[jira] (MSHADE-91) Allow using external Shader implementation

["Scott Carey (JIRA)" <ji...@codehaus.org>]

    [ https://jira.codehaus.org/browse/MSHADE-91?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=324817#comment-324817 ] 

Scott Carey commented on MSHADE-91:
-----------------------------------

How does this solve the ask:
{quote}
It would therefore be useful if the plugin (specifically the DefaultShader class) provided the option of failing the build if any duplicates are detected. This would be particularly useful in a continuous integration environment where there's no human operator to check the console output for warnings.
{quote}

How do I configure the shade plugin to fail when there is a duplicate class detected while shading? (I don't see anything on http://maven.apache.org/plugins/maven-shade-plugin/shade-mojo.html)

If there are duplicate classes, a java application on android will fail to run.  The VM on Android is very strict.
                
> Allow using external Shader implementation
> ------------------------------------------
>
>                 Key: MSHADE-91
>                 URL: https://jira.codehaus.org/browse/MSHADE-91
>             Project: Maven 2.x Shade Plugin
>          Issue Type: New Feature
>    Affects Versions: 1.4
>         Environment: N/A
>            Reporter: Andrew Swan
>            Assignee: Olivier Lamy
>             Fix For: 1.6
>
>         Attachments: MSHADE-91.patch
>
>
> Currently if multiple shaded artifacts contain the same fully-qualified class name, the plugin issues a warning on the console like this:
> {code}[WARNING] We have a duplicate foo.bar.Baz.class in <path-to-jar-in-local-repo>{code}
> In many cases such duplicates are a serious problem, e.g. when they are not the same version of that class.
> It would therefore be useful if the plugin (specifically the DefaultShader class) provided the option of failing the build if any duplicates are detected. This would be particularly useful in a continuous integration environment where there's no human operator to check the console output for warnings.

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