[Lift] Trouble with MappedTextarea maximum length validation
Hi,
I've created a MappedTextarea field with a maximum length as follows:
class Item extends LongKeyedMapper[WorkUnit] with IdPK {
object description extends MappedTextarea(this,300)
}
MappedTextarea extends MappedString. MappedString puts a maxlength=N
onto the corresponding form text field. MappedTextarea does (for good
reasons), but appears to make no other provision to enforce the max
length.
Furthermore, submitting a form with a value greater in length than the
specified maxLen results in an error (shown at the end of the post).
The problem can also be observed in the lift example on
http://demo.liftweb.net/simple/add if using more than 2048 characters
in the personal essay field.
I'm new to lift, and the only way I could reason to fix the problem is
to override the valMaxLen method:
class Item extends LongKeyedMapper[WorkUnit] with IdPK {
object description extends MappedTextarea(this,300) {
valMaxLen(300, Description must be 300 characters)
_ :: super.validations
}
}
Is this fix actually the proper way to do it? It seems a bit against
DRY to need to explicitly override the valMaxLen method in addition to
specifying the maxLen when defining the field, and ungraceful to cause
an error if the developer does not do this. Is there a better way to
fix the problem? Is this something that should be fixed in the core?
Any advice is appreciated!
Best Regards,
Drew Wilder-Goodwin
Error message when putting more than maxLen characters in a
MappedTextarea field:
Exception occured while processing /
Message: java.sql.SQLException: A truncation error was encountered
trying to shrink VARCHAR 'asdf asdfasdf asdfasdf asdfasdf asdfasdf
asdfasdf asdfasdf a' to length 300.
org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException
(Unknown Source)
org.apache.derby.impl.jdbc.Util.generateCsSQLException(Unknown
Source)
org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException
(Unknown Source)
org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException
(Unknown Source)
org.apache.derby.impl.jdbc.EmbedConnection.handleException(Unknown
Source)
org.apache.derby.impl.jdbc.ConnectionChild.handleException(Unknown
Source)
org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(Unknown
Source)
org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeStatement
(Unknown Source)
org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeUpdate
(Unknown Source)
net.liftweb.mapper.MetaMapper$$anonfun$12.prepStat$1(MetaMapper.scala:
642)
net.liftweb.mapper.MetaMapper$$anonfun$12$$anonfun$19.apply
(MetaMapper.scala:659)
net.liftweb.mapper.MetaMapper$$anonfun$12$$anonfun$19.apply
(MetaMapper.scala:659)
net.liftweb.mapper.DB$$anonfun$prepareStatement$2.apply(DB.scala:292)
net.liftweb.mapper.DB$$anonfun$prepareStatement$2.apply(DB.scala:288)
net.liftweb.util.TimeHelpers$class.calcTime(TimeHelpers.scala:241)
net.liftweb.util.Helpers$.calcTime(Helpers.scala:29)
net.liftweb.mapper.DB$.prepareStatement(DB.scala:288)
net.liftweb.mapper.MetaMapper$$anonfun$12.apply(MetaMapper.scala:658)
net.liftweb.mapper.MetaMapper$$anonfun$12.apply(MetaMapper.scala:578)
net.liftweb.mapper.DB$.use(DB.scala:305)
net.liftweb.mapper.MetaMapper$class.save(MetaMapper.scala:577)
com.agileite.app.model.Item$.save(Item.scala:22)
net.liftweb.mapper.Mapper$$anonfun$save$1.apply(Mapper.scala:84)
net.liftweb.mapper.Mapper$$anonfun$save$1.apply(Mapper.scala:84)
net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:65)
net.liftweb.mapper.Safe$.runSafe(Safe.scala:44)
net.liftweb.mapper.Mapper$class.runSafe(Mapper.scala:50)
com.agileite.app.model.Item.runSafe(Item.scala:9)
net.liftweb.mapper.Mapper$class.save(Mapper.scala:83)
com.agileite.app.model.Item.save(Item.scala:9)
com.agileite.app.snippet.Item.checkAndSave$1(Item.scala:24)
com.agileite.app.snippet.Item$$anonfun$doBind$1$1.apply(Item.scala:
31)
com.agileite.app.snippet.Item$$anonfun$doBind$1$1.apply(Item.scala:
31)
net.liftweb.http.S$NFuncHolder$$anonfun$apply$46.apply(S.scala:941)
net.liftweb.http.S$NFuncHolder$$anonfun$apply$46.apply(S.scala:941)
scala.List.map(List.scala:805)
net.liftweb.http.S$NFuncHolder.apply(S.scala:941)
net.liftweb.http.LiftSession$$anonfun$buildFunc$1$2.apply
(LiftSession.scala:307)
net.liftweb.http.LiftSession$$anonfun$5$$anonfun$apply$19.apply
(LiftSession.scala:322)
net.liftweb.http.LiftSession$$anonfun$5$$anonfun$apply$19.apply
(LiftSession.scala:322)
scala.List.map(List.scala:805)
net.liftweb.http.LiftSession$$anonfun$5.apply(LiftSession.scala:322)
net.liftweb.http.LiftSession$$anonfun$5.apply(LiftSession.scala:311)
scala.List.flatMap(List.scala:1125)
[Lift] Re: Notes from 8/19/09 Lift Committers Call - LIFT SESSION REPLICATION DISCUSSION
Changed the thread subject ... Marius On Aug 22, 6:17 pm, marius d. marius.dan...@gmail.com wrote: Great thing Dave. Roughly having a bound function f that user provided say in an ajaxButton call.The function f may hold references to other functions, session/request-vars, references to the snippets instances etc. One condition is that every object in the graph should be serializable and that is beyond our control (but more on the programmer's control). Of course for the function f to be correctly applied on any node, the whole object graph should be replicated among cluster nodes). Now assuming that we can serialize any function/object on the wire there is still one thing to solve. As you know LiftSession and HTTPSession are not the same things. a LiftSession is linked to a HTTPSession so we'd probably need to replicate both? Systems like stax have their own way to make a HTTPSession available to any cluster node AFAIK by saving it into a database. Into such environments I'm not such if we know the actual machines identity andif we would have built our own replication system in a clustered env. that would probably not work ... so a node to node replication system may not be possible in stax like environments but would certainly work on other models. Still persisting a LiftSession in DB shoud and sounds like it is more environment agnostic. In a glance node-to-node session replication sounds to be a little more efficient that DB session store we should probably keep an eye on both models. Other model that could be to lazily replicate sessions across cluster nodes such as: 1. Upon a request Node A advertises to other nodes that it hods the last state for session X 2. Upon a subsequent call that hits node B it won;t have the session but it would know where the session exist a fetch the state from that node 3. Node Node B advertises that it has the last state for session X ... Such model is not very fail over proof as at a given point in time different versions of the session state which may or may not enough. The most consistent model seems to be to store the session context into a centralized session store ... but that would induce a single point of failure unless the session store itself is redundant. Last but not the least Java serialization is sub-optimal but I'm not sure how many alternatives we'd have in order to make sure that we have a consistent reference graph that can be represented on the wire.. Br's, Marius On Aug 22, 5:25 pm, David Pollak feeder.of.the.be...@gmail.com wrote: On Sat, Aug 22, 2009 at 2:31 AM, marius d. marius.dan...@gmail.com wrote: Greg/Viktor, We could meet and discuss using whatever means (skype, chat, mail etc.) and brainstorm what can we do about this. Even though I like a lot sticky sessions idiom it is not enough and I think we do have a consensus here :) ... of course any committer is more then welcome to participate. On the substance point (I've moved this to the Lift list), we may want to use some aspecty thing to analyze the potential serializability of functions that are added to the LiftSession. I'm betting there's no actual barrier to serializing stuff in the normal case except when things refer to the HttpServletRequest (which refers to input/output streams). If we could get an actual analysis, we could develop a better serialization/session moving strategy. Br's, Marius On Aug 22, 12:15 am, Viktor Klang wrote: On Fri, Aug 21, 2009 at 11:12 PM, Meredith Gregory wrote: Marius, i really do want to go over lift's ability to work in vendor supplied clustering solutions. We could do a Skype conf when you're feeling better, Greg. -- 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 --~--~-~--~~~---~--~~ 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: Problem building my app in Windows
Have you tried using the windows installer? Cheers, Tim On Aug 23, 6:08 am, DFectuoso santiago1...@gmail.com wrote: Hi, i have been working in linux and mac and having a wonderful time with mvn and everything lift's got to offer =). Sadly i want to teach lift to a person who uses Windows as he's only OS, so i am trying to configure hes computer, neither him or me are experts on this OS. I installed java 1.6 and ran into some problems, so i downloaded 1.5_20 and now i have java and maven working, but while trying to compile a very simple file i get the an error(posted at the end of this post); and i'm wondering if theres anything i need to know, seems like it could be some permisions or something like that. Any ideas? People running on windows how did you configure you box? Thanks, The error: [INFO] Trace org.apache.maven.lifecycle.LifecycleExecutionException: Unable to get dependency information: Unable to read the metadata file for artifact 'net.liftweb:lift-co re:jar': Error getting POM for 'net.liftweb:lift-core' from the repository: Unab le to store local copy of metadata: Error updating group repository metadata net.liftweb:lift-core:pom:1.1-SNAPSHOT for project net.liftweb:lift-core net.liftweb:lift-core:jar:1.1-SNAPSHOT from the specified remote repositories: central (http://repo1.maven.org/maven2), scala-tools.org (http://scala-tools.org/repo-releases), scala-tools.org.snapshots (http://scala-tools.org/repo-snapshots), http://www.lag.net/repo/(http://www.lag.net/repo/) Path to dependency: 1) net.twitknow:4Disc:war:0.1 at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(Defa ultLifecycleExecutor.java:575) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLi fecycle(DefaultLifecycleExecutor.java:499) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(Defau ltLifecycleExecutor.java:478) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHan dleFailures(DefaultLifecycleExecutor.java:330) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegmen ts(DefaultLifecycleExecutor.java:291) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute (DefaultLi fecycleExecutor.java:142) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java: 336) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java: 129) at org.apache.maven.cli.MavenCli.main(MavenCli.java:287) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl. java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAcces sorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:592) at org.codehaus.classworlds.Launcher.launchEnhanced (Launcher.java:315) at org.codehaus.classworlds.Launcher.launch(Launcher.java:255) at org.codehaus.classworlds.Launcher.mainWithExitCode (Launcher.java:430) at org.codehaus.classworlds.Launcher.main(Launcher.java:375) Caused by: org.apache.maven.artifact.resolver.ArtifactResolutionException: Unabl e to get dependency information: Unable to read the metadata file for artifact ' net.liftweb:lift-core:jar': Error getting POM for 'net.liftweb:lift- core' from t he repository: Unable to store local copy of metadata: Error updating group repo sitory metadata net.liftweb:lift-core:pom:1.1-SNAPSHOT for project net.liftweb:lift-core net.liftweb:lift-core:jar:1.1-SNAPSHOT from the specified remote repositories: central (http://repo1.maven.org/maven2), scala-tools.org (http://scala-tools.org/repo-releases), scala-tools.org.snapshots (http://scala-tools.org/repo-snapshots), http://www.lag.net/repo/(http://www.lag.net/repo/) Path to dependency: 1) net.twitknow:4Disc:war:0.1 at org.apache.maven.artifact.resolver.DefaultArtifactCollector.recurse(D efaultArtifactCollector.java:403) at org.apache.maven.artifact.resolver.DefaultArtifactCollector.collect(D efaultArtifactCollector.java:76) at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTra nsitively(DefaultArtifactResolver.java:300) at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTra nsitively(DefaultArtifactResolver.java:288) at org.apache.maven.plugin.DefaultPluginManager.resolveTransitiveDepende ncies(DefaultPluginManager.java:1415) at org.apache.maven.plugin.DefaultPluginManager.executeMojo (DefaultPlugi nManager.java:405) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(Defa ultLifecycleExecutor.java:558) ... 16 more Caused by: org.apache.maven.artifact.metadata.ArtifactMetadataRetrievalException : Unable to read the metadata file for artifact 'net.liftweb:lift-
[Lift] Re: alternate webroot using Boot?
