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Posted to issues@maven.apache.org by "Anton Ananich (JIRA)" <ji...@codehaus.org> on 2007/07/11 08:14:13 UTC

[jira] Created: (MNG-3100) Problem during Ant Plugin development

Problem during Ant Plugin development
-------------------------------------

                 Key: MNG-3100
                 URL: http://jira.codehaus.org/browse/MNG-3100
             Project: Maven 2
          Issue Type: Bug
          Components: Documentation: Guides
    Affects Versions: Documentation
            Reporter: Anton Ananich
            Priority: Critical


I'm investigating this manual about Developing Ant Plugins for Maven 2.x:
http://maven.apache.org/guides/plugin/guide-ant-plugin-development.html

I try to create the easiest HelloWorld plugin. As described in this manual:
1) I create Ant script
2) I create mojo
3) I create pom
4) I build it and install (successfully)
And than I try to run it:

c:\> mvn org.myproject.plugins:hello-plugin:hello

Here is what I got:

[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] null
[INFO] ------------------------------------------------------------------------
[INFO] Trace
java.lang.NullPointerException
       at org.apache.maven.plugin.descriptor.PluginDescriptor.getMojo(PluginDescriptor.java:262)
       at org.apache.maven.lifecycle.DefaultLifecycleExecutor.getMojoDescriptor(DefaultLifecycleExecutor.java:1529)
       at org.apache.maven.lifecycle.DefaultLifecycleExecutor.segmentTaskListByAggregationNeeds(DefaultLifecycleExecutor.java:386)
       at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:138)
       at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:334)
       at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:125)
       at org.apache.maven.cli.MavenCli.main(MavenCli.java:272)
       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: < 1 second
[INFO] Finished at: Tue Jul 10 20:02:10 EEST 2007
[INFO] Final Memory: 1M/2M
[INFO] ------------------------------------------------------------------------



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[jira] Closed: (MPLUGIN-41) Problem during Ant Plugin development

Posted by "Vincent Siveton (JIRA)" <ji...@codehaus.org>.

     [ http://jira.codehaus.org/browse/MPLUGIN-41?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vincent Siveton closed MPLUGIN-41.
----------------------------------

      Assignee: Vincent Siveton
    Resolution: Cannot Reproduce

Cannot reproduce on trunk

> Problem during Ant Plugin development
> -------------------------------------
>
>                 Key: MPLUGIN-41
>                 URL: http://jira.codehaus.org/browse/MPLUGIN-41
>             Project: Maven 2.x Plugin Tools
>          Issue Type: Bug
>    Affects Versions: 2.3
>            Reporter: Anton Ananich
>            Assignee: Vincent Siveton
>            Priority: Critical
>
> I'm investigating this manual about Developing Ant Plugins for Maven 2.x:
> http://maven.apache.org/guides/plugin/guide-ant-plugin-development.html
> I try to create the easiest HelloWorld plugin. As described in this manual:
> 1) I create Ant script
> 2) I create mojo
> 3) I create pom
> 4) I build it and install (successfully)
> And than I try to run it:
> c:\> mvn org.myproject.plugins:hello-plugin:hello
> Here is what I got:
> [INFO] Scanning for projects...
> [INFO] ------------------------------------------------------------------------
> [ERROR] FATAL ERROR
> [INFO] ------------------------------------------------------------------------
> [INFO] null
> [INFO] ------------------------------------------------------------------------
> [INFO] Trace
> java.lang.NullPointerException
>        at org.apache.maven.plugin.descriptor.PluginDescriptor.getMojo(PluginDescriptor.java:262)
>        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.getMojoDescriptor(DefaultLifecycleExecutor.java:1529)
>        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.segmentTaskListByAggregationNeeds(DefaultLifecycleExecutor.java:386)
>        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:138)
>        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:334)
>        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:125)
>        at org.apache.maven.cli.MavenCli.main(MavenCli.java:272)
>        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: < 1 second
> [INFO] Finished at: Tue Jul 10 20:02:10 EEST 2007
> [INFO] Final Memory: 1M/2M
> [INFO] ------------------------------------------------------------------------

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[jira] Moved: (MPLUGIN-41) Problem during Ant Plugin development

Posted by "Brett Porter (JIRA)" <ji...@codehaus.org>.

