[ http://jira.codehaus.org/browse/MNG-2091?page=all ]
John Casey updated MNG-2091:
----------------------------
Fix Version: 2.0.5
> NPE when including middlegen-hibernate-plugin
> ---------------------------------------------
>
> Key: MNG-2091
> URL: http://jira.codehaus.org/browse/MNG-2091
> Project: Maven 2
> Type: Bug
> Components: Plugin API
> Versions: 2.2
> Environment: SUSE Linux 9.3 on i386; JVM: 1.5.0_04-b05; Kernel:
> 2.6.11.4.20a-11-default
> Reporter: Bernd Adamowicz
> Fix For: 2.0.5
>
>
> As soon as the plugin middlegen-hibernat-plugin is integrated into the POM, a
> NPE is thrown when the plugin is added. This is the stacktrace:
> [EMAIL PROTECTED]:~/THEMEN/ECLIPSE_WORKBENCH/Buttenlauf> mvn compile
> [INFO] Scanning for projects...
> [INFO]
> ----------------------------------------------------------------------------
> [INFO] Building Buttenlauf Auswertung - GVC Criesbach
> [INFO] task-segment: [compile]
> [INFO]
> ----------------------------------------------------------------------------
> [INFO]
> ----------------------------------------------------------------------------
> [ERROR] FATAL ERROR
> [INFO]
> ----------------------------------------------------------------------------
> [INFO] null
> [INFO]
> ----------------------------------------------------------------------------
> [INFO] Trace
> java.lang.NullPointerException
> at
> org.apache.maven.plugin.DefaultPluginManager.addPlugin(DefaultPluginManager.java:295)
> at
> org.apache.maven.plugin.DefaultPluginManager.verifyVersionedPlugin(DefaultPluginManager.java:200)
> at
> org.apache.maven.plugin.DefaultPluginManager.verifyPlugin(DefaultPluginManager.java:165)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.verifyPlugin(DefaultLifecycleExecutor.java:1218)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.bindPluginToLifecycle(DefaultLifecycleExecutor.java:1182)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.constructLifecycleMappings(DefaultLifecycleExecutor.java:950)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:450)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:303)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:270)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:139)
> at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:322)
> at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:115)
> 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: 2 seconds
> [INFO] Finished at: Mon Feb 20 21:04:30 CET 2006
> [INFO] Final Memory: 1M/4M
> [INFO]
> ----------------------------------------------------------------------------
> This is how the Middlegen-part of the POM looks like:
> ....
> <build>
> <plugins>
> <plugin>
> <groupId>middlegen</groupId>
>
> <artifactId>middlegen-hibernate-plugin</artifactId>
> <version>2.1</version>
> </plugin>
> <plugin>
> ....
> I know this issue has been around with Maven 1.x. The cause there was a
> corrupted plugin pom from middlegen. But I wasn't able to reproduce this. I
> couldn't find anything wrong with the pom.
> This problem can be reproduced with Maven 2.0 and on Windows systems, too. So
> I think the problem really is the plugin. I will open an issue on the
> Middlegen page, too and will (hopefully) post a solution here. But maybe
> someone has a workaround to fix this in the meantime.
> Thanks in advance for any help.
> Bernd
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