[jira] Commented: (MASSEMBLY-285) regression: duplicate files added to the assembly

["Chad McHenry (JIRA)" <ji...@codehaus.org>]

    [ https://jira.codehaus.org/browse/MASSEMBLY-285?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=284982#comment-284982 ] 

Chad McHenry commented on MASSEMBLY-285:
----------------------------------------

This is still an issue in maven-assembly-plugin-2.2.2.

(i) The maven-shade-plugin (mentioned in [jar-with-dependencies|http://maven.apache.org/plugins/maven-assembly-plugin/descriptor-refs.html#jar-with-dependencies] pre-defined descriptor) can create standalone (uber) jars and does not duplicate files.

{code:xml}<!-- Shade can create a standalone jar -->
<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-shade-plugin</artifactId>
  <version>1.5</version>
  <executions>
    <execution>
      <phase>package</phase>
      <goals><goal>shade</goal></goals>
      <configuration>
        <transformers>
          <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
            <mainClass>${mainClass}</mainClass>
          </transformer>
        </transformers>
        <shadedArtifactAttached>true</shadedArtifactAttached>
        <shadedClassifierName>standalone</shadedClassifierName>
      </configuration>
    </execution>
  </executions>
</plugin>
{code}

> regression: duplicate files added to the assembly
> -------------------------------------------------
>
>                 Key: MASSEMBLY-285
>                 URL: https://jira.codehaus.org/browse/MASSEMBLY-285
>             Project: Maven 2.x Assembly Plugin
>          Issue Type: Bug
>    Affects Versions: 2.2-beta-1
>            Reporter: Brett Porter
>            Assignee: John Casey
>            Priority: Blocker
>             Fix For: 2.2-beta-3
>
>
> I found that it was possible to add a file twice to the assembly through different filesets (a zip file) so that when it extracted it prompted for overwrite.
> It should error out or collapse the entries (as 2.1 did).

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