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From Chris Veal <cmv...@gmail.com>
Subject Fwd: Overlapping Classes
Date Fri, 07 Feb 2014 22:35:57 GMT
I'm using the maven shade plugin with apache-log4j-extras-1.2.17
and log4j-1.2.17. That plugin takes the project artifacts and all its
dependencies and puts them in a single jar. During compilation, the plugin
states:

[WARNING] apache-log4j-extras-1.2.17.jar, log4j-1.2.17.jar define 126
overlappping classes:
[WARNING]   - org.apache.log4j.xml.DOMConfigurator$2
[WARNING]   - org.apache.log4j.xml.DOMConfigurator$5
[WARNING]   - org.apache.log4j.NDC$DiagnosticContext
[WARNING]   - org.apache.log4j.spi.AppenderAttachable
[WARNING]   - org.apache.log4j.spi.ErrorHandler
[WARNING]   - org.apache.log4j.spi.RootCategory
[WARNING]   - org.apache.log4j.pattern.PatternConverter
[WARNING]   - org.apache.log4j.TTCCLayout
[WARNING]   - org.apache.log4j.RollingCalendar
[WARNING]   - org.apache.log4j.spi.Configurator
[WARNING]   - 116 more...
[WARNING] maven-shade-plugin has detected that some .class files
[WARNING] are present in two or more JARs. When this happens, only
[WARNING] one single version of the class is copied in the uberjar.
[WARNING] Usually this is not harmful and you can skeep these
[WARNING] warnings, otherwise try to manually exclude artifacts
[WARNING] based on mvn dependency:tree -Ddetail=true and the above
[WARNING] output
[WARNING] See http://docs.codehaus.org/display/MAVENUSER/Shade+Plugin

If I exclude apache-log4j-extras-1.2.17, then my code complains about not
having the updated RollingAppender.

If I exclude log4j-1.2.17, then my code complains that it can't find
RendererMap.

Any ideas on how to get this code to work properly with the overlapping
classes?

Thanks,

Chris

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