But why is this an NPE from this plugin. It should show a proper error
message.

java.lang.NullPointerException
at org.wso2.maven.p2.FeatureArtifact.resolveVersion(FeatureArtifact.java:91)

On Thu, Jul 5, 2012 at 5:24 PM, Dileepa Jayakody <[email protected]> wrote:

> Hi Azeez,
>
> I suspect this happens because of failing to resolve *
> org.wso2.carbon.ndatasource.feature* featureArtifact in the repo-gen
> phase.
> I tried building ndatasource feature, but failed due to below;  Has
> someone built ndatasource feature successfully?
>
> [INFO] WSO2 Carbon - New Datasource Feature Aggregator Module  SUCCESS
> [1.031s]
> [INFO] WSO2 Carbon - New Datasource Management UI Feature  FAILURE [0.331s]
> [INFO] WSO2 Carbon - New Datasource Management Feature ... SKIPPED
>  [INFO]
> ------------------------------------------------------------------------
> [INFO] BUILD FAILURE
> [INFO]
> ------------------------------------------------------------------------
> [INFO] Total time: 2.613s
> [INFO] Finished at: Thu Jul 05 17:17:24 IST 2012
> [INFO] Final Memory: 6M/490M
> [INFO]
> ------------------------------------------------------------------------
> [ERROR] Failed to execute goal on project
> org.wso2.carbon.ndatasource.ui.feature: Could not resolve dependencies for
> project
> org.wso2.carbon:org.wso2.carbon.ndatasource.ui.feature:pom:4.0.0-SNAPSHOT:
> Failure to find
> org.wso2.carbon:org.wso2.carbon.ndatasource.ui:jar:4.0.0-SNAPSHOT in
> http://maven.wso2.org/nexus/content/groups/wso2-public/ was cached in the
> local repository, resolution will not be reattempted until the update
> interval of wso2-nexus has elapsed or updates are forced -> [Help 1]
>
> Thanks,
> Dileepa
> On Thu, Jul 5, 2012 at 4:34 PM, Afkham Azeez <[email protected]> wrote:
>
>> [INFO] Scanning for projects...
>> [INFO]
>>
>> [INFO]
>> ------------------------------------------------------------------------
>> [INFO] Building WSO2 Carbon - Feature Repository 4.0.0-SNAPSHOT
>> [INFO]
>> ------------------------------------------------------------------------
>> [INFO]
>> [INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @
>> wso2carbon-feature-repository ---
>> [INFO]
>> [INFO] --- incremental-build-plugin:1.3:incremental-build (default) @
>> wso2carbon-feature-repository ---
>> [INFO] Verifying module descriptor ...
>> [INFO] Pom descriptor modification detected.
>> [INFO] Deleting
>> /Users/azeez/projects/wso2/org/carbon/platform/trunk/features/repository/target
>> [INFO]
>> [INFO] --- carbon-p2-plugin:1.5-SNAPSHOT:p2-repo-gen
>> (2-p2-repo-generation) @ wso2carbon-feature-repository ---
>> [ERROR]
>> java.lang.NullPointerException
>> at
>> org.wso2.maven.p2.FeatureArtifact.resolveVersion(FeatureArtifact.java:91)
>> at
>> org.wso2.maven.p2.RepositoryGenMojo.getProcessedFeatureArtifacts(RepositoryGenMojo.java:317)
>>  at
>> org.wso2.maven.p2.RepositoryGenMojo.createRepo(RepositoryGenMojo.java:197)
>> at org.wso2.maven.p2.RepositoryGenMojo.execute(RepositoryGenMojo.java:191)
>>  at
>> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
>> at
>> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
>>  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:319)
>> 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:39)
>> at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>>  at java.lang.reflect.Method.invoke(Method.java:597)
>> 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)
>> [INFO]
>> ------------------------------------------------------------------------
>> [INFO] BUILD FAILURE
>> [INFO]
>> ------------------------------------------------------------------------
>> [INFO] Total time: 1:13.402s
>> [INFO] Finished at: Thu Jul 05 16:31:44 IST 2012
>> [INFO] Final Memory: 6M/81M
>> [INFO]
>> ------------------------------------------------------------------------
>> [ERROR] Failed to execute goal
>> org.wso2.maven:carbon-p2-plugin:1.5-SNAPSHOT:p2-repo-gen
>> (2-p2-repo-generation) on project wso2carbon-feature-repository: null:
>> MojoExecutionException: NullPointerException -> [Help 1]
>> [ERROR]
>> [ERROR] To see the full stack trace of the errors, re-run Maven with the
>> -e switch.
>> [ERROR] Re-run Maven using the -X switch to enable full debug logging.
>> [ERROR]
>> [ERROR] For more information about the errors and possible solutions,
>> please read the following articles:
>> [ERROR] [Help 1]
>> http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
>>
>>
>> --
>> *Afkham Azeez*
>> Director of Architecture; WSO2, Inc.; http://wso2.com
>> Member; Apache Software Foundation; http://www.apache.org/
>> * <http://www.apache.org/>**
>> email: **[email protected]* <[email protected]>* cell: +94 77 3320919
>> blog: **http://blog.afkham.org* <http://blog.afkham.org>*
>> twitter: **http://twitter.com/afkham_azeez*<http://twitter.com/afkham_azeez>
>> *
>> linked-in: **http://lk.linkedin.com/in/afkhamazeez*
>> *
>> *
>> *Lean . Enterprise . Middleware*
>>
>>
>> _______________________________________________
>> Dev mailing list
>> [email protected]
>> http://wso2.org/cgi-bin/mailman/listinfo/dev
>>
>>
>
>
> --
> Dileepa Jayakody,
> Software Engineer, WSO2 Inc.
>
> Lean . Enterprise . Middleware
>
> Mobile : +94777-857616
>
>


-- 
*Afkham Azeez*
Director of Architecture; WSO2, Inc.; http://wso2.com
Member; Apache Software Foundation; http://www.apache.org/
* <http://www.apache.org/>**
email: **[email protected]* <[email protected]>* cell: +94 77 3320919
blog: **http://blog.afkham.org* <http://blog.afkham.org>*
twitter: **http://twitter.com/afkham_azeez*<http://twitter.com/afkham_azeez>
*
linked-in: **http://lk.linkedin.com/in/afkhamazeez*
*
*
*Lean . Enterprise . Middleware*
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