Personally id do something a little more complex than have a sink url like /content/ :-) Cant you just write a regex to match various types of static content so its transparently served by NGINX irrespective of resource path? Of course, there are a few exceptions like liftAjax.js, but for the most part it seems like it would be fairly trivial to configure Cheers, Tim On Aug 23, 5:29 am, Grant Wood smackt...@gmail.com wrote: Thanks David, I think your best bet is to serve your static content via a front-end web server (I use Nginx) and route all the app-related requests to your container. I was trying to avoid that for this project. Back to using /content/ for everything static. Nginx is a great suggestion for this, thanks! -Grant On Aug 22, 8:48 pm, David Pollak feeder.of.the.be...@gmail.com wrote: On Sat, Aug 22, 2009 at 4:51 PM, Grant Wood smackt...@gmail.com wrote: How can I tell a Lift app to use an alternate webroot (holding all my html, static templates, images, etc)? Essentially, I want my application to look in a folder of my choosing for content, rather than in the webapp directory as it does by default. I can't be the only person who has to manage/deploy content in a separate process and system than the application, I think you're the first person that has asked for this. so there is likely a simple LiftRule I can override in Boot.scala to use content in a location other than the war. I think this might be impossible (or at least very, very difficult.) Mapping from resources contained in the WAR file into the application space is not defined by any spec that I know of and varies on a container by container basis. I think your best bet is to serve your static content via a front-end web server (I use Nginx) and route all the app-related requests to your container. However, digging through the documentation, discussions, and code (LiftServlet, LiftRules, etc.) I don't see an obvious entry point. Thank you for your help! -- 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 --~--~-~--~~~---~--~~ 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: Structuring Web Application
Can you please be more specific about your app tier that you wish to access - im unfortunately not seeing what hurdle stops you from accessing it just as you would from Java? Cheers, Tim On Aug 22, 9:45 pm, greekscala hellectro...@gmail.com wrote: Hello Lift Community, I want to implement a new Project in Scala with Lift. I am new to Scala/Lift. Scala looks great and it expanded my horizon. FP is a new concept to me. My background is Java and a little bit of Spring. I read three Scala books and a lot on blogs. But there is a missing part for me on how to combine my classes. I read the Scalable Components Paper and I dont get it 100%. I need a little bit more input on structuring a web app and I hope to get the 100% with you guys. With Spring you let the container manage the classes. ok. I think my problem is, I dont know how you structured a web app in days without Spring. I would like to have Lift access my domain logic over an application layer (Domain Driven Design). In Wicket I would have my SpringBean annotation. So I hope to understand, how - can I access my app layer? - how could I organize my domain logic. I want to use DDD. I know I have to use object and class in a bigger sense...? I hope you guys can give me some hints. Thanks a lot --~--~-~--~~~---~--~~ 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: Include build # in LiftVersion?
Indrajit, We actually discussed this a while back for the installers, and the long term plan is still that we do something like this to speed the getting started process if you know of any generation plugins that could potentially serve as a starting point that would be great! This stuff is certainly on the radar, but as always its a case of time and resources :-) Cheers, Tim On Aug 22, 2:48 pm, Indrajit Raychaudhuri indraj...@gmail.com wrote: Indeed, looking out in the maven land for a way out would be useful. Meanwhile, there is an issue request for buildnumber plugin to support GIT:http://jira.codehaus.org/browse/MOJO-1199. However, Maven plugin for lift activities (creating boilerplate codes - like model, snippet etc.) could be interesting. /Indrajit On Aug 21, 11:51 pm, Timothy Perrett timo...@getintheloop.eu wrote: Perhaps its worth going to market (as it were) to check that there is either no single solution, nor a number of other solutions (mojos) that we could string together to get what we want? Im not sure that the effort involved in making our own is warranted given the output... Perhaps someone in the wider java/maven land has some existing effort in a repo someplace... Cheers, Tim On 21/08/2009 17:53, David Pollak feeder.of.the.be...@gmail.com wrote: Gaacckkk... that's the first thought that comes to mind... ;-) Looks like our choices are: - Write our own Maven plugin and/or update the BuildNumber plugin - Avoid the feature We actually have the build time already in the manifest. I'd love to get the repo and the fingerprint in there as well. --~--~-~--~~~---~--~~ 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: Notes from 8/19/09 Lift Committers Call - LIFT SESSION REPLICATION DISCUSSION
I'm wondering if we can't leverage JavaSpaces to handle a lot of this stuff. From my experience with the technology it seems to be a pretty good fit for the problem. On Sun, Aug 23, 2009 at 11:06 AM, marius d. marius.dan...@gmail.com wrote: Changed the thread subject ... Marius On Aug 22, 6:17 pm, marius d. marius.dan...@gmail.com wrote: Great thing Dave. Roughly having a bound function f that user provided say in an ajaxButton call.The function f may hold references to other functions, session/request-vars, references to the snippets instances etc. One condition is that every object in the graph should be serializable and that is beyond our control (but more on the programmer's control). Of course for the function f to be correctly applied on any node, the whole object graph should be replicated among cluster nodes). Now assuming that we can serialize any function/object on the wire there is still one thing to solve. As you know LiftSession and HTTPSession are not the same things. a LiftSession is linked to a HTTPSession so we'd probably need to replicate both? Systems like stax have their own way to make a HTTPSession available to any cluster node AFAIK by saving it into a database. Into such environments I'm not such if we know the actual machines identity andif we would have built our own replication system in a clustered env. that would probably not work ... so a node to node replication system may not be possible in stax like environments but would certainly work on other models. Still persisting a LiftSession in DB shoud and sounds like it is more environment agnostic. In a glance node-to-node session replication sounds to be a little more efficient that DB session store we should probably keep an eye on both models. Other model that could be to lazily replicate sessions across cluster nodes such as: 1. Upon a request Node A advertises to other nodes that it hods the last state for session X 2. Upon a subsequent call that hits node B it won;t have the session but it would know where the session exist a fetch the state from that node 3. Node Node B advertises that it has the last state for session X ... Such model is not very fail over proof as at a given point in time different versions of the session state which may or may not enough. The most consistent model seems to be to store the session context into a centralized session store ... but that would induce a single point of failure unless the session store itself is redundant. Last but not the least Java serialization is sub-optimal but I'm not sure how many alternatives we'd have in order to make sure that we have a consistent reference graph that can be represented on the wire.. Br's, Marius On Aug 22, 5:25 pm, David Pollak feeder.of.the.be...@gmail.com wrote: On Sat, Aug 22, 2009 at 2:31 AM, marius d. marius.dan...@gmail.com wrote: Greg/Viktor, We could meet and discuss using whatever means (skype, chat, mail etc.) and brainstorm what can we do about this. Even though I like a lot sticky sessions idiom it is not enough and I think we do have a consensus here :) ... of course any committer is more then welcome to participate. On the substance point (I've moved this to the Lift list), we may want to use some aspecty thing to analyze the potential serializability of functions that are added to the LiftSession. I'm betting there's no actual barrier to serializing stuff in the normal case except when things refer to the HttpServletRequest (which refers to input/output streams). If we could get an actual analysis, we could develop a better serialization/session moving strategy. Br's, Marius On Aug 22, 12:15 am, Viktor Klang wrote: On Fri, Aug 21, 2009 at 11:12 PM, Meredith Gregory wrote: Marius, i really do want to go over lift's ability to work in vendor supplied clustering solutions. We could do a Skype conf when you're feeling better, Greg. -- 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 --~--~-~--~~~---~--~~ 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: Notes from 8/19/09 Lift Committers Call - LIFT SESSION REPLICATION DISCUSSION
I've been playing with JINI a few years ago a liked it a lot (not a simple programming model, but JavaSpace reduces a lot of such complexity) but I'm not sure how fitful it really is in stax like environments where broadcast UDP may not be supported so discovery service would be more difficult. Br's, Marius On Aug 23, 2:50 pm, Kevin Wright kev.lee.wri...@googlemail.com wrote: I'm wondering if we can't leverage JavaSpaces to handle a lot of this stuff. From my experience with the technology it seems to be a pretty good fit for the problem. On Sun, Aug 23, 2009 at 11:06 AM, marius d. marius.dan...@gmail.com wrote: Changed the thread subject ... Marius On Aug 22, 6:17 pm, marius d. marius.dan...@gmail.com wrote: Great thing Dave. Roughly having a bound function f that user provided say in an ajaxButton call.The function f may hold references to other functions, session/request-vars, references to the snippets instances etc. One condition is that every object in the graph should be serializable and that is beyond our control (but more on the programmer's control). Of course for the function f to be correctly applied on any node, the whole object graph should be replicated among cluster nodes). Now assuming that we can serialize any function/object on the wire there is still one thing to solve. As you know LiftSession and HTTPSession are not the same things. a LiftSession is linked to a HTTPSession so we'd probably need to replicate both? Systems like stax have their own way to make a HTTPSession available to any cluster node AFAIK by saving it into a database. Into such environments I'm not such if we know the actual machines identity andif we would have built our own replication system in a clustered env. that would probably not work ... so a node to node replication system may not be possible in stax like environments but would certainly work on other models. Still persisting a LiftSession in DB shoud and sounds like it is more environment agnostic. In a glance node-to-node session replication sounds to be a little more efficient that DB session store we should probably keep an eye on both models. Other model that could be to lazily replicate sessions across cluster nodes such as: 1. Upon a request Node A advertises to other nodes that it hods the last state for session X 2. Upon a subsequent call that hits node B it won;t have the session but it would know where the session exist a fetch the state from that node 3. Node Node B advertises that it has the last state for session X ... Such model is not very fail over proof as at a given point in time different versions of the session state which may or may not enough. The most consistent model seems to be to store the session context into a centralized session store ... but that would induce a single point of failure unless the session store itself is redundant. Last but not the least Java serialization is sub-optimal but I'm not sure how many alternatives we'd have in order to make sure that we have a consistent reference graph that can be represented on the wire.. Br's, Marius On Aug 22, 5:25 pm, David Pollak feeder.of.the.be...@gmail.com wrote: On Sat, Aug 22, 2009 at 2:31 AM, marius d. marius.dan...@gmail.com wrote: Greg/Viktor, We could meet and discuss using whatever means (skype, chat, mail etc.) and brainstorm what can we do about this. Even though I like a lot sticky sessions idiom it is not enough and I think we do have a consensus here :) ... of course any committer is more then welcome to participate. On the substance point (I've moved this to the Lift list), we may want to use some aspecty thing to analyze the potential serializability of functions that are added to the LiftSession. I'm betting there's no actual barrier to serializing stuff in the normal case except when things refer to the HttpServletRequest (which refers to input/output streams). If we could get an actual analysis, we could develop a better serialization/session moving strategy. Br's, Marius On Aug 22, 12:15 am, Viktor Klang wrote: On Fri, Aug 21, 2009 at 11:12 PM, Meredith Gregory wrote: Marius, i really do want to go over lift's ability to work in vendor supplied clustering solutions. We could do a Skype conf when you're feeling better, Greg. -- 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 --~--~-~--~~~---~--~~ 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
