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From "Andrey Utis (JIRA)" <>
Subject [jira] (MPMD-161) PMD/CPD violation exclusions by class/issue
Date Fri, 18 Jan 2013 13:30:13 GMT
Andrey Utis created MPMD-161:

             Summary: PMD/CPD violation exclusions by class/issue
                 Key: MPMD-161
             Project: Maven 2.x PMD Plugin
          Issue Type: New Feature
          Components: CPD, PMD
            Reporter: Andrey Utis
         Attachments: pmd2.7.1_exclusions2.patch

I work on a system that has a lot of legacy code with a lot of PMD/CPD violations. Introducing
PMD to the build is not an easy option, since the build would always fail. So the next best
thing is to exclude any existing violations and only fail if a new violation is introduced.
Unfortunately, if I have thousands of violations, PMD doesn't provide a good way to do this.
I'd have to add comments or annotations to all these places to ignore the violation.

We came up with an alternative solution to this. We modified the PMD plugin to read a properties
file that contains a mapping of class name to a list of excluded violations. If a particular
violation is in this file, it does not cause the build to fail. Similar idea for CPD. 

An svn patch is attached (apply to 2.7.1)

(Disclaimer: this is probably not the most elegant piece of code but it works and it was quick.
Feel free to re-factor and make it more in line with the rest of the plugin code)

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