If your pom contains <packaging>maven-plugin</packaging>.
Just use : mvn install

- Olivier

-----Message d'origine-----
De : berndq [mailto:[EMAIL PROTECTED] 
Envoyé : vendredi 9 décembre 2005 13:59
À : [email protected]
Objet : [m2] problems with self developed plugin


Hi,

how do I get a self developed plugin to work?

- I followed 
http://maven.apache.org/guides/plugin/guide-java-plugin-development.html

- made a jar

- used "mvn install:install-file ..." to add the jar/plugin to the local

repository. It says "Installing ...", "BUILD SUCESSFULL"

- tried to run the plugin with the fully qualified goal 
groupID:artifactID:version:goal (of course subtitued with the actual
values)

but I only get an NPE:

---------------------------------------------------------------
D:\tmp>mvn -X -e <groupID>:ClassNamePrinterPlugin:0.8:PrintClassNames
+ Error stacktraces are turned on.
[DEBUG] Building Maven user-level plugin registry from: 
'C:\xxx\.m2\plugin-registry.xml'
[DEBUG] Building Maven global-level plugin registry from: 
'd:\PROGRA~1\APACHE~1.0\bin\..\conf\plugin-registry.xml'
[INFO] Scanning for projects...
[INFO] 
------------------------------------------------------------------------
----
[ERROR] FATAL ERROR
[INFO] 
------------------------------------------------------------------------
----
[INFO] null
[INFO] 
------------------------------------------------------------------------
----
[DEBUG] Trace
java.lang.NullPointerException
         at 
org.apache.maven.plugin.DefaultPluginManager.addPlugin(DefaultPluginMana
ger.java:292)
         at 
org.apache.maven.plugin.DefaultPluginManager.verifyVersionedPlugin(Defau
ltPluginManager.j
ava:198)
         at 
org.apache.maven.plugin.DefaultPluginManager.verifyPlugin(DefaultPluginM
anager.java:163)
         at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.verifyPlugin(Default
LifecycleExecutor
.java:1095)
         at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.getMojoDescriptor(De
faultLifecycleExe
cutor.java:1356)
         at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.segmentTaskListByAgg
regationNeeds(Def
aultLifecycleExecutor.java:376)
         at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifec
ycleExecutor.java
:132)
         at
org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:316)
         at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:113)
         at org.apache.maven.cli.MavenCli.main(MavenCli.java:249)
         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
         at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav
a:39)
         at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Impl.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: Fri Dec 09 13:47:16 CET 2005
[INFO] Final Memory: 1M/2M
[INFO] 
------------------------------------------------------------------------
----

D:\tmp>
---------------------------------------------------------------

How can I get more debug info?
What should I look for?

Bernd




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