[Lift] Re: Structuring Web Application
Hello Timothy, thank you. I know that I do not need Spring for Scala. I dont expressed it well. How do I glue my app parts together. And how do I glue the lift part with a facade or application service of my domain layer. Thanks for your help On 23 Aug., 13:12, Timothy Perrett timo...@getintheloop.eu wrote: Can you please be more specific about your app tier that you wish to access - im unfortunately not seeing what hurdle stops you from accessing it just as you would from Java? Cheers, Tim On Aug 22, 9:45 pm, greekscala hellectro...@gmail.com wrote: Hello Lift Community, I want to implement a new Project in Scala with Lift. I am new to Scala/Lift. Scala looks great and it expanded my horizon. FP is a new concept to me. My background is Java and a little bit of Spring. I read three Scala books and a lot on blogs. But there is a missing part for me on how to combine my classes. I read the Scalable Components Paper and I dont get it 100%. I need a little bit more input on structuring a web app and I hope to get the 100% with you guys. With Spring you let the container manage the classes. ok. I think my problem is, I dont know how you structured a web app in days without Spring. I would like to have Lift access my domain logic over an application layer (Domain Driven Design). In Wicket I would have my SpringBean annotation. So I hope to understand, how - can I access my app layer? - how could I organize my domain logic. I want to use DDD. I know I have to use object and class in a bigger sense...? I hope you guys can give me some hints. Thanks a lot --~--~-~--~~~---~--~~ 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: Notes from 8/19/09 Lift Committers Call - LIFT SESSION REPLICATION DISCUSSION
I guess JGroups is another alternative here, it's a bit lower level, but does let you set up nodes manually - so it's not an issue that you need UDP broadcast (although it helps...) On Sun, Aug 23, 2009 at 1:09 PM, marius d. marius.dan...@gmail.com wrote: I've been playing with JINI a few years ago a liked it a lot (not a simple programming model, but JavaSpace reduces a lot of such complexity) but I'm not sure how fitful it really is in stax like environments where broadcast UDP may not be supported so discovery service would be more difficult. Br's, Marius On Aug 23, 2:50 pm, Kevin Wright kev.lee.wri...@googlemail.com wrote: I'm wondering if we can't leverage JavaSpaces to handle a lot of this stuff. From my experience with the technology it seems to be a pretty good fit for the problem. On Sun, Aug 23, 2009 at 11:06 AM, marius d. marius.dan...@gmail.com wrote: Changed the thread subject ... Marius On Aug 22, 6:17 pm, marius d. marius.dan...@gmail.com wrote: Great thing Dave. Roughly having a bound function f that user provided say in an ajaxButton call.The function f may hold references to other functions, session/request-vars, references to the snippets instances etc. One condition is that every object in the graph should be serializable and that is beyond our control (but more on the programmer's control). Of course for the function f to be correctly applied on any node, the whole object graph should be replicated among cluster nodes). Now assuming that we can serialize any function/object on the wire there is still one thing to solve. As you know LiftSession and HTTPSession are not the same things. a LiftSession is linked to a HTTPSession so we'd probably need to replicate both? Systems like stax have their own way to make a HTTPSession available to any cluster node AFAIK by saving it into a database. Into such environments I'm not such if we know the actual machines identity andif we would have built our own replication system in a clustered env. that would probably not work ... so a node to node replication system may not be possible in stax like environments but would certainly work on other models. Still persisting a LiftSession in DB shoud and sounds like it is more environment agnostic. In a glance node-to-node session replication sounds to be a little more efficient that DB session store we should probably keep an eye on both models. Other model that could be to lazily replicate sessions across cluster nodes such as: 1. Upon a request Node A advertises to other nodes that it hods the last state for session X 2. Upon a subsequent call that hits node B it won;t have the session but it would know where the session exist a fetch the state from that node 3. Node Node B advertises that it has the last state for session X ... Such model is not very fail over proof as at a given point in time different versions of the session state which may or may not enough. The most consistent model seems to be to store the session context into a centralized session store ... but that would induce a single point of failure unless the session store itself is redundant. Last but not the least Java serialization is sub-optimal but I'm not sure how many alternatives we'd have in order to make sure that we have a consistent reference graph that can be represented on the wire.. Br's, Marius On Aug 22, 5:25 pm, David Pollak feeder.of.the.be...@gmail.com wrote: On Sat, Aug 22, 2009 at 2:31 AM, marius d. marius.dan...@gmail.com wrote: Greg/Viktor, We could meet and discuss using whatever means (skype, chat, mail etc.) and brainstorm what can we do about this. Even though I like a lot sticky sessions idiom it is not enough and I think we do have a consensus here :) ... of course any committer is more then welcome to participate. On the substance point (I've moved this to the Lift list), we may want to use some aspecty thing to analyze the potential serializability of functions that are added to the LiftSession. I'm betting there's no actual barrier to serializing stuff in the normal case except when things refer to the HttpServletRequest (which refers to input/output streams). If we could get an actual analysis, we could develop a better serialization/session moving strategy. Br's, Marius On Aug 22, 12:15 am, Viktor Klang wrote: On Fri, Aug 21, 2009 at 11:12 PM, Meredith Gregory wrote: Marius, i really do want to go over lift's ability to work in vendor supplied clustering solutions. We could do a Skype conf when you're feeling better, Greg. -- Lift, the simply functional web
[Lift] Re: lift:with-params deprecation alternatives
I tried to find some info about the correct usage of template related
tags on wiki but I couldn't find the most recent information about it.
I'm starting with Lift and I couldn't find all information that I want
on wiki pages, is there any chance to update the wiki with some info
about these renamed tags?
On 20 ago, 14:18, inca incarn...@whiteants.net wrote:
The neat thing about the insert is that it is consistent with other
templating frameworks (Tiles [http://struts.apache.org/1.x/struts-
tiles/tlddoc/tiles/insert.html], Facelets [http://www.roseindia.net/
jsf/insert.shtml], etc.), so it would be easy for folks like me to
migrate to Lift. I don't think that lift:bind-at is a good
replacement: it looks very similar to lift:bind when browsing the
code (I've just tested this, not very eye-catching difference).
And if you really like minimal typing, call it lift:put at= (it is
one letter smaller than lift:at name=) :) And yes, it's naming
policy is still consistent with other tags (verbs as tag names and
pronouns as attributes).
About the built-in snippet aliases... I don't see anything wrong
there. Just let them have custom xml prefixes, and it would be
perfectly clear that it is an alias. I, personally, think that xml
prefixes are great. Say I have a snippet like this:
class HtmlUI {
def wrapper(in:NodeSeq):NodeSeq =
div class=w
div class=e
div class=c{in}
/div
/div
/div
def button(in:NodeSeq):NodeSeq =
a class=button
style={background:transparent url('/img/buttons/bkg- + S.attr
(bkg).openOr(green) + .png') no-repeat}
title={S.attr(title).openOr()}
href={S.attr(href).openOr(#)}
img src={/img/buttons/ + S.attr(icon).openOr() + .png}
alt=/
div class=gloss/
/a
...etc...
}
So every time I need a wrapper or a glossy button I would write
lift:HtmlUI.wrapper ... or lift:HtmlUI.button
Now if I had a chance to create xhtml prefix alias for this snippet
(something like that:
LiftRules.addSnippetMapping(ui - HtmlUI)
), than my xhtml templates would reduce a lot (ui:wrapper ... and
ui:button ...) along with increased readability.
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[Lift] Lift vs Rails
I am doing a startup company that involves both a lot of processing on the backend (in the code) and a decent amount of comet/ajax in the frontend.It is very important that the code quickly on the server. I have seen the light with respect to Scala and Lift looks terrific. My only concern is how new it is and the availability of resources (programmers, books etc). I really do want to use Lift instead of Rails. Could somebody please convince me? :) --~--~-~--~~~---~--~~ 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:with-params deprecation alternatives
Currently both with-param and bind-at are supported. I'll try to
update the wiki.
Br's,
Marius
On Aug 23, 5:28 pm, _rogerio_ rogerio.ara...@gmail.com wrote:
I tried to find some info about the correct usage of template related
tags on wiki but I couldn't find the most recent information about it.
I'm starting with Lift and I couldn't find all information that I want
on wiki pages, is there any chance to update the wiki with some info
about these renamed tags?
On 20 ago, 14:18, inca incarn...@whiteants.net wrote:
The neat thing about the insert is that it is consistent with other
templating frameworks (Tiles [http://struts.apache.org/1.x/struts-
tiles/tlddoc/tiles/insert.html], Facelets [http://www.roseindia.net/
jsf/insert.shtml], etc.), so it would be easy for folks like me to
migrate to Lift. I don't think that lift:bind-at is a good
replacement: it looks very similar to lift:bind when browsing the
code (I've just tested this, not very eye-catching difference).
And if you really like minimal typing, call it lift:put at= (it is
one letter smaller than lift:at name=) :) And yes, it's naming
policy is still consistent with other tags (verbs as tag names and
pronouns as attributes).
About the built-in snippet aliases... I don't see anything wrong
there. Just let them have custom xml prefixes, and it would be
perfectly clear that it is an alias. I, personally, think that xml
prefixes are great. Say I have a snippet like this:
class HtmlUI {
def wrapper(in:NodeSeq):NodeSeq =
div class=w
div class=e
div class=c{in}
/div
/div
/div
def button(in:NodeSeq):NodeSeq =
a class=button
style={background:transparent url('/img/buttons/bkg- + S.attr
(bkg).openOr(green) + .png') no-repeat}
title={S.attr(title).openOr()}
href={S.attr(href).openOr(#)}
img src={/img/buttons/ + S.attr(icon).openOr() + .png}
alt=/
div class=gloss/
/a
...etc...
}
So every time I need a wrapper or a glossy button I would write
lift:HtmlUI.wrapper ... or lift:HtmlUI.button
Now if I had a chance to create xhtml prefix alias for this snippet
(something like that:
LiftRules.addSnippetMapping(ui - HtmlUI)
), than my xhtml templates would reduce a lot (ui:wrapper ... and
ui:button ...) along with increased readability.
