada, on TxCtxt you can have fun with nested
transaction semantics. The point is that this should just work with a
LINQ-like presentation of query.
Best wishes,
--greg
On Fri, May 29, 2009 at 6:54 AM, Jonas Bonér jbo...@gmail.com wrote:
I'll go for closures. Much simpler and less intrusive into Lift.
The current impl is based on Atomikos and Hibernate, I'll start with
pushing that in and we can make it pluggable later.
For example for Hibernate one need to add a line to the hibernate
config to register the
org.hibernate.transaction.TransactionManagerLookup class in order to
make Hibernate aware of our TX manager.
Should I fork the github repo and submit patches or how do you guys work?
/Jonas
2009/5/29 Derek Chen-Becker dchenbec...@gmail.com:
I'd vote for closures. We use annotations for JPA because we have to,
but
IMHO closures provide a nicer semantic approach because they
syntactically
enclose the block where the action is occurring.
Derek
On Fri, May 29, 2009 at 7:44 AM, Jonas Bonér jbo...@gmail.com wrote:
No perf difference. The annotations are turned into the same exact
closures.
2009/5/29 Timothy Perrett timo...@getintheloop.eu:
Are there any performance implications considering closures vs
annotations?
Agreed that closures are more lift like however.
Cheers, Tim
On 29/05/2009 10:21, marius d. marius.dan...@gmail.com wrote:
I think that would be really good. But I'd rather not use
annotations.
Personally I find closures approach a much better fit here.
withTxRequired {
... // do transational stuff
}
Br's,
Marius
On May 29, 11:55 am, Jonas Bonér jbo...@gmail.com wrote:
Hi guys.
I have been talking with David Pollak the rest of the lift team
about
adding JTA to Lift. I have implemented that for a product written
in
Scala some time ago. Now some of that code is OSS
at:http://github.com/jboner/skalman/tree
We used using two different APIs.
1. Annotations (would require Lift to support proxied objects, e.g.
grab them from a factory):
@TransactionAttribute(REQUIRED)
def transactionalMethod = { ... }
2. Call-by-name:
withTxRequired {
... // do transational stuff
}
But I don't know what fits Lift and would like to know how you guys
would like to have JTA integrated.
At which level? Which APIs? Etc.
--
Jonas Bonér
twitter: @jboner
blog:http://jonasboner.com
work: http://crisp.se
work: http://scalablesolutions.se
code: http://github.com/jboner
--
Jonas Bonér
twitter: @jboner
blog:http://jonasboner.com
work: http://crisp.se
work: http://scalablesolutions.se
code: http://github.com/jboner
--
Jonas Bonér
twitter: @jboner
blog:http://jonasboner.com
work: http://crisp.se
work: http://scalablesolutions.se
code: http://github.com/jboner
--
L.G. Meredith
Managing Partner
Biosimilarity LLC
1219 NW 83rd St
Seattle, WA 98117
+1 206.650.3740
http://biosimilarity.blogspot.com
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[Lift] Re: **IMPORTANT** Lift 1.1-SNAPSHOT now compiled against Scala 2.7.4
I had nothing to do with it. David beat me to it. --j On Sat, Apr 25, 2009 at 11:34 AM, Timothy Perrett timo...@getintheloop.euwrote: Sweet! Well done Jorge / David for getting this out so quickly with the announcement of 2.7.4 --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: directives versus snippets
Huh? lift: snippet, surround, embed, ignore, comet, children, a, form, loc, and with-param are all built-in in liftTagProcessing. Yes, they're overrideable, but imo it'd be nicer if they were Just A Snippet, like, say, lift:msgs. lift:bind is just bad naming. it's not actually a directive, it's just what lift:surround looks for to bind at. should probably be called surround:bind or something with a different namespace. --j On Fri, Apr 10, 2009 at 1:26 PM, David Pollak feeder.of.the.be...@gmail.com wrote: Bob, They are actually the same thing. Lift's processing directives are simply built-in snippets. You can, if you dare, override their functionality. :-) Thanks, David On Fri, Apr 10, 2009 at 11:23 AM, bob rbpas...@gmail.com wrote: if I see lift:/, it could mean one of two things: a directive, e.g., lift:bind/ or lift:surround/ or shorthand for a snippet, eg lift:myClass represents lift:snippet type=MyClass i guess I would like to see these disambiguated a shorthand for snippets that doesn't overlap with the directive namespace. some possible solutions: 1. lift:bind/ would be the directive and lift:.bind/ would be the snippet. please don't get hung up on my use of dot. it is only an example, and not an actual suggestion. 2. lift:bind/ maps to a real class, not some internal code, much the way lift:msgs/ maps to net.liftweb.builtin.snippets.Msgs (thanks Jorge) 3. lift:bind is the directive, and liftsnippet:bind is the snippet comments? thanks, bob -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Git some: http://github.com/dpp --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Google App Engine
Google App Engine just released support for Java/Scala. I just sent in my laptop for repairs and won't get it back for a while. Anyone want to try Lift on GAE and report back? --j --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Newbie Scala syntax question re: parameterized types with bounds
On Fri, Apr 3, 2009 at 12:53 PM, David Pollak feeder.of.the.be...@gmail.com
wrote:
On Wed, Apr 1, 2009 at 8:06 PM, Kris Nuttycombe kris.nuttyco...@gmail.com
wrote:
Something that occurred to me recently along these lines - perhaps
someone can disabuse me of this notion. In Java, such recursive types
are necessary because you don't have abstract types. To refer to the
implementation type in the declaring class you have to use the
self-type.
But in Scala, what application would not be satisfied by:
trait Mapper {
type T : Mapper
}
class User extends Mapper {
type T = User
}
Is it just that the restriction on T is not sufficiently narrow?
No... becayse you can say:
class User extends Mapper {
type T = Address
}
I think this captures things, but I'm not 100% sure (and self-types weren't
around when I did Mapper):
trait Mapper[T : Mapper] {
self: T =
}
This can be expressed as:
trait Mapper {
type T : this.type : Mapper
}
class User extends Mapper {
type T = User
}
Actually, this might be sufficient:
trait Mapper {
type T = this.type
}
class User extends Mapper
Actually, that's too specific, because then:
object MetaUser extends User {
def create: T = new User // oops, MetaUser.T == MetaUser.type != User
}
But I think the first suggestion still works:
trait Mapper {
type T : this.type : Mapper
}
class User extends Mapper {
type T = User
}
object MetaUser extends User {
def create: T = new User
}
W, types are fun...
It might be a good idea to user these for Mapper* stuff, but Mapped* stuff
would maybe get too verbose with type T = ... syntax versus [T] syntax.
--j
Kris
On Fri, Mar 27, 2009 at 5:26 PM, Alex Boisvert boisv...@intalio.com
wrote:
Or said another way,
MappedTextarea[ T : Mapper[T] ]
declares a type parameter T and fixes the upper bound of the
MappedTextarea
type parameter to Mapper[T], which means that the type passed to
MappedTextArea must be a subtype of Mapper.
I, too, found this notation confusing at first and wished I could write
MappedTextarea[ : Mapper[T] ] directly but declaring the T before its
use
is necessary to disambiguate it from existing class names.
alex
On Fri, Mar 27, 2009 at 1:52 PM, Stefan Scott
stefanscottal...@gmail.com
wrote:
Hi -
Sorry to be asking a Scala syntax question here in the Lift group, but
I figured somebody here would know, since this Scala syntax occurs
quite a bit in the Lift source code.
When reading some of the Lift source I come across a particular Scala
idiom involving parameterized types with bounds, whose semantics I'm
unsure of.
For example:
class MappedTextarea[ T : Mapper[ T ] ] ( owner : T, maxLen: Int )
extends
MappedString[ T ]( owner, maxLen ) { ... }
What I'm unsure about here is the part where it says:
T : Mapper[ T ]
At first, this made no sense to me - how could a type T be a subtype
of type Mapper[ T ] ?
Then I guessed that maybe the two occurrences of T are unrelated to
each other - ie, class MappedTextarea is parameterized over a type T,
which must be a subtype of a type Mapper[ T ] -- where the second T is
actually in a separate scope so that it has nothing to do with the
first T.
Is that what this really means?
And, if that's really the case, then I guess the other occurrences of
T later in the text:
owner : T
MappedString[ T ]
are also referring to the first occurrence of T -- the type T which is
upper-bounded by type Mapper[ T ].
Finally, does this mean that the above code could also have been
written equivalently as follows:
class MappedTextarea[ T : Mapper[ U ] ] ( owner : T, maxLen: Int )
extends
MappedString[ T ]( owner, maxLen ) { ... }
using U instead of T for the type parameter that's in a separate
scope?
Thanks for any help.
- Stefan Scott
--
Lift, the simply functional web framework http://liftweb.net
Beginning Scala http://www.apress.com/book/view/1430219890
Follow me: http://twitter.com/dpp
Git some: http://github.com/dpp
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[Lift] Re: Advice on Ramping Up
Aside: I think the preferred abbreviation for Programming in Scala is PinS, not PiS. Just fyi, --j On Fri, Apr 3, 2009 at 4:15 PM, Timothy Perrett timo...@getintheloop.euwrote: My advice, if your generally / vaugly familiar with Scala from reading PiS (that truly is a very unfortunate acronym!) just dive into making a lift app, then go from there. One of the best things about Lift is the community - if you have questions, chances are its either already in the group archive from one of our many debates, or in the lift book, or if not, just ask on the mailing list and someone will no doubt help you right quick! Good luck! Tim On 03/04/2009 23:01, Charles F. Munat c...@munat.com wrote: I'd suggest that you start working in Lift, then when you encounter something that doesn't make sense to you, refer to the PiS book (unfortunate acronym). It helps if you have the PDF version because you can search. The index is OK, but often insufficient. This is the approach I used to get started, though eventually I went back and read most of the book sequentially (I still have a couple of chapters to go). Take a look also at DPP's book and the online Lift book, both easily searchable. If you want to jump ahead in the book, I'd recommend the following: 15: Case Classes and Pattern Matching 16: Working with Lists 23: For Expressions Revisited Lists, for expressions, case classes, and pattern matching are used *all over the place* in Lift. You can't be too familiar with these. Then maybe: 19: Type Parameterization 21: Implicit Conversions and Parameters You don't need to understand those thoroughly, but having some familiarity with them will help with debugging and understanding what the heck is going on. If you have time, you could also read the following to fill in a few gaps: 22: Implementing Lists 26: Working with XML And if you're going to use Comet, you should probably read: 30: Actors and Concurrency But again, you can dive in and then reference these chapters as necessary. Chas. lmorroni wrote: Hi, I am a Java programmer that is interested in learning Lift. I have just finished the first six chapters of Programming in Scala. I wonder what people's opinions are on how much of this book I need to read before diving into Lift. I attempted to dive into Lift without reading anything on Scala and that worked great until I wanted to start reviewing the Lift libraries :) Maybe there are some chapters in this book that I can skip? I think the book is really well written and I have followed everything so far. I just would rather get rolling on Lift sooner rather than later. Larry --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Proposed URL Shortening widget
What about easily turning any lift app into a url shortener service?
Wouldn't be too hard...
Granted, some services (bit.ly) add statistics, visualization, conversation
tracking, etc. which aren't just url shortening.
--j
On Thu, Apr 2, 2009 at 12:13 PM, Tim Perrett timo...@getintheloop.euwrote:
Guys,
I've been contemplating doing this for a while and am now finding
myself with a bunch of free time tomorrow and a need to write some
code.
So, I want to make a widget that shortens URL's in an extendable
way... Im thinking of having something like:
trait URLReductionProvider { ... }
object TinyURL extends URLReductionProvider
object IsGd extends URLReductionProvider
object BitLy extends URLReductionProvider
You get the general idea...
So, im thinking of implementing the actual URL fetching stuff as a
partial function so that users could do:
def reductionResult = {
case Full(result) = // result is the URL, insert into database etc
case _ = // something went wrong
}
My question is however, if i make this actor based, could someone
implement it so rather than writing there URL to database in a
separate thread to the main one, would it be possible for them to say,
use a JsCmd and return that to update the browser? Im guessing not
unless it was a CometActor right.
This then got me thinking, do you guys thing this is worth doing actor
based, or is it just ok to make a blocking call to the provider?
(tinyurl or is.gd etc)
Cheers, Tim
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[Lift] Re: The Lift 1.1 list
I propose we migrate to Joda Time for 1.1. In particular, I propose that Record ditch Java Date/Time entirely in favor of Joda Time. Since migrating from Mapper to Record will involve a port anyway, what's one more breaking change among friends? Lift's other uses of Date/Time should be deprecated in favor of Joda Time alternatives. Mapper should continue to support Date/Time. --j On Wed, Apr 1, 2009 at 9:11 AM, David Pollak feeder.of.the.be...@gmail.comwrote: Folks, I think we've got our Lift 1.1 list. If anyone has anything to add, please speak up now. - Improved documentation: better VScalaDoc coverage as well as better tutorial and cook-book documentation. - Improved J2EE support including JTA and Portlets. - Finish Record/Field code with backing store including JDBC, JPA and Goat Rodeo (what's Goat Rodeo? http://goatrodeo.org) - Improved client-side JavaScript support and better JavaScript abstractions. - Client/Server data synchronization (integrated with Record/Field) - Improved support for REST. - Improved performance including caching templates when running in production mode. - OSGi support. - Improved testing framework and better testing support when running in test mode. - Implement Servlet 3.0 support. - HTML 5 and Web Sockets support and integration with Kaazing's Web Sockets server. Also, sensing which browser is making the request and performing optimizations based on that browser's characteristics (specifically, Chrome and Firefox 3.1 support) We will have bug-fix releases of 1.0 along the way and we'll have a release off the 1.0 branch when Scala 2.8 is released. Feedback is welcome in the next 3 days. 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 Git some: http://github.com/dpp --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: The Lift 1.1 list
I also propose we start thinking seriously about 2.8. In particular, 2.8 will probably add support for named and default arguments. This places extra burdens on library and framework designers, as method -argument- names will be just as much a part of a library/framework's API as class, method, and field names. It also means that decisions about the order of arguments, whether arguments have a default, and whether methods are overloaded need to be made or revisited. For our 1.0 branch, this means cleaning up argument names before releasing a 2.8 version. Order of arguments should not be changed, nor should we remove any overloaded method versions. For our 1.1 branch, I propose we do a holistic review of API decisions with regards to arguments, argument names, argument order, defaults, and overloading. --j On Wed, Apr 1, 2009 at 9:11 AM, David Pollak feeder.of.the.be...@gmail.comwrote: Folks, I think we've got our Lift 1.1 list. If anyone has anything to add, please speak up now. - Improved documentation: better VScalaDoc coverage as well as better tutorial and cook-book documentation. - Improved J2EE support including JTA and Portlets. - Finish Record/Field code with backing store including JDBC, JPA and Goat Rodeo (what's Goat Rodeo? http://goatrodeo.org) - Improved client-side JavaScript support and better JavaScript abstractions. - Client/Server data synchronization (integrated with Record/Field) - Improved support for REST. - Improved performance including caching templates when running in production mode. - OSGi support. - Improved testing framework and better testing support when running in test mode. - Implement Servlet 3.0 support. - HTML 5 and Web Sockets support and integration with Kaazing's Web Sockets server. Also, sensing which browser is making the request and performing optimizations based on that browser's characteristics (specifically, Chrome and Firefox 3.1 support) We will have bug-fix releases of 1.0 along the way and we'll have a release off the 1.0 branch when Scala 2.8 is released. Feedback is welcome in the next 3 days. 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 Git some: http://github.com/dpp --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: MappedDateTime - Do we have a Date? Or is it a timestamp?
I was on IRC trying to help Clemens with this. The name (MappedDateTime), targetSQLType (java.sql.Types.TIMESTAMP), and type (extends MappedField[java.util.Date, _]) of this class suggests millisecond precision (java.sql.Timestamp and java.util.Date have millisecond precision). However, methods jdbcFriendly and real_convertToJDBCFriendly use java.sql.Date, which has only day precision. If the intent is day precision, then calling the class DateTime is probably misleading. If the intent is millisecond precision, then we have a bug. rant Which brings up the larger issue of the brokennes of the Java Date/Time API. Java 7 will hopefully be getting a newer/better one, but for those of us stuck on Java 5/6, Joda Time is much preferable to the native Date/Time API. It more clearly represents foundational concepts like instants (March 31, 2009 at 12:15.000pm UTC), partials (March 3 or 7:15pm), intervals (the space between two instants), durations (1000 milliseconds), periods (1 month), and chronologies (calendar systems). It's also completely immutable (oh, you didn't know java.util.Calendar isn't thread-safe? you're lucky to have never had to track down that bug). /rant Sigh... it's probably too big of a breaking change to rip out Java Date/Time from Mapper and Helpers and replace it with Joda Time, but one can dream... --j On Tue, Mar 31, 2009 at 11:58 AM, Clemens Oertel clemens.oer...@gmail.comwrote: While trying to figure out why my MappedDateTime fields get stored in the DB with all the time info set to 0, I noticed the following: MappedDateTime (v. 1.0) claims to be a TimeStamp: def targetSQLType = Types.TIMESTAMP. However, it uses java.sql.Date for its JDBC- friendly converted version, not java.sql.TimeStamp. If I read the java.sql.Date documentation correctly, java.sql.Date does set all time information to 0, since the SQL DATE type only stores dates, by no times. Any comment whether this might have something to do with me losing my time would be appreciated. Best, Clemens --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Decoupling Lifts Template System
I hadn't thought about localization. That makes things a bit trickier. Part of my goal was to make methods that allow you to easily access template functionality programmatically. For example: def lift_surround(template: Box[String], at: Box[String])(child: NodeSeq): NodeSeq def lift_snippet(stype: String)(child: NodeSeq): NodeSeq def lift_embed(what: String): NodeSeq def lift_comet(ctype: String, name: String)(child: NodeSeq): NodeSeq Another goal was to be able to use templates without the rest of Lift. I really just wanted the XML munging (templates, snippets, etc). Didn't think too much about localization, views, etc. In a lot of ways all this stuff is either a NodeSeq or a NodeSeq = NodeSeq. I feel like there's some nice abstraction that would make everything pretty but somehow I'm missing it... My lowest priority would be to make template systems pluggable (i.e., use some other template system with Lift). I have no desire to use this personally, but part of the work involved for the first two goals means extricating Lift's templates from the core of Lift. Making the template system pluggable might just fall out of that. --j On Thu, Mar 19, 2009 at 3:39 PM, TylerWeir tyler.w...@gmail.com wrote: I thought Jorge was talking about this. Maybe he'll jump in. On Mar 19, 3:58 pm, David Pollak feeder.of.the.be...@gmail.com wrote: It would be very tough because the templating system is all about the current state which is all about S and LiftRules. On Mar 19, 2009 12:41 PM, Tim Perrett timo...@getintheloop.eu wrote: Guys, What would it take to decouple Lifts template system? Specifically, im interested in reusing a bunch of the localization and view componentry. I know that wa back there was talk of doing this. For instance, lets say that you wanted filesystem view storage, rather than views being held in the WAR... right now, you have to rebuild the wheel to keep the lift functionality (like selecting templates based on locale ISO code) as lift currently only looks for resources based on the context root. Anyway... what are people's thoughts? I appreciate this is a fairly big task, but anyone want to bang it out for 1.1? Cheers, Tim --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Lift Web, why no download of a zipped archive on the website?
