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From "Brett Porter (JIRA)" <j...@codehaus.org>
Subject [jira] Commented: (MNG-3616) Null Pointer Exception when mirrorOf missing from mirror in settings.xml
Date Mon, 09 Mar 2009 23:40:13 GMT

    [ http://jira.codehaus.org/browse/MNG-3616?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=168660#action_168660
] 

Brett Porter commented on MNG-3616:
-----------------------------------

yes, I'm not sure why it's not working, just that it is not.

> Null Pointer Exception when mirrorOf missing from mirror in settings.xml
> ------------------------------------------------------------------------
>
>                 Key: MNG-3616
>                 URL: http://jira.codehaus.org/browse/MNG-3616
>             Project: Maven 2
>          Issue Type: Bug
>    Affects Versions: 2.0.9
>            Reporter: Frank Adcock
>             Fix For: 2.0.x
>
>
> When attempting to generate any archetype from the mvn archetype:generate command I get
a null pointer exception thrown if I have mirrors defined in my settings.xml file but fail
to have the mirrorOf element set. 
> The stack trace for the archetype generation is:
> Choose a number: (1/2/3/4/5/6/7/8/9/10/11/12/13/14/15/16/17/18/19/20/21/22/23/2
> 4/25/26/27/28/29/30/31/32/33/34/35/36/37/38/39/40/41/42/43/44) 15: : 6
> [INFO] ------------------------------------------------------------------------
> [ERROR] BUILD FAILURE
> [INFO] ------------------------------------------------------------------------
> [INFO] : java.lang.NullPointerException
> null
> [INFO] ------------------------------------------------------------------------
> [INFO] Trace
> org.apache.maven.BuildFailureException
> at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(Defa
> ultLifecycleExecutor.java:579)
> at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandalone
> Goal(DefaultLifecycleExecutor.java:512)
> at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(Defau
> ltLifecycleExecutor.java:482)
> at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHan
> dleFailures(DefaultLifecycleExecutor.java:330)
> at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegmen
> ts(DefaultLifecycleExecutor.java:227)
> at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLi
> fecycleExecutor.java:142)
> at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:336)
> at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:129)
> at org.apache.maven.cli.MavenCli.main(MavenCli.java:287)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
> java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
> sorImpl.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)
> Caused by: org.apache.maven.plugin.MojoFailureException
> at org.apache.maven.archetype.mojos.CreateProjectFromArchetypeMojo.execu
> te(CreateProjectFromArchetypeMojo.java:202)
> at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPlugi
> nManager.java:451)
> at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(Defa
> ultLifecycleExecutor.java:558)
> ... 16 more
> [INFO] ------------------------------------------------------------------------
> [INFO] Total time: 7 seconds
> [INFO] Finished at: Wed May 28 17:49:39 EST 2008
> [INFO] Final Memory: 8M/14M
> [INFO] ------------------------------------------------------------------------
> C:\Documents and Settings\frank\My Documents\Development\Sandbox>mvn -v
> Maven version: 2.0.9
> Java version: 1.5.0_08
> OS name: "windows xp" version: "5.1" arch: "x86" Family: "windows"
> The mirrored settings from the settings.xml file are:
> <mirrors>
> <mirror>
> <id>nexus-central</id>
> <url>http://maven.ho.bushlife.com.au:8081/nexus/content/groups/public</url>
> </mirror>
> </mirrors>
> As a user you receive a null pointer exception because of something missing in the settings.xml
file.
> At the very least you should receive an error message indicating the problem. If you
can have a situation where the mirrorOf setting is optional, then it should not be throwing
a null pointer exception but handling it better.

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