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Posted to issues@maven.apache.org by "egor kolesnikov (JIRA)" <ji...@codehaus.org> on 2007/11/14 14:44:25 UTC
[jira] Commented: (MNG-3086) NullPointerException in
ResolutionNode.getTrail(ResolutionNode.java:136)
[ http://jira.codehaus.org/browse/MNG-3086?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_113824 ]
egor kolesnikov commented on MNG-3086:
--------------------------------------
There's a small workaround for this bug.
org.apache.maven.artifact.resolver.ResolutionNode.getTrail(ResolutionNode.java:136)
replate initial code
String version = artifact.getSelectedVersion().toString();
artifact.selectVersion( version );
with:
// set the recommended version
if(artifact.getSelectedVersion()==null) {
throw new RuntimeException("selected version is null:" + artifact.getArtifactId());
}
String version = artifact.getSelectedVersion().toString();
artifact.selectVersion( version );
After that Maven will throw definitive exception instead of NPE in this case, thus you could find out which dependency was the actual reason.
In my case the problem was in commons-digester [1.6) - I just added the exact version 1.7 to the root POM's dependencyManagement and maven does not fail any more.
Hope that will help :-)
> NullPointerException in ResolutionNode.getTrail(ResolutionNode.java:136)
> ------------------------------------------------------------------------
>
> Key: MNG-3086
> URL: http://jira.codehaus.org/browse/MNG-3086
> Project: Maven 2
> Issue Type: Bug
> Components: Errors
> Affects Versions: 2.0.7
> Reporter: Thomas Leonard
> Fix For: 2.0.x
>
>
> After upgrading from 2.0.6 to 2.0.7, our build fails with:
> [INFO] [resources:resources]
> [INFO] Using default encoding to copy filtered resources.
> [INFO] ------------------------------------------------------------------------
> [ERROR] FATAL ERROR
> [INFO] ------------------------------------------------------------------------
> [INFO] null
> [INFO] ------------------------------------------------------------------------
> [INFO] Trace
> java.lang.NullPointerException
> at org.apache.maven.artifact.resolver.ResolutionNode.getTrail(ResolutionNode.java:136)
> at org.apache.maven.artifact.resolver.ResolutionNode.filterTrail(ResolutionNode.java:211)
> at org.apache.maven.artifact.resolver.DefaultArtifactCollector.collect(DefaultArtifactCollector.java:89)
> at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTransitively(DefaultArtifactResolver.java:284)
> at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTransitively(DefaultArtifactResolver.java:272)
> at org.apache.maven.plugin.DefaultPluginManager.resolveTransitiveDependencies(DefaultPluginManager.java:1238)
> at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:397)
> at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:539)
> at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:480)
> at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:459)
> 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:280)
> 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)
> Thanks,
--
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