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Re: [tycho-user] NPE on mvn release:perform 
Is there an alternative to maven-release-plugin, you mean? This is what
we do for m2e [1]. Ain't perfect but easy enough to make the lack of
maven-release-plugin support for tycho project a non-issue for me.
[1] https://docs.sonatype.org/display/M2ECLIPSE/Staging+and+releasing+new+M2Eclipse+release 

--
Regards,
Igor

On 12-05-22 1:40 PM, Nadav Hoze wrote:

Igor Is there an alternative?

On May 22, 2012 8:34 PM, "Igor Fedorenko" <igor@xxxxxxxxxxxxxx
<mailto:igor@xxxxxxxxxxxxxx>> wrote:

    Open a bug report with a sample project and steps to reproduce the NPE
    and we'll have a look.

    As for maven-release-plugin... I am not against using
    maven-release-plugin for Tycho projects, but it does not work and there
    is not much Tycho developers can do to make it work.

    --
    Regards,
    Igor

    On 12-05-22 12:46 PM, Craig Foote wrote:

        I don't really see a choice. We all need to release and it's a big
        gaping hole with tycho in my opinion. Judging by the number of
        questions
        on it it may not be just my opinion. At very least a NPE
        shouldn't be
        thrown on the "perform -clean", which is all we're doing. I
        think that's
        just checking out a tag and running clean so I'm not sure what
        would be
        null even. NPE sounds like a bug to me - a null check and meaningful
        exception would be better in any such case.

        Craig

        On Tue, May 22, 2012 at 11:19 AM, Igor Fedorenko
        <ifedorenko@xxxxxxxxxxxx <mailto:ifedorenko@xxxxxxxxxxxx>
        <mailto:ifedorenko@sonatype.__com
        <mailto:ifedorenko@xxxxxxxxxxxx>>> wrote:

            maven release plugin is incompatible with tycho, don't use
        it with tycho
            projects.

            --
            Regards,
            Igor


            On 12-05-22 11:16 AM, Craig Foote wrote:

                I understand mvn release is not supported by tycho but a
                NullPointerException is very unhelpful. Can this be
        fixed or at
                least
                explained please?

                [INFO] [ERROR] Internal error:
        java.lang.NullPointerException ->
                [Help 1]
                [INFO] org.apache.maven.____InternalErrorException:
        Internal error:
                java.lang.NullPointerException
                [INFO]     at

          org.apache.maven.DefaultMaven.____execute(DefaultMaven.java:__168)
                [INFO]     at
                org.apache.maven.cli.MavenCli.____execute(MavenCli.java:534)
                [INFO]     at
                org.apache.maven.cli.MavenCli.____doMain(MavenCli.java:196)
                [INFO]     at
                org.apache.maven.cli.MavenCli.____main(MavenCli.java:141)
                [INFO]     at

          sun.reflect.____NativeMethodAccessorImpl.____invoke0(Native
        Method)
                [INFO]     at

          sun.reflect.____NativeMethodAccessorImpl.____invoke(____NativeMethodAccessorImpl.java:____39)
                [INFO]     at

          sun.reflect.____DelegatingMethodAccessorImpl.____invoke(____DelegatingMethodAccessorImpl.____java:25)
                [INFO]     at
        java.lang.reflect.Method.____invoke(Method.java:597)
                [INFO]     at

          org.codehaus.plexus.____classworlds.launcher.Launcher.____launchEnhanced(Launcher.__java:__290)
                [INFO]     at

          org.codehaus.plexus.____classworlds.launcher.Launcher.____launch(Launcher.java:230)
                [INFO]     at

          org.codehaus.plexus.____classworlds.launcher.Launcher.____mainWithExitCode(Launcher.____java:409)
                [INFO]     at

          org.codehaus.plexus.____classworlds.launcher.Launcher.____main(Launcher.java:352)
                [INFO] Caused by: java.lang.NullPointerException
                [INFO]     at

          org.apache.maven.plugin.____DefaultPluginDescriptorCache$____CacheKey.<init>(____DefaultPluginDescriptorCache.____java:165)
                [INFO]     at

          org.apache.maven.plugin.____DefaultPluginDescriptorCache.____createKey(____DefaultPluginDescriptorCache.____java:62)
                [INFO]     at

          org.apache.maven.plugin.____internal.____DefaultMavenPluginManager.____getPluginDescriptor(____DefaultMavenPluginManager.____java:136)
                [INFO]     at

          org.eclipse.tycho.core.maven.____utils.PluginRealmHelper.____execute(PluginRealmHelper.____java:86)
                [INFO]     at

          org.eclipse.tycho.p2.resolver.____P2TargetPlatformResolver.____getDependencyMetadata(____P2TargetPlatformResolver.java:____158)
                [INFO]     at

          org.eclipse.tycho.p2.resolver.____P2TargetPlatformResolver.____setupProjects(____P2TargetPlatformResolver.java:____140)
                [INFO]     at

          org.eclipse.tycho.core.____resolver.____DefaultTychoDependencyResolver____.setupProject(____DefaultTychoDependencyResolver____.java:76)
                [INFO]     at

          org.eclipse.tycho.core.maven.______TychoMavenLifecycleParticipant____.afterProjectsRead(____TychoMavenLifecycleParticipant____.java:56)
                [INFO]     at

          org.apache.maven.DefaultMaven.____doExecute(DefaultMaven.java:____273)
                [INFO]     at

          org.apache.maven.DefaultMaven.____execute(DefaultMaven.java:__156)
                [INFO]     ... 11 more
                [INFO] [ERROR]
                [INFO] [ERROR] To see the full stack trace of the
        errors, re-run
                Maven
                with the -e switch.
                [INFO] [ERROR] Re-run Maven using the -X switch to
        enable full debug
                logging.
                [INFO] [ERROR]
                [INFO] [ERROR] For more information about the errors and
        possible
                solutions, please read the following articles:
                [INFO] [ERROR] [Help 1]
        http://cwiki.apache.org/____confluence/display/MAVEN/____InternalErrorException
        <http://cwiki.apache.org/__confluence/display/MAVEN/__InternalErrorException>
        <http://cwiki.apache.org/__confluence/display/MAVEN/__InternalErrorException
        <http://cwiki.apache.org/confluence/display/MAVEN/InternalErrorException>>


                Craig Foote


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