     [ http://jira.codehaus.org/browse/MPLUGIN-41?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Brett Porter moved MNG-3100 to MPLUGIN-41:
------------------------------------------

    Affects Version/s:     (was: Documentation Deficit)
                       2.3
          Component/s:     (was: Documentation: Guides)
                  Key: MPLUGIN-41  (was: MNG-3100)
              Project: Maven 2.x Plugin Plugin  (was: Maven 2)

> Problem during Ant Plugin development
> -------------------------------------
>
>                 Key: MPLUGIN-41
>                 URL: http://jira.codehaus.org/browse/MPLUGIN-41
>             Project: Maven 2.x Plugin Tools
>          Issue Type: Bug
>    Affects Versions: 2.3
>            Reporter: Anton Ananich
>            Priority: Critical
>
> I'm investigating this manual about Developing Ant Plugins for Maven 2.x:
> http://maven.apache.org/guides/plugin/guide-ant-plugin-development.html
> I try to create the easiest HelloWorld plugin. As described in this manual:
> 1) I create Ant script
> 2) I create mojo
> 3) I create pom
> 4) I build it and install (successfully)
> And than I try to run it:
> c:\> mvn org.myproject.plugins:hello-plugin:hello
> Here is what I got:
> [INFO] Scanning for projects...
> [INFO] ------------------------------------------------------------------------
> [ERROR] FATAL ERROR
> [INFO] ------------------------------------------------------------------------
> [INFO] null
> [INFO] ------------------------------------------------------------------------
> [INFO] Trace
> java.lang.NullPointerException
>        at org.apache.maven.plugin.descriptor.PluginDescriptor.getMojo(PluginDescriptor.java:262)
>        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.getMojoDescriptor(DefaultLifecycleExecutor.java:1529)
>        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.segmentTaskListByAggregationNeeds(DefaultLifecycleExecutor.java:386)
>        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:138)
>        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:334)
>        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:125)
>        at org.apache.maven.cli.MavenCli.main(MavenCli.java:272)
>        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: < 1 second
> [INFO] Finished at: Tue Jul 10 20:02:10 EEST 2007
> [INFO] Final Memory: 1M/2M
> [INFO] ------------------------------------------------------------------------

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[jira] Commented: (MNG-3100) Problem during Ant Plugin development

Posted by "Marat Radchenko (JIRA)" <ji...@codehaus.org>.

    [ http://jira.codehaus.org/browse/MNG-3100?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_104123 ] 

Marat Radchenko commented on MNG-3100:
--------------------------------------

I got the same exception for java plugin without @goal annotation.

> Problem during Ant Plugin development
> -------------------------------------
>
>                 Key: MNG-3100
>                 URL: http://jira.codehaus.org/browse/MNG-3100
>             Project: Maven 2
>          Issue Type: Bug
>          Components: Documentation: Guides
>    Affects Versions: Documentation
>            Reporter: Anton Ananich
>            Priority: Critical
>
> I'm investigating this manual about Developing Ant Plugins for Maven 2.x:
> http://maven.apache.org/guides/plugin/guide-ant-plugin-development.html
> I try to create the easiest HelloWorld plugin. As described in this manual:
> 1) I create Ant script
> 2) I create mojo
> 3) I create pom
> 4) I build it and install (successfully)
> And than I try to run it:
> c:\> mvn org.myproject.plugins:hello-plugin:hello
> Here is what I got:
> [INFO] Scanning for projects...
> [INFO] ------------------------------------------------------------------------
> [ERROR] FATAL ERROR
> [INFO] ------------------------------------------------------------------------
> [INFO] null
> [INFO] ------------------------------------------------------------------------
> [INFO] Trace
> java.lang.NullPointerException
>        at org.apache.maven.plugin.descriptor.PluginDescriptor.getMojo(PluginDescriptor.java:262)
>        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.getMojoDescriptor(DefaultLifecycleExecutor.java:1529)
>        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.segmentTaskListByAggregationNeeds(DefaultLifecycleExecutor.java:386)
>        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:138)
>        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:334)
>        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:125)
>        at org.apache.maven.cli.MavenCli.main(MavenCli.java:272)
>        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: < 1 second
> [INFO] Finished at: Tue Jul 10 20:02:10 EEST 2007
> [INFO] Final Memory: 1M/2M
> [INFO] ------------------------------------------------------------------------

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[jira] Commented: (MNG-3100) Problem during Ant Plugin development

Posted by "Slawomir Węgrzyn (JIRA)" <ji...@codehaus.org>.

