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http://jira.codehaus.org/browse/MNG-3473?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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John Casey reopened MNG-3473:
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The issue with the plugin plugin isn't the LinkedHashSet...it's incorrect
ordering of dependencies in the plugin's POM, and a change in the
artifact-resolution code that uses an ordered set now where it didn't used to.
I've verified that the ordering of artifacts resolved for the same plugin POM
is different between 2.0.8 and the 2.0.9 code, where the 2.0.9 resolution order
is actually correct...the plugin POM specifies dependencies on
maven-reporting-impl 2.0.4 and doxia-site-renderer 1.0-alpha-10 IN THAT ORDER.
This means that it resolves:
# maven-reporting-impl 2.0.4 -> doxia-core 1.0-alpha-7
# doxia-site-renderer 1.0-alpha-10 -> doxia-core 1.0-alpha-10
and, since it sees -alpha-7 of doxia-core FIRST (it's at the same transitivity
level as the other doxia-core dependency), -alpha-7 wins. This is correct
according to the rules implemented in the ArtifactCollector. Previously, I
think it was just dumb luck that it worked using a bad ordering algorithm (or,
more precisely, no ordering algorithm).
> site generation with 2.0.9 and plugin:report is broken
> ------------------------------------------------------
>
> Key: MNG-3473
> URL: http://jira.codehaus.org/browse/MNG-3473
> Project: Maven 2
> Issue Type: Bug
> Components: Plugins and Lifecycle
> Affects Versions: 2.0.9
> Reporter: Brian Fox
> Assignee: John Casey
> Fix For: 2.0.9
>
>
> Generating a site that works in 2.0.8 breaks in 2.0.9 with an exception:
> Caused by: java.lang.NoClassDefFoundError:
> org/apache/maven/doxia/module/site/manager/SiteModuleNotFoundException
> There is already a committed IT for this. It may be related to issues with
> MPLUGIN-104, however in this case the 2.4 version of the plugin does work in
> 2.0.8 so we need to investigate it in the core as well.
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