If you want the sources, GitHub makes them available here: http://github.com/dpp/liftweb/downloads If you want the binaries... We'll, you'll want to use Maven anyway. Just get that, really. --j On Thu, Mar 19, 2009 at 1:34 PM, BerlinBrown berlin.br...@gmail.com wrote: http://liftweb.net/download.html Call me old fashion, but why can't there simply be a download on the download page? --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] FieldType and ForeignType
Anyone know what these two types: type FieldType : KeyType type ForeignType : KeyedMapper[KeyType, Other] in trait MappedForeignKey are doing? They're never fully defined and never used, but somehow were causing compile problems in someone's code. If they're useless, can they be axed? --j --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: FieldType and ForeignType
And if they're useful, can subclasses of MappedForeignKey define them more exactly? Errors looked like this: [WARNING] C:\workspace\liftapp\src\main\scala\com\liftworkshop\model\ToDo.scala: 16: error: object creation impossible, since type ForeignType in trait MappedFor eignKey with bounds : Nothing : net.liftweb.mapper.KeyedMapper[Long,my.liftapp .model.User] is not defined [WARNING] object owner extends MappedLongForeignKey( this , User ) [WARNING] ^ [WARNING] C:\workspace\liftapp\src\main\scala\com\liftworkshop\model\ToDo.scala: 16: error: object creation impossible, since type FieldType in trait MappedForei gnKey with bounds : Nothing : Long is not defined [WARNING] object owner extends MappedLongForeignKey( this , User ) [WARNING] ^ --j On Tue, Mar 17, 2009 at 5:42 PM, Jorge Ortiz jorge.or...@gmail.com wrote: Anyone know what these two types: type FieldType : KeyType type ForeignType : KeyedMapper[KeyType, Other] in trait MappedForeignKey are doing? They're never fully defined and never used, but somehow were causing compile problems in someone's code. If they're useless, can they be axed? --j --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: FieldType and ForeignType
Argh. Good call. I don't know as I was debugging through IRC, but it was probably 2.7.2 since he was using the todo example site from the Lift workshop. And I told him to upgrade to Lift 1.0. That's going to cause problems. Oh well. --j On Tue, Mar 17, 2009 at 8:23 PM, David Pollak feeder.of.the.be...@gmail.com wrote: What version of Scala? On Tue, Mar 17, 2009 at 5:45 PM, Jorge Ortiz jorge.or...@gmail.comwrote: And if they're useful, can subclasses of MappedForeignKey define them more exactly? Errors looked like this: [WARNING] C:\workspace\liftapp\src\main\scala\com\liftworkshop\model\ToDo.scala: 16: error: object creation impossible, since type ForeignType in trait MappedFor eignKey with bounds : Nothing : net.liftweb.mapper.KeyedMapper[Long,my.liftapp .model.User] is not defined [WARNING] object owner extends MappedLongForeignKey( this , User ) [WARNING] ^ [WARNING] C:\workspace\liftapp\src\main\scala\com\liftworkshop\model\ToDo.scala: 16: error: object creation impossible, since type FieldType in trait MappedForei gnKey with bounds : Nothing : Long is not defined [WARNING] object owner extends MappedLongForeignKey( this , User ) [WARNING] ^ --j On Tue, Mar 17, 2009 at 5:42 PM, Jorge Ortiz jorge.or...@gmail.comwrote: Anyone know what these two types: type FieldType : KeyType type ForeignType : KeyedMapper[KeyType, Other] in trait MappedForeignKey are doing? They're never fully defined and never used, but somehow were causing compile problems in someone's code. If they're useless, can they be axed? --j -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Git some: http://github.com/dpp --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Custom Boot Class
I get the same error, unfortunately.
--j
On Mon, Mar 16, 2009 at 4:48 AM, Sergey Andreev andser...@gmail.com wrote:
Jorge,
I am using a custom Boot class and it works just fine. I believe that if
you create a Brat.scala and put your class there, it will solve the problem
Regards,
Sergey
On Mon, Mar 16, 2009 at 1:31 PM, Jorge Ortiz jorge.or...@gmail.comwrote:
Folks,
I'm trying to specify a custom Boot class, as per Chapter 3 of the Lift
Book. To my web.xml I've added:
context-param
param-namebootloader/param-name
param-valuebootstrap.liftweb.Brat/param-value
/context-param
and in Boot.scala I've commented out the regular Boot class and added a
Brat class with identical implementation, except it extends Bootable.
class Brat extends Bootable { ... }
Unfortunately, I'm getting a:
ERROR - Failed to Boot
java.lang.ClassNotFoundException: bootstrap.liftweb.Boot
Attached is the zipped project.
Thanks,
--j
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[Lift] Re: Custom Boot Class
Thanks Derek!
--j
On Mon, Mar 16, 2009 at 8:33 AM, Derek Chen-Becker dchenbec...@gmail.comwrote:
Just confirmed. Changing you web.xml to:
?xml version=1.0 encoding=ISO-8859-1?
!DOCTYPE web-app
PUBLIC -//Sun Microsystems, Inc.//DTD Web Application 2.3//EN
http://java.sun.com/dtd/web-app_2_3.dtd;
web-app
filter
filter-nameLiftFilter/filter-name
display-nameLift Filter/display-name
descriptionThe Filter that intercepts lift calls/description
filter-classnet.liftweb.http.LiftFilter/filter-class
init-param
param-namebootloader/param-name
param-valuebootstrap.liftweb.Brat/param-value
/init-param
/filter
filter-mapping
filter-nameLiftFilter/filter-name
url-pattern/*/url-pattern
/filter-mapping
/web-app
Fixes it. I'll fix the book.
Derek
On Mon, Mar 16, 2009 at 9:19 AM, Derek Chen-Becker
dchenbec...@gmail.comwrote:
I think we might have an error in the book. The example you give uses
context-param, but I think it needs to be an init-param within the filter
portion of the web.xml.
Derek
On Mon, Mar 16, 2009 at 9:04 AM, Viktor Klang viktor.kl...@gmail.comwrote:
No, it was working when we switched to the filter. :/
On Mon, Mar 16, 2009 at 2:58 PM, Derek Chen-Becker
dchenbec...@gmail.com wrote:
I wonder if this is something that broke when we moved to a Filter...
Derek
On Mon, Mar 16, 2009 at 7:02 AM, Jorge Ortiz jorge.or...@gmail.comwrote:
I get the same error, unfortunately.
--j
On Mon, Mar 16, 2009 at 4:48 AM, Sergey Andreev
andser...@gmail.comwrote:
Jorge,
I am using a custom Boot class and it works just fine. I believe that
if you create a Brat.scala and put your class there, it will solve the
problem
Regards,
Sergey
On Mon, Mar 16, 2009 at 1:31 PM, Jorge Ortiz
jorge.or...@gmail.comwrote:
Folks,
I'm trying to specify a custom Boot class, as per Chapter 3 of the
Lift Book. To my web.xml I've added:
context-param
param-namebootloader/param-name
param-valuebootstrap.liftweb.Brat/param-value
/context-param
and in Boot.scala I've commented out the regular Boot class and added
a Brat class with identical implementation, except it extends Bootable.
class Brat extends Bootable { ... }
Unfortunately, I'm getting a:
ERROR - Failed to Boot
java.lang.ClassNotFoundException: bootstrap.liftweb.Boot
Attached is the zipped project.
Thanks,
--j
--
Viktor Klang
Senior Systems Analyst
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[Lift] Re: Why does HelloWorld index.html contain a snippet rather than a complete XHTML page?
Yes, if index.xhtml is a compliant XML (preferably XHTML) document, it will just be served up as-is. The lift:... / tags define transformations that are applied to your document before it is served up. --j On Fri, Mar 13, 2009 at 3:40 PM, Marc Boschma marc+lift...@boschma.cxmarc%2blift...@boschma.cx wrote: Hi Mal, That aspect of the lift templating approach also warped my head for a while, having seen so many examples of the opposite approach (PHP, JSP, etc)... There is a certain part of me that still is unsettled about it, but I can see the advantages of it. Marc Ps. can the files such as index.html in the examples be full XML compliant documents? On 13/03/2009, at 3:30 PM, mal3 wrote: Why does HelloWorld index.html contain a snippet rather than a complete XHTML page? When I first saw the HelloWorld example I thought there must be a mistake, because the index.html file contains a snippet, while default.html contains what looked more like a complete XHTML page. Why doesn't lift initially reference a complete XHTML page and then pull in the snippet(s)? Is it to make it difficult/impossible for logic to creep into the view? Mal. --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Record and JSON
Hey Folks, I wrote a Json AST and parser/serializer for unrelated reasons yesterday. This could be the basis of a Record -- Json tool. --j On Wed, Mar 4, 2009 at 9:11 AM, David Pollak feeder.of.the.be...@gmail.comwrote: On Wed, Mar 4, 2009 at 9:08 AM, Marius marius.dan...@gmail.com wrote: Hi, I was thinking that it might be useful to be able to obtain a JSON representation of a Record and also from a JSON construct to create a Record. Record defines now: def suplementalJs(ob: Box[KeyObfuscator]): List[(String, JsExp)] = Nil but that's not very intuitive ... not to mention not implemented yet. Thoughts ? I've been needing bi-directional JSON support to allow for the creation of complex JSON data structures. So, my thought is I have a need, but not a solution. :-) Br's, Marius -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Git some: http://github.com/dpp --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: ORM Framework
I've used Mapper on desktop apps that don't do http. You lose a lot of the features but it's still usable and sometimes even convenient. YMMV, --j On Sun, Feb 22, 2009 at 4:23 PM, David Pollak feeder.of.the.be...@gmail.com wrote: On Sun, Feb 22, 2009 at 3:45 PM, Paulo Cheque pauloche...@gmail.comwrote: Thanks by the fast answer David, and congratulations by the good work! I think this relationship is very strange (domain + http), is there any idea to change this in the future? Lift's Mapper stuff relies of classes in the HTTP framework for access control, form generation, etc. It would significantly detract from the Mapper classes to remove this kind of functionality. Plus, Lift's OR Mapper stuff is nice for simple projects (like ActiveRecord), it's not meant to replace the functionality of a JPA solution (caching, etc.) So, no, there's no plan to remove the dependency between mapper and webkit. Thanks in advance again []s Paulo On Sun, Feb 22, 2009 at 8:24 PM, David Pollak feeder.of.the.be...@gmail.com wrote: Paulo, Lift's Mapper depends on the HTTP framework. I would suggest using JPA as a stand-alone alternative. Thanks, David On Sun, Feb 22, 2009 at 11:04 AM, Paulo Cheque pauloche...@gmail.com wrote: Like GORM in Grails, it is possible to use the ORM framework of Lift separately?? There is any tutorial or documentation avaiable? Thanks in advance []s Paulo -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Git some: http://github.com/dpp -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Git some: http://github.com/dpp --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Weird Mapper type error
Committed the fix to lift-archetype-basic (to set a good example)
--j
On Thu, Feb 19, 2009 at 9:10 AM, David Pollak feeder.of.the.be...@gmail.com
wrote:
On Thu, Feb 19, 2009 at 6:49 AM, Derek Chen-Becker
dchenbec...@gmail.comwrote:
Shouldn't it be
override def fieldOrder: List[BaseOwnedMappedField[Transaction]] = txtime
:: amount :: summary :: Nil
I did try that and it gave the same error. In any case, List(...) works.
This is because the :: (cons) operation does inference on each cons
element, rather than the List as a whole. At some point, it gets confused.
Please use List().
Derek
On Thu, Feb 19, 2009 at 2:35 AM, Jorge Ortiz jorge.or...@gmail.comwrote:
Yup, this is a type inference bug. If I'm not mistaken then
override def fieldOrder: BaseOwnedMappedField[Transaction] = txtime
:: amount :: summary :: Nil
should also work.
In any case, I'd probably just stick with the List(...) syntax.
--j
On Wed, Feb 18, 2009 at 10:23 PM, Derek Chen-Becker
dchenbec...@gmail.com wrote:
0.11-SNAPSHOT, and I'm writing up some example code for the book. I have
the following class/object:
class Transaction extends LongKeyedMapper[Transaction] with IdPK {
def getSingleton = Transaction
object account extends MappedLongForeignKey(this, Account) {
override def dbIndexed_? = true
}
object txtime extends MappedDateTime(this)
// The amount has up to 16 digits and 2 decimal places
object amount extends MappedDecimal(this, MathContext.DECIMAL64, 2)
// Holds a brief description of the transaction
object summary extends MappedString(this, 100)
object notes extends MappedTextarea(this, 1000) {
override def textareaCols = 60
override def textareaRows = 8
}
def tags = TransactionTag.findAll(By(TransactionTag.transaction,
this.id))
}
object Transaction extends Transaction with
LongKeyedMetaMapper[Transaction] {
override def fieldOrder = txtime :: amount :: summary :: Nil
}
The compile error I get is:
[WARNING]
/home/software/pocketchangeapp/PocketChange/src/main/scala/com/pocketchangeapp/model/Transaction.scala:35:
error: inferred type arguments [net.liftweb.mapper.MappedField[_ : _1 with
java.util.Date : java.io.Serializable,
com.pocketchangeapp.model.Transaction]] do not conform to method ::'s type
parameter bounds [B : net.liftweb.mapper.MappedField[_ : String with
BigDecimal : java.io.Serializable,
com.pocketchangeapp.model.Transaction]{def jdbcFriendly(String):
java.io.Serializable}]
[WARNING] override def fieldOrder = txtime :: amount :: summary :: Nil
[WARNING]^
[WARNING] one error found
If I remove the summary element from the fieldOrder list then it
compiles fine. Likewise, if I remove txtime and put summary and notes into
the list it compiles fine. I'm trying to get my head around all of the
nested type bounds in the error message but I'm not seeing anything obvious
other than the weird String with BigDecimal bound. I tried using an
explicit type for fieldOrder but that doesn't work either.
I finally tried changing fieldOrder to:
override def fieldOrder = List(txtime, amount, summary, notes)
That compiles fine. Have I found a type inferencing bug, or have I just
done something incredibly stupid somewhere? Feel free to critique the
class,
too.
