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https://issues.apache.org/jira/browse/MJAR-198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16420958#comment-16420958
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Archie Cobbs commented on MJAR-198:
-----------------------------------
FYI, this broke my build, which used the jar plugin twice but with different
{{finalName}} configurations (and no {{classifier}}'s).
Not sure if that was intended or if my original configuration was somehow
"unauthorized".
Seems like the build should fail if the actual JAR file would get overridden,
not if the classifier happens to be the same. That is, the conflict is at the
actual filesystem level.
> jar:jar without classifier replaces default jar
> -----------------------------------------------
>
> Key: MJAR-198
> URL: https://issues.apache.org/jira/browse/MJAR-198
> Project: Maven JAR Plugin
> Issue Type: Bug
> Affects Versions: 2.3.1, 2.3.2, 2.4, 2.5, 2.6
> Environment: Windows 8.1 Pro
> JDK 1.8 45
> Maven 3.2.5
> Reporter: Elias Elmqvist Wulcan
> Assignee: Karl Heinz Marbaise
> Priority: Minor
> Labels: newbie
> Fix For: 3.0.0
>
> Attachments: 0.tar, mvn.install.debug.txt
>
>
> If I add an execution of jar:jar in a project of packaging jar and do not
> configure a classifier for the additional jar, the additional jar will be
> installed instead of the default jar.
> Omitting a classifier in the configuration for the goal jar:jar is documented
> to have the effect that the jar will not be attached and this is the behavior
> that I want. Instead, the jar is attached and replaces the default jar.
> AbstractJarMojo.java:254 checks nullness of classifier to decide whether to
> attach or not. JarMojo.java:51 declares a default value the empty string for
> classifier. Maybe the combination of these lines cause the bug.
> http://svn.apache.org/viewvc/maven/plugins/tags/maven-jar-plugin-2.6/src/main/java/org/apache/maven/plugin/jar/AbstractJarMojo.java?revision=1664111&view=markup
> http://svn.apache.org/viewvc/maven/plugins/tags/maven-jar-plugin-2.6/src/main/java/org/apache/maven/plugin/jar/JarMojo.java?revision=1664111&view=markup
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