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https://jira.codehaus.org/browse/MPMD-163?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=319978#comment-319978
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Mirko Friedenhagen commented on MPMD-163:
-----------------------------------------
When running the unit-tests, this shows as well:
{code}
Running org.apache.maven.plugin.pmd.PmdViolationCheckMojoTest
[INFO] You have 17 warnings. For more details
see:/Users/mifr/workspace/foss/maven-pmd-plugin-3.0/target/test/unit/default-configuration/target/pmd.xml
[INFO] PMD Warning: def.configuration.App:80 Rule:UselessParentheses Priority:4
Useless parentheses..
[INFO] PMD Warning: def/configuration/App2.java:22 Rule:UnusedImports
Priority:4 Avoid unused imports such as 'java.io.File'.
[INFO] PMD Warning: def/configuration/App2.java:22 Rule:UnusedImports
Priority:4 Avoid unused imports such as 'java.io.File'.
[INFO] PMD Warning: def.configuration.AppSample:58 Rule:UselessParentheses
Priority:4 Useless parentheses..
[INFO] PMD Warning: def.configuration.AppSample:58 Rule:UselessParentheses
Priority:4 Useless parentheses..
[INFO] PMD Warning: def.configuration.AppSample:58 Rule:UselessParentheses
Priority:4 Useless parentheses..
[INFO] PMD Failure: def.configuration.App:31 Rule:UnusedPrivateField Priority:3
Avoid unused private fields such as 'unusedVar2'..
[INFO] PMD Failure: def.configuration.App:56 Rule:EmptyCatchBlock Priority:3
Avoid empty catch blocks.
[INFO] PMD Failure: def.configuration.AppSample:27 Rule:UnusedPrivateField
Priority:3 Avoid unused private fields such as 'unusedVar'..
[INFO] PMD Failure: def.configuration.AppSample:27 Rule:UnusedPrivateField
Priority:3 Avoid unused private fields such as 'unusedVar'..
[INFO] PMD Failure: def.configuration.AppSample:27 Rule:UnusedPrivateField
Priority:3 Avoid unused private fields such as 'unusedVar'..
[INFO] PMD Failure: def.configuration.AppSample:45 Rule:UnusedFormalParameter
Priority:3 Avoid unused method parameters such as 'unusedParam'..
[INFO] PMD Failure: def.configuration.AppSample:45 Rule:UnusedFormalParameter
Priority:3 Avoid unused method parameters such as 'unusedParam'..
[INFO] PMD Failure: def.configuration.AppSample:45 Rule:UnusedFormalParameter
Priority:3 Avoid unused method parameters such as 'unusedParam'..
[INFO] PMD Failure: def.configuration.AppSample:45 Rule:UnusedPrivateMethod
Priority:3 Avoid unused private methods such as 'unusedMethod(String)'..
[INFO] PMD Failure: def.configuration.AppSample:45 Rule:UnusedPrivateMethod
Priority:3 Avoid unused private methods such as 'unusedMethod(String)'..
[INFO] PMD Failure: def.configuration.AppSample:45 Rule:UnusedPrivateMethod
Priority:3 Avoid unused private methods such as 'unusedMethod(String)'..
Caught Expected Message: You have 11 PMD violations and 6 warnings. For more
details
see:/Users/mifr/workspace/foss/maven-pmd-plugin-3.0/target/test/unit/default-configuration/target/pmd.xml
{code}
> PMD issues are reported multiple times
> --------------------------------------
>
> Key: MPMD-163
> URL: https://jira.codehaus.org/browse/MPMD-163
> Project: Maven 2.x PMD Plugin
> Issue Type: Bug
> Components: PMD
> Affects Versions: 3.0
> Environment: Apache Maven 3.0.4
> Sun jdk1.6.0_04 on Debian Lenny
> Oracle jdk 1.7.0_13 on Mac OS X (10.8.2)
> Reporter: Mirko Friedenhagen
> Priority: Blocker
> Attachments: my-app.zip
>
>
> After updating maven-pmd-plugin from 2.7.1 to 3.0, in some of our projects
> the number of pmd violations exploded. Some are valid (new rules), however