Thanks,
Derek
--
Lift, the simply functional web framework http://liftweb.net
Beginning Scala http://www.apress.com/book/view/1430219890
Follow me: http://twitter.com/dpp
Git some: http://github.com/dpp
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[Lift] Re: Fwd: [jquery-dev] Re: Namespace failure
This might be a bit of a pain to deal with, but something like: tag class=lift-gc lift-gc-[uuid] / Of course, you'd want to append to the 'class' attribute, not replace it entirely. --j On Mon, Feb 16, 2009 at 1:49 PM, David Pollak feeder.of.the.be...@gmail.com wrote: what would the raw XHTML look like? Also, we can't rely on jQuery to scrape because we have to support other libraries (e.g., YUI) without jQuery. On Mon, Feb 16, 2009 at 1:45 PM, Viktor Klang viktor.kl...@gmail.comwrote: How about adding a class-attribute called gc to everything that's supposedly collectible? Then doing a scrape using jQuery(.gc) would be just as feasible. Would it solve the problem or can it be extended to solve it fully? On Mon, Feb 16, 2009 at 10:37 PM, David Pollak feeder.of.the.be...@gmail.com wrote: On Mon, Feb 16, 2009 at 1:36 PM, Jorge Ortiz jorge.or...@gmail.comwrote: Can lift:gc be renamed lift_gc until the bug is addressed? lift_gc is not a valid attribute in XHTML as far as I know, so browsers would reject any element containing that attribute. :-( On Mon, Feb 16, 2009 at 9:20 AM, David Pollak feeder.of.the.be...@gmail.com wrote: On Mon, Feb 16, 2009 at 9:04 AM, Tim Perrett he...@timperrett.comwrote: What's the impact overall? The impact is: use innerHTML directly rather than going through jQuery's HTML re-writing. Is this a result of upgrade to JQuery 1.3.1? No. This is a latent Firefox bug and has to do with how jQuery sanitizes HTML. The problem existed in prior versions of jQuery, but is now an issue because of the lift:gc stuff. Thanks, Tim On Feb 16, 4:51 pm, David Pollak feeder.of.the.be...@gmail.com wrote: Folks, It turns out that there are issues with jQuery's methods that insert/replace HTML and using XHTML on Firefox. Sigh. We should be aware of this. using $(...).html(stuff) will likely fail if any of the elements in stuff have namespaces. Sorry. David -- Forwarded message -- From: John Resig jere...@gmail.com Date: Sun, Feb 15, 2009 at 8:31 PM Subject: [jquery-dev] Re: Namespace failure To: jquery-...@googlegroups.com Anko - You're welcome to file a bug on XHTML support - let me know when you do. I have it penciled in the Roadmap for jQuery 1.4 - but it's going to require a lot of work (basic things like innerHTML aren't guaranteed to work, for example) - not to mention that things like attributes and expandos are handled very differently. I took some very basic steps of converting our test suite to run under the proper mimetype and wasn't terribly pleased with the result (lots of failures). I'll definitely revisit it at some point, though. Right now the only component guaranteed I'm sure that passes is the selector engine. I'd like to have 100% passing in all components for 1.4. http://dev.jquery.com/browser/trunk/jquery/test/xhtml.php --John On Sun, Feb 15, 2009 at 9:24 PM, Anko Painting anko@gmail.com wrote: Is there a ticket associated with this bug? I'm dealing with the same issue myself. It's frustrating because i need to serve as application/xhtml+xml so that I can put svg on the page. On Feb 14, 12:52 am, John Resig jere...@gmail.com wrote: Correct - you have to do it with the mimetype - which forces it in to the XML mode where everything becomes 'fun'. --John On Fri, Feb 13, 2009 at 9:37 AM, David Zhou da...@nodnod.net wrote: http://media.nodnod.net/test.htmlworksfor me. Is it because I'm not serving the page as application/xhtml+xml? -- dz On Fri, Feb 13, 2009 at 9:31 AM, Dave Methvin dave.meth...@gmail.com wrote: Me too. Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.6) Gecko/ 2009011913 Firefox/3.0.6 (.NET CLR 3.5.30729) -- Lift, the simply functional web frameworkhttp://liftweb.net Beginning Scalahttp://www.apress.com/book/view/1430219890 Follow me:http://twitter.com/dpp Git some:http://github.com/dpp -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Git some: http://github.com/dpp -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Git some: http://github.com/dpp -- Viktor Klang Senior Systems Analyst -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Git some: http://github.com/dpp --~--~-~--~~~---~--~~ 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
[Lift] Re: IMPORTANT: Library Upgrades
You're right, I completely forgot about Blueprint and YUI. I'll get those right away. Although it seems like the latest version of Blueprint still has issues with Opera, IE 6, and IE 5.5 (!!!). See: http://wiki.github.com/joshuaclayton/blueprint-css/browser-compatibility-list --j On Thu, Feb 12, 2009 at 11:00 AM, Joachim A. wallaby.po...@googlemail.comwrote: Jorge, thanks a lot for that (I especially like the JQuery 1.3.1 update). Is it possible to update to the latest blueprint css version? 0.8 was released 2009-02-06. I noticed some type/font problem in Opera with the version shipped with Lift. Joachim I've upgraded the dependencies for all of the Lift components and sample projects. I used the latest backward-compatible version that was available on public Maven repositories. (See below for the complete list.) PLEASE CHECK YOUR APPS to make sure nothing breaks. You only have a couple of weeks to get bug reports in before our major 1.0 release. --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: IMPORTANT: Library Upgrades
Ok, two more upgrades. Do note that Blueprint changed it's directory layout. If you're using the CSS.Blueprint / snippet you should be fine though. Blueprint CSS 0.6 - 0.8 YUI 2.5.1 - 2.6.0 --j On Thu, Feb 12, 2009 at 11:58 AM, Jorge Ortiz jorge.or...@gmail.com wrote: You're right, I completely forgot about Blueprint and YUI. I'll get those right away. Although it seems like the latest version of Blueprint still has issues with Opera, IE 6, and IE 5.5 (!!!). See: http://wiki.github.com/joshuaclayton/blueprint-css/browser-compatibility-list --j On Thu, Feb 12, 2009 at 11:00 AM, Joachim A. wallaby.po...@googlemail.com wrote: Jorge, thanks a lot for that (I especially like the JQuery 1.3.1 update). Is it possible to update to the latest blueprint css version? 0.8 was released 2009-02-06. I noticed some type/font problem in Opera with the version shipped with Lift. Joachim I've upgraded the dependencies for all of the Lift components and sample projects. I used the latest backward-compatible version that was available on public Maven repositories. (See below for the complete list.) PLEASE CHECK YOUR APPS to make sure nothing breaks. You only have a couple of weeks to get bug reports in before our major 1.0 release. --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Using Quaere in Scala
You may want to look at this http://szeiger.de/blog/2008/12/21/a-type-safe-database-query-dsl-for-scala/ --j On Thu, Feb 5, 2009 at 11:21 AM, Meredith Gregory lgreg.mered...@gmail.comwrote: Scalads and lasses and Lifted, Does anyone have any experience with using Quaere under Scala? In particular, i'm wondering if anyone has already done implementations for flatMap, etc? This would seem a quick and relatively painless way to get type safety on top of a nearly LINQ implementation that lacks some type safety. Best wishes, --greg -- L.G. Meredith Managing Partner Biosimilarity LLC 806 55th St NE Seattle, WA 98105 +1 206.650.3740 http://biosimilarity.blogspot.com --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Fwd: [scala] Jane Street Summer Program
If you're a student, Jane Street Capital can give you money to work on functional programming for a summer... --j -- Forwarded message -- From: James Iry james...@gmail.com Date: Mon, Feb 2, 2009 at 9:36 AM Subject: [scala] Jane Street Summer Program To: Scala list sc...@listes.epfl.ch This caught my eye and might be interesting to some Scalars out there. This year they aren't just focusing on OCaml. = The Jane Street Summer Project is aimed at encouraging growth in the functional programming community by funding students over the summer to work on open-source projects in various functional programming languages (with a focus on our favorite language, OCaml). We do that by funding students and faculty to work together over the summer to create software that makes it easier for people who are using functional languages as an ends rather than a means. The JSSP is funded by Jane Street Capital http://janestreet.com/. We make extensive use of OCaml at Jane Street http://ocaml.janestreet.com/, and it's in our interest to see the FP community thrive. Plus, we think it will be fun. For more detailed information, check out the faq! http://ocaml.janestreet.com/?q=node/57 --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: JPA is killing me. Enumeration hell.
I don't really know much about JPA, but just a quick observation on the code
you posted:
Your code has line:
abstract class EnumvType(val et: Enumeration with EnumTrait) extends
UserType {
whereas JPA Demo has line:
abstract class EnumvType(val et: Enumeration with Enumv) extends UserType
{
I don't know what your EnumTrait is, or whether it might be causing the
problem, but it's worth noting.
One thing I can do is release a version of 0.10 that compiles against Scala
2.7.2 and rolls back the minor changes made to Lift to compile against
2.7.2. But I don't know how David et al feel about this.
--j
On Thu, Jan 22, 2009 at 3:16 PM, Charles F. Munat c...@munat.com wrote:
I have an entity thus:
@Entity
@Table{val name = cocktails}
class Cocktail extends BaseEntity {
@Id
@GeneratedValue{val strategy = GenerationType.AUTO}
var id : Long = _
var name : String =
var description : String =
var ingredients : String =
@Column{val name = file_name}
var fileName : String =
@Column{val name = is_archived}
var isArchived : Boolean = false
@Type{val `type` = com.xxx.model.CocktailGroupType}
@Column{val name=cocktail_group}
var cocktailGroup: CocktailGroup.Value = CocktailGroup.Originals
}
Which uses this enumeration:
object CocktailGroup extends Enumeration with Enumv {
val Originals = Value(Originals)
val Contemporaries = Value(Contemporaries)
val Classics = Value(Classics)
val Others = Value(Others)
}
class CocktailGroupType extends EnumvType(CocktailGroup) {}
Which is queried thus in orm.xml:
named-query name=findCocktailsByGroup
query![CDATA[from Cocktail c
where c.isArchived = false
and c.cocktailGroup = :cocktailGroup
order by c.name]]/query
/named-query
And called from CocktailOps.scala:
120: val cocktails = Model.createNamedQuery[Cocktail](
findCocktailsByGroup,
cocktailGroup - Originals).findAll
Using Enumv:
trait Enumv {
this: Enumeration =
private var nameDescriptionMap =
scala.collection.mutable.Map[String, String]()
def Value(name: String, desc: String) : Value = {
nameDescriptionMap += (name - desc)
new Val(name)
}
def getDescriptionOrName(ev: this.Value) = {
try {
nameDescriptionMap(+ev)
} catch {
case e: NoSuchElementException = ev.toString
}
}
def getNameDescriptionList = this.elements.toList.map(
v = (v.toString, getDescriptionOrName(v) ) ).toList
}
And EnumvType:
abstract class EnumvType(val et: Enumeration with EnumTrait)
extends UserType {
val SQL_TYPES = Array({Types.VARCHAR})
override def sqlTypes() = SQL_TYPES
override def returnedClass = classOf[et.Value]
override def equals(x: Object, y: Object): Boolean = {
return x == y
}
override def hashCode(x: Object) = x.hashCode
override def nullSafeGet(resultSet: ResultSet,
names: Array[String],
owner: Object): Object = {
val value = resultSet.getString(names(0))
if (resultSet.wasNull()) return null
else {
return et.valueOf(value)
}
}
override def nullSafeSet(statement: PreparedStatement,
value: Object,
index: Int): Unit = {
if (value == null) {
statement.setNull(index, Types.VARCHAR)
} else {
val en = value.toString
statement.setString(index, en)
}
}
override def deepCopy(value: Object): Object = value
override def isMutable() = false
override def disassemble(value: Object) =
value.asInstanceOf[Serializable]
override def assemble(cached: Serializable, owner: Object):
Serializable = cached
override def replace(original: Object,
target: Object,
owner: Object) = original
}
Which gets me this error:
Exception occured while processing /drinks/
Message: javax.persistence.PersistenceException:
org.hibernate.PropertyAccessException: could not set a field value by
reflection setter of com.xxx.model.Cocktail.cocktailGroup
org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:630)
org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:75)
com.xxx.model.ScalaQuery.getResultList(JPA.scala:82)
com.xxx.model.ScalaQuery.findAll(JPA.scala:77)
com.xxx.snippet.CocktailOps.originals(CocktailOps.scala:120)
I have tried everything I can think of. This used to work before the
recent switch to 2.7.3. Can anyone spot the problem?
Thanks. Website down. Am really screwed here.
Chas.
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[Lift] Re: JPA is killing me. Enumeration hell.
Ahh, I see what the problem might be. There was another change to EnumvType:
Replace this line:
return et.valueOf(value)
With this line:
return et.valueOf(value).getOrElse(null)
I'm sorry this is causing you so much trouble Chas. I made changes to
classes in JPADemo and didn't realize they were used as template code for
other projects.
Perhaps these classes should be rolled into a lift-jpa module so that
everyone can share the same code?
--j
On Thu, Jan 22, 2009 at 3:16 PM, Charles F. Munat c...@munat.com wrote:
I have an entity thus:
@Entity
@Table{val name = cocktails}
class Cocktail extends BaseEntity {
@Id
@GeneratedValue{val strategy = GenerationType.AUTO}
var id : Long = _
var name : String =
var description : String =
var ingredients : String =
@Column{val name = file_name}
var fileName : String =
@Column{val name = is_archived}
var isArchived : Boolean = false
@Type{val `type` = com.xxx.model.CocktailGroupType}
@Column{val name=cocktail_group}
var cocktailGroup: CocktailGroup.Value = CocktailGroup.Originals
}
Which uses this enumeration:
object CocktailGroup extends Enumeration with Enumv {
val Originals = Value(Originals)
val Contemporaries = Value(Contemporaries)
val Classics = Value(Classics)
val Others = Value(Others)
}
class CocktailGroupType extends EnumvType(CocktailGroup) {}
Which is queried thus in orm.xml:
named-query name=findCocktailsByGroup
query![CDATA[from Cocktail c
where c.isArchived = false
and c.cocktailGroup = :cocktailGroup
order by c.name]]/query
/named-query
And called from CocktailOps.scala:
120: val cocktails = Model.createNamedQuery[Cocktail](
findCocktailsByGroup,
cocktailGroup - Originals).findAll
Using Enumv:
trait Enumv {
this: Enumeration =
private var nameDescriptionMap =
scala.collection.mutable.Map[String, String]()
def Value(name: String, desc: String) : Value = {
nameDescriptionMap += (name - desc)
new Val(name)
}
def getDescriptionOrName(ev: this.Value) = {
try {
nameDescriptionMap(+ev)
} catch {
case e: NoSuchElementException = ev.toString
}
}
def getNameDescriptionList = this.elements.toList.map(
v = (v.toString, getDescriptionOrName(v) ) ).toList
}
And EnumvType:
abstract class EnumvType(val et: Enumeration with EnumTrait)
extends UserType {
val SQL_TYPES = Array({Types.VARCHAR})
override def sqlTypes() = SQL_TYPES
override def returnedClass = classOf[et.Value]
override def equals(x: Object, y: Object): Boolean = {
return x == y
}
override def hashCode(x: Object) = x.hashCode
override def nullSafeGet(resultSet: ResultSet,
names: Array[String],
owner: Object): Object = {
val value = resultSet.getString(names(0))
if (resultSet.wasNull()) return null
else {
return et.valueOf(value)
}
}
override def nullSafeSet(statement: PreparedStatement,
value: Object,
index: Int): Unit = {
if (value == null) {
statement.setNull(index, Types.VARCHAR)
} else {
val en = value.toString
statement.setString(index, en)
}
}
override def deepCopy(value: Object): Object = value
override def isMutable() = false
override def disassemble(value: Object) =
value.asInstanceOf[Serializable]
override def assemble(cached: Serializable, owner: Object):
Serializable = cached
override def replace(original: Object,
target: Object,
owner: Object) = original
}
Which gets me this error:
Exception occured while processing /drinks/
Message: javax.persistence.PersistenceException:
org.hibernate.PropertyAccessException: could not set a field value by
reflection setter of com.xxx.model.Cocktail.cocktailGroup
org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:630)
org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:75)
com.xxx.model.ScalaQuery.getResultList(JPA.scala:82)
com.xxx.model.ScalaQuery.findAll(JPA.scala:77)
com.xxx.snippet.CocktailOps.originals(CocktailOps.scala:120)
I have tried everything I can think of. This used to work before the
recent switch to 2.7.3. Can anyone spot the problem?
Thanks. Website down. Am really screwed here.
Chas.
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[Lift] Re: Writing tests for actors
Hey Tim, Testing concurrent code is an Open Problem. That said, keeping pairs of (Message, Response) where you send an actor a Message and get a Response is not a bad idea. However, I see two problems with this approach. Fist, with many uses of actors, when you send a message you don't expect a response. Second, it's not clear whether you're not really testing the concurrency of the actors. Actors can dead/livelock just like threads can, and often these bad states are only observed when particular actions happen at particular times and the scheduler just happens to cycle through actors in just the wrong order to make everything lock up. Just like with threads, there no real good way to -guarantee- that you've avoided these problems other than looking at your design and going Hmmm Since there are no guarantees, the best we can do is to stress test and check if things break. The best approach I can think of is to test your actors by hitting them with messages that mimic real world conditions. For this it's best to use more actors, to simulate many things happening to your system at the same time. You can test for correctness guarantees (after this sequence of actions, this should be the state of the world) and for performance guarantees (total throughput, average response time, etc). HTH, --j On Fri, Jan 16, 2009 at 8:16 PM, timshawn tim.sh...@gmail.com wrote: Hello Lifters, I'm pretty new at programming with actors, and right now I am starting to write an app on lift for a web-based game, which uses cometactor and actors in general. I was wondering if anyone can give me advice on how to write tests for actors, especially testing multiple actors that interact with each other. I was thinking maybe keeping a Map where the keys are the case classes for messages, and the values are the valid responses/thunks that can contain assertions, iterating through and sending them to the actors under test. Does this sound reasonable? can you think of another way of doing it? How have you done it in your apps? Thanks! Tim --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Can or Box or something else
You're talking about algebraic data types. The rest of us are discussing classes and inheritance. When someone says that a Dog is an Animal, they clearly don't mean is isomorphic to. --j On Tue, Jan 6, 2009 at 6:46 PM, Tony Morris tonymor...@gmail.com wrote: Jorge Ortiz wrote: For most people, is does not always and exclusively mean bi-implication. You are free to think this way, if you choose, but please don't impose your Language Police on us. --j For most people, is means is isomorphic to when talking about data types. Furthermore, you are free to invent your own definition, but it is loaded with nothing more than cognitive bias. If Can is Option - under a (failed) definition, then Can is also List by precisely the same flawed method. Somehow, I'm not sure it is I who is missing the point. I had no intention of this. I'm finished. I hope Oliver has understood. -- Tony Morris http://tmorris.net/ S, K and I ought to be enough for anybody. --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Can or Box or something else
And, by the way, squares and triangles are isomorphic ( http://en.wikipedia.org/wiki/Topological_isomorphism). --j On Tue, Jan 6, 2009 at 6:44 PM, Tony Morris tonymor...@gmail.com wrote: related to a combination of Option and Either I'm not sure how I am missing that point since that is exactly the code I provided earlier. There is no point, except to assist Oliver in looking passed these fancy language tricks. In a pragmatic and therefore, not very useful way, yes Can is like Option. But now that I have subverted what it means for Can to be like anything I'm going to propose that Can is List - it is either empty or has a value (right?). Let's all chime in now with our preferred cognitive biases now that we have lost meaning into the impractical infection called pragmatism. A square is like a triangle, but with one extra side. No wait, a square is a combination of four triangles. Oh actually, a square is like a triangle, except it is not in any way at all. Don't fall for it Oliver - it's a misintegration. -- Tony Morris http://tmorris.net/ S, K and I ought to be enough for anybody. Miles Sabin wrote: On Tue, Jan 6, 2009 at 11:23 PM, Tony Morris tonymor...@gmail.com wrote: No this is a mistake. Can is not an Option. Indeed it is (almost) impossible to write Can using Option (if you are familiar with Peano Arithmetic you will understand the need to qualify with almost). While you're right in a (very) narrowly technical sense you're missing the point that Lift's Can has functionality that is very closely related to a combination of Option and Either in a touchy-feely pragmatic getting-useful-things-actually-done sort of sense. To prove the point, here, http://www.milessabin.com/misc/Chain.scala is something I put together a while ago which can be used in a very similar way to Can (at least, I expect that's the case ... I haven't worked with Lift so I can't be sure) but which only exposes Option and Either in it's public interface. It's also sufficiently Monad like to get along nicely with for comprehensions. Given the likelihood of confusion between Can and Option (irrespective the algebraic niceties) I wish Lift had gone for something more like that than a rename to Box. Cheers, Miles --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Can or Box or something else
It depends on what the meaning of is is.
If Option were not sealed, Can could be implemented as an Option... by
adding Failure and Empty as subclasses of None. In this (OO) sense, a Can is
an option.
In the algebraic sense, then you're probably right that a Can is not an
Option.
--j
On Tue, Jan 6, 2009 at 5:23 PM, Tony Morris tonymor...@gmail.com wrote:
No this is a mistake. Can is not an Option. Indeed it is (almost)
impossible to write Can using Option (if you are familiar with Peano
Arithmetic you will understand the need to qualify with almost). There
is an arrow from forall A. Can[A] to Option[A] but not from forall A.
Option[A] to Can[A] (easily) - try it for yourself. To suggest that
Can is an Option (or an Option with more features or an Either) is
a mistake of misintegration (Peikoff DIM Hypothesis). Indeed the Can
algebra has nothing to do with Option (except for the aforementioned
function). There is no isomorphism between Can and Option - they are
not the same, not even close.
Here is a bit of code for fun. Note the bijective function using
Either alone:
sealed trait T[+A] {
val e: Either[(String, T[Throwable], List[(String, Throwable)],
Either[A, Unit]]
// bijection to e
val c: Can[A] = e match {
case Left(m, e, c) = Failure(m, e,
// Can makes the mistake of using a data constructor as a type.
// Unfortunately Scala permits this.
c map toFailure)
case Right(e) = e match {
case Left(a) = Full(a)
case Right(_) = Empty
}
}
}
object T {
// construct with Either or Can
}
--
Tony Morris
http://tmorris.net/
S, K and I ought to be enough for anybody.
David Pollak wrote:
It's an Option.
It contains a value or it doesn't. In the case that it does not
contain a value, it may contain out of band information. This is
not any different from None which contains information. It
contains the information that it lacks information.
Sure, you can write Option[T] as Either[T, Nothing], but the value
of only having on type is lost.