    [ http://jira.codehaus.org/browse/MNG-3100?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_103104 ] 

Slawomir W&#281;grzyn commented on MNG-3100:
--------------------------------------------

I've found why the example didn't work. I put both scripts ('basename'.build.xml & 'basename'.mojos.xml) in project's main directory not in src/main/scripts as was suggested. After moving files to mentioned location all works well.

> Problem during Ant Plugin development
> -------------------------------------
>
>                 Key: MNG-3100
>                 URL: http://jira.codehaus.org/browse/MNG-3100
>             Project: Maven 2
>          Issue Type: Bug
>          Components: Documentation: Guides
>    Affects Versions: Documentation
>            Reporter: Anton Ananich
>            Priority: Critical
>
> I'm investigating this manual about Developing Ant Plugins for Maven 2.x:
> http://maven.apache.org/guides/plugin/guide-ant-plugin-development.html
> I try to create the easiest HelloWorld plugin. As described in this manual:
> 1) I create Ant script
> 2) I create mojo
> 3) I create pom
> 4) I build it and install (successfully)
> And than I try to run it:
> c:\> mvn org.myproject.plugins:hello-plugin:hello
> Here is what I got:
> [INFO] Scanning for projects...
> [INFO] ------------------------------------------------------------------------
> [ERROR] FATAL ERROR
> [INFO] ------------------------------------------------------------------------
> [INFO] null
> [INFO] ------------------------------------------------------------------------
> [INFO] Trace
> java.lang.NullPointerException
>        at org.apache.maven.plugin.descriptor.PluginDescriptor.getMojo(PluginDescriptor.java:262)
>        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.getMojoDescriptor(DefaultLifecycleExecutor.java:1529)
>        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.segmentTaskListByAggregationNeeds(DefaultLifecycleExecutor.java:386)
>        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:138)
>        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:334)
>        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:125)
>        at org.apache.maven.cli.MavenCli.main(MavenCli.java:272)
>        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: < 1 second
> [INFO] Finished at: Tue Jul 10 20:02:10 EEST 2007
> [INFO] Final Memory: 1M/2M
> [INFO] ------------------------------------------------------------------------

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[jira] Commented: (MNG-3100) Problem during Ant Plugin development

Posted by "Slawomir Węgrzyn (JIRA)" <ji...@codehaus.org>.

    [ http://jira.codehaus.org/browse/MNG-3100?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_103083 ] 

Slawomir W&#281;grzyn commented on MNG-3100:
--------------------------------------------

I've also experienced this problem. Could anyone provide possible solution?

> Problem during Ant Plugin development
> -------------------------------------
>
>                 Key: MNG-3100
>                 URL: http://jira.codehaus.org/browse/MNG-3100
>             Project: Maven 2
>          Issue Type: Bug
>          Components: Documentation: Guides
>    Affects Versions: Documentation
>            Reporter: Anton Ananich
>            Priority: Critical
>
> I'm investigating this manual about Developing Ant Plugins for Maven 2.x:
> http://maven.apache.org/guides/plugin/guide-ant-plugin-development.html
> I try to create the easiest HelloWorld plugin. As described in this manual:
> 1) I create Ant script
> 2) I create mojo
> 3) I create pom
> 4) I build it and install (successfully)
> And than I try to run it:
> c:\> mvn org.myproject.plugins:hello-plugin:hello
> Here is what I got:
> [INFO] Scanning for projects...
> [INFO] ------------------------------------------------------------------------
> [ERROR] FATAL ERROR
> [INFO] ------------------------------------------------------------------------
> [INFO] null
> [INFO] ------------------------------------------------------------------------
> [INFO] Trace
> java.lang.NullPointerException
>        at org.apache.maven.plugin.descriptor.PluginDescriptor.getMojo(PluginDescriptor.java:262)
>        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.getMojoDescriptor(DefaultLifecycleExecutor.java:1529)
>        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.segmentTaskListByAggregationNeeds(DefaultLifecycleExecutor.java:386)
>        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:138)
>        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:334)
>        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:125)
>        at org.apache.maven.cli.MavenCli.main(MavenCli.java:272)
>        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: < 1 second
> [INFO] Finished at: Tue Jul 10 20:02:10 EEST 2007
> [INFO] Final Memory: 1M/2M
> [INFO] ------------------------------------------------------------------------

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