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http://jira.codehaus.org/browse/MNG-5019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=257645#action_257645
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Olivier Lamy commented on MNG-5019:
-----------------------------------
Thanks !
> [regression] String-based component lookups performed by report mojos fail
> with ClassCastException
> --------------------------------------------------------------------------------------------------
>
> Key: MNG-5019
> URL: http://jira.codehaus.org/browse/MNG-5019
> Project: Maven 2 & 3
> Issue Type: Bug
> Components: Class Loading
> Affects Versions: 3.0.2
> Reporter: Benjamin Bentmann
> Assignee: Benjamin Bentmann
> Fix For: 3.0.3
>
>
> From the IT MSITE-506 of the Site Plugin:
> {noformat}
> Caused by: java.lang.ClassCastException:
> org.codehaus.plexus.archiver.zip.ZipUnArchiver$__plexus6
> at
> org.codehaus.plexus.archiver.manager.DefaultArchiverManager.getUnArchiver(DefaultArchiverManager.java:76)
> at
> org.apache.maven.plugin.javadoc.resolver.ResourceResolver.resolveAndUnpack(ResourceResolver.java:357)
> at
> org.apache.maven.plugin.javadoc.resolver.ResourceResolver.resolveFromArtifacts(ResourceResolver.java:302)
> at
> org.apache.maven.plugin.javadoc.resolver.ResourceResolver.resolveDependencySourcePaths(ResourceResolver.java:143)
> at
> org.apache.maven.plugin.javadoc.AbstractJavadocMojo.getDependencySourcePaths(AbstractJavadocMojo.java:2169)
> at
> org.apache.maven.plugin.javadoc.AbstractJavadocMojo.getSourcePaths(AbstractJavadocMojo.java:2058)
> at
> org.apache.maven.plugin.javadoc.JavadocReport.canGenerateReport(JavadocReport.java:213)
> at
> org.apache.maven.plugins.site.DefaultMavenReportExecutor.canGenerateReport(DefaultMavenReportExecutor.java:299)
> at
> org.apache.maven.plugins.site.DefaultMavenReportExecutor.buildMavenReports(DefaultMavenReportExecutor.java:278)
>
> {noformat}
> Cause is the following container scenario:
> {noformat}
> maven-realm
> site-plugin-realm <-- plexus lookup realm
> javadoc-plugin-realm <-- TCCL
> {noformat}
> where both the Site Plugin and the Javadoc Plugin depend on plexus-archiver.
> The way the container resolves string-based roles is to first check the
> lookup realm, then the TCCL for the interface/component. In the setup above,
> this ends up using components from the Site Plugin for the execution of the
> Javadoc Plugin, boom.
> After talking with Stuart, the fix seems to be as simple as just nullifying
> the lookup realm, thereby consequently using the TCCL for the lookups.
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