On Tue, Jan 6, 2009 at 2:59 PM, Tony Morris tonymor...@gmail.com
mailto:tonymor...@gmail.com wrote:
Right, that's what Oliver said and I was reinforcing it with
deductive reasoning. It is also not Option. It is something else
altogether. Nevertheless, an isomorphism can easily be written with
Either alone (ignoring bottoms). So in some loose sense it is an
Either.
-- Tony Morris http://tmorris.net/
S, K and I ought to be enough for anybody.
David Pollak wrote:
Tony,
Can (now Box) is not an Either.
David
On Tue, Jan 6, 2009 at 2:37 PM, Tony Morris
tonymor...@gmail.com mailto:tonymor...@gmail.com
mailto:tonymor...@gmail.com mailto:tonymor...@gmail.com
wrote:
Can is not an Option and to call it so in any way is an error of
misintegration. Indeed it would be an error to replace Option
with
Can - they are completely different algebras. Either is kinded *
- * - * so cannot possible be isomorphic and cannot possibly
have
map, flatMap etc (though it can have a bifunctor map being
covariant in both type arguments). However, Either.LeftProjection
and Either.RightProjection are kinded * - * and are both
covariant
functors and monads, hence map, flatMap etc. are available. e.g.
for(x - either.left) ... is valid, try it.
Of mild interest, it is possible to construct an isomorphism
to Can
using both Either and Option. Indeed, it is possible to construct
an isomorphism to Option using Either e.g. forall A. Option[A] ≡
Either [Unit, A] so it is possible using Either alone. I'll
leave both as reader exercises.
On Dec 21 2008, 5:15 am, Oliver Lambert ola...@gmail.com
mailto:ola...@gmail.com
mailto:ola...@gmail.com mailto:ola...@gmail.com wrote:
Ok so Can is not either an Either or an Option, its a Can. I
kind of
wondered when I first used Can, and it was described as an
enhanced
Option, why it wasn't called something like Option+ with
None, Some
and Failure.
On 21/12/2008, at 5:47 AM, David Pollak wrote:
Can has map, flatMap, filter etc. So it can be used in a for
comphrension. I don't believe Either has those methods.
Further,
Can has a bunch of helpers to turn Empty into Failure
On Dec 20, 2008 10:33 AM, Oliver Lambert ola...@gmail.com
mailto:ola...@gmail.com
mailto:ola...@gmail.com mailto:ola...@gmail.com wrote:
Is Can a little less like Option and more like scala.Either,
where
the left side is used to indicate failure? On 21/12/2008, at
1:43 AM, David Pollak wrote: Folks,
Over the
year that Lift has had Can[T...
-- Lift, the simply functional web framework http://liftweb.net
Collaborative Task Management http://much4.us Follow me:
http://twitter.com/dpp Git some: http://github.com/dpp
-- Lift, the simply functional web framework http://liftweb.net
Collaborative Task Management http://much4.us Follow me:
http://twitter.com/dpp Git some:
[Lift] Re: Can or Box or something else
For most people, is does not always and exclusively mean bi-implication.
You are free to think this way, if you choose, but please don't impose your
Language Police on us.
--j
On Tue, Jan 6, 2009 at 5:49 PM, Tony Morris tonymor...@gmail.com wrote:
When talking about data types is means is congruent to or is
isomorphic to. You are not free to use is arbitrarily, since if you
are then Can is anything I want it to be.
Since equivalence can be broken into an implication both ways e.g. A
- B and B - A then it is quite easy to test if Can is an Option.
def f[A](o: Option[A]): Can[A] // this should be total and bijective
def g[A](c: Can[A]): Option[A] // this should be total and bijective
The use of = in function signatures means logical implication. Does
Can imply Option? Yes (you can complete the g function). Does Option
imply Can? No (you cannot complete the f function). Therefore, Can is
not an Option. It was not even close (lack of totality in this test is
catastrophic).
If you want to try to save this notion of Well Can is a something,
then I have already pointed out a suggestion. Try to think of others,
but do not say that Can is an Option - it is not, not even close. Poor
Oliver was all confuzzled when he popped this one to me the other day.
--
Tony Morris
http://tmorris.net/
S, K and I ought to be enough for anybody.
Jorge Ortiz wrote:
It depends on what the meaning of is is.
If Option were not sealed, Can could be implemented as an
Option... by adding Failure and Empty as subclasses of None. In
this (OO) sense, a Can is an option.
In the algebraic sense, then you're probably right that a Can is
not an Option.
--j
On Tue, Jan 6, 2009 at 5:23 PM, Tony Morris tonymor...@gmail.com
mailto:tonymor...@gmail.com wrote:
No this is a mistake. Can is not an Option. Indeed it is (almost)
impossible to write Can using Option (if you are familiar with
Peano Arithmetic you will understand the need to qualify with
almost). There is an arrow from forall A. Can[A] to Option[A] but
not from forall A. Option[A] to Can[A] (easily) - try it for
yourself. To suggest that Can is an Option (or an Option with more
features or an Either) is a mistake of misintegration (Peikoff
DIM Hypothesis). Indeed the Can algebra has nothing to do with
Option (except for the aforementioned function). There is no
isomorphism between Can and Option - they are not the same, not
even close.
Here is a bit of code for fun. Note the bijective function using
Either alone:
sealed trait T[+A] { val e: Either[(String, T[Throwable],
List[(String, Throwable)], Either[A, Unit]]
// bijection to e val c: Can[A] = e match { case Left(m, e, c) =
Failure(m, e, // Can makes the mistake of using a data constructor
as a type. // Unfortunately Scala permits this. c map toFailure)
case Right(e) = e match { case Left(a) = Full(a) case Right(_) =
Empty } } }
object T { // construct with Either or Can }
-- Tony Morris http://tmorris.net/
S, K and I ought to be enough for anybody.
David Pollak wrote:
It's an Option.
It contains a value or it doesn't. In the case that it does not
contain a value, it may contain out of band information. This is
not any different from None which contains information. It
contains the information that it lacks information.
Sure, you can write Option[T] as Either[T, Nothing], but the
value of only having on type is lost.
On Tue, Jan 6, 2009 at 2:59 PM, Tony Morris
tonymor...@gmail.com mailto:tonymor...@gmail.com
mailto:tonymor...@gmail.com mailto:tonymor...@gmail.com
wrote:
Right, that's what Oliver said and I was reinforcing it with
deductive reasoning. It is also not Option. It is something else
altogether. Nevertheless, an isomorphism can easily be written
with
Either alone (ignoring bottoms). So in some loose sense it is an
Either.
-- Tony Morris http://tmorris.net/
S, K and I ought to be enough for anybody.
David Pollak wrote:
Tony,
Can (now Box) is not an Either.
David
On Tue, Jan 6, 2009 at 2:37 PM, Tony Morris
tonymor...@gmail.com mailto:tonymor...@gmail.com
mailto:tonymor...@gmail.com mailto:tonymor...@gmail.com
mailto:tonymor...@gmail.com mailto:tonymor...@gmail.com
mailto:tonymor...@gmail.com mailto:tonymor...@gmail.com
wrote:
Can is not an Option and to call it so in any way is an error
of misintegration. Indeed it would be an error to replace
Option
with
Can - they are completely different algebras. Either is kinded
* - * - * so cannot possible be isomorphic and cannot
possibly
have
map, flatMap etc (though it can have a bifunctor map being
covariant in both type arguments). However,
Either.LeftProjection and Either.RightProjection are kinded *
- * and are both
covariant
functors and monads, hence map, flatMap etc. are available.
e.g. for(x - either.left) ... is valid, try it.
Of mild
[Lift] Re: query about current status of MySQL support
I would highly recommend Aqua Data Studio --j On Sun, Jan 4, 2009 at 11:47 PM, Matt Harrington mbh.li...@gmail.comwrote: On Sun, Jan 4, 2009 at 8:14 PM, O'Rorke Paul p...@ororke.com wrote: An advantage of MySQL on the Mac is that there is a free, reasonably nice GUI database tool (CocoaMySQL). I could use Derby if I had a similar (preferably free) user interface. There is one in NetBeans but I don't think there is one in eclipse. I think David already answered your question about MySQL, but to interface with Derby you just need any database utility which speaks JDBC. There are several to choose from, both standalone varieties and Eclipse plugins such as this one: http://www.eclipseplugincentral.com/Web_Links-index-req-viewlink-cid-379.html I haven't tried that one myself though. I'm lead to believe that this app is popular: http://www.minq.se/products/dbvis/ I personally just use the clients in NetBeans or IntelliJ IDEA. Matt --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: *** Minor breaking change *** - Lift HTTP authentication
Why Box[List[Role]] instead of just List[Role]? Is there a semantic difference between Empty and Full(Nil)? --j On Mon, Dec 29, 2008 at 7:33 AM, Marius marius.dan...@gmail.com wrote: Hi, If you use so far the HTTP authentication support in Lift, you code would likely break. So far we could assign a single role to user by using userRoleRequestVar. This has been changed from: object userRole extends RequestVar[Box[Role]](Empty) to object userRoles extends RequestVar[Box[List[Role]]](Empty) In your authentication function you can say: userRoles(Full(AuthRole(useradmin, siteadmin))) or userRoles(Full(AuthRole(useradmin))) Br's, Marius --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Can or Box or something else
Promise has a specific technical meaning in the context of concurrency. See: http://en.wikipedia.org/wiki/Futures_and_promises --j On Sun, Dec 28, 2008 at 2:46 PM, stephen goldbaum stephen.goldb...@gmail.com wrote: One last suggestion... Promise with Fulfilled, Empty, and Broken (my other suggestion of Blond, Brunette and Redhead didn't seem to make it...). --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Fwd: [scala-announce] Scala 2.7.3 RC1
It takes a day or so for hudson to pick up new Scala releases (I think DavidB had a bad experience with a -final release that wasn't really final), but as soon scala-tools.org picks it up I'm on it. --j On Tue, Dec 23, 2008 at 11:11 AM, David Pollak feeder.of.the.be...@gmail.com wrote: Jorge, You on the 2.7.3 branch of Lift? Ideally, we can have 2.7.3 be the 0.10 release on Jan 2. Thanks, David -- Forwarded message -- From: Antonio Cunei scala...@cunei.com Date: Tue, Dec 23, 2008 at 5:43 AM Subject: [scala-announce] Scala 2.7.3 RC1 To: sc...@listes.epfl.ch, scala-annou...@listes.epfl.ch Just in time for Christmas, here is the first release candidate of our new Scala distribution: Scala 2.7.3 RC1. This new version is mainly intended as a maintenance release: it fixes a number of bugs and improves on various aspects of the existing code. There are no new features, however; they are being added instead to a new development branch, currently in its early stages, that will become the next major Scala release sometime next year. If no particular problems are found with this first release candidate, a final Scala 2.7.3 release should follow in a few weeks. You can download Scala 2.7.3.RC1, as usual, from our Download Page: http://www.scala-lang.org/downloads. An updated Scala plugin for Eclipse is also available (see http://www.scala-lang.org/node/94). WHAT IS NEW? - There are no new features, as this is essentially a maintenance release; however, many bug fixes and other improvements are available in this version, including: * fixes for bugs #1460, #1467, #1461, #1464, #1454, #1382, #1374, #1402, #1379, #1375, #1241, #1263, #1235, #547, #1404, #1390, #1329, #1329, #1367, #1323, #1306, #1294, #1249, #508, #1206, #1267, #1289, #1271, #998, #1232, #1167, #1315, #820, #1083, #1257, #1264, #1358, #1514, #1541 * fixed IntMap and LongMap.getOrElse * several optimisation fixes (dead-code elimination) * scaladoc fixes * deepToString fixes * fixed Queue.enqueue * ScalaSwing fixes and improvements * optimisation to Range.foreach (#1297) * fixed EOF problem with RegexParsers.phrase * fixed a problem with files vs. URLs on Windows. * fixed problem with partest-created compilers not finding scala package. * fix for testing.Show on .NET * fixes for Windows platform * fixed bug where fsc sometimes fails to start * fix memory leak in handling GC of actors * remove race condition when linking/unlinking actors * thread pool in actor runtime now uses Thread.getState() instead of timestamps on JVM 1.5, yielding substantial performance improvements * improve actor scheduling on JVM 1.4 * fixes to BigDecimal * improvements to JVM 1.4 support -- Lift, the simply functional web framework http://liftweb.net Collaborative Task Management http://much4.us Follow me: http://twitter.com/dpp Git some: http://github.com/dpp --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: todo_steps feedback
Not that I am aware of, but then I am in Australia and these days almost anything could be mucking about with my internet connectivity, but I digress... Bit of a sore point, eh? At least in Australia they tell you about the mucking. In the US that's all state secrets or somesuch. It's so secret that not even the legislature or the judiciary can know about it, but I digress... --j --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Github pages
http://github.com/blog/272-github-pages --j --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: behind the scenes with Maven?
Yup, you've about got it right. As I understand it, Hudson uses Maven to fetch the latest code from Github, compile, test, and deploy it. (By 'deploy' I mean: put jars, scaladocs, and archetypes on scala-tools.org) When commits are made to Github, it takes about an hour for changes to appear on scala-tools.org mvn -U forces an update. mvn (without -U) will also periodically check for updates anyway. mvn -o forces offline (no updates) mode. --j On Tue, Dec 16, 2008 at 9:24 PM, Matt Harrington mbh.li...@gmail.comwrote: A few times over the past week, I've had something of a ghost in the machine with Maven. I haven't spent the time to track things down and have just blown away my repository and things resolve themselves. However, the next time Maven acts up I want to really figure things out. It'd help if I knew more about what happens behind the scenes with 0.10-SNAPSHOT. Here's a guess: 1.) Committers upload to github.org 2.) A machine (named hudson maybe?) builds 0.10-SNAPSHOT from the github source (how often?) 3.) The compiled artifacts such as lift-mapper are transfered to scala-tools.org 4.) Scaladocs are built from step 3 by scala-tools.org 5.) The lift archetypes get updated Let's say that breaking changes are made in step 1. That will only affect me if I run mvn -U, right? ---Matt --~--~-~--~~~---~--~~ 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.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Fwd: [scala-user] Is there a memory leak in 2.7.2 Actors?
Can do
On 12/12/08, David Pollak feeder.of.the.be...@gmail.com wrote:
Folks,
Who has time to do testing, etc. with 2.7.3?
Thanks,
David
-- Forwarded message --
From: Philipp Haller philipp.hal...@epfl.ch
Date: Fri, Dec 12, 2008 at 6:42 AM
Subject: Re: [scala-user] Is there a memory leak in 2.7.2 Actors?
To: David Pollak feeder.of.the.be...@gmail.com
Cc: scala-user scala-u...@listes.epfl.ch
Hi again,
FYI, I committed a fix in r16750 (2.7.x branch) and r16751 (trunk). It
looks like we are probably releasing 2.7.3 including this fix some time
next week (or shortly after).
Cheers,
Philipp
philipp.hal...@epfl.ch wrote:
Hi,
I found the memory leak. A fix should be ready shortly.
Cheers,
Philipp
Quoting David Pollak feeder.of.the.be...@gmail.com:
Folks,
I've been noticing that Lift apps run out of memory after a certain
period of time. This is a relatively new thing. I think I've
traced the problem back to a memory leak in the Actors library. The
enclosed program terminates with an out of memory error.
Am I failing to release the Actors in some way or is there a memory leak?
Thanks,
David
import scala.actors._
import Actor._
object ActorWatcher extends Actor {
def act = loop {
react {
case Exit(actor: Actor, why: Throwable) =
failureFuncs.foreach(f = f(actor, why))
case x = println(x)
}
}
private def startAgain(a: Actor, ignore: Throwable) {a.start}
private def logActorFailure(actor: Actor, why: Throwable) {
println(The ActorWatcher restarted +actor+ because +why)
}
/**
* If there's something to do in addition to starting the actor
up, pre-pend the
* actor to this List
*/
var failureFuncs: List[(Actor, Throwable) = Unit] = logActorFailure _
::
startAgain _ :: Nil
this.start
this.trapExit = true
}
case object Start
case object EndMe
class A extends Actor {
def act = loop {
react {
case Start =
link(ActorWatcher)
case EndMe =
unlink(ActorWatcher)
exit()
}
}
}
object Sloth {
def z(in: Long) = if (in / 1024L == 0L) in
else if (in / (1024L * 1024L) == 0L) (in / 1024L).toString + K
else (in / (1024L * 1024L)).toString + M
def main(args: Array[String]) {
val rt = Runtime.getRuntime()
for (o - 1 to 100) {
println(Outer +o)
//var a: List[Actor] = Nil
for (i - 1 to 1) {
val t = new A
//a = t :: a
t.start
t ! Start
t ! EndMe
}
println(Done creating)
// for (act - a) act ! EndMe
ActorGC.gc()
rt.gc()
println(Free +z(rt.freeMemory())+ total +z(rt.totalMemory()))
}
}
}
--
Lift, the simply functional web framework http://liftweb.net
Collaborative Task Management http://much4.us
Follow me: http://twitter.com/dpp
Git some: http://github.com/dpp
--
Lift, the simply functional web framework http://liftweb.net
Collaborative Task Management http://much4.us
Follow me: http://twitter.com/dpp
Git some: http://github.com/dpp
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[Lift] Re: maven problem - can't make ToDo example work - or even get off the ground.
You need to cd into the project directory cd todo --j On Wed, Dec 10, 2008 at 5:30 PM, mike beckerle [EMAIL PROTECTED] wrote: Lifters, I tried to follow David Pollack's ToDo example to start trying out lift. It dies on me before we even get started. I am running maven 2.0.9 on Ubuntu. Any help resolving this greatly appreciated. The first big mvn command succeeds: mvn archetype:create -U \ -DarchetypeGroupId=net.liftweb \ -DarchetypeArtifactId=lift-archetype-basic \ -DarchetypeVersion=0.10-SNAPSHOT \ -DremoteRepositories=http://scala-tools.org/repo-snapshots \ -DgroupId=com.liftworkshop -DartifactId=todo The next step fails: mvn jetty:run [INFO] Scanning for projects... [INFO] Searching repository for plugin with prefix: 'jetty'. [INFO] [ERROR] BUILD ERROR [INFO] [INFO] The plugin 'org.apache.maven.plugins:maven-jetty-plugin' does not exist or no valid version could be found [INFO] [INFO] For more information, run Maven with the -e switch [INFO] [INFO] Total time: 1 second [INFO] Finished at: Tue Dec 09 18:54:24 EST 2008 [INFO] Final Memory: 1M/4M [INFO] --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Debugging CometActors?
Yeah, something like that :)
In the absence of props files, where does Log.error go? It's not showing up
in the console...
And even then, something is kinda funky. After my actor dies, ctrl-c won't
fully kill Jetty. I have to kill -9 it from another Terminal to make it
fully die.
