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https://jira.codehaus.org/browse/MWAR-260?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=279045#comment-279045
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Joerg Schaible commented on MWAR-260:
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Why do you need a new packaging type? We do this since years using packaging
type jar and add the war as attached artifact with classifier 'webapp'.
> Patch to provide new war-overlay type
> -------------------------------------
>
> Key: MWAR-260
> URL: https://jira.codehaus.org/browse/MWAR-260
> Project: Maven 2.x WAR Plugin
> Issue Type: Improvement
> Components: overlay
> Affects Versions: 2.1.1
> Reporter: Alex Clarke
>
> There are a number of bugs raised around support for WAR overlays:
> MWAR-73 - war overlay mechanism does not work for classes
> MWAR-253 - Inherit dependencies from a WAR type dependency when it is
> overlayed.
> MWAR-194 - Warn when inconsistent jar versions are detected during overlay
> MWAR-220 - dependencyManagement && overlay + transitive dependency = multiple
> versions of same dependency in WEB-INF/lib
> MWAR-33 - jars with differents versions can be in WEB-INF/lib with war as
> dependencies
> Most of these relate to the fact that overlays are not treated as normal
> maven dependencies.
> The code in https://github.com/SciSysUK/maven-plugins/tree/waroverlay
> introduces a new packaging type of "war-overlay", that works in the following
> way:
> - The primary artifact is a jar containing the classes from the overlay
> - Another artifact is attached containing the web content
> - A dependency on a war-overlay will automatically pull both artifacts
> into the packaged war
> To use the new type all you need to do is declare
> <extensions>true</extensions> on the maven-war-plugin. There is an
> integration test example here:
> https://github.com/SciSysUK/maven-plugins/tree/waroverlay/maven-war-plugin/src/it/war-overlay.
>
> If someone could review the code I could create a patch and update the site
> documentation.
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