[jira] Closed: (MNG-648) NPE in ArtifactUtils#artifactMapByVersionlessId(Collection artifacts)

["John Casey (JIRA)" <ji...@codehaus.org>]

     [ http://jira.codehaus.org/browse/MNG-648?page=all ]
     
John Casey closed MNG-648:
--------------------------

    Resolution: Fixed

if artifact list passed in is null, will return an empty Map instance. This is for convenience, so we don't have to do additional null checks, as in the case of plugin parameterization.

> NPE in ArtifactUtils#artifactMapByVersionlessId(Collection artifacts)
> ---------------------------------------------------------------------
>
>          Key: MNG-648
>          URL: http://jira.codehaus.org/browse/MNG-648
>      Project: Maven 2
>         Type: Bug
>   Components: maven-artifact
>     Versions: 2.0-beta-1
>     Reporter: Vincent Siveton

>
>
> Executing the following calls throws an NPE:
> #components\maven-core>m2 site:site
> Same thing for the test case:
> #components\maven-plugins\maven-site-plugin\src\test\projects\site-plugin-test1>m2 site:site
> Stack trace:
> java.lang.NullPointerException
>         at org.apache.maven.artifact.ArtifactUtils.artifactMapByVersionlessId(ArtifactUtils.java:57)
>         at org.apache.maven.project.MavenProject.getReportArtifactMap(MavenProject.java:863)
>         at org.apache.maven.plugin.DefaultPluginManager.getReports(DefaultPluginManager.java:410)
>         at org.apache.maven.doxia.DoxiaMojo.getReports(DoxiaMojo.java:913)
>         at org.apache.maven.doxia.DoxiaMojo.execute(DoxiaMojo.java:213)
>         at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:368)
>         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:172)
>         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:153)
>         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:136)
>         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:106)
>         at org.apache.maven.DefaultMaven.processProject(DefaultMaven.java:294)
>         at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:202)
>         at org.apache.maven.cli.MavenCli.main(MavenCli.java:267)
>         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:303)
>         at org.codehaus.classworlds.Launcher.launch(Launcher.java:243)
>         at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:416)
>         at org.codehaus.classworlds.Launcher.main(Launcher.java:363)

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