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https://jira.codehaus.org/browse/MECLIPSE-738?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Andreas Gudian updated MECLIPSE-738:
------------------------------------
Fix Version/s: 2.10
> NullPointerException in LinkedResource if <locationURI> is present in .project
> ------------------------------------------------------------------------------
>
> Key: MECLIPSE-738
> URL: https://jira.codehaus.org/browse/MECLIPSE-738
> Project: Maven Eclipse Plugin
> Issue Type: Bug
> Affects Versions: 2.9
> Reporter: Martin Böhm
> Assignee: Andreas Gudian
> Priority: Trivial
> Fix For: 2.10
>
> Attachments: linkedResourceProblem.zip,
> MECLIPSE-738-LinkedResource.java.patch
>
>
> I get a reproducable NullPointerException if I call eclipse:eclipse on a
> project that always has a .project-file that contains links with
> <locationURI>-Tags.
> {code}
> [ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-eclipse-plugin:2.9:eclipse (default-cli) on
> project linkedResourceProblem: Execution def
> ault-cli of goal org.apache.maven.plugins:maven-eclipse-plugin:2.9:eclipse
> failed. NullPointerException -> [Help 1]
> org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute
> goal org.apache.maven.plugins:maven-eclipse-plugin:2.9:eclipse (default-cli)
> on project linkedResourceProblem: Execution default-cli of goal
> org.apache.maven.plugins:maven-eclipse-plugin:2.9:eclipse failed.
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:225)
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
> at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
> at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
> at
> org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
> at
> org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
> at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
> at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
> at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
> at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
> at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:601)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
> Caused by: org.apache.maven.plugin.PluginExecutionException: Execution
> default-cli of goal org.apache.maven.plugins:maven-eclipse-plugin:2.9:eclipse
> f
> ailed.
> at
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:110)
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
> ... 19 more
> Caused by: java.lang.NullPointerException
> at
> org.apache.maven.plugin.eclipse.LinkedResource.<init>(LinkedResource.java:131)
> at
> org.apache.maven.plugin.eclipse.writers.EclipseProjectWriter.write(EclipseProjectWriter.java:154)
> at
> org.apache.maven.plugin.eclipse.EclipsePlugin.writeConfiguration(EclipsePlugin.java:1232)
> at
> org.apache.maven.plugin.ide.AbstractIdeSupportMojo.execute(AbstractIdeSupportMojo.java:511)
> at
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
> ... 20 more
> {code}
> If I change the present <locationURI> to <location> in .project and call
> eclipse:eclipse I won't get the error. Also if I call eclipse:clean before
> calling eclipse:eclipse the .project file of course gets cleaned and will be
> created new, so temporary links get lost unfortunately.
> I suppose it has to do with the following lines in
> org.apache.maven.plugin.eclipse.LinkedResource and how the locationNode is
> retrieved.
> {code}
> 119 Xpp3Dom locationNode = node.getChild( "location" );
> 120 Xpp3Dom locationURINode = node.getChild( "locationURI" );
> {code}
> Possible workarounds:
> - Call eclipse:clean before and recreate temporary links again.
> - Replace all <locationURI> with <location> before calling eclipse:eclipse to
> preserve temporary links.
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