--j
On Wed, Dec 10, 2008 at 9:40 PM, David Pollak [EMAIL PROTECTED]
wrote:
You mean like:
object ActorWatcher extends Actor {
def act = loop {
react {
case Exit(actor: Actor, why: Throwable) =
failureFuncs.foreach(f = tryo(f(actor, why)))
case _ =
}
}
private def startAgain(a: Actor, ignore: Throwable) {a.start}
private def logActorFailure(actor: Actor, why: Throwable) {
Log.error(The ActorWatcher restarted +actor+ because +why, why)
}
/**
* If there's something to do in addition to starting the actor up,
pre-pend the
* actor to this List
*/
var failureFuncs: List[(Actor, Throwable) = Unit] = logActorFailure _ ::
startAgain _ :: Nil
this.start
this.trapExit = true
}
Which CometActors link themselves to on startup?
On Wed, Dec 10, 2008 at 7:32 PM, Jorge Ortiz [EMAIL PROTECTED]wrote:
Is there a good way to debug CometActors? Right now if a CometActor throws
an exception, it gets swallowed silently, kills the actor, and Lift hangs
waiting for a response from the now-dead actor until the timeout kicks in.
If there aren't any debug mechanisms, are there any objections to me
committing some code that will catch exceptions thrown by the actor and
logging them for debugging purposes?
--j
--
Lift, the simply functional web framework http://liftweb.net
Collaborative Task Management http://much4.us
Follow me: http://twitter.com/dpp
Git some: http://github.com/dpp
--~--~-~--~~~---~--~~
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Lift group.
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[Lift] Re: LiftRules consolidation
Seems like prime opportunity for an abstraction... Why not make them (*gasp*) mutable data structures with prepend/append methods? --j On Tue, Dec 9, 2008 at 1:35 PM, Marius [EMAIL PROTECTED] wrote: Hi. Unfortunatelly only some vars that are essentially Lists of something are private and prepend/append functions are exposed. I proposed to do this for ALL List variables. Br's, Marius --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: LiftRules consolidation
Hm... I can think of situations where such mutations are useful after Boot (app/prependSnippet comes to mind). Maybe they can be made immutable (.toList) as necessary? --j On Tue, Dec 9, 2008 at 2:01 PM, David Pollak [EMAIL PROTECTED]wrote: And we should freeze the lists after Boot is finished. The permutation methods should throw exceptions post-boot On Dec 9, 2008 11:39 AM, Jorge Ortiz [EMAIL PROTECTED] wrote: Seems like prime opportunity for an abstraction... Why not make them (*gasp*) mutable data structures with prepend/append methods? --j On Tue, Dec 9, 2008 at 1:35 PM, Marius [EMAIL PROTECTED] wrote: Hi. Unfortunatel... --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: LiftRules consolidation
I would use a ListBuffer as the underlying representation. I would call the
methods append and prepend (LiftRules.snippet.append,
LiftRules.dispatch.append, etc.). I would also make them immutable
as-needed. ListBuffer caches toList so that it's very efficient if you don't
append/prepend in between calls to toList.
On Tue, Dec 9, 2008 at 2:20 PM, Marius [EMAIL PROTECTED] wrote:
I'm not sure if this is the case ... if we want context dependent
Snippets then probably using loc snippets is the right place
How about something like:
abstract class RulesSeq[T] {
var rules : List[T] = Nil
private def safe_?(f : = Any) {
doneBoot match {
case false = f
case _ = throw new IllegalStateException(Can not modify after
boot.);
}
}
def prependRule(r: T) {
safe_? {
rules = r :: rules
}
}
def appendRule(r: T) {
safe_? {
rules = rules ::: List(r)
}
}
}
Br's,
marius
On Dec 9, 10:12 pm, Jorge Ortiz [EMAIL PROTECTED] wrote:
Hm... I can think of situations where such mutations are useful after
Boot (app/prependSnippet comes to mind). Maybe they can be made immutable
(.toList) as necessary?
--j
On Tue, Dec 9, 2008 at 2:01 PM, David Pollak
[EMAIL PROTECTED]wrote:
And we should freeze the lists after Boot is finished. The permutation
methods should throw exceptions post-boot
On Dec 9, 2008 11:39 AM, Jorge Ortiz [EMAIL PROTECTED] wrote:
Seems like prime opportunity for an abstraction...
Why not make them (*gasp*) mutable data structures with prepend/append
methods?
--j
On Tue, Dec 9, 2008 at 1:35 PM, Marius [EMAIL PROTECTED]
wrote:
Hi. Unfortunatel...
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[Lift] Re: How does lift wrap the templates
Try:
case badger :: Nil = Left(() = demo)
An Either[A, B] means it can be either a Left[A] or a Right[B].
--j
On Sat, Dec 6, 2008 at 12:35 PM, Tim Perrett [EMAIL PROTECTED] wrote:
Sorry, the code should have been:
object ExampleLoader {
def template: LiftRules.ViewDispatchPF = {
case badger :: Nil = () = demo
}
def demo: Can[NodeSeq] = Full(html/html)
}
[INFO] found : () = net.liftweb.util.Can[scala.xml.NodeSeq]
[INFO] required: Either[() = net.liftweb.util.Can
[scala.xml.NodeSeq],net.liftweb.http.LiftView]
[INFO] case badger :: Nil = () = demo
[INFO]^
Cheers, Tim
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[Lift] Re: Record small paradigm shift
class Foo
// type is singleton type Bar.type
object Bar extends Foo {
def exc = (new Exception).printStackTrace
}
// type is structural type Foo{def exc: Unit}
val Baz = new Foo {
def exc = (new Exception).printStackTrace
}
// compare:
Bar.exc
Baz.exc
Singleton types get their own .class file. Structural types use reflection.
--j
On Tue, Dec 2, 2008 at 12:33 PM, Alex Boisvert [EMAIL PROTECTED] wrote:
On Tue, Dec 2, 2008 at 10:24 AM, Jorge Ortiz [EMAIL PROTECTED]wrote:
If you add (non-overriden) fields to a val, they'll always be invoked via
reflection, which takes a performance hit. Objects, on the other hand,
define their own class so reflection isn't necessary.
Can you give an example? I can't picture this from your description.
alex
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[Lift] Re: Record small paradigm shift
I agree. Fields should be perfectly functional by just overriding members.
But it should be mentioned in docs, etc as Lift best practices to not add
methods or fields inside of Fields.
--j
On Tue, Dec 2, 2008 at 1:01 PM, Marius [EMAIL PROTECTED] wrote:
Quite right ... still I don't quite see why someone would use a Field
as structural type (.. or as anonymous instance) and define new -
overridden functions and invoke them later. Field should only override
functions to adapt the behavior for the needed situation.
Nevertheless it is a very good observation !
Br's,
Marius
On Dec 2, 8:51 pm, Jorge Ortiz [EMAIL PROTECTED] wrote:
class Foo
// type is singleton type Bar.type
object Bar extends Foo {
def exc = (new Exception).printStackTrace
}
// type is structural type Foo{def exc: Unit}
val Baz = new Foo {
def exc = (new Exception).printStackTrace
}
// compare:
Bar.exc
Baz.exc
Singleton types get their own .class file. Structural types use
reflection.
--j
On Tue, Dec 2, 2008 at 12:33 PM, Alex Boisvert [EMAIL PROTECTED]
wrote:
On Tue, Dec 2, 2008 at 10:24 AM, Jorge Ortiz [EMAIL PROTECTED]
wrote:
If you add (non-overriden) fields to a val, they'll always be invoked
via
reflection, which takes a performance hit. Objects, on the other hand,
define their own class so reflection isn't necessary.
Can you give an example? I can't picture this from your description.
alex
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[Lift] Re: Compile problems with lift
It might be the type checker getting confused.
Try:
val models: List[MetaMapper] = List(User, Game, GameUser, Hull, Ship,
StarSystem)
You can also call schemify with:
Schemifier.schemify(true, Log.infoF _, models :_*)
Instead of the foreach stuff
--j
On Mon, Dec 1, 2008 at 3:44 PM, Juha L [EMAIL PROTECTED] wrote:
I'm not sure whether it is just me, but I seem to be stumbling on the
Scala compiler exceptions whatever I do. First there was one when
creating specs that I mailed earlier, and now I get compile problems
when I changed Boot-class.
I have changed Boot-class as follows. Idea is to allow different
database based on runlevel and also cleaning up the tables when doing
tests. I have tried to change models to List[KeyedMapper[Any, Any]]
but then I just get different set of exceptions. If I expand models by
hand to schemify and cleanTables, it works just fine. Should I just
send report to scala lang -list or am I doing something wrong?
class Boot {
def database = (org.apache.derby.jdbc.EmbeddedDriver,
jdbc:derby:liftdb_+Props.mode.toString.toLowerCase+;create=true)
def dbVendor = new ConnectionManager {
def newConnection(name: ConnectionIdentifier): Can[Connection] = {
try {
val (driver, databaseString) = database
Class.forName(driver)
Full(DriverManager.getConnection(databaseString))
} catch {
case e : Exception = e.printStackTrace; Empty
}
}
def releaseConnection(conn: Connection) {conn.close}
}
val models = List(User, Game, GameUser, Hull, Ship, StarSystem)
def schemify {
models foreach {
m = Schemifier.schemify(true, Log.infoF _, m)
}
}
def cleanTables {
models foreach {
m = m.bulkDelete_!!()
}
}
def boot {
Log.info(Running boot at runmode + Props.mode)
if (!DB.jndiJdbcConnAvailable_?) DB.defineConnectionManager
(DefaultConnectionIdentifier, dbVendor)
Props.mode match {
case Props.RunModes.Development =
schemify
case Props.RunModes.Test =
schemify
cleanTables
case _ =
}
...
I get this kind of stack trace:
[WARNING] Exception in thread main java.lang.OutOfMemoryError: Java
heap space
[WARNING] at scala.tools.nsc.util.HashSet.growTable
(HashSet.scala:58)
[WARNING] at scala.tools.nsc.util.HashSet.addEntry(HashSet.scala:
41)
[WARNING] at scala.tools.nsc.symtab.Types$class.unique
(Types.scala:2221)
[WARNING] at scala.tools.nsc.symtab.Types$class.mkThisType
(Types.scala:1910)
[WARNING] at scala.tools.nsc.symtab.SymbolTable.mkThisType
(SymbolTable.scala:12)
[WARNING] at scala.tools.nsc.symtab.Symbols$ClassSymbol.thisType
(Symbols.scala:1540)
[WARNING] at scala.tools.nsc.symtab.Types$class.copyRefinedType
(Types.scala:1986)
[WARNING] at scala.tools.nsc.symtab.SymbolTable.copyRefinedType
(SymbolTable.scala:12)
[WARNING] at scala.tools.nsc.symtab.Types$TypeMap.mapOver
(Types.scala:2324)
[WARNING] at scala.tools.nsc.symtab.Types$AsSeenFromMap.apply
(Types.scala:2708)
[WARNING] at scala.tools.nsc.symtab.Types$AsSeenFromMap.apply
(Types.scala:2575)
[WARNING] at scala.tools.nsc.symtab.Types$TypeMap.mapOver
(Types.scala:2343)
[WARNING] at scala.tools.nsc.symtab.Types$AsSeenFromMap.apply
(Types.scala:2708)
[WARNING] at scala.tools.nsc.symtab.Types$Type.asSeenFrom
(Types.scala:399)
[WARNING] at scala.tools.nsc.symtab.Types$Type.memberType
(Types.scala:429)
[WARNING] at scala.tools.nsc.symtab.Types$Type.findMember
(Types.scala:696)
[WARNING] at scala.tools.nsc.symtab.Types$Type.nonPrivateMember
(Types.scala:378)
[WARNING] at scala.tools.nsc.symtab.Types$$anonfun$29.apply
(Types.scala:3984)
[WARNING] at scala.tools.nsc.symtab.Types$$anonfun$29.apply
(Types.scala:3983)
[WARNING] at scala.List.map(List.scala:805)
[WARNING] at scala.tools.nsc.symtab.Types$class.lubsym$1
(Types.scala:3983)
[WARNING] at scala.tools.nsc.symtab.Types$$anonfun$31.apply
(Types.scala:4015)
[WARNING] at scala.tools.nsc.symtab.Types$$anonfun$31.apply
(Types.scala:4010)
[WARNING] at scala.List.foreach(List.scala:834)
[WARNING] at scala.tools.nsc.symtab.Types$class.lub0$1
(Types.scala:4010)
[WARNING] at scala.tools.nsc.symtab.Types$class.lub(Types.scala:
4034)
[WARNING] at scala.tools.nsc.symtab.SymbolTable.lub
(SymbolTable.scala:12)
[WARNING] at scala.tools.nsc.symtab.Types$$anonfun$41.apply
(Types.scala:4180)
[WARNING] at scala.tools.nsc.symtab.Types$$anonfun$41.apply
(Types.scala:4171)
[WARNING] at scala.List$.map2(List.scala:326)
[WARNING] at scala.tools.nsc.symtab.Types
$class.mergePrefixAndArgs(Types.scala:4170)
[WARNING] at
scala.tools.nsc.symtab.SymbolTable.mergePrefixAndArgs
(SymbolTable.scala:12)
--~--~-~--~~~---~--~~
You received this message
[Lift] Re: Upgrading to Manifest[C] from Class[C]
Oops... forgot I was working on a branch. Pushed now. --j On Thu, Nov 27, 2008 at 11:38 PM, Marius [EMAIL PROTECTED] wrote: Nice ! ... is this committed anywhere? On Nov 28, 4:57 am, Jorge Ortiz [EMAIL PROTECTED] wrote: Folks, First, I've deprecated the containsClass method in ClassHelpers. It was only being used once in the entire Lift codebase, and it was basically equivalent to a very short call to List.exists. If you're using containsClass and have some objection to using List.exists instead, let me know and I'll undeprecate it, but otherwise I see no good reason to keep it around. Second, I've updated some of the stuff in net.liftweb.util to take advantage of Scala's new Manifests, which provide a cleaner interface. The older methods using Class[C] should still be there and work as they did before. For example, Cans have an isA method that takes a Class and returns a Full can if the contents of the Can can be cast to that class, or Empty otherwise. To illustrate: abstract class Base case object Derived extends Base case object Incompatible extends Base Ful(Derived).isA(classOf[Base]) // returns a Full[Base] Full(Derived).isA(classOf[Incompatible]) // returns an Empty Empty.isA(classOf[Base]) // returns Empty The new method is called asA, and has a sligtly different (cleaner) interface: Full(Derived).asA[Base] // returns a Full[Base] Full(Derived).asA[Incompatible] // returns an Empty Empty.asA[Base] // returns an Empty Likewise, the findClass methods in ClassHelpers take a Class[C] to which the found class must conform. There are now new findType methods which don't require the Class[C], just a type annotation. So instead of: findClass(name, where, classOf[CometActor]) You can now do: findType[CometActor](name, where) There were some methods private to Lift that I migrated as well, but those shouldn't affect your apps. Thanks, --j --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Upgrading to Manifest[C] from Class[C]
Folks, First, I've deprecated the containsClass method in ClassHelpers. It was only being used once in the entire Lift codebase, and it was basically equivalent to a very short call to List.exists. If you're using containsClass and have some objection to using List.exists instead, let me know and I'll undeprecate it, but otherwise I see no good reason to keep it around. Second, I've updated some of the stuff in net.liftweb.util to take advantage of Scala's new Manifests, which provide a cleaner interface. The older methods using Class[C] should still be there and work as they did before. For example, Cans have an isA method that takes a Class and returns a Full can if the contents of the Can can be cast to that class, or Empty otherwise. To illustrate: abstract class Base case object Derived extends Base case object Incompatible extends Base Ful(Derived).isA(classOf[Base]) // returns a Full[Base] Full(Derived).isA(classOf[Incompatible]) // returns an Empty Empty.isA(classOf[Base]) // returns Empty The new method is called asA, and has a sligtly different (cleaner) interface: Full(Derived).asA[Base] // returns a Full[Base] Full(Derived).asA[Incompatible] // returns an Empty Empty.asA[Base] // returns an Empty Likewise, the findClass methods in ClassHelpers take a Class[C] to which the found class must conform. There are now new findType methods which don't require the Class[C], just a type annotation. So instead of: findClass(name, where, classOf[CometActor]) You can now do: findType[CometActor](name, where) There were some methods private to Lift that I migrated as well, but those shouldn't affect your apps. Thanks, --j --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Testing for well-formed XML
Folks,
One of the concerns raised at the Lift Workshop on Saturday was that
ill-formed XML files in your templates will fail at run time instead of
compile time, often with cryptic errors.
To correct for this, I've added a simple test to lift-archetype-basic and
lift-archetype-blank that will test all *.html and *.xml files in your
src/main/webapp directory (and its subdirectories) to make sure they can all
be loaded by Scala's XML parser. If they can't be loaded the test will fail
and notify you which files couldn't be loaded and why.
These tests run during Maven's 'test' phase. This phase is required before
the 'package', 'install', or 'deploy' phases can run. Unfortunately, the
'jetty:run' phase only requires 'test-compile', not 'test'. If you want the
test to run before starting Jetty, you'll have to specify it manually: 'mvn
test jetty:run' (or 'mvn install jetty:run', etc).
The test is available on any new projects created with Lift's archetypes. To
add the test to your own project, the code is included below. It's a simple
JUnit test. If you used a previous version of the archetypes to start your
project, you can throw it into AppTest.scala
Enjoy,
--j
/**
* Tests to make sure the project's XML files are well-formed.
*
* Finds every *.html and *.xml file in src/main/webapp (and its
* subdirectories) and tests to make sure they are well-formed.
*/
def testXml() = {
var failed: List[java.io.File] = Nil
def wellFormed(file: java.io.File) {
if (file.isDirectory)
for (f - file.listFiles) wellFormed(f)
if (file.isFile (file.getName.endsWith(.html) ||
file.getName.endsWith(.xml))) {
try {
scala.xml.XML.loadFile(file)
} catch {
case e: org.xml.sax.SAXParseException = failed = file :: failed
}
}
}
wellFormed(new java.io.File(src/main/webapp))
val numFails = failed.size
if (numFails 0) {
val fileStr = if (numFails == 1) file else files
val msg = Malformed XML in + numFails + + fileStr + : +
failed.mkString(, )
println(msg)
fail(msg)
}
}
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[Lift] Re: Testing for well-formed XML
Oops, it just test *.htm and *.xhtml files as well. Updated code below.
--j
/**
* Tests to make sure the project's XML files are well-formed.
*
* Finds every *.html and *.xml file in src/main/webapp (and its
* subdirectories) and tests to make sure they are well-formed.