--~--~-~--~~~---~--~~
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 vs Rails
On Sun, Aug 23, 2009 at 8:45 AM, jack jack.wid...@gmail.com wrote: I really do want to use Lift instead of Rails. Could somebody please convince me? :) I used to struggle with Rails (and to a lesser extent Merb) because it was difficult to do things that weren't the Rails Way. Lift does have a recommended way of doing things as well but I haven't yet run into issues where I had to fight the framework in order to do things my way. This aspect along with the performance and ease of use makes it my preferred framework by far. If you are not doing the coding yourself, finding a programmer might be an issue as experienced Scala developers (not to mention Lift developers) are probably much harder to find then Ruby and Rails developers. As far as existing libraries, being able to use any Java library is a big plus. It can sometimes be hard to find a good (or maintained) ruby library in order to use an existing binary (C/C++) library. The only thing at the moment that I would like to be better is Text Editor/IDE support. I don't find this to be too bad of a problem though as I spent all of my Ruby development struggling with the same things. I ended up using Vim for ruby development, and have now turned to Emacs for Scala development. For learning Scala I used Eclipse as it did a good job of giving me documentation for Classes/Methods. After a couple of months of coding I only have to reference the scaladocs once in a while as I find the language to be very natural. But these are issues that you will run into with Ruby development too, as getting good IDE support for a dynamic language can be even more difficult. I'd recommend Lift for your project, especially considering you want to use plenty of Ajax/Comet. I never even considered using Comet in a web project of mine until I started using Lift. The only case where I might recommend Rails is if you are not a decent coder yourself and you aren't able to find a good Lift developer to work with. Hope this helps -- Derek Williams --~--~-~--~~~---~--~~ 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: Notes from 8/19/09 Lift Committers Call - LIFT SESSION REPLICATION DISCUSSION
On Sun, Aug 23, 2009 at 4:50 AM, Kevin Wright kev.lee.wri...@googlemail.com wrote: I'm wondering if we can't leverage JavaSpaces to handle a lot of this stuff. From my experience with the technology it seems to be a pretty good fit for the problem. Two reasons: - JavaSpaces is as far as I know, GPL and we will not mix any GPL into Lift - It doesn't solve the issue with low-level session replication which relies on serialization of the session data for transfer to another app server instance. On Sun, Aug 23, 2009 at 11:06 AM, marius d. marius.dan...@gmail.comwrote: Changed the thread subject ... Marius On Aug 22, 6:17 pm, marius d. marius.dan...@gmail.com wrote: Great thing Dave. Roughly having a bound function f that user provided say in an ajaxButton call.The function f may hold references to other functions, session/request-vars, references to the snippets instances etc. One condition is that every object in the graph should be serializable and that is beyond our control (but more on the programmer's control). Of course for the function f to be correctly applied on any node, the whole object graph should be replicated among cluster nodes). Now assuming that we can serialize any function/object on the wire there is still one thing to solve. As you know LiftSession and HTTPSession are not the same things. a LiftSession is linked to a HTTPSession so we'd probably need to replicate both? Systems like stax have their own way to make a HTTPSession available to any cluster node AFAIK by saving it into a database. Into such environments I'm not such if we know the actual machines identity andif we would have built our own replication system in a clustered env. that would probably not work ... so a node to node replication system may not be possible in stax like environments but would certainly work on other models. Still persisting a LiftSession in DB shoud and sounds like it is more environment agnostic. In a glance node-to-node session replication sounds to be a little more efficient that DB session store we should probably keep an eye on both models. Other model that could be to lazily replicate sessions across cluster nodes such as: 1. Upon a request Node A advertises to other nodes that it hods the last state for session X 2. Upon a subsequent call that hits node B it won;t have the session but it would know where the session exist a fetch the state from that node 3. Node Node B advertises that it has the last state for session X ... Such model is not very fail over proof as at a given point in time different versions of the session state which may or may not enough. The most consistent model seems to be to store the session context into a centralized session store ... but that would induce a single point of failure unless the session store itself is redundant. Last but not the least Java serialization is sub-optimal but I'm not sure how many alternatives we'd have in order to make sure that we have a consistent reference graph that can be represented on the wire.. Br's, Marius On Aug 22, 5:25 pm, David Pollak feeder.of.the.be...@gmail.com wrote: On Sat, Aug 22, 2009 at 2:31 AM, marius d. marius.dan...@gmail.com wrote: Greg/Viktor, We could meet and discuss using whatever means (skype, chat, mail etc.) and brainstorm what can we do about this. Even though I like a lot sticky sessions idiom it is not enough and I think we do have a consensus here :) ... of course any committer is more then welcome to participate. On the substance point (I've moved this to the Lift list), we may want to use some aspecty thing to analyze the potential serializability of functions that are added to the LiftSession. I'm betting there's no actual barrier to serializing stuff in the normal case except when things refer to the HttpServletRequest (which refers to input/output streams). If we could get an actual analysis, we could develop a better serialization/session moving strategy. Br's, Marius On Aug 22, 12:15 am, Viktor Klang wrote: On Fri, Aug 21, 2009 at 11:12 PM, Meredith Gregory wrote: Marius, i really do want to go over lift's ability to work in vendor supplied clustering solutions. We could do a Skype conf when you're feeling better, Greg. -- 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
[Lift] Re: Lift vs Rails
Looks like you don't need to be convinced :) ... Scala with its features + Java compatibility + Lift's rich set of features + performance of Scala Lift makes it a no brainer. Enumerating all the pros of Scala and Lift would just take way to long. The list of Scala books and the Lift book are enlisted here http://www.scala-lang.org/node/959 Br's, Marius On Aug 23, 5:45 pm, jack jack.wid...@gmail.com wrote: I am doing a startup company that involves both a lot of processing on the backend (in the code) and a decent amount of comet/ajax in the frontend.It is very important that the code quickly on the server. I have seen the light with respect to Scala and Lift looks terrific. My only concern is how new it is and the availability of resources (programmers, books etc). I really do want to use Lift instead of Rails. Could somebody please convince me? :) --~--~-~--~~~---~--~~ 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: Notes from 8/19/09 Lift Committers Call - LIFT SESSION REPLICATION DISCUSSION
On Sun, Aug 23, 2009 at 7:04 PM, David Pollakfeeder.of.the.be...@gmail.com wrote: On Sun, Aug 23, 2009 at 4:50 AM, Kevin Wright kev.lee.wri...@googlemail.com wrote: I'm wondering if we can't leverage JavaSpaces to handle a lot of this stuff. From my experience with the technology it seems to be a pretty good fit for the problem. Two reasons: - JavaSpaces is as far as I know, GPL and we will not mix any GPL into Lift JavaSpaces is just the specification. There are two implementations I know of: BlitzJavaSpaces (BSD) and GigaSpaces (proprietary?). I don't have hands on experience with either. - It doesn't solve the issue with low-level session replication which relies on serialization of the session data for transfer to another app server instance. Arthur --~--~-~--~~~---~--~~ 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: Structuring Web Application
On Sun, Aug 23, 2009 at 5:15 AM, greekscala hellectro...@gmail.com wrote: Hello Timothy, thank you. I know that I do not need Spring for Scala. I dont expressed it well. How do I glue my app parts together. And how do I glue the lift part with a facade or application service of my domain layer. Use traits to describe the pieces of your business logic rather than classes. Traits can be composed very easily. Don't use new, but use object's as factories that make run-time decisions about how to compose traits and vend them. Thanks for your help On 23 Aug., 13:12, Timothy Perrett timo...@getintheloop.eu wrote: Can you please be more specific about your app tier that you wish to access - im unfortunately not seeing what hurdle stops you from accessing it just as you would from Java? Cheers, Tim On Aug 22, 9:45 pm, greekscala hellectro...@gmail.com wrote: Hello Lift Community, I want to implement a new Project in Scala with Lift. I am new to Scala/Lift. Scala looks great and it expanded my horizon. FP is a new concept to me. My background is Java and a little bit of Spring. I read three Scala books and a lot on blogs. But there is a missing part for me on how to combine my classes. I read the Scalable Components Paper and I dont get it 100%. I need a little bit more input on structuring a web app and I hope to get the 100% with you guys. With Spring you let the container manage the classes. ok. I think my problem is, I dont know how you structured a web app in days without Spring. I would like to have Lift access my domain logic over an application layer (Domain Driven Design). In Wicket I would have my SpringBean annotation. So I hope to understand, how - can I access my app layer? - how could I organize my domain logic. I want to use DDD. I know I have to use object and class in a bigger sense...? I hope you guys can give me some hints. Thanks a lot -- 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: Lift vs Rails
Jack, I started doing Rails in 2004. At the time, there was one Rails book and a few Ruby books. There had been a few RubyConf conferences and SD Forum had the first Ruby Rails conference in Silicon Valley. Ruby was mid-pack in the second set of the Tiobe index. By those metrics, Lift and Scala are about 4-5 years behind Ruby and Rails. From an operational standpoint, Scala and Lift are light-years ahead of where Ruby/Rails was in 2004... in fact, managing moderate to high traffic Scala/Lift sites is much easier than Ruby/Rails/Mongrel is today. Because Lift and Scala can take advantage of every Java library, there is similar richness in the quantity and quality of external libraries. Two year ago, Scala was virtually unknown. At JavaOne this year, Scala and Lift books were 3 of the top 10 best sellers at the JavaOne bookstore. Most Scala and Lift talks were standing room only. As with every new technology, there are adoption risks, but I think Scala crossed the chasm this year at JavaOne and is entering the early mainstream phase. Companies including Twitter, LinkedIn, SAP, OfficeDepot, etc. all have Scala in production. I can put you in touch with a dozen high quality Lift/Scala developers... folks who are currently making their living with Java/Ruby/Obj-C, but would rather do Scala and Lift coding. If you've got funding, I can find you good Scala Lift developers. Thanks, David On Sun, Aug 23, 2009 at 7:45 AM, jack jack.wid...@gmail.com wrote: I am doing a startup company that involves both a lot of processing on the backend (in the code) and a decent amount of comet/ajax in the frontend.It is very important that the code quickly on the server. I have seen the light with respect to Scala and Lift looks terrific. My only concern is how new it is and the availability of resources (programmers, books etc). I really do want to use Lift instead of Rails. Could somebody please convince me? :) -- 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: Problem building my app in Windows
