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From Jürgen Rose <cptma...@googlemail.com>
Subject NullPointerException when using assembly plugin
Date Fri, 19 Jun 2009 08:48:53 GMT
Hi,

I get a NullPointerException and I don't like it. It is a larger build
with several submodules (which differ in their maven config only
slightly), for most of the modules it does work, but for some not. Any
ideas what the problem might be?

[INFO] [assembly:assembly]
[INFO] Reading assembly descriptor: src/assemble/all.xml
[INFO] ------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] null
[INFO] ------------------------------------------------------------------------
[INFO] Trace
java.lang.NullPointerException
	at org.apache.maven.artifact.DefaultArtifact.equals(DefaultArtifact.java:358)
	at java.util.HashMap.put(HashMap.java:376)
	at java.util.HashSet.add(HashSet.java:200)
	at java.util.AbstractCollection.addAll(AbstractCollection.java:305)
	at org.apache.maven.plugin.assembly.artifact.DefaultDependencyResolver.buildManagedVersionMap(DefaultDependencyResolver.java:160)
	at org.apache.maven.plugin.assembly.archive.DefaultAssemblyArchiver.createArchive(DefaultAssemblyArchiver.java:179)
	at org.apache.maven.plugin.assembly.mojos.AbstractAssemblyMojo.execute(AbstractAssemblyMojo.java:370)
	at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:483)
	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:678)
	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:553)
	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:523)
	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:371)
	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:268)
	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:181)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:356)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:137)
	at org.apache.maven.cli.MavenCli.main(MavenCli.java:356)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	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)
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 41 seconds
[INFO] Finished at: Fri Jun 19 10:44:03 CEST 2009
[INFO] Final Memory: 32M/99M
[INFO] ------------------------------------------------------------------------

Jürgen Rose

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