*/
def testXml() = {
var failed: List[java.io.File] = Nil
def handled(file: String) =
file.endsWith(.html) || file.endsWith(.xml) ||
file.endsWith(.htm) || file.endsWith(.xhtml)
def wellFormed(file: java.io.File) {
if (file.isDirectory)
for (f - file.listFiles) wellFormed(f)
if (file.isFile handled(file.getName)) {
try {
scala.xml.XML.loadFile(file)
} catch {
case e: org.xml.sax.SAXParseException = failed = file :: failed
}
}
}
wellFormed(new java.io.File(src/main/webapp))
val numFails = failed.size
if (numFails 0) {
val fileStr = if (numFails == 1) file else files
val msg = Malformed XML in + numFails + + fileStr + : +
failed.mkString(, )
println(msg)
fail(msg)
}
}
On Wed, Nov 26, 2008 at 4:58 PM, Jorge Ortiz [EMAIL PROTECTED] wrote:
Folks,
One of the concerns raised at the Lift Workshop on Saturday was that
ill-formed XML files in your templates will fail at run time instead of
compile time, often with cryptic errors.
To correct for this, I've added a simple test to lift-archetype-basic and
lift-archetype-blank that will test all *.html and *.xml files in your
src/main/webapp directory (and its subdirectories) to make sure they can all
be loaded by Scala's XML parser. If they can't be loaded the test will fail
and notify you which files couldn't be loaded and why.
These tests run during Maven's 'test' phase. This phase is required before
the 'package', 'install', or 'deploy' phases can run. Unfortunately, the
'jetty:run' phase only requires 'test-compile', not 'test'. If you want the
test to run before starting Jetty, you'll have to specify it manually: 'mvn
test jetty:run' (or 'mvn install jetty:run', etc).
The test is available on any new projects created with Lift's archetypes.
To add the test to your own project, the code is included below. It's a
simple JUnit test. If you used a previous version of the archetypes to start
your project, you can throw it into AppTest.scala
Enjoy,
--j
/**
* Tests to make sure the project's XML files are well-formed.
*
* Finds every *.html and *.xml file in src/main/webapp (and its
* subdirectories) and tests to make sure they are well-formed.
*/
def testXml() = {
var failed: List[java.io.File] = Nil
def wellFormed(file: java.io.File) {
if (file.isDirectory)
for (f - file.listFiles) wellFormed(f)
if (file.isFile (file.getName.endsWith(.html) ||
file.getName.endsWith(.xml))) {
try {
scala.xml.XML.loadFile(file)
} catch {
case e: org.xml.sax.SAXParseException = failed = file :: failed
}
}
}
wellFormed(new java.io.File(src/main/webapp))
val numFails = failed.size
if (numFails 0) {
val fileStr = if (numFails == 1) file else files
val msg = Malformed XML in + numFails + + fileStr + : +
failed.mkString(, )
println(msg)
fail(msg)
}
}
--~--~-~--~~~---~--~~
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-~--~~~~--~~--~--~---
[Lift] Re: JsCmd
You're almost there. The second parameter to ajaxCheckbox is a function that
gets called on the server when the checkbox changes:
SHtml.ajaxCheckbox(thing.isActive, (toggled: Boolean) =
{thing.setActive(toggled); Noop})
The Noop is needed because ajaxCheckbox expects a Boolean = JsCmd function.
(I can't find a good reason for it needing a JsCmd though... Shouldn't it
just be Boolean = Any or better yet Boolean = Unit?) Howver, you can
replace thing.setActive(toggled) with whatever code you want to run when
the checkbox is toggled. Here, toggled contains the state of the checkbox.
Likewise ajaxSelect:
val daysOfWeek = List(Monday, Tuesday, Wednesday, Thursday,
Friday,
Saturday, Sunday).map(x = (x, x))
SHtml.ajaxSelect(daysOfWeek, Full(Monday), (opt: String) =
{thing.setDayOfWeek(opt); Noop})
The second parameter is the default value. The opt in the third parameter
will correspond to the selected day.
--j
On Tue, Nov 25, 2008 at 4:11 AM, Charles F. Munat [EMAIL PROTECTED] wrote:
I want to update an attribute on a model object in the database via AJAX
when a checkbox is clicked on a page. I presume that ajaxCheckbox is for
this purpose.
Can anyone quickly give me an example of how it works?
If I have an attribute called isActive, how would I create an
ajaxCheckbox that would call a method on the server when the checkbox is
clicked to set isActive to true or false, depending on the state of the
checkbox after the click?
bind(mine, xhtml,
isActive - SHtml.ajaxCheckbox(thing.isActive, ???)
What about selecting the day of the week from an ajaxSelect and updating
dayOfWeek. Or, finally, updating a text field on blur and setting the
user_name.
Examples would really help.
I am pretty desperate to have this done today, and several hours of
playing with various combinations has left me befuddled. Doesn't help
that it's 4 AM.
Any and all help very greatly appreciated.
Thanks,
Chas.
--~--~-~--~~~---~--~~
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Lift group.
To post to this group, send email to liftweb@googlegroups.com
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-~--~~~~--~~--~--~---
[Lift] Re: JsCmd
And David beat me to it... Oh well :)
On Tue, Nov 25, 2008 at 5:04 AM, Jorge Ortiz [EMAIL PROTECTED] wrote:
You're almost there. The second parameter to ajaxCheckbox is a function
that gets called on the server when the checkbox changes:
SHtml.ajaxCheckbox(thing.isActive, (toggled: Boolean) =
{thing.setActive(toggled); Noop})
The Noop is needed because ajaxCheckbox expects a Boolean = JsCmd
function. (I can't find a good reason for it needing a JsCmd though...
Shouldn't it just be Boolean = Any or better yet Boolean = Unit?) Howver,
you can replace thing.setActive(toggled) with whatever code you want to
run when the checkbox is toggled. Here, toggled contains the state of the
checkbox.
Likewise ajaxSelect:
val daysOfWeek = List(Monday, Tuesday, Wednesday, Thursday,
Friday,
Saturday, Sunday).map(x = (x, x))
SHtml.ajaxSelect(daysOfWeek, Full(Monday), (opt: String) =
{thing.setDayOfWeek(opt); Noop})
The second parameter is the default value. The opt in the third parameter
will correspond to the selected day.
--j
On Tue, Nov 25, 2008 at 4:11 AM, Charles F. Munat [EMAIL PROTECTED] wrote:
I want to update an attribute on a model object in the database via AJAX
when a checkbox is clicked on a page. I presume that ajaxCheckbox is for
this purpose.
Can anyone quickly give me an example of how it works?
If I have an attribute called isActive, how would I create an
ajaxCheckbox that would call a method on the server when the checkbox is
clicked to set isActive to true or false, depending on the state of the
checkbox after the click?
bind(mine, xhtml,
isActive - SHtml.ajaxCheckbox(thing.isActive, ???)
What about selecting the day of the week from an ajaxSelect and updating
dayOfWeek. Or, finally, updating a text field on blur and setting the
user_name.
Examples would really help.
I am pretty desperate to have this done today, and several hours of
playing with various combinations has left me befuddled. Doesn't help
that it's 4 AM.
Any and all help very greatly appreciated.
Thanks,
Chas.
--~--~-~--~~~---~--~~
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 [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/liftweb?hl=en
-~--~~~~--~~--~--~---
[Lift] Re: Error on compile with 2.7.2
Anytime the compiler throws an exception it's a bug and should be filed.
On Tue, Nov 18, 2008 at 3:23 PM, Charles F. Munat [EMAIL PROTECTED] wrote:
One would think so, and maybe it is, but the problem was actually caused
by two errors in my code: a missing ) and then later an extra ) which
turned what should have been a compile time error into a runtime error.
That said, do you think there is a problem with the compiler?
Chas.
Jorge Ortiz wrote:
That's a bug in the Scala compiler.
Try to comment out code and reduce the bug to it's minimal form to file
a bug report: http://lampsvn.epfl.ch/trac/scala/
--j
On Tue, Nov 18, 2008 at 2:44 PM, Charles F. Munat [EMAIL PROTECTED]
mailto:[EMAIL PROTECTED] wrote:
I changed the Scala version to 2.7.2, blew away .m2, did an mvn
clean,
and I now get the error below when I try to compile. I note that none
of
the files concerned are in my app, so I presume this is a Lift
thing...
Any ideas? I'll keep messing with it.
[INFO] [compiler:compile]
[INFO] Nothing to compile - all classes are up to date
[INFO] [scala:compile {execution: default}]
[INFO] suggestion: remove the scalaVersion from pom.xml
[INFO] Compiling 28 source files to
/private/var/www/mine/mine-app/target/classes
[WARNING] Exception in thread main
java.lang.ArrayIndexOutOfBoundsException: 30
[WARNING] at
scala.tools.nsc.ast.TreeGen.mkTuple(TreeGen.scala:227)
[WARNING] at
scala.tools.nsc.typechecker.Infer$class.actualArgs(Infer.scala:62)
[WARNING] at
scala.tools.nsc.Global$analyzer$.actualArgs(Global.scala:284)
[WARNING] at
scala.tools.nsc.typechecker.Typers$Typer.doTypedApply(Typers.scala:1733)
[WARNING] at
scala.tools.nsc.typechecker.Typers$Typer$$anonfun$tryTypedApply$1$1.apply(Typers.scala:2566)
[WARNING] at
scala.tools.nsc.typechecker.Typers$Typer$$anonfun$tryTypedApply$1$1.apply(Typers.scala:2566)
[WARNING] at
scala.tools.nsc.typechecker.Typers$Typer.silent(Typers.scala:588)
[WARNING] at
scala.tools.nsc.typechecker.Typers$Typer.tryTypedApply$1(Typers.scala:2566)
[WARNING] at
scala.tools.nsc.typechecker.Typers$Typer.typedApply$1(Typers.scala:2617)
[WARNING] at
scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:3219)
[WARNING] at
scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:3323)
[WARNING] at
scala.tools.nsc.typechecker.Typers$Typer.typedArg(Typers.scala:1621)
[WARNING] at
scala.tools.nsc.typechecker.Typers$Typer.typedArgToPoly$1(Typers.scala:1789)
[WARNING] at
scala.tools.nsc.typechecker.Typers$Typer$$anonfun$27.apply(Typers.scala:1798)
[WARNING] at
scala.tools.nsc.typechecker.Typers$Typer$$anonfun$27.apply(Typers.scala:1798)
[WARNING] at scala.List$.map2(List.scala:326)
[WARNING] at
scala.tools.nsc.typechecker.Typers$Typer.doTypedApply(Typers.scala:1798)
[WARNING] at
scala.tools.nsc.typechecker.Typers$Typer.typedApply$1(Typers.scala:2619)
[WARNING] at
scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:3219)
[WARNING] at
scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:3323)
[WARNING] at
scala.tools.nsc.typechecker.Typers$Typer.typedArg(Typers.scala:1621)
[WARNING] at
scala.tools.nsc.typechecker.Typers$Typer$$anonfun$typedArgs$1.apply(Typers.scala:1624)
[WARNING] at
scala.tools.nsc.typechecker.Typers$Typer$$anonfun$typedArgs$1.apply(Typers.scala:1624)
[WARNING] at scala.List$.loop$1(List.scala:293)
[WARNING] at scala.List$.mapConserve(List.scala:310)
[WARNING] at scala.List$.loop$1(List.scala:297)
[WARNING] at scala.List$.mapConserve(List.scala:310)
[WARNING] at scala.List$.loop$1(List.scala:297)
[WARNING] at scala.List$.mapConserve(List.scala:310)
[WARNING] at scala.List$.loop$1(List.scala:297)
[WARNING] at scala.List$.mapConserve(List.scala:310)
[WARNING] at scala.List$.loop$1(List.scala:297)
[WARNING] at scala.List$.mapConserve(List.scala:310)
[WARNING] at scala.List$.loop$1(List.scala:297)
[WARNING] at scala.List$.mapConserve(List.scala:310)
[WARNING] at scala.List$.loop$1(List.scala:297)
[WARNING] at scala.List$.mapConserve(List.scala:310)
[WARNING] at scala.List$.loop$1(List.scala:297)
[WARNING] at scala.List$.mapConserve(List.scala:310)
[WARNING] at scala.List$.loop$1(List.scala:297)
[WARNING] at scala.List$.mapConserve(List.scala:310)
[WARNING] at scala.List$.loop$1(List.scala:297)
[WARNING] at scala.List$.mapConserve(List.scala:310
[Lift] [ANN] Lift nightlies upgraded to Scala 2.7.2
I've just upgraded Lift's trunk to work with the newest release of Scala (2.7.2), Specs (1.4.0), and Scalacheck (1.5). These changes are available in the source code immediately, and should be reflected in the binaries posted to http://scala-tools.org/repo-snapshots/ in about an hour or so. Use Lift 0.10-SNAPSHOT for compatibility with Scala 2.7.2. There should be no breaking changes to source code that uses Lift. As always with new Scala releases, binary incompatibilities will exist. You should clean out any binaries compiled with Scala 2.7.1 and recompile with Scala 2.7.2. For existing Lift projects using 0.10-SNAPSHOT, this means updating the relevant line in your pom.xml file to read scala.version2.7.2/scala.version, then running 'mvn clean install'. Lift projects that use Specs or Scalacheck may be subject to breaking changes, as those APIs have changed. This upgrade should greatly improve Lift's compatibility with the Scala plugins for Eclipse, NetBeans, and IntelliJ IDEA. Please report any issues to the Lift mailing list (liftweb@googlegroups.com ). Thanks, --j --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: SHtml form inputs and attributes/labels
Try: SHtml.text(user.name, user.name = _) % (size, 24) % (maxlength, 48) % (id, user_name) % (title, Enter your name) That should work. --j On Mon, Nov 17, 2008 at 12:21 PM, Charles F. Munat [EMAIL PROTECTED] wrote: I spend a lot of time writing % new UnprefixedAttribute(...) to add attributes to SHtml form elements (input, textarea, select, etc.). It would be nice if the relevant SHtml methods would permit optional extra parameters in the form of tuples where contents are name-value pairs that get translated to attributes. I don't think this would be a breaking change. In other words, instead of: SHtml.text(user.name, user.name = _) % new UnprefixedAttribute(size, 24, new UnprefixedAttribute(maxlength, 48, new UnprefixedAttribute(id, user_name, new UnprefixedAttribute(title, Enter your name, Null) ) ) ) I could do: SHtml.text(user.name, user.name = _, (size, 24), (maxlength, 48), (id, user_name), (title, Enter your name) ) Which is a hell of a lot cleaner and faster, and I don't have to import UnprefixedAttribute and remember the % and the new keywords. Or is this already possible and I'm missing it? I have an online survey with 43 questions on 5 pages involving more than 150 database fields. The snippet is already over 700 lines and growing. It's just unmanageable. Another thing: the label element is a very important part of accessibility to persons with disabilities, but it needs a for attribute that references the id attribute of the input element (or textarea, etc.). The current SHtml output (unlike Rails) does not generate an id attribute, so they have to be added by hand. Has anyone given any thought to automatically-generated id elements on form fields? Better yet, some way to integrate labels? Ideally, I would do something like this: survey:name label=Your name/ Or this: survey:nameYour name/survey:name and bind would allow me to generate this: label for=id123Your name input type=text id=id123 value= name=F1226951216428645000_I0G/ /label What do others think? Is this already possible? Chas. --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Recommended tools ?
