[ 
http://jira.codehaus.org/browse/MNG-3036?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_101680
 ] 

wing-tung Leung commented on MNG-3036:
--------------------------------------

We encountered the some NPE using maven 2.0.6 without exactly knowing the 
reason. Just upgrading 2.0.7 fixed our problem.

Maybe ok to close this issue?


> NullPointerException when eclipse jars are marked as "provided"
> ---------------------------------------------------------------
>
>                 Key: MNG-3036
>                 URL: http://jira.codehaus.org/browse/MNG-3036
>             Project: Maven 2
>          Issue Type: Bug
>          Components: Dependencies
>    Affects Versions: 2.0.6
>            Reporter: Graham Leggett
>             Fix For: Reviewed Pending Version Assignment
>
>         Attachments: npe-fix.patch, pom.xml
>
>
> When a pde artifact is built that transitively depends on some eclipse jars, 
> and an attempt is made to filter out those eclipse jars by marking the scope 
> as provided, maven NPEs during eclipse:eclipse as follows:
> [INFO] 
> ------------------------------------------------------------------------
> [ERROR] FATAL ERROR
> [INFO] 
> ------------------------------------------------------------------------
> [INFO] null
> [INFO] 
> ------------------------------------------------------------------------
> [INFO] Trace
> java.lang.NullPointerException
>         at 
> org.apache.maven.artifact.resolver.DefaultArtifactCollector.recurse(DefaultArtifactCollector.java:164)
>         at 
> org.apache.maven.artifact.resolver.DefaultArtifactCollector.recurse(DefaultArtifactCollector.java:334)
>         at 
> org.apache.maven.artifact.resolver.DefaultArtifactCollector.recurse(DefaultArtifactCollector.java:334)
>         at 
> org.apache.maven.artifact.resolver.DefaultArtifactCollector.recurse(DefaultArtifactCollector.java:334)
>         at 
> org.apache.maven.artifact.resolver.DefaultArtifactCollector.recurse(DefaultArtifactCollector.java:334)
>         at 
> org.apache.maven.artifact.resolver.DefaultArtifactCollector.recurse(DefaultArtifactCollector.java:334)
>         at 
> org.apache.maven.artifact.resolver.DefaultArtifactCollector.collect(DefaultArtifactCollector.java:75)
>         at 
> org.apache.maven.plugin.ide.AbstractIdeSupportMojo.doDependencyResolution(AbstractIdeSupportMojo.java:447)
>         at 
> org.apache.maven.plugin.ide.AbstractIdeSupportMojo.execute(AbstractIdeSupportMojo.java:398)
>         at 
> org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:443)
>         at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:539)
>         at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:493)
>         at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:463)
>         at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:311)
>         at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:278)
>         at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:143)
>         at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:334)
>         at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:125)
>         at org.apache.maven.cli.MavenCli.main(MavenCli.java:272)
>         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:585)
>         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: 6 seconds
> [INFO] Finished at: Tue Jun 05 19:00:22 BST 2007
> [INFO] Final Memory: 7M/13M
> [INFO] 
> ------------------------------------------------------------------------

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