[jira] Commented: (MNG-1527) NPE in groupID-less POMs

["Wendy Smoak (JIRA)" <ji...@codehaus.org>]

    [ http://jira.codehaus.org/browse/MNG-1527?page=comments#action_63272 ] 

Wendy Smoak commented on MNG-1527:
----------------------------------

It might be worth mentioning this on http://maven.apache.org/guides/mini/guide-releasing.html until it gets fixed.

> NPE in groupID-less POMs
> ------------------------
>
>          Key: MNG-1527
>          URL: http://jira.codehaus.org/browse/MNG-1527
>      Project: Maven 2
>         Type: Bug

>   Components: Artifacts and Repositories
>     Versions: 2.0
>  Environment: JDK 1.5.0_05, Kubunto Linux 5.1
>     Reporter: Arik Kfir

>
>
> I have a parent POM which defines a group ID and is parsed+deployed OK.
> I also have a child POM which extends the parent POM. When running the following on the child POM, I get:
> arik@corleon:~/projects/corleon-site/trunk$ mvn release:prepare -Dusername=arikkfir
> [INFO] Scanning for projects...
> [INFO] Searching repository for plugin with prefix: 'release'.
> [INFO] ----------------------------------------------------------------------------
> [INFO] Building Corleon
> [INFO]    task-segment: [release:prepare] (aggregator-style)
> [INFO] ----------------------------------------------------------------------------
> [INFO] [release:prepare]
> [INFO] What tag name should be used?
> RELEASE-1.0
> [INFO] Verifying there are no local modifications ...
> [INFO] Checking lineage for snapshots ...
> [INFO] Checking dependencies for snapshots ...
> [INFO] Checking plugins for snapshots ...
> [INFO] What is the release version for 'org.corleon:corleon'? [1.0]
> [INFO] Checking in modified POMs
> [INFO] Tagging release with the label RELEASE-1.0.
> [INFO] What is the new development version for 'org.corleon:corleon'? [1.1-SNAPSHOT]
> [INFO] ----------------------------------------------------------------------------
> [ERROR] FATAL ERROR
> [INFO] ----------------------------------------------------------------------------
> [INFO] groupId was null
> [INFO] ----------------------------------------------------------------------------
> [INFO] Trace
> java.lang.NullPointerException: groupId was null
>         at org.apache.maven.artifact.ArtifactUtils.versionlessKey(ArtifactUtils.java:47)
>         at org.apache.maven.plugins.release.helpers.ProjectScmRewriter.restoreScmInfo(ProjectScmRewriter.java:51)
>         at org.apache.maven.plugins.release.PrepareReleaseMojo.execute(PrepareReleaseMojo.java:259)
>         at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:399)
>         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:519)
>         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:482)
>         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:452)
>         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:301)
>         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:214)
>         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:137)
>         at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:316)
>         at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:113)
>         at org.apache.maven.cli.MavenCli.main(MavenCli.java:249)
>         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: 28 seconds
> [INFO] Finished at: Sat Nov 12 02:33:49 IST 2005
> [INFO] Final Memory: 3M/6M
> [INFO] ----------------------------------------------------------------------------
> When I add the groupId to the child POM it works ok.
> Seems to me that the group ID should be inherited from the parent POM as well, no?

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