Please make sure you are: - Using Maven 2.0.9 or greater - Running things from the Windows command prompt (not the Git shell or Cygwin) I regularly use Windows for Scala development. I wrote *Beginning Scala* on a Windows machine and my traveling laptop is a Windows machine. I have not experienced any problems with Lift, Scala, or Maven on Windows. On Sat, Aug 22, 2009 at 10:08 PM, DFectuoso santiago1...@gmail.com wrote: Hi, i have been working in linux and mac and having a wonderful time with mvn and everything lift's got to offer =). Sadly i want to teach lift to a person who uses Windows as he's only OS, so i am trying to configure hes computer, neither him or me are experts on this OS. I installed java 1.6 and ran into some problems, so i downloaded 1.5_20 and now i have java and maven working, but while trying to compile a very simple file i get the an error(posted at the end of this post); and i'm wondering if theres anything i need to know, seems like it could be some permisions or something like that. Any ideas? People running on windows how did you configure you box? Thanks, The error: [INFO] Trace org.apache.maven.lifecycle.LifecycleExecutionException: Unable to get dependency information: Unable to read the metadata file for artifact 'net.liftweb:lift-co re:jar': Error getting POM for 'net.liftweb:lift-core' from the repository: Unab le to store local copy of metadata: Error updating group repository metadata net.liftweb:lift-core:pom:1.1-SNAPSHOT for project net.liftweb:lift-core net.liftweb:lift-core:jar:1.1-SNAPSHOT from the specified remote repositories: central (http://repo1.maven.org/maven2), scala-tools.org (http://scala-tools.org/repo-releases), scala-tools.org.snapshots (http://scala-tools.org/repo-snapshots), http://www.lag.net/repo/ (http://www.lag.net/repo/) Path to dependency: 1) net.twitknow:4Disc:war:0.1 at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(Defa ultLifecycleExecutor.java:575) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLi fecycle(DefaultLifecycleExecutor.java:499) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(Defau ltLifecycleExecutor.java:478) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHan dleFailures(DefaultLifecycleExecutor.java:330) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegmen ts(DefaultLifecycleExecutor.java:291) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute (DefaultLi fecycleExecutor.java:142) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java: 336) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java: 129) at org.apache.maven.cli.MavenCli.main(MavenCli.java:287) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl. java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAcces sorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:592) at org.codehaus.classworlds.Launcher.launchEnhanced (Launcher.java:315) at org.codehaus.classworlds.Launcher.launch(Launcher.java:255) at org.codehaus.classworlds.Launcher.mainWithExitCode (Launcher.java:430) at org.codehaus.classworlds.Launcher.main(Launcher.java:375) Caused by: org.apache.maven.artifact.resolver.ArtifactResolutionException: Unabl e to get dependency information: Unable to read the metadata file for artifact ' net.liftweb:lift-core:jar': Error getting POM for 'net.liftweb:lift- core' from t he repository: Unable to store local copy of metadata: Error updating group repo sitory metadata net.liftweb:lift-core:pom:1.1-SNAPSHOT for project net.liftweb:lift-core net.liftweb:lift-core:jar:1.1-SNAPSHOT from the specified remote repositories: central (http://repo1.maven.org/maven2), scala-tools.org (http://scala-tools.org/repo-releases), scala-tools.org.snapshots (http://scala-tools.org/repo-snapshots), http://www.lag.net/repo/ (http://www.lag.net/repo/) Path to dependency: 1) net.twitknow:4Disc:war:0.1 at org.apache.maven.artifact.resolver.DefaultArtifactCollector.recurse(D efaultArtifactCollector.java:403) at org.apache.maven.artifact.resolver.DefaultArtifactCollector.collect(D efaultArtifactCollector.java:76) at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTra nsitively(DefaultArtifactResolver.java:300) at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTra nsitively(DefaultArtifactResolver.java:288) at org.apache.maven.plugin.DefaultPluginManager.resolveTransitiveDepende ncies(DefaultPluginManager.java:1415) at org.apache.maven.plugin.DefaultPluginManager.executeMojo (DefaultPlugi nManager.java:405)
[Lift] Re: Problem building my app in Windows
Yea, my steps where install java 1.5_20, then ran the windows installer i got from liftweb.com, then tried to run the application and basicly got into this problem, seems like maven is trying to download information from lift's repo and it get an error while trying to store it on localhost, i'll keep messing with this. David, yea im sure it works, there no doubt about it, and no religious war was intented i just dont know if i was missing something obvious and wanted to ask.(btw its vista and im running it on the command prompt, with run as administrator selected). On Aug 23, 12:20 pm, David Pollak feeder.of.the.be...@gmail.com wrote: Please make sure you are: - Using Maven 2.0.9 or greater - Running things from the Windows command prompt (not the Git shell or Cygwin) I regularly use Windows for Scala development. I wrote *Beginning Scala* on a Windows machine and my traveling laptop is a Windows machine. I have not experienced any problems with Lift, Scala, or Maven on Windows. On Sat, Aug 22, 2009 at 10:08 PM, DFectuoso santiago1...@gmail.com wrote: Hi, i have been working in linux and mac and having a wonderful time with mvn and everything lift's got to offer =). Sadly i want to teach lift to a person who uses Windows as he's only OS, so i am trying to configure hes computer, neither him or me are experts on this OS. I installed java 1.6 and ran into some problems, so i downloaded 1.5_20 and now i have java and maven working, but while trying to compile a very simple file i get the an error(posted at the end of this post); and i'm wondering if theres anything i need to know, seems like it could be some permisions or something like that. Any ideas? People running on windows how did you configure you box? Thanks, The error: [INFO] Trace org.apache.maven.lifecycle.LifecycleExecutionException: Unable to get dependency information: Unable to read the metadata file for artifact 'net.liftweb:lift-co re:jar': Error getting POM for 'net.liftweb:lift-core' from the repository: Unab le to store local copy of metadata: Error updating group repository metadata net.liftweb:lift-core:pom:1.1-SNAPSHOT for project net.liftweb:lift-core net.liftweb:lift-core:jar:1.1-SNAPSHOT from the specified remote repositories: central (http://repo1.maven.org/maven2), scala-tools.org (http://scala-tools.org/repo-releases), scala-tools.org.snapshots (http://scala-tools.org/repo-snapshots), http://www.lag.net/repo/(http://www.lag.net/repo/) Path to dependency: 1) net.twitknow:4Disc:war:0.1 at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(Defa ultLifecycleExecutor.java:575) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLi fecycle(DefaultLifecycleExecutor.java:499) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(Defau ltLifecycleExecutor.java:478) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHan dleFailures(DefaultLifecycleExecutor.java:330) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegmen ts(DefaultLifecycleExecutor.java:291) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute (DefaultLi fecycleExecutor.java:142) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java: 336) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java: 129) at org.apache.maven.cli.MavenCli.main(MavenCli.java:287) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl. java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAcces sorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:592) at org.codehaus.classworlds.Launcher.launchEnhanced (Launcher.java:315) at org.codehaus.classworlds.Launcher.launch(Launcher.java:255) at org.codehaus.classworlds.Launcher.mainWithExitCode (Launcher.java:430) at org.codehaus.classworlds.Launcher.main(Launcher.java:375) Caused by: org.apache.maven.artifact.resolver.ArtifactResolutionException: Unabl e to get dependency information: Unable to read the metadata file for artifact ' net.liftweb:lift-core:jar': Error getting POM for 'net.liftweb:lift- core' from t he repository: Unable to store local copy of metadata: Error updating group repo sitory metadata net.liftweb:lift-core:pom:1.1-SNAPSHOT for project net.liftweb:lift-core net.liftweb:lift-core:jar:1.1-SNAPSHOT from the specified remote repositories: central (http://repo1.maven.org/maven2), scala-tools.org (http://scala-tools.org/repo-releases), scala-tools.org.snapshots (http://scala-tools.org/repo-snapshots), http://www.lag.net/repo/(http://www.lag.net/repo/) Path to dependency: 1)
[Lift] Re: Lift vs Rails
Jack, For my money Rails is somewhat more mature than lift, but lift is on a trajectory to overtake Rails feature-wise and is certainly already there performance-wise. The real issue, to me, is Scala vs Ruby. Quite apart from being more slightly more performant and equally expressive, the real win of Scala is its types allow you scale the code over time. What i mean by that is that a type system like Scala's allows you to - navigate code - substitute and refactor code while preserving properties - design for abstraction One of the biggest problems of Ruby code -- and seasoned Ruby devs will tell you this -- is that in a code block of 10 lines -- that is part of say a 100K line project -- if i point to a line of code, you can't tell me what it is doing. This is compounded by the fact that with monkey-patching, even if you thought you knew, with the next check-in in some other part of the codebase, you don't. In the same situation in Scala any given expression has a type that the compiler may infer. So, i don't need to know Joe Bloggs who wrote that block. i reason about what it does through the types. This gives better separation of *dev team*s -- not just code blocks. This is good if you want to scale up your efforts organizationally -- either by spreading it out over different groups working at approximately the same time, or by spreading development out over time. i'm not saying this is a silver bullet. Software is hard and there are always non-linear or cyclical dependencies, but types really help with practical development. After a while, you get to the point where you can design using types, and then cutting the code is like falling off a log. At this point designing for highly leveraged abstractions that significantly reduce the amount of code and increase the applicability of code is within your grasp. The guy who makes these points in a much less zealous and much more reasoned, dispassionate way with lots of practical examples is Bill Venners. His recent talk for JavaOne -- which is on video (i'll look for the link) -- is quite powerful in this regard. Heck, even Charles Nutter, in his own blog acknowledges that Scala is the heir apparent of Java for the JVM. Don't get me wrong -- i'm not a Scala biggot. There are a lot of corners of this language i don't like. For my money, Haskell is a better language. But, Haskell doesn't run on the JVM. You can't ship Haskell apps as jars or wars and smoothly hook them into maven repos, and you can't very easily build Haskell apps using standard JVM libs. So, that's why Scala, and that's why lift. Well... there's also the fact that the Scala and lift communities are populated by very impressive people who are very open and incredibly responsive. Best wishes, --greg On Sun, Aug 23, 2009 at 7:45 AM, jack jack.wid...@gmail.com wrote: I am doing a startup company that involves both a lot of processing on the backend (in the code) and a decent amount of comet/ajax in the frontend.It is very important that the code quickly on the server. I have seen the light with respect to Scala and Lift looks terrific. My only concern is how new it is and the availability of resources (programmers, books etc). I really do want to use Lift instead of Rails. Could somebody please convince me? :) -- L.G. Meredith Managing Partner Biosimilarity LLC 1219 NW 83rd St Seattle, WA 98117 +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] Re: Notes from 8/19/09 Lift Committers Call - LIFT SESSION REPLICATION DISCUSSION
Hmmm .. I'm wondering if we can write a Scala compiler plugin that transform functions provided to Lift's S/SHtml function etc. into a richer FunctionX implementation that knows how to serialize it's members. We could restrict the types that as LiftSerializable on top of primitives, Calenars, SessionVar/RequestVar etc. If users need their own classes to be LiftSerilizable they would have to implement LiftSerializable trait. Thoughts? Br's, Marius On Aug 23, 8:30 pm, marius d. marius.dan...@gmail.com wrote: At a first glace Java serialization is needed because of its awareness of the reference graph. But in the same time it does not perform well. One way might be the byte level instrumentation that would induce code to figure out the reference graph and know how to stream-ify it using a given efficient protocol. But that induces risks and it involves tons of work. I think would be doable though. The problem is not really the technology of propagating session information to other nodes. That's the easiest part, but tough one is figuring out the low level reference graph and serialization semantics. This is why JINI, JavaSpaces, JGroups, CORBA, JXTA, you name it, are unlikely to help solving the fundamental problem. Br's, Marius On Aug 23, 8:16 pm, Arthur avand...@gmail.com wrote: On Sun, Aug 23, 2009 at 7:04 PM, David Pollakfeeder.of.the.be...@gmail.com wrote: On Sun, Aug 23, 2009 at 4:50 AM, Kevin Wright kev.lee.wri...@googlemail.com wrote: I'm wondering if we can't leverage JavaSpaces to handle a lot of this stuff. From my experience with the technology it seems to be a pretty good fit for the problem. Two reasons: - JavaSpaces is as far as I know, GPL and we will not mix any GPL into Lift JavaSpaces is just the specification. There are two implementations I know of: BlitzJavaSpaces (BSD) and GigaSpaces (proprietary?). I don't have hands on experience with either. - It doesn't solve the issue with low-level session replication which relies on serialization of the session data for transfer to another app server instance. Arthur --~--~-~--~~~---~--~~ 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: Notes from 8/19/09 Lift Committers Call - LIFT SESSION REPLICATION DISCUSSION
Also FlyObjectSpace (http://www.flyobjectspace.com/) It comes with a suitable licence and has a Scala version. Not used it myself but I'm definitely about to check it out... I'd also be willing to be that the devs would be extremely accommodating if it were being used in a high profile project such as Lift. :) On Sun, Aug 23, 2009 at 6:16 PM, Arthur avand...@gmail.com wrote: On Sun, Aug 23, 2009 at 7:04 PM, David Pollakfeeder.of.the.be...@gmail.com wrote: On Sun, Aug 23, 2009 at 4:50 AM, Kevin Wright kev.lee.wri...@googlemail.com wrote: I'm wondering if we can't leverage JavaSpaces to handle a lot of this stuff. From my experience with the technology it seems to be a pretty good fit for the problem. Two reasons: - JavaSpaces is as far as I know, GPL and we will not mix any GPL into Lift JavaSpaces is just the specification. There are two implementations I know of: BlitzJavaSpaces (BSD) and GigaSpaces (proprietary?). I don't have hands on experience with either. - It doesn't solve the issue with low-level session replication which relies on serialization of the session data for transfer to another app server instance. Arthur --~--~-~--~~~---~--~~ 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: Notes from 8/19/09 Lift Committers Call - LIFT SESSION REPLICATION DISCUSSION
On Aug 23, 9:47 pm, Ryan Donahue donahu...@gmail.com wrote: Marius, this sound like a very good idea. This would allow the app developer to decide whether to spend the extra time thinking about serialization/session replication. If you don't need it, then you don't use the compiler plugin and just continue building lift apps as you have been. If you do need it, then you use the plugin and you'll have compiler errors or warnings telling you where you need to make use of LiftSerializable. If the serializing problems are handled, would there be any reasons not to tattach the lift objects tohe HttpSession to support existing session replication mechanisms such as Tomcat's? There probably would as typically container's HTTPSession's are using Java's serialization and the above would aim for a different one. On Aug 23, 1:45 pm, marius d. marius.dan...@gmail.com wrote: Hmmm .. I'm wondering if we can write a Scala compiler plugin that transform functions provided to Lift's S/SHtml function etc. into a richer FunctionX implementation that knows how to serialize it's members. We could restrict the types that as LiftSerializable on top of primitives, Calenars, SessionVar/RequestVar etc. If users need their own classes to be LiftSerilizable they would have to implement LiftSerializable trait. Thoughts? Br's, Marius On Aug 23, 8:30 pm, marius d. marius.dan...@gmail.com wrote: At a first glace Java serialization is needed because of its awareness of the reference graph. But in the same time it does not perform well. One way might be the byte level instrumentation that would induce code to figure out the reference graph and know how to stream-ify it using a given efficient protocol. But that induces risks and it involves tons of work. I think would be doable though. The problem is not really the technology of propagating session information to other nodes. That's the easiest part, but tough one is figuring out the low level reference graph and serialization semantics. This is why JINI, JavaSpaces, JGroups, CORBA, JXTA, you name it, are unlikely to help solving the fundamental problem. Br's, Marius On Aug 23, 8:16 pm, Arthur avand...@gmail.com wrote: On Sun, Aug 23, 2009 at 7:04 PM, David Pollakfeeder.of.the.be...@gmail.com wrote: On Sun, Aug 23, 2009 at 4:50 AM, Kevin Wright kev.lee.wri...@googlemail.com wrote: I'm wondering if we can't leverage JavaSpaces to handle a lot of this stuff. From my experience with the technology it seems to be a pretty good fit for the problem. Two reasons: - JavaSpaces is as far as I know, GPL and we will not mix any GPL into Lift JavaSpaces is just the specification. There are two implementations I know of: BlitzJavaSpaces (BSD) and GigaSpaces (proprietary?). I don't have hands on experience with either. - It doesn't solve the issue with low-level session replication which relies on serialization of the session data for transfer to another app server instance. Arthur --~--~-~--~~~---~--~~ 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: Notes from 8/19/09 Lift Committers Call - LIFT SESSION REPLICATION DISCUSSION
Marius, this sound like a very good idea. This would allow the app developer to decide whether to spend the extra time thinking about serialization/session replication. If you don't need it, then you don't use the compiler plugin and just continue building lift apps as you have been. If you do need it, then you use the plugin and you'll have compiler errors or warnings telling you where you need to make use of LiftSerializable. If the serializing problems are handled, would there be any reasons not to attach the lift objects to the HttpSession to support existing session replication mechanisms such as Tomcat's? On Aug 23, 1:45 pm, marius d. marius.dan...@gmail.com wrote: Hmmm .. I'm wondering if we can write a Scala compiler plugin that transform functions provided to Lift's S/SHtml function etc. into a richer FunctionX implementation that knows how to serialize it's members. We could restrict the types that as LiftSerializable on top of primitives, Calenars, SessionVar/RequestVar etc. If users need their own classes to be LiftSerilizable they would have to implement LiftSerializable trait. Thoughts? Br's, Marius On Aug 23, 8:30 pm, marius d. marius.dan...@gmail.com wrote: At a first glace Java serialization is needed because of its awareness of the reference graph. But in the same time it does not perform well. One way might be the byte level instrumentation that would induce code to figure out the reference graph and know how to stream-ify it using a given efficient protocol. But that induces risks and it involves tons of work. I think would be doable though. The problem is not really the technology of propagating session information to other nodes. That's the easiest part, but tough one is figuring out the low level reference graph and serialization semantics. This is why JINI, JavaSpaces, JGroups, CORBA, JXTA, you name it, are unlikely to help solving the fundamental problem. Br's, Marius On Aug 23, 8:16 pm, Arthur avand...@gmail.com wrote: On Sun, Aug 23, 2009 at 7:04 PM, David Pollakfeeder.of.the.be...@gmail.com wrote: On Sun, Aug 23, 2009 at 4:50 AM, Kevin Wright kev.lee.wri...@googlemail.com wrote: I'm wondering if we can't leverage JavaSpaces to handle a lot of this stuff. From my experience with the technology it seems to be a pretty good fit for the problem. Two reasons: - JavaSpaces is as far as I know, GPL and we will not mix any GPL into Lift JavaSpaces is just the specification. There are two implementations I know of: BlitzJavaSpaces (BSD) and GigaSpaces (proprietary?). I don't have hands on experience with either. - It doesn't solve the issue with low-level session replication which relies on serialization of the session data for transfer to another app server instance. Arthur --~--~-~--~~~---~--~~ 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 vs Rails
Thanks Derek for the quick and helpful response. I am going to go with Lift. On Sun, Aug 23, 2009 at 12:49 PM, Derek Williams de...@nebvin.ca wrote: On Sun, Aug 23, 2009 at 8:45 AM, jack jack.wid...@gmail.com wrote: I really do want to use Lift instead of Rails. Could somebody please convince me? :) I used to struggle with Rails (and to a lesser extent Merb) because it was difficult to do things that weren't the Rails Way. Lift does have a recommended way of doing things as well but I haven't yet run into issues where I had to fight the framework in order to do things my way. This aspect along with the performance and ease of use makes it my preferred framework by far. If you are not doing the coding yourself, finding a programmer might be an issue as experienced Scala developers (not to mention Lift developers) are probably much harder to find then Ruby and Rails developers. As far as existing libraries, being able to use any Java library is a big plus. It can sometimes be hard to find a good (or maintained) ruby library in order to use an existing binary (C/C++) library. The only thing at the moment that I would like to be better is Text Editor/IDE support. I don't find this to be too bad of a problem though as I spent all of my Ruby development struggling with the same things. I ended up using Vim for ruby development, and have now turned to Emacs for Scala development. For learning Scala I used Eclipse as it did a good job of giving me documentation for Classes/Methods. After a couple of months of coding I only have to reference the scaladocs once in a while as I find the language to be very natural. But these are issues that you will run into with Ruby development too, as getting good IDE support for a dynamic language can be even more difficult. I'd recommend Lift for your project, especially considering you want to use plenty of Ajax/Comet. I never even considered using Comet in a web project of mine until I started using Lift. The only case where I might recommend Rails is if you are not a decent coder yourself and you aren't able to find a good Lift developer to work with. Hope this helps -- Derek Williams --~--~-~--~~~---~--~~ 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 losing time?