To search the wiki, I suggest using using the site:liftweb.net keyword in google. That will search all pages within liftweb.net We should probably change the wiki search to do that automatically. The built-in MediaWiki search is pathetic anyway. --j On Sat, Nov 15, 2008 at 8:53 AM, Oscar Picasso [EMAIL PROTECTED]wrote: Hi, Which tools would you recommend to work for a lift project, and more generally with scala? The requirement being that the project also uses maven. I have tried the Eclipse plugin a number of times and I found it too unstable. The last Intellij IDEA plugin is decent, I was considering switching to IDEA. Howver I ran lately in some issues. The more important being that if I define implicits somewhere their containing folder keep loading... forever. I could use emacs but I would like some pretty formatting, code completion and error checking. On a scala list post I read David P. explaining that there are a number of decent tools to work with lift. Which ones? BTW: the lift wiki search does not work. It always returns a *No such special page*. Oscar --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Concatenating lists of nodes
A NodeSeq is really just a Seq[Node]. And a List[Node] is also a Seq[Node]. Hence a List[Node] is a NodeSeq. scala import scala.xml.NodeSeq import scala.xml.NodeSeq scala val n: NodeSeq = List(spanA/span, spanB/span, spanC/span) n: scala.xml.NodeSeq = spanA/spanspanB/spanspanC/span --j On Thu, Nov 13, 2008 at 10:14 AM, Charles F. Munat [EMAIL PROTECTED] wrote: If I have a list thus: List(spanA/span,spanB/span,spanC/span) How can a get a NodeSeq thus from this: spanA/spanspanB/spanspanC/span I'm sure this is drop-dead simple, but it's still not obvious to me... Thanks, Chas. --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Olio
There's a new Apache Incubator project called Olio: Olio is a is a web2.0 toolkit to help evaluate the suitability, functionality and performance of web technologies. Olio defines an example web2.0 application ( an events site somewhat like yahoo.com/upcoming) and provides three initial implementations : PHP, Java EE and RubyOnRails (ROR). The toolkit also defines ways to drive load against the application in order to measure performance. We encourage alternate implementations of the application by either completely re-writing the application using a different language (say python), higher-level frameworks (such as CakePHP http://cakephp.org/) Anyone interested in taking a stab at a Lift implementation of this? --j --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Latest NetBeans plugin and NB 6.5 RC2 is wicked great
Lift on 2.7.2 works just fine as of RC3. I unfortunately haven't been keeping up with the flurry of RCs. What RC is the Eclipse plugin currently released against? I can update the branch of Lift tracking 2.7.2 to that RC. But whenever 2.7.2 is released (any day now *crosses fingers*) Lift will upgrade as soon as possible. --j On Fri, Nov 7, 2008 at 11:21 AM, Miles Sabin [EMAIL PROTECTED] wrote: On Fri, Nov 7, 2008 at 6:31 PM, Tim Perrett [EMAIL PROTECTED] wrote: Out of interest - what's going on with the eclipse support these days? Is netbeans superior for scala? Or should I just stick to command line and textmate? I'm subscribed to this list, so if there are Lift specific problems I should see them fairly promptly. My understanding is that Lift on 2.7.2 is still a work in progress, so seeing as the Eclipse plugin requires 2.7.2 it might be early days for that combination. As ever I'm keen to make the Lift and Eclipse experience as pain free as possible, but as ever I need help from the Lift community. Please try Lift with 2.7.2 and Eclipse and get your feedback to me (tho' obviously generic 2.7.2 non-Eclipse issues should go to the EPFL Trac as usual). Cheers, Miles -- Miles Sabin tel:+44 (0)1273 720 779 mobile: +44 (0)7813 944 528 skype: milessabin --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: PayPal Example Application
I've renamed the PayPalIPN trait to PaypalIPN. Macs have unfortunate issues with case sensitive file names. The generated .class files for the PayPalIPN trait were clashing with the PaypalIPN singleton. I've also renamed the PayPalPDT trait to PaypalPDT for consistency. --j On Fri, Nov 7, 2008 at 9:51 AM, Dano [EMAIL PROTECTED] wrote: I have been working with David Pollak on example code which exercises the Lift paypal library. This exercise is a prelude to using the paypal library within buyafeature.com to allow customers to pay for playing private Buy A Feature games. The code for this example can be downloaded from http://tunaforcats.com/paypal-example.tar. The main touchpoints in the paypal library are the PayPalPDT and PayPalIPN objects. The PayPalPDT object supports the Payment Data Transfer transaction processing. This process is illustrated by the diagram available at https://www.paypal.com/en_US/i/IntegrationCenter/scr/scr_ppPDTDiagram_513x282.gif and further described at https://www.paypal.com/IntegrationCenter/ic_pdt.html (you will need to sign up for a developer account to see this and other paypal URLs – go to developer.paypal.com to get a developer account - it's free). Step 4 in the diagram triggers a call to pdtResponse function. This is where you can receive all of the details about the transaction your user completed using PayPal. The PayPalIPN object supports Instant Payment Notification processing. This process is illustrated by the diagram at https://www.paypal.com/en_US/i/IntegrationCenter/scr/scr_ppIPNDiagram_555x310.gif and further described at https://www.paypal.com/IntegrationCenter/ic_ipn.html. This allows for asynchronous notification of the payment separate from the PDT flow above. Step 4 in the diagram triggers a call to the PayPalIPN actions function. Going to the paypal example code, in Boot.scala you will see objects created for both PDT and IPN processing. BAFOPayPalPDT utilizes the PayPalPDT trait to redirect the user to a particular page in the sample application. BAFOPayIPN utilizes the PayPalIPN trait to capture the paypal transaction information and persist it in the database. The classes I am using to persist to the paypal transaction to the database are borrowed from Fowler's Account pattern. Basically there is an AccountTransaction which represents the paypal transaction. The Account class in this example is being used to represent an inventory of 'game credits' which are available to the user in advance of playing a game. The credit (or debit) from an account is represented by the AccountEntry class. All of these classes are housed within model directory within the paypal example. The paypal example is driven by logging into the application and going to the 'Account Admin' page. This page allows you to manage a set of accounts (create, view, edit, delete). Once you create an account, you 'buy' credits by selecting the 'view' link associated with an existing account. This will bring you a page which shows a familiar looking 'Buy Now' button. This is the button which triggers the paypal flow described above. It will debit from the paypal buyer account you specify and credit to the merchant account you have previously setup. Also, for this to work, you will need to be logged into your developer paypal account (details below). After going thru the paypal process, you should end up at the account admin page where you can look to see if the account was credited. You can also go to developer.paypal.com to see if your buyer account was debited and your merchant account was credited. Running the Example In order to bring up your lift app, do the following: 0) Extract file files from the paypal-example tarball to a location to your liking. The top-level directory should be called paypal-example. 1) Create developer paypal account – Go to developer.paypal.com and hit the Sign Up Now button 2) Create merchant and buyer accounts - Go to Test Accounts and create the merchant/buyer accounts using the Preconfigured link. 3) Stay logged into your developer account – this is required for the paypal integration to work with your lift app. 4) Setup your properties file – in the src/main/resources directory there is a file called default.props. Copy this file to username.props where username is the OS user you are logged in as when you run the lift app. You will need to follow the instructions in the top comment section, fill in the paypal.authToken and specify the paypal.ipnHost property with your host and path (i.e. http://hostname.com:port). 5) Build and run – go to the paypal-example directory and run mvn jetty:run Thanks to David for helping me to get this to work. Please let us know if you have questions or suggestions. There is probably a lot more that could be done with the example to improve it or make it easier to understand. Dan
[Lift] Re: MIME Types?
Yeah, that's a really bad backwards incompatibility, but fortunately the fix is fairly easy: SHtml.submit(Submit, println(here)) I'd encourage you to stay on SNAPSHOT. The APIs might suffer a little instability (that are always announced to the mailing list) but there are several in-production sites on SNAPSHOT, so the code itself is pretty rock solid. --j On Wed, Oct 22, 2008 at 12:16 AM, tacobandit [EMAIL PROTECTED] wrote: David, I appreciate the response. It was very helpful. Your suspicions were right, and this is not an issue for me in the current SNAPSHOT. However, given the instability of the SNAPSHOT I'm not sure this does me much good. I can't figure out any workarounds to apparent bugs which I would are show stoppers. For example, both SHtml.Submit(Submit, () = println(here)) and SHtml.Submit(Submit, x = println(here)) silently don't do anything. Which is fine, I mean I don't expect the snapshot to be stable. But what might I do? Would 0.8 work for me? Or should I *shudder* use a less scala friendly framework until Lift is ready? Eric --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: MIME Types?
On Wed, Oct 22, 2008 at 1:28 AM, tacobandit [EMAIL PROTECTED] wrote: Jorge, Awesome thanks. I guess that should have been obvious to me looking at the docs if I knew Scala better? The method signature was = Any.. which i took to mean a Function0 which I tried to do as () = xyz. But obviously I read it wrong... This, unfortunately, is a tricky one for even experienced users of Scala. Anything you could throw at it conforms to = Any. What = T means is, give me a T, but I promise not to evaluate it until I need it. In this case, give me an Any, but I promise not to evaluate it until I need it. This makes it safe to pass in a println and know that it won't get evaluated until it's needed. On the flipside, you can also pass in an expression that makes a Function0. In this case, evaluating the expression means -making- the Function0, not -executing- it, which is the bug you were seeing. I don't mind sticking with the latest and greatest, especially if it's proven stable. But one thing that seems missing from my hunting is a thorough example site, that I can pretty much refer to for all the basics.. Is the code for demo.liftweb.net available? Or something similar? That's updated in tandem with the framework? I think that could keep me from spinning my wheels on some of these things like the Submit trick.. Yes, there certainly is. Check out liftweb/sites in the git repository. There are several sample Lift sites, including demo.liftweb.net (which is liftweb/sites/example I believe). Happy Lifting! --j On Oct 22, 12:36 am, Jorge Ortiz [EMAIL PROTECTED] wrote: Yeah, that's a really bad backwards incompatibility, but fortunately the fix is fairly easy: SHtml.submit(Submit, println(here)) I'd encourage you to stay on SNAPSHOT. The APIs might suffer a little instability (that are always announced to the mailing list) but there are several in-production sites on SNAPSHOT, so the code itself is pretty rock solid. --j On Wed, Oct 22, 2008 at 12:16 AM, tacobandit [EMAIL PROTECTED] wrote: David, I appreciate the response. It was very helpful. Your suspicions were right, and this is not an issue for me in the current SNAPSHOT. However, given the instability of the SNAPSHOT I'm not sure this does me much good. I can't figure out any workarounds to apparent bugs which I would are show stoppers. For example, both SHtml.Submit(Submit, () = println(here)) and SHtml.Submit(Submit, x = println(here)) silently don't do anything. Which is fine, I mean I don't expect the snapshot to be stable. But what might I do? Would 0.8 work for me? Or should I *shudder* use a less scala friendly framework until Lift is ready? Eric --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Lifecycle of a Lift Snippet Class
To add to Derek's explanation, if you want to keep some server-side state
that gets updated with AJAX calls, take a look at some of the stuff in
liftweb/sites/example. You can use a SessionVar (as in Count.scala) or a
StatefulSnippet (as in CountGame.scala or ArcChallenge.scala).
--j
On Wed, Oct 22, 2008 at 1:27 PM, didi [EMAIL PROTECTED] wrote:
Hello,
im Playing around with Lift Snippets and die Ajax Examples provided in
the Demo.
I've learned from the FAQ the a Snippet default lives for a request
time.
Now i have following Ajax example:
class HelloFormAjax {
def sample = {
var cnt = 0
span
{
a(() = {cnt = cnt + 1; SetHtml(cnt_id, Text( cnt.toString))},
spanClick me to increase the count
(currently span id='cnt_id'0/span)/span)
}/span
}
}
Here is what i observed using Java Remote Debugger connecting my
Eclipse to Jetty:
The cnt = 0 expression is executed once a request (Reload of the
Browser Page).
Now I wonder where the cnt var lives during the Ajax calls.
Thanks
Christian
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[Lift] Re: Lift Scala 2.7.2-rc3
Sasha, I've been sitting on a bunch of unpushed commits to the RC3 branch. Due to a bug in GitHub, the lift twitter stream gets awfully spammed every time I do a push. I've been meaning to push in the middle of the night when some twitter spam hopefully won't be as annoying, but keep forgetting. I'll set a reminder and push the changes around midnight PST tonight. RC1 and RC2 should work fine though. --j On Tue, Oct 21, 2008 at 2:49 PM, Sasha Kazachonak [EMAIL PROTECTED]wrote: Hi lifters! Seems like scala-2.7.2.RC3 lift source branch isn't compatible with scala 2.7.2.RC3. When I changed scala.version to 2.7.2-rc3 in pom.xmlhttp://github.com/dpp/liftweb/tree/scala-2.7.2.RC3/pom.xmland changed line 42 of CometActor like said therehttp://groups.google.com/group/liftweb/browse_thread/thread/f235c4c38c54e756/06a024f6c05b6f69I was able to build it. --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: addDispatchBefore case matching 4 times per request
It's a Scala gotcha, unfortunately.
Anything you put in the matching part of a pattern matching expression
should be side-effect free. (Side effects are things like printing to
screen, writing to files, changing a database, changing global state, etc.)
Because of the way the compiler optimizes pattern matching expressions, it
can't guarantee that they'll only be run once.
Your second approach is the right one. Put all side-effecting expressions in
the body of the pattern match.
--j
On Sun, Oct 19, 2008 at 2:31 AM, Tim Perrett [EMAIL PROTECTED] wrote:
Thats strange. changing the code to:
LiftRules.addDispatchBefore {
case r @ RequestState(paypal:: ipn :: Nil, , PostRequest)
= () = {
PaypalIPN(r)
Full(XmlResponse(complete /))
}
}
and then it only gets called once. Very strange - why does it do that?
Cheers
Tim
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[Lift] Re: JPA questions (was Re: SnippetFailure)
Derek, With the upcoming release of 2.7.2, you can update all this classOf[T] stuff to use scala.reflect.Manifest[T], which handles all that stuff for you almost automagically. I've been meaning to blog about this, but haven't found the time. The short example is: def find[A](id: Any)(implicit m: scala.reflect.Manifest[A]) = em.find[A](m.erasure, id).asInstanceOf[A] Which can be invoked as: val user = find[User](userId) The compiler will fill in the implicit Manifest parameter for you. Manifest represents a Scala type. You can test two Manifests for subtype and supertype relationships. You can also call erasure on a Manifest to get the Java Class corresponding to the runtime erasure of that type. Manifests are undocumented and experimental, so proceed with caution. Eventually they'll be the backbone of a native Scala reflection API (yay!) --j On Tue, Oct 14, 2008 at 6:13 PM, Derek Chen-Becker [EMAIL PROTECTED]wrote: You can just do Model.find(classOf[User], userId) and the type on the method will be inferred. Any time you see a Class[A] parameter, it wants the result of a classOf[...]. Derek On Tue, Oct 14, 2008 at 5:52 PM, Charles F. Munat [EMAIL PROTECTED] wrote: A question from the JPADemo... How does one use this: def find[A](clazz: Class[A], id: Any) = em.find[A](clazz, id).asInstanceOf[A] If I have a User model and I want to use find on the EntityManager, what goes where the *** is below: val user = Model.find[User]( ***, userId) Thanks, Chas. --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: A stupid question
Also check out CanSpec.scala to get an idea of how Cans can be used.
--j
On Wed, Oct 15, 2008 at 9:33 AM, David Pollak [EMAIL PROTECTED] wrote:
Charles,
A Can is a container... it can contain a thing or be empty.
You can transform the contents of a Can from one thing to another using
map(). map() on Can, Option, List is exactly the same as map() on Array in
Ruby:
irb(main):004:0 [1,2,3].map{|v| v.to_s + Cats}
= [1 Cats, 2 Cats, 3 Cats]
This is just like in Scala:
scala List(1,2,3).map(v = v.toString + Cats)
res0: List[java.lang.String] = List(1 Cats, 2 Cats, 3 Cats)
In Ruby, when you access the first element of an Array that has no
elements, you get 'nil' back. In Scala, you get an exception. This allows
you to tell the difference between [nil][0] and [][0] which are the same in
Ruby.
The most syntactically pleasing way of extracting things from List, Can,
Option in Scala is the for comprehension:
scala for (a - Some(3);
|b - Some(4)) yield a * b
res1: Option[Int] = Some(12)
Does that help?
Thanks,
David
Charles F. Munat wrote:
Thanks. I have read everything I could find on this but I think I'm just
a bit dense about it. Probably, it's just unfamiliarity with the syntax
of Scala as a whole and functional programming in general (or maybe I'm
just stupid). Hopefully, at some point the light bulb will come on and
this will seem easy. I'll read the blog post.
Chas.
David Pollak wrote:
Please also
see:http://blog.lostlake.org/index.php?/archives/50-The-Scala-Option-class-and-how-lift-uses-it.html
Can[T] is just like Option[T]
Marius wrote:
to get stuff out of a can you can do:
1. Pattern matching
having c a Can[String]
c match {
case Full(value) = //do something with the value
case _ =
}
2. call open_!(if you're sure your can is not empty) or openOr
Br's,
Marius
On Oct 15, 3:22 am, Charles F. Munat [EMAIL PROTECTED] [EMAIL
PROTECTED] wrote:
I must be very dense, but these cans are kicking my butt (kicking my
can?). No matter what I do, I seem to end up with everything back in the
can! I just... want... to get... the goodies... OUT!
An example:
How do I extract the URI of the current page from S.request?
I am currently doing something immensely stupid and wrong like this:
S.request.toList.head.location.toList.head.createDefaultLink.toList.head.text
I *know* this is way wrong, but I'm not clever enough, apparently, to
figure out the puzzle, despite reading through the Can code repeatedly.
I figure the above works only because what I'm looking for is there,
which sort of defeats the purpose of the cans...
Can anyone help? This is driving me insane.
Chas.
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[Lift] Re: Welcome Derek to the Lift committers
Awesome! On Mon, Oct 6, 2008 at 10:12 AM, David Pollak [EMAIL PROTECTED] wrote: Folks, Derek Chen-Becker has just joined the Lift committers. One might ask What took so long? Derek's been an awesome contributor to the Lift community for more than a year and it's good to see that he's going to be contributing the the Lift codebase. Woo Hoo and Welcome. Thanks, David -- Lift, the simply functional web framework http://liftweb.net Collaborative Task Management http://much4.us Follow me: http://twitter.com/dpp Git some: http://github.com/dpp --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Simple Build Tool
I don't see a downside to providing an alternative build system to people who are very Maven-averse (as long as I don't have to maintain it!, heh) But yeah, replacing Maven at this point seems unwise, unless there are very compelling reasons. --j On Sun, Oct 5, 2008 at 12:15 PM, David Pollak [EMAIL PROTECTED] wrote: On Sun, Oct 5, 2008 at 10:59 AM, Tim Perrett [EMAIL PROTECTED] wrote: Guys, Check this out: http://code.google.com/p/simple-build-tool/ It appeared a couple of days ago - im wondering if its something we could customize to make starting lift projects easier? Its all written in scala so should be easily extendable. I am very reluctant to introduce an additional build system to Lift. If this tool is built on top of the Maven infrastructure but uses Scala files to define build rules rather than using XML, I'm interested in learning more. If it's yet another build tool... well... I need to take a better look, but thought id float the idea Cheers Tim -- Lift, the simply functional web framework http://liftweb.net Collaborative Task Management http://much4.us Follow me: http://twitter.com/dpp Git some: http://github.com/dpp --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Dates from database
A MappedDateTime wraps a java.util.Date, just like a MappedInt wraps an Int. There is an implicit conversion that automatically turns MappedDateTime into a Date, or you can invoke it directly by using the is method. --j On Sat, Oct 4, 2008 at 1:47 PM, Charles F. Munat [EMAIL PROTECTED] wrote: If I have a MappedDateTime column in the database, how do I format the date and/or time when it comes back from the database? There don't seem to be any examples of this in the example sites. I have a dateFormatter, but it takes an instance of java.util.Date, I think. How do I convert the date/time as output by the mapper into something I can format? Did I miss this in the code somewhere? Thanks. Chas. --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Please Welcome Al Thompson to the Lift committers
Awesome! Welcome, Al. --j On Thu, Oct 2, 2008 at 5:14 PM, David Pollak [EMAIL PROTECTED]wrote: Folks, I've know Al Thompson for longer than any of the other Lift committers. Cast you mind back to '97... I was doing crazy things with browser-based, multi-user spreadsheets. Al was my technical liaison at Sun. Now I'm doing Lift. Al is joining the Scala and Lift communities. He's offered to help out with the RDBMS drivers. So, welcome Al and I'm looking forward to cool things from you. Thanks, David -- Lift, the simply functional web framework http://liftweb.net Collaborative Task Management http://much4.us Follow me: http://twitter.com/dpp Git some: http://github.com/dpp --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: [ANN] Compiling Lift with Scala 2.7.2.RC2 and Eclipse Plugin
Can you try the 1.5 branch of Git? (Is anyone else getting this problem?) --j On Thu, Sep 25, 2008 at 2:40 PM, DavidV [EMAIL PROTECTED] wrote: I'm using the latest version - 1.6.0.2 for windows. I got it from this website: http://code.google.com/p/msysgit/downloads/list I figured it was OK since all the versions are listed as Beta... --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] [ANN] Compiling Lift with Scala 2.7.2.RC2 and Eclipse Plugin
DISCLAIMER Nothing is this e-mail is meant to imply that any future public version of Lift will compile with Scala 2.7.2. At the moment, all future public versions of Lift will compile with Scala 2.7.1 until DavidP says otherwise. /DISCLAIMER Here are the instructions for compiling Lift under Scala 2.7.2.RC2 and (optionally) working with the RC2 release of the Eclipse plugin. You will need to compile Lift from source. These instructions were tested with: java -version java version 1.5.0_13 Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_13-b05-237) Java HotSpot(TM) Client VM (build 1.5.0_13-119, mixed mode, sharing) mvn -version Maven version: 2.0.8 Java version: 1.5.0_13 OS name: mac os x version: 10.5.4 arch: i386 Family: unix git --version git version 1.5.5 (optional) Eclipse SDK Classic Version: 3.4.0 Build id: I20080617-2000 Eclipse Scala Plugin 2.7.2.RC2 #1 Acquire Lift source (If you already have Lift's Git repository, skip to step 2) Execute: git clone git://github.com/dpp/liftweb.git #2 Make sure your Lift source is up-to-date Execute: cd liftweb git checkout master git pull #3 Check out Lift's Scala 2.7.2.RC2 branch git checkout --track -b scala-2.7.2.RC2 origin/scala-2.7.2.RC2 #4 Install Lift without tests mvn clean install -Dmaven.test.skip=true (Tests must be skipped because Scala Specs is not yet compatible with 2.7.2.RC2) You should know have a lift-webkit-0.10-SNAPSHOT.jar in your local Maven repository. Any Maven projects depending on Lift 0.10-SNAPSHOT in Maven will compile with the 2.7.2.RC2 version. This means you need to update the scala.version in the pom.xml file of those Maven projects to 2.7.2-rc2 If you want to go back to using the 2.7.1 version of Lift 0.10-SNAPSHOT, there are two ways you could do that: 1) Delete Lift 0.10-SNAPSHOT from your local Maven repository. The next time you need Lift 0.10-SNAPSHOT, Maven will download it from the public scala-tools.org repository. THE PUBLIC VERSION OF LIFT 0.10-SNAPSHOT WILL CONTINUE TO COMPILE WITH SCALA 2.7.1 2) Alternatively, execute: git checkout master mvn clean install OPTIONAL Instructions for using Eclipse with the 2.7.2.RC2 version of Lift #5 Download and install Eclipse Classic version = 3.4 from http://www.eclipse.org/downloads/ #6 Install Scala Eclipse Plugin version 2.7.2.RC2 with instructions from http://www.scala-lang.org/node/94 #7 Set your Eclipse M2_REPO environment variable to the directory of your local Maven repository Eclipse -- Preferences -- Java -- Build Path -- Classpath Variables -- New Name: M2_REPO Path: Location of your local Maven repository (usually ~/.m2/repository) #8 Prepare your Lift project for Eclipse In the directory for the Lift project you want to import into Eclipse (whether a project that depends on Lift 0.10-SNAPSHOT or Lift 0.10-SNAPSHOT itself), execute: mvn eclipse:eclipse #9 Import project into Eclipse File -- Import -- General -- Existing Projects Into Workspace Then select the root directory of the project you wish to import (WARNING: If you're importing the Lift project itself, be careful. Lift is made up of many sub-projects. Import them one at a time. If you try to import them all at the same time, Eclipse may crash.) /OPTIONAL Enjoy, --j --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Lift Wiki search issues
You can use Google to get better search results, just add site:liftweb.net to your query (without the quotes) to restrict the search to the wiki. For example, a query for site:liftweb.net many-to-many yields the following: http://www.google.com/search?q=site%3Aliftweb.net+many-to-many Maybe we can make this the default search in the wiki, instead of the crappy built-in one? --j On Sun, Sep 21, 2008 at 1:44 AM, Charles F. Munat [EMAIL PROTECTED] wrote: There are some things that are impossible to find on the wiki because the words are too common and are apparently on the stop-words list. Example: the following page discusses many-to-many relationships (and includes those words on the page): http://liftweb.net/index.php/HowTo_setup_composite_keys (Thanks, Martin.) But a search for many-to-many yields no results. This has happened to me many times with different search phrases. I *know* something's there, but I can't find it. Is there a way to alter the stop-words list? Maybe we can optimize it for the types of searches likely to occur on the Lift wiki. Chas. --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Source file encoding ...
