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https://jira.codehaus.org/browse/MNG-4001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=303254#comment-303254
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stephen hartley commented on MNG-4001:
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+1 request to fix in 2.2.x, the hudson sonar plugin uses maven 2.2.1 which
means sonar:sonar fails in my CI environment
> Unable to resolve Dashboard mojo from Central
> ---------------------------------------------
>
> Key: MNG-4001
> URL: https://jira.codehaus.org/browse/MNG-4001
> Project: Maven 2 & 3
> Issue Type: Bug
> Components: Sites & Reporting
> Affects Versions: 2.0.9
> Environment: Windows, JDK 1.6
> Reporter: Anthony Whitford
> Fix For: Issues to be reviewed for 3.x
>
> Attachments: dashbug.zip
>
>
> I have a simple test project that declares the dashboard-maven-plugin (see
> http://mojo.codehaus.org/dashboard-maven-plugin/usage.html ).
> Note that the usage does explicitly state that the Codehaus repository must
> be specified as a plugin repository...
> However, according to:
> http://maven.apache.org/guides/introduction/introduction-to-plugin-prefix-mapping.html
> I'm pretty sure that Maven should be able to resolve the
> dashboard-maven-plugin from the central repo.
> I validated that the [dashboard-maven-plugin residing in
> central|http://repo1.maven.org/maven2/org/codehaus/mojo/dashboard-maven-plugin/1.0.0-beta-1/]
> is indeed the same artifact as that which lives at the [codehaus
> repository|http://repository.codehaus.org/org/codehaus/mojo/dashboard-maven-plugin/1.0.0-beta-1/].
> But as you can see from my attached test case, the codehaus mojo is NOT being
> resolved without the special plugin repository defined. When running
> {noformat}mvn dashboard:dashboard{noformat}, I get the following error
> message:
> {noformat}
> [INFO] Scanning for projects...
> [INFO] Searching repository for plugin with prefix: 'dashboard'.
> [INFO]
> ------------------------------------------------------------------------
> [ERROR] BUILD ERROR
> [INFO]
> ------------------------------------------------------------------------
> [INFO] The plugin 'org.apache.maven.plugins:maven-dashboard-plugin' does not
> exist or no valid version could be found
> [INFO]
> ------------------------------------------------------------------------
> [INFO] For more information, run Maven with the -e switch
> [INFO]
> ------------------------------------------------------------------------
> [INFO] Total time: < 1 second
> [INFO] Finished at: Sat Jan 24 12:40:55 PST 2009
> [INFO] Final Memory: 1M/254M
> [INFO]
> ------------------------------------------------------------------------{noformat}
> If you edit the pom.xml to uncomment out the plugin repository declaration
> for codehaus, it works as one would expect.
> My understanding is that the only reason why the Dashboard Usage mentions
> their plugin repository is because the artifact was not available on the
> central repository -- but it certainly is today.
> I also thought that perhaps the maven-metadata.xml might be incorrect
> (perhaps the dashboard plugin prefix is missing or different). I checked:
> * http://repo1.maven.org/maven2/org/codehaus/mojo/maven-metadata.xml
> * http://repository.codehaus.org/org/codehaus/mojo/maven-metadata.xml
> and they both look OK to me... I clearly see:{code:xml}
> <plugin>
> <name>Maven Dashboard Report Plugin</name>
> <prefix>dashboard</prefix>
> <artifactId>dashboard-maven-plugin</artifactId>
> </plugin>
> {code}
> And I don't see any plugin with a dashboard prefix specified as an Apache
> Maven Plugin here:
> * http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-metadata.xml
> If I explicitly specify the dashboard plugin like: {noformat}mvn
> org.codehaus.mojo:dashboard-maven-plugin:dashboard{noformat}
> that works...
> Overall, I am recording a bug because the
> [documentation|http://maven.apache.org/guides/introduction/introduction-to-plugin-prefix-mapping.html]
> states:{quote}
> Maven will always search the following groupId's after searching any plugin
> groups specified in the user's settings:
> * org.apache.maven.plugins
> * org.codehaus.mojo
> {quote}
> I don't see this being done.
> Finally, I even tried adding a {{pluginGroups}} to my
> {{settings.xml}}:{code:xml}
> <pluginGroups>
> <pluginGroup>org.codehaus.mojo</pluginGroup>
> </pluginGroups>
> {code}
> But that did not work either...
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