Derek Chen-Becker dchenbec...@gmail.com writes: It should be very safe to use 1.0.1-SNAPSHOT. I'm planning on spinning the release of 1.0.1 GA next Wednesday, so we're in a code freeze starting Sunday. Really, the 1.0 line is strictly bug-fix at this point (1.1-SNAPSHOT is where new features make it in). So far, the things that have made it into 1.0.1 are: 1. Proper Oracle support 2. Fix for PostgreSQL double type 3. The DateTime fix 4. Some fixes for the Textile parser 5. Some minor XML parsing fixes (PCDataMarkupParser) 6. Some Actor fixes Derek, with the flurry of changes you're doing to the Db code (which is nice :-), it's increasingly difficult to maintain my own copy which fixes http://github.com/dpp/liftweb/issues#issue/36 Any chance to get this included in 1.1 soon? (It's a two line fix :-)? /Jeppe --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to liftweb@googlegroups.com To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Lift vs Rails
Thanks Marius. I agree its a no brainer. Just wanted some independent confirmation!. On Sun, Aug 23, 2009 at 1:08 PM, marius d. marius.dan...@gmail.com wrote: Looks like you don't need to be convinced :) ... Scala with its features + Java compatibility + Lift's rich set of features + performance of Scala Lift makes it a no brainer. Enumerating all the pros of Scala and Lift would just take way to long. The list of Scala books and the Lift book are enlisted here http://www.scala-lang.org/node/959 Br's, Marius On Aug 23, 5:45 pm, jack jack.wid...@gmail.com wrote: I am doing a startup company that involves both a lot of processing on the backend (in the code) and a decent amount of comet/ajax in the frontend.It is very important that the code quickly on the server. I have seen the light with respect to Scala and Lift looks terrific. My only concern is how new it is and the availability of resources (programmers, books etc). I really do want to use Lift instead of Rails. Could somebody please convince me? :) --~--~-~--~~~---~--~~ 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: Notes from 8/19/09 Lift Committers Call - LIFT SESSION REPLICATION DISCUSSION
Sure thing Greg. On Aug 23, 9:59 pm, Meredith Gregory lgreg.mered...@gmail.com wrote: Marius, This is closely related to the proposal to deal with http streams via delimited continuations. Sorry i haven't fleshed this out a bit. Let me put my thoughts on paper/pseudo code and email it out for comment in a day or so. Best wishes, --greg On Sun, Aug 23, 2009 at 10:45 AM, marius d. marius.dan...@gmail.com wrote: Hmmm .. I'm wondering if we can write a Scala compiler plugin that transform functions provided to Lift's S/SHtml function etc. into a richer FunctionX implementation that knows how to serialize it's members. We could restrict the types that as LiftSerializable on top of primitives, Calenars, SessionVar/RequestVar etc. If users need their own classes to be LiftSerilizable they would have to implement LiftSerializable trait. Thoughts? Br's, Marius On Aug 23, 8:30 pm, marius d. marius.dan...@gmail.com wrote: At a first glace Java serialization is needed because of its awareness of the reference graph. But in the same time it does not perform well. One way might be the byte level instrumentation that would induce code to figure out the reference graph and know how to stream-ify it using a given efficient protocol. But that induces risks and it involves tons of work. I think would be doable though. The problem is not really the technology of propagating session information to other nodes. That's the easiest part, but tough one is figuring out the low level reference graph and serialization semantics. This is why JINI, JavaSpaces, JGroups, CORBA, JXTA, you name it, are unlikely to help solving the fundamental problem. Br's, Marius On Aug 23, 8:16 pm, Arthur avand...@gmail.com wrote: On Sun, Aug 23, 2009 at 7:04 PM, David Pollakfeeder.of.the.be...@gmail.com wrote: On Sun, Aug 23, 2009 at 4:50 AM, Kevin Wright kev.lee.wri...@googlemail.com wrote: I'm wondering if we can't leverage JavaSpaces to handle a lot of this stuff. From my experience with the technology it seems to be a pretty good fit for the problem. Two reasons: - JavaSpaces is as far as I know, GPL and we will not mix any GPL into Lift JavaSpaces is just the specification. There are two implementations I know of: BlitzJavaSpaces (BSD) and GigaSpaces (proprietary?). I don't have hands on experience with either. - It doesn't solve the issue with low-level session replication which relies on serialization of the session data for transfer to another app server instance. Arthur -- L.G. Meredith Managing Partner Biosimilarity LLC 1219 NW 83rd St Seattle, WA 98117 +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] Re: Notes from 8/19/09 Lift Committers Call - LIFT SESSION REPLICATION DISCUSSION
On Sun, Aug 23, 2009 at 10:45 AM, marius d. marius.dan...@gmail.com wrote: Hmmm .. I'm wondering if we can write a Scala compiler plugin that transform functions provided to Lift's S/SHtml function etc. into a richer FunctionX implementation that knows how to serialize it's members. We could restrict the types that as LiftSerializable on top of primitives, Calenars, SessionVar/RequestVar etc. If users need their own classes to be LiftSerilizable they would have to implement LiftSerializable trait. I think we can do it without explicit traits. I think we just need to walk the graph for everything that's added to the LiftSession and see where it leads. Any graph we can walk is something that we can serialize... even without Java serialization. Any graph that ends in globals or some class that refers to native stuff (e.g., IO), then we're toast. Thoughts? Br's, Marius On Aug 23, 8:30 pm, marius d. marius.dan...@gmail.com wrote: At a first glace Java serialization is needed because of its awareness of the reference graph. But in the same time it does not perform well. One way might be the byte level instrumentation that would induce code to figure out the reference graph and know how to stream-ify it using a given efficient protocol. But that induces risks and it involves tons of work. I think would be doable though. The problem is not really the technology of propagating session information to other nodes. That's the easiest part, but tough one is figuring out the low level reference graph and serialization semantics. This is why JINI, JavaSpaces, JGroups, CORBA, JXTA, you name it, are unlikely to help solving the fundamental problem. Br's, Marius On Aug 23, 8:16 pm, Arthur avand...@gmail.com wrote: On Sun, Aug 23, 2009 at 7:04 PM, David Pollakfeeder.of.the.be...@gmail.com wrote: On Sun, Aug 23, 2009 at 4:50 AM, Kevin Wright kev.lee.wri...@googlemail.com wrote: I'm wondering if we can't leverage JavaSpaces to handle a lot of this stuff. From my experience with the technology it seems to be a pretty good fit for the problem. Two reasons: - JavaSpaces is as far as I know, GPL and we will not mix any GPL into Lift JavaSpaces is just the specification. There are two implementations I know of: BlitzJavaSpaces (BSD) and GigaSpaces (proprietary?). I don't have hands on experience with either. - It doesn't solve the issue with low-level session replication which relies on serialization of the session data for transfer to another app server instance. Arthur -- 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: alternate webroot using Boot?
Are you just looking to pass certain requests down the Servlet's filter
chain so they can be handled generically by the app server?
You can set:
LiftRules.liftRequest.append {
case Req(static_stuff :: _, _, _) = false
}
That'll make /static_stuff/... all get passed through to the web container.
On Sat, Aug 22, 2009 at 9:29 PM, Grant Wood smackt...@gmail.com wrote:
Thanks David,
I think your best bet is to serve your static content via a front-end web
server (I use Nginx) and route all the app-related requests to your
container.
I was trying to avoid that for this project. Back to using /content/
for everything static. Nginx is a great suggestion for this, thanks!
-Grant
On Aug 22, 8:48 pm, David Pollak feeder.of.the.be...@gmail.com
wrote:
On Sat, Aug 22, 2009 at 4:51 PM, Grant Wood smackt...@gmail.com wrote:
How can I tell a Lift app to use an alternate webroot (holding all my
html, static templates, images, etc)? Essentially, I want my
application to look in a folder of my choosing for content, rather
than in the webapp directory as it does by default.
I can't be the only person who has to manage/deploy content in a
separate process and system than the application,
I think you're the first person that has asked for this.
so there is likely a
simple LiftRule I can override in Boot.scala to use content in a
location other than the war.
I think this might be impossible (or at least very, very difficult.)
Mapping from resources contained in the WAR file into the application
space
is not defined by any spec that I know of and varies on a container by
container basis.
I think your best bet is to serve your static content via a front-end web
server (I use Nginx) and route all the app-related requests to your
container.
However, digging through the
documentation, discussions, and code (LiftServlet, LiftRules, etc.) I
don't see an obvious entry point.
Thank you for your help!
--
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
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[Lift] Re: Structuring Web Application
Hello David, thanks for helping. Do you mean by composing my business logic with traits like the example of Jonas Boner http://jonasboner.com/2008/10/06/real-world-scala-dependency-injection-di.html ? I understand the example. What do you mean by objects? The object Scala keyword? It would be great if you can give me a little example. How to glue it with a Lift Snippet. Thanks kind regards On 23 Aug., 19:23, David Pollak feeder.of.the.be...@gmail.com wrote: On Sun, Aug 23, 2009 at 5:15 AM, greekscala hellectro...@gmail.com wrote: Hello Timothy, thank you. I know that I do not need Spring for Scala. I dont expressed it well. How do I glue my app parts together. And how do I glue the lift part with a facade or application service of my domain layer. Use traits to describe the pieces of your business logic rather than classes. Traits can be composed very easily. Don't use new, but use object's as factories that make run-time decisions about how to compose traits and vend them. Thanks for your help On 23 Aug., 13:12, Timothy Perrett timo...@getintheloop.eu wrote: Can you please be more specific about your app tier that you wish to access - im unfortunately not seeing what hurdle stops you from accessing it just as you would from Java? Cheers, Tim On Aug 22, 9:45 pm, greekscala hellectro...@gmail.com wrote: Hello Lift Community, I want to implement a new Project in Scala with Lift. I am new to Scala/Lift. Scala looks great and it expanded my horizon. FP is a new concept to me. My background is Java and a little bit of Spring. I read three Scala books and a lot on blogs. But there is a missing part for me on how to combine my classes. I read the Scalable Components Paper and I dont get it 100%. I need a little bit more input on structuring a web app and I hope to get the 100% with you guys. With Spring you let the container manage the classes. ok. I think my problem is, I dont know how you structured a web app in days without Spring. I would like to have Lift access my domain logic over an application layer (Domain Driven Design). In Wicket I would have my SpringBean annotation. So I hope to understand, how - can I access my app layer? - how could I organize my domain logic. I want to use DDD. I know I have to use object and class in a bigger sense...? I hope you guys can give me some hints. Thanks a lot -- 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 --~--~-~--~~~---~--~~ 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 Core Missing on mvn install
Hi Derek, I hadn't tried deleting my .m2 directory but unfortunately that didn't help: http://gist.github.com/173501 Peter On Aug 22, 5:46 am, Derek Chen-Becker dchenbec...@gmail.com wrote: I don't see anything in the pom.xml that should be causing an issue. Have you tried wiping your .m2 repository? Sometimes Maven gets stuck. If you do that and you still get the issue, could you post the full output from mvn -e clean install? Derek On Fri, Aug 21, 2009 at 6:42 PM, Peter Robinett pe...@bubblefoundry.comwrote: Hi all, I think I have a problem with my pom.xml file, as when I run 'mvn install' I get an error saying that Lift Core is missing. 'mvn jetty:run' works fine. My pom.xml is here:http://gist.github.com/172540 I'd appreciate any tips. Thanks! Peter Robinett --~--~-~--~~~---~--~~ 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 Core Missing on mvn install
You need to put the snapshots repository in your repository listing: repositories repository idscala-tools.org/id nameScala-Tools Maven2 Repository/name urlhttp://scala-tools.org/repo-releases/url /repository repository idscala-tools.org.snapshots/id nameScala-Tools Maven2 Repository for Snapshots/name urlhttp://scala-tools.org/repo-snapshots/url snapshots / /repository /repositories On Sun, Aug 23, 2009 at 3:48 PM, Peter Robinett pe...@bubblefoundry.comwrote: Hi Derek, I hadn't tried deleting my .m2 directory but unfortunately that didn't help: http://gist.github.com/173501 Peter On Aug 22, 5:46 am, Derek Chen-Becker dchenbec...@gmail.com wrote: I don't see anything in the pom.xml that should be causing an issue. Have you tried wiping your .m2 repository? Sometimes Maven gets stuck. If you do that and you still get the issue, could you post the full output from mvn -e clean install? Derek On Fri, Aug 21, 2009 at 6:42 PM, Peter Robinett pe...@bubblefoundry.com wrote: Hi all, I think I have a problem with my pom.xml file, as when I run 'mvn install' I get an error saying that Lift Core is missing. 'mvn jetty:run' works fine. My pom.xml is here: http://gist.github.com/172540 I'd appreciate any tips. Thanks! Peter Robinett -- 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] JPA blank archetype
Anyone know offhand what the mvn command is to create a blank JPA project (split, not single)? We should probably collect all the archetype commands and put them on the new wiki (and keep them up to date with the latest version number). I'm happy to do it if I can figure out what the right versions are... 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 liftweb+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: JPA blank archetype
I found this in the lift book and used it:
mvn archetype:generate \
-DarchetypeRepository=http://scala-tools.org/repo-snapshots \
-DarchetypeGroupId=net.liftweb \
-DarchetypeArtifactId=lift-archetype-jpa-basic \
-DarchetypeVersion=1.1-SNAPSHOT \
-DgroupId=com.foo.jpaweb \
-DartifactId=JPADemo \
-Dversion=1.0-SNAPSHOT
During the creation of the basic jpa app, I got this:
Downloading:
http://scala-tools.org/repo-snapshots/net/liftweb/lift-archetype-jpa-basic/1.1-SNAPSHOT/lift-archetype-jpa-basic-1.1-SNAPSHOT.jar
44K downloaded (lift-archetype-jpa-basic-1.1-SNAPSHOT.jar)
[WARNING] *** CHECKSUM FAILED - Checksum failed on download: local =
'66b831a190e2e072816e5b2acc8064287d94b371'; remote =
'023a3bb1cf2994e837b18394a2eb3975c8735552' - RETRYING
Downloading:
http://scala-tools.org/repo-snapshots/net/liftweb/lift-archetype-jpa-basic/1.1-SNAPSHOT/lift-archetype-jpa-basic-1.1-SNAPSHOT.jar
44K downloaded (lift-archetype-jpa-basic-1.1-SNAPSHOT.jar)
[WARNING] *** CHECKSUM FAILED - Checksum failed on download: local =
'66b831a190e2e072816e5b2acc8064287d94b371'; remote =
'023a3bb1cf2994e837b18394a2eb3975c8735552' - IGNORING
And a bunch of warnings:
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/pom.xml [line 37,column 16] :
${scala.version} is not a valid reference.
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/pom.xml [line 43,column 16] :
${scala.version} is not a valid reference.
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/pom.xml [line 85,column 25] :
${scala.version} is not a valid reference.
[WARNING] PT Don't override file /private/var/www/lift/admin/pom.xml
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/web/pom.xml [line 13,column
9] : ${parent.artifactId} is not a valid reference.
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/web/pom.xml [line 24,column
16] : ${pom.groupId} is not a valid reference.
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/web/pom.xml [line 26,column
16] : ${pom.version} is not a valid reference.
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/spa/pom.xml [line 14,column
9] : ${parent.artifactId} is not a valid reference.
The build completed successfully anyway. Afterward, I tried mvn
compile in the top directory and got the following error:
[WARNING]
/private/var/www/lift/admin/web/src/main/scala/bootstrap/liftweb/Boot.scala:70:
error: type mismatch;
[WARNING] found :
net.liftweb.util.Box[javax.servlet.http.HttpServletRequest]
[WARNING] required:
net.liftweb.util.Box[net.liftweb.http.provider.HTTPRequest]
[WARNING] case null =
Full(LiftRules.defaultLocaleCalculator(request))
[WARNING] ^
[WARNING]
/private/var/www/lift/admin/web/src/main/scala/bootstrap/liftweb/Boot.scala:75:
error: type mismatch;
[WARNING] found :
(net.liftweb.util.Box[javax.servlet.http.HttpServletRequest]) =
java.util.Locale
[WARNING] required:
(net.liftweb.util.Box[net.liftweb.http.provider.HTTPRequest]) =
java.util.Locale
[WARNING] LiftRules.localeCalculator = localeCalculator _
[WARNING] ^
[WARNING] two errors found
[INFO]
[ERROR] BUILD FAILURE
H. Ideas?
Chas.
Charles F. Munat wrote:
Anyone know offhand what the mvn command is to create a blank JPA
project (split, not single)? We should probably collect all the
archetype commands and put them on the new wiki (and keep them up to
date with the latest version number).
I'm happy to do it if I can figure out what the right versions are...
Chas.
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[Lift] Re: JPA blank archetype
It looks like this is still the older archive before HttpServletRequest →
HTTPRequest. The code in master has the change applied, so I'm not sure why
it's failing. The warnings are normal (I haven't figured out all of the
tricks with the velocity templating), but something isn't being pulled
correctly. Have you tried blowing away your .m2?
Derek
On Sun, Aug 23, 2009 at 9:45 PM, Charles F. Munat c...@munat.com wrote:
I found this in the lift book and used it:
mvn archetype:generate \
-DarchetypeRepository=http://scala-tools.org/repo-snapshots \
-DarchetypeGroupId=net.liftweb \
-DarchetypeArtifactId=lift-archetype-jpa-basic \
-DarchetypeVersion=1.1-SNAPSHOT \
-DgroupId=com.foo.jpaweb \
-DartifactId=JPADemo \
-Dversion=1.0-SNAPSHOT
During the creation of the basic jpa app, I got this:
Downloading:
http://scala-tools.org/repo-snapshots/net/liftweb/lift-archetype-jpa-basic/1.1-SNAPSHOT/lift-archetype-jpa-basic-1.1-SNAPSHOT.jar
44Khttp://scala-tools.org/repo-snapshots/net/liftweb/lift-archetype-jpa-basic/1.1-SNAPSHOT/lift-archetype-jpa-basic-1.1-SNAPSHOT.jar%0A44Kdownloaded
(lift-archetype-jpa-basic-1.1-SNAPSHOT.jar)
[WARNING] *** CHECKSUM FAILED - Checksum failed on download: local =
'66b831a190e2e072816e5b2acc8064287d94b371'; remote =
'023a3bb1cf2994e837b18394a2eb3975c8735552' - RETRYING
Downloading:
http://scala-tools.org/repo-snapshots/net/liftweb/lift-archetype-jpa-basic/1.1-SNAPSHOT/lift-archetype-jpa-basic-1.1-SNAPSHOT.jar
44Khttp://scala-tools.org/repo-snapshots/net/liftweb/lift-archetype-jpa-basic/1.1-SNAPSHOT/lift-archetype-jpa-basic-1.1-SNAPSHOT.jar%0A44Kdownloaded
(lift-archetype-jpa-basic-1.1-SNAPSHOT.jar)
[WARNING] *** CHECKSUM FAILED - Checksum failed on download: local =
'66b831a190e2e072816e5b2acc8064287d94b371'; remote =
'023a3bb1cf2994e837b18394a2eb3975c8735552' - IGNORING
And a bunch of warnings:
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/pom.xml [line 37,column 16] :
${scala.version} is not a valid reference.
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/pom.xml [line 43,column 16] :
${scala.version} is not a valid reference.
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/pom.xml [line 85,column 25] :
${scala.version} is not a valid reference.
[WARNING] PT Don't override file /private/var/www/lift/admin/pom.xml
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/web/pom.xml [line 13,column
9] : ${parent.artifactId} is not a valid reference.
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/web/pom.xml [line 24,column
16] : ${pom.groupId} is not a valid reference.
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/web/pom.xml [line 26,column
16] : ${pom.version} is not a valid reference.
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/spa/pom.xml [line 14,column
9] : ${parent.artifactId} is not a valid reference.
The build completed successfully anyway. Afterward, I tried mvn
compile in the top directory and got the following error:
[WARNING]
/private/var/www/lift/admin/web/src/main/scala/bootstrap/liftweb/Boot.scala:70:
error: type mismatch;
[WARNING] found :
net.liftweb.util.Box[javax.servlet.http.HttpServletRequest]
[WARNING] required:
net.liftweb.util.Box[net.liftweb.http.provider.HTTPRequest]
[WARNING] case null =
Full(LiftRules.defaultLocaleCalculator(request))
[WARNING] ^
[WARNING]
/private/var/www/lift/admin/web/src/main/scala/bootstrap/liftweb/Boot.scala:75:
error: type mismatch;
[WARNING] found :
(net.liftweb.util.Box[javax.servlet.http.HttpServletRequest]) =
java.util.Locale
[WARNING] required:
(net.liftweb.util.Box[net.liftweb.http.provider.HTTPRequest]) =
java.util.Locale
[WARNING] LiftRules.localeCalculator = localeCalculator _
[WARNING] ^
[WARNING] two errors found
[INFO]
[ERROR] BUILD FAILURE
H. Ideas?
Chas.
Charles F. Munat wrote:
Anyone know offhand what the mvn command is to create a blank JPA
project (split, not single)? We should probably collect all the
archetype commands and put them on the new wiki (and keep them up to
date with the latest version number).
I'm happy to do it if I can figure out what the right versions are...
Chas.
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[Lift] Re: JPA blank archetype
No on blowing away m2. I did switch to the blank archetype (which is
what I actually wanted) and it worked fine. But I can try again with the
basic and blowing away m2.
Chas.
Derek Chen-Becker wrote:
It looks like this is still the older archive before HttpServletRequest
→ HTTPRequest. The code in master has the change applied, so I'm not
sure why it's failing. The warnings are normal (I haven't figured out
all of the tricks with the velocity templating), but something isn't
being pulled correctly. Have you tried blowing away your .m2?
Derek
On Sun, Aug 23, 2009 at 9:45 PM, Charles F. Munat c...@munat.com
mailto:c...@munat.com wrote:
I found this in the lift book and used it:
mvn archetype:generate \
-DarchetypeRepository=http://scala-tools.org/repo-snapshots \
-DarchetypeGroupId=net.liftweb \
-DarchetypeArtifactId=lift-archetype-jpa-basic \
-DarchetypeVersion=1.1-SNAPSHOT \
-DgroupId=com.foo.jpaweb \
-DartifactId=JPADemo \
-Dversion=1.0-SNAPSHOT
During the creation of the basic jpa app, I got this:
Downloading:
http://scala-tools.org/repo-snapshots/net/liftweb/lift-archetype-jpa-basic/1.1-SNAPSHOT/lift-archetype-jpa-basic-1.1-SNAPSHOT.jar
44K
http://scala-tools.org/repo-snapshots/net/liftweb/lift-archetype-jpa-basic/1.1-SNAPSHOT/lift-archetype-jpa-basic-1.1-SNAPSHOT.jar%0A44K
downloaded (lift-archetype-jpa-basic-1.1-SNAPSHOT.jar)
[WARNING] *** CHECKSUM FAILED - Checksum failed on download: local =
'66b831a190e2e072816e5b2acc8064287d94b371'; remote =
'023a3bb1cf2994e837b18394a2eb3975c8735552' - RETRYING
Downloading:
http://scala-tools.org/repo-snapshots/net/liftweb/lift-archetype-jpa-basic/1.1-SNAPSHOT/lift-archetype-jpa-basic-1.1-SNAPSHOT.jar
44K
http://scala-tools.org/repo-snapshots/net/liftweb/lift-archetype-jpa-basic/1.1-SNAPSHOT/lift-archetype-jpa-basic-1.1-SNAPSHOT.jar%0A44K
downloaded (lift-archetype-jpa-basic-1.1-SNAPSHOT.jar)
[WARNING] *** CHECKSUM FAILED - Checksum failed on download: local =
'66b831a190e2e072816e5b2acc8064287d94b371'; remote =
'023a3bb1cf2994e837b18394a2eb3975c8735552' - IGNORING
And a bunch of warnings:
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/pom.xml [line 37,column 16] :
${scala.version} is not a valid reference.
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/pom.xml [line 43,column 16] :
${scala.version} is not a valid reference.
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/pom.xml [line 85,column 25] :
${scala.version} is not a valid reference.
[WARNING] PT Don't override file /private/var/www/lift/admin/pom.xml
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/web/pom.xml [line 13,column
9] : ${parent.artifactId} is not a valid reference.
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/web/pom.xml [line 24,column
16] : ${pom.groupId} is not a valid reference.
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/web/pom.xml [line 26,column
16] : ${pom.version} is not a valid reference.
[WARNING] org.apache.velocity.runtime.exception.ReferenceException:
reference : template = archetype-resources/spa/pom.xml [line 14,column
9] : ${parent.artifactId} is not a valid reference.
The build completed successfully anyway. Afterward, I tried mvn
compile in the top directory and got the following error:
[WARNING]
/private/var/www/lift/admin/web/src/main/scala/bootstrap/liftweb/Boot.scala:70:
error: type mismatch;
[WARNING] found :
net.liftweb.util.Box[javax.servlet.http.HttpServletRequest]
[WARNING] required:
net.liftweb.util.Box[net.liftweb.http.provider.HTTPRequest]
[WARNING] case null =
Full(LiftRules.defaultLocaleCalculator(request))
[WARNING] ^
[WARNING]
/private/var/www/lift/admin/web/src/main/scala/bootstrap/liftweb/Boot.scala:75:
error: type mismatch;
[WARNING] found :
(net.liftweb.util.Box[javax.servlet.http.HttpServletRequest]) =
java.util.Locale
[WARNING] required:
(net.liftweb.util.Box[net.liftweb.http.provider.HTTPRequest]) =
java.util.Locale
[WARNING] LiftRules.localeCalculator = localeCalculator _
[WARNING] ^
[WARNING] two errors found
[INFO]
[ERROR] BUILD FAILURE
H. Ideas?