But does it still test what the test is intended to test?
--j
On Sun, Sep 21, 2008 at 11:20 AM, David Pollak
[EMAIL PROTECTED] wrote:
If we do the \u encoding thing, the test will still be valid.
On Sun, Sep 21, 2008 at 11:18 AM, Marius [EMAIL PROTECTED] wrote:
I think it is reasonable to comment out this test until a better
solution can be found. ... or perhaps we can just save this file as
UTF-8 and not ASCII.. and yet this willl most likely be overwritten as
someone would change this file in an editor that automatically saves
source code as ASCII ... so kind of risky.
Br's,
Marius
On Sep 21, 8:52 pm, Jorge Ortiz [EMAIL PROTECTED] wrote:
well, heh, so the relevant test is:
encode a string replacing non-ASCII characters by their unicode
value in {
niña.encJs must_== 'ni\\u00f1a'
}
--j
On Sun, Sep 21, 2008 at 3:46 AM, Marius [EMAIL PROTECTED] wrote:
What if we use \u notation? ... it should work. (but I don;t know
the hex code of this char)
Br's,
Marius
On Sep 21, 12:21 pm, Jorge Ortiz [EMAIL PROTECTED] wrote:
2.7.2 is throwing an exception on this and failing to compile lift's
tests.
I dug around and it seems that the character that's getting barfed is
the n-with-tilde (ñ) at line 164 of StringHelpersSpec.scala
Anyone know how to address this issue?
--j
On Sat, Sep 13, 2008 at 6:39 AM, David Pollak [EMAIL PROTECTED]
wrote:
Yeah... I get that. I figured it was part of Eric's tests.
Marius wrote:
Is anyone seeing this?
IO error while decoding
/media/WORK/marius/workspace/lift/liftweb-
framework/src/test/scala/net/liftweb/util/StringHelpersSpec.scala
with
UTF-8
Please try specifying another one using the -encoding option
Br's,
Marius
--
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Collaborative Task Management http://much4.us
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[Lift] Re: JPA and enumerations
On Sat, Sep 20, 2008 at 9:14 AM, Oliver Lambert [EMAIL PROTECTED] wrote: I need this too so I might have a go at implementing it. Does lift persist enumerations (cant see a mapper it) There's a MappedEnum class in MappedInt.scala --j --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Deprecations / compilation failure on 0.10-SNAPSHOT
Kris,
There were no changes to the 'bind' function. What changed was the way
in which BindParams (which bind takes as arguments) are generated.
The deprecated code for generating BindParams (using --) is on lines
123-156 of BindHelpers.scala
The new code for generating BindParams (using -) is on lines 158-203
of BindHelpers.scala
In both cases you'll need to import Helpers._ or BindHelpers._ to get
the relevant implicits
What error messages do you see when using -?
--j
On Wed, Sep 17, 2008 at 2:53 PM, Kris Nuttycombe
[EMAIL PROTECTED] wrote:
Hi, all,
I noticed this in the BindHelpers code:
# /**
#* This class creates a BindParam from an input value
#*
#* @deprecated use - instead
#*/
# @deprecated
# class BindParamAssoc(val name: String) {
# def --(value: String): BindParam = TheBindParam(name, Text(value))
# def --(value: NodeSeq): BindParam = TheBindParam(name, value)
# def --(value: Symbol): BindParam = TheBindParam(name, Text(value.name))
# def --(value: Any): BindParam = TheBindParam(name, Text(if
(value == null) null else value.toString))
# def --(func: NodeSeq = NodeSeq): BindParam = FuncBindParam(name, func)
# def --(value: Can[NodeSeq]): BindParam = TheBindParam(name,
value.openOr(Text(Empty)))
# }
and so dutifully modified my code to use -, but I'm having trouble
finding a version of bind() that this works with. I assumed that it
would be in BindHelpers, but didn't find a bind() that was appropriate
(at least, Helpers.bind(...) didn't work when called.)
I'm using the usual signature of bind(prefix, xhtml, foo - ...,
bar - ...).
This brings up a related question; I decided to create some implicit
defs that would wrap my model objects appropriately such that I could
just call myModelObject.bind(xhtml) within whatever snippet I am
concerned with. The base class of my standard wrapper looks like this:
abstract class EntityBinder[+A](val a : A) {
def bind(xhtml : NodeSeq) : NodeSeq
}
and an implementation might look like:
import net.liftweb.util.Helpers._
import scala.xml._
class FooBinder(foo : Foo) extends EntityBinder[Foo](foo) {
def bind(xhtml : NodeSeq) : NodeSeq = {
bind(foo, xhtml, baz - NodeSeq.Empty)
}
}
My class hierarchy has three or four levels, each of which binds some
set of tags to the results of a call to super.bind(xhtml).
For some reason, the Scala compiler can't figure out that the bind() I
want to call in the implementation is Helpers.bind - it gives me this:
[WARNING]
/home/knuttycombe/work/gcsi/gcsi-admin/src/main/scala/com/gaiam/gcsi/view/EntityBinder.scala:114:
error: wrong number of arguments for method bind:
(scala.xml.NodeSeq)scala.xml.NodeSeq
[WARNING] bind(t, super.bind(xhtml),
[WARNING] ^
Any idea why it's not using the imported bind function?
If I'm barking completely up the wrong tree with my approach here,
that information would also be useful! Thanks,
Kris
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[Lift] Re: bind() and lift:embed
There's some parallels between Lift's templates and lazy evaluation. In the examples below, the code inside the snippets is lazy, it doesn't get evaluated until it is needed. Maybe what we need is a way to programmatically force evaluation of some template-code? Then if a snippet has an embed passed into it, it can choose to force that embed to evaluate before doing further processing on it. --j On Thu, Sep 11, 2008 at 2:49 PM, David Pollak [EMAIL PROTECTED] wrote: Kris, I don't think I understand your question. Lift does do things differently than Rails as it evaluates outside in rather than inside out. Thus: lift:MySnippet thisSome random text/this thatlift:comet type=CometComponent//that /lift:MySnippet If MySnippet chooses this or that... a CometComponent will only be invoked if MySnippet returns XHTML containing lift:comet type=CometComponent/ If you are trying to embed a lift:embed .../ in the body of a snippet... e.g.: lift:MySnippet lift:embed .../ /lift:MySnippet The snippet will get lift:embed .../ passed in as the NodeSeq rather than the expanded XHTML contained in the template. Thanks, David Kris Nuttycombe wrote: It appears that if I use lift:embed .../ to embed a template, bindings that I have declared that would be interpreted properly in the embedding template are not propagated to the embedee. Is this by design? How can I facilitate this sort of template reuse? I had hoped that lift:embed might be somehow analogous to Rails's render :partial where state is propagated downward into the embedded template, but this doesn't appear to be the case. Thanks, Kris --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: bind() and lift:embed
Also nice would be ways to programmatically access template features, e.g. embed(template) or snippet(Class:method), etc --j On Thu, Sep 11, 2008 at 2:55 PM, Jorge Ortiz [EMAIL PROTECTED] wrote: There's some parallels between Lift's templates and lazy evaluation. In the examples below, the code inside the snippets is lazy, it doesn't get evaluated until it is needed. Maybe what we need is a way to programmatically force evaluation of some template-code? Then if a snippet has an embed passed into it, it can choose to force that embed to evaluate before doing further processing on it. --j On Thu, Sep 11, 2008 at 2:49 PM, David Pollak [EMAIL PROTECTED] wrote: Kris, I don't think I understand your question. Lift does do things differently than Rails as it evaluates outside in rather than inside out. Thus: lift:MySnippet thisSome random text/this thatlift:comet type=CometComponent//that /lift:MySnippet If MySnippet chooses this or that... a CometComponent will only be invoked if MySnippet returns XHTML containing lift:comet type=CometComponent/ If you are trying to embed a lift:embed .../ in the body of a snippet... e.g.: lift:MySnippet lift:embed .../ /lift:MySnippet The snippet will get lift:embed .../ passed in as the NodeSeq rather than the expanded XHTML contained in the template. Thanks, David Kris Nuttycombe wrote: It appears that if I use lift:embed .../ to embed a template, bindings that I have declared that would be interpreted properly in the embedding template are not propagated to the embedee. Is this by design? How can I facilitate this sort of template reuse? I had hoped that lift:embed might be somehow analogous to Rails's render :partial where state is propagated downward into the embedded template, but this doesn't appear to be the case. Thanks, Kris --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Template questions
Group won't work, as it too needs a Seq[Node], an Iterable[Node] just won't do.
Kris, this problem is certainly annoying and stems from the type
differences between Java collections and Scala collections. You need
your items argument to either be a proper Scala collection (Seq or
any of it's subclasses (List, Array, etc)) or you can wrap your Java
collections with the wrappers in scala.collections.jcl (the
Conversions object has some convenient implicit conversions). These
wrappers all extend Scala's Seq, which is what you want.
--j
On Wed, Sep 10, 2008 at 2:51 PM, Marius [EMAIL PROTECTED] wrote:
Kris,
Having a template like (slightly changed from your example so the
values to be dynamic):
lift:Hello.orderList
order:id/
order:items
item:name/
item:cost/
/order:items
/lift:Hello.orderList
and the Scala code:
case class OrderItem(name:String, cost:String)
def orderList(xhtml: Group): NodeSeq = {
val orderList = OrderItem(first, 9.99$) :: OrderItem(second,
19.99$) :: Nil
val content = (xhtml \\ items).first.descendant
println(Content + content)
bind(order, xhtml,
id - Text(My order Id),
items - Group(orderList flatMap (elem = bind(item,
content, name - Text(elem.name), cost - Text(elem.cost
)
}
should work just fine (at least for me it does).
regarding your compile error the flatMap call returns an
Iterable[scala.xml.Node] which does not conform with NodeSeq return
Type. To fix this you can probably wrap everything into a Group like:
private def bindItems(xhtml : NodeSeq,
items :java.util.Collection[Item]) : NodeSeq = {
Group(items.flatMap(item =
bind(item, xhtml,
name -- Text(item.getName
}
... just out of curiosity is there a reason why you;re using
java,util.collection and not Scala List, Seq etc?
Br's,
Marius
On Sep 11, 12:16 am, Kris Nuttycombe [EMAIL PROTECTED]
wrote:
Man, I really wish I understood the Scala type system better.
def list(xhtml : NodeSeq) : NodeSeq = {
val orders = EM.createQuery[Order](FROM Order).getResultList
orders.flatMap(order =
bind(order, xhtml,
id -- Text(order.getId.toString),
uuid -- Text(order.getUuid.toString),
items -- bindItems((xhtml \\ items).first.child,
order.getItems))
)
}
private def bindItems(xhtml : NodeSeq, items :
java.util.Collection[Item]) : NodeSeq = {
items.flatMap(item =
bind(item, xhtml,
name -- Text(item.getName)))
}
[WARNING]
/home/knuttycombe/work/gcsi/gcsi-admin/src/main/scala/com/gaiam/gcsi/snippet/Orders.scala:33:
error: type mismatch;
[WARNING] found : Iterable[scala.xml.Node]
[WARNING] required: scala.xml.NodeSeq
[WARNING] items.flatMap(item =
[WARNING] ^
[WARNING] one error found
That's the only error, too; the list function compiles just fine.
I've tried making that items.flatMap[NodeSeq], adding an explicit cast
.asInstanceOf[NodeSeq] to the results of the binding, and split
bindItems out into a separate function just to try to make things look
as much the same as possible. WTF?
Kris
On Wed, Sep 10, 2008 at 2:28 PM, Derek Chen-Becker
[EMAIL PROTECTED] wrote:
Sorry, forgot about that. You might be able to use Scala's XML processing
to
just get at the children:
bind (item, (xhtml \\ items).first.child, ...)
Kind of ugly. I still can't find the example that David posted but it
seemed
a lot cleaner.
Derek
On Wed, Sep 10, 2008 at 12:39 PM, Kris Nuttycombe
[EMAIL PROTECTED] wrote:
Hrm. I think that I need to do something extra there to extract and
bind against just the order:items element to avoid re-binding over
the entire contents of the snippet.
Marius, can you expand at all on using snippet attributes for case
(1)? I've googled around and looked at all of the template docs I can
find and am not really following how to take that approach.
Thanks,
Kris
On Wed, Sep 10, 2008 at 12:08 PM, Derek Chen-Becker
[EMAIL PROTECTED] wrote:
I think the bind would look something like this (assuming that xhtml is
the
input NodeSeq):
bind(order, xhtml, id -- Text(your_id_here),
items -- your_items.flatMap{ item =
bind(item,
xhtml, name -- Text(item.name), cost -- Text(item.cost)) })
I seem to remember David giving an example of a nested bind but I can't
find
it.
Derek
On Wed, Sep 10, 2008 at 11:37 AM, Marius [EMAIL PROTECTED]
wrote:
Hi,
1. You can use snippet attributes.
2. You can leave the divs in the template page and attach only
certain attributes from the snippet. Note that Scala XML API is
immutable but that was never an inconvenience for me :) ... you could
pattern match them easily.
Br's,
Marius
On Sep 10, 8:05 pm, Kris Nuttycombe [EMAIL PROTECTED]
[Lift] Re: Missing Scala class?
What version of Lift and what version of Scala are you using? (The version of Scala that you use must match the version of Scala that was used to compile your version of Lift.) --j On Mon, Sep 8, 2008 at 10:37 AM, Kris Nuttycombe [EMAIL PROTECTED] wrote: Hi, all, I'm not sure whether this is a Lift issue or a Scala issue, but in running the Glassfish verifier over my Lift war I saw a couple of suspect failures: Failed to find following classes: [ scala.Stream$cons ] referenced in the following call stack : at scala.Stream$cons$ at scala.Stream$$anonfun$apply$1 at scala.Stream$ at scala.Stream$class at scala.RandomAccessSeq$$anon$6 at scala.RandomAccessSeq$class at scala.RandomAccessSeq$Projection$$anon$7 at scala.RandomAccessSeq$Projection$class at scala.Array$Projection$$anon$2 at scala.Array$Projection$class at scala.Array$ at scala.runtime.BoxedObjectArray at scala.runtime.StringAdd at scala.Predef at scala.Predef$$anon$2 at scala.Predef$ at scala.Iterator$$anon$3 at scala.Iterator$ at scala.Iterator$$anon$15 at scala.Iterator$class at scala.BufferedIterator$Advanced$$anon$3 at scala.BufferedIterator$Advanced$class at scala.BufferedIterator$Default at scala.Iterator$PredicatedIterator at scala.Iterator$TakeWhileIterator at scala.Iterator at scala.collection.mutable.Buffer at scala.Iterable at scala.Collection at scala.RandomAccessSeq$Projection$MapProjection at scala.RandomAccessSeq$Projection at scala.RandomAccessSeq at scala.collection.mutable.ResizableArray at scala.collection.mutable.ArrayBuffer at scala.collection.mutable.Script at scala.collection.mutable.Buffer$class at scala.collection.mutable.ListBuffer at scala.List$$anonfun$flatten$1 at scala.List at scala.Stream at scala.runtime.BoxedArray at scala.StringBuilder at scala.Tuple2 at scala.Iterable$class at scala.Seq$Projection$ComputeSize at scala.Seq$Projection at scala.Seq$Projection$class at scala.Seq$ at scala.Either$RightProjection at scala.Either at scala.Left at scala.Option at scala.Seq at scala.runtime.BoxedDoubleArray at scala.runtime.ScalaRunTime$ at net.liftweb.http.ParsePath at net.liftweb.http.LiftFilter Any ideas? Thanks, Kris --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
