Web Beans + Web Start

[stephanos]

Hi,

how to package a web beans (Weld) Java SE project for web start?

Obviously I have to merge the classes and dependencies of my project into one JAR (via maven-dependency-plugin). But when I start the fat jar from the console, web beans starts scanning the classpath like crazy (because the beans.xml that was formerly only in my JAR is now public (because of the merge)):

SEVERE: Error loading bsh/util/BeanShellBSFEngine.class
java.lang.NoClassDefFoundError: org/apache/bsf/util/BSFEngineImpl
     at java.lang.ClassLoader.defineClass1(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:637)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
     at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
     at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
     at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:323)
     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
     at org.jboss.webbeans.environment.se.discovery.AbstractScanner.handle(AbstractScanner.java:51)
     at org.jboss.webbeans.environment.se.discovery.URLScanner.handleArchiveByFile(URLScanner.java:149)
     at org.jboss.webbeans.environment.se.discovery.URLScanner.handle(URLScanner.java:126)
     at org.jboss.webbeans.environment.se.discovery.URLScanner.scanResources(URLScanner.java:107)
     at org.jboss.webbeans.environment.se.discovery.SEWebBeanDiscovery.scan(SEWebBeanDiscovery.java:71)
     at org.jboss.webbeans.environment.se.discovery.SEWebBeanDiscovery.<init>(SEWebBeanDiscovery.java:45)
     at org.jboss.webbeans.environment.se.StartMain$1.<init>(StartMain.java:69)
     at org.jboss.webbeans.environment.se.StartMain.go(StartMain.java:69)
     at org.jboss.webbeans.environment.se.StartMain.main(StartMain.java:91)
     at org.jboss.webbeans.environment.se.StartMain.main(StartMain.java:86)

There are a few dozen more - Web Beans takes those form my MANIFEST file - yet when I don't add all the paths, the jar signing that is required for web start doesn't work. Excerpt:

Manifest-Version: 1.0
Build-Jdk: 1.6.0_14
Created-By: Apache Maven
Main-Class: org.jboss.webbeans.environment.se.StartMain
Archiver-Version: Plexus Archiver

Name: javax/mail/internet/ContentDisposition.class
SHA1-Digest: XPnae+DgbD05R+E1xCNdWjZ0aWA=

Name: javax/servlet/ServletRequestWrapper.class
SHA1-Digest: NHeo4aV0T3E88+17A/YidgOCqtE=

Name: junit/awtui/TestRunner$2.class
SHA1-Digest: ak43r0m/RwVKKsUxtXNkdkEu6FI=

...

Finally the app crashes:

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/batik/gvt/GraphicsNode
     at java.lang.Class.getDeclaredMethods0(Native Method)
     at java.lang.Class.privateGetDeclaredMethods(Class.java:2444)
     at java.lang.Class.getDeclaredMethods(Class.java:1808)
     at org.jboss.webbeans.introspector.jlr.AnnotatedClassImpl.<init>(AnnotatedClassImpl.java:197)
     at org.jboss.webbeans.introspector.jlr.AnnotatedClassImpl.of(AnnotatedClassImpl.java:108)
     at org.jboss.webbeans.resources.ClassTransformer$1.call(ClassTransformer.java:36)
     at org.jboss.webbeans.resources.ClassTransformer$1.call(ClassTransformer.java:32)
     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
     at java.util.concurrent.FutureTask.run(FutureTask.java:166)
     at org.jboss.webbeans.util.collections.ConcurrentCache.putIfAbsent(ConcurrentCache.java:125)
     at org.jboss.webbeans.resources.ClassTransformer.classForName(ClassTransformer.java:31)
     at org.jboss.webbeans.introspector.jlr.AbstractAnnotatedType.<init>(AbstractAnnotatedType.java:64)
     at org.jboss.webbeans.introspector.jlr.AnnotatedClassImpl.<init>(AnnotatedClassImpl.java:113)
     at org.jboss.webbeans.introspector.jlr.AnnotatedClassImpl.of(AnnotatedClassImpl.java:108)
     at org.jboss.webbeans.resources.ClassTransformer$1.call(ClassTransformer.java:36)
     at org.jboss.webbeans.resources.ClassTransformer$1.call(ClassTransformer.java:32)
     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
     at java.util.concurrent.FutureTask.run(FutureTask.java:166)
     at org.jboss.webbeans.util.collections.ConcurrentCache.putIfAbsent(ConcurrentCache.java:125)
     at org.jboss.webbeans.resources.ClassTransformer.classForName(ClassTransformer.java:31)
     at org.jboss.webbeans.bootstrap.BeanDeployer.addClass(BeanDeployer.java:82)
     at org.jboss.webbeans.bootstrap.BeanDeployer.addClasses(BeanDeployer.java:91)
     at org.jboss.webbeans.bootstrap.WebBeansBootstrap.registerBeans(WebBeansBootstrap.java:152)
     at org.jboss.webbeans.bootstrap.WebBeansBootstrap.boot(WebBeansBootstrap.java:203)
     at org.jboss.webbeans.environment.se.StartMain.go(StartMain.java:73)
     at org.jboss.webbeans.environment.se.StartMain.main(StartMain.java:91)
     at org.jboss.webbeans.environment.se.StartMain.main(StartMain.java:86)
Caused by: java.lang.ClassNotFoundException: org.apache.batik.gvt.GraphicsNode
     at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:323)
     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:336)
     ... 27 more

Creative ideas welcome!

[pmuir]

Takeshi wrote us a DSL based configuration (rather than classpath scanner) https://jira.jboss.org/jira/browse/WELD-5 - it's not integrated into trunk yet (we need to concentrate on the spec for now!), but I would suggest starting with that. Also take a look at the SE module and work out how you can pass the DSL based configuration into it.

When you are done (or ask questions along the way!) create a JIRA issue with a patch. Then, as soon as we get the DSL based configuration in (probably in November), we can look at integrating your patch.

Sound good?

[stephanos]

Well that's a tempting offer - but I got my hands full with own work and would need quite some time to find my way around the Weld code considering my limited developing experience.

This is what I did now to solve the problem:
Dismissed the fat jar concept and using the maven webstart plugin to package a zip with jnlp and (signed) JARs. This is then extracted to some folder inside the WAR (before packaging). Should work - haven't finished it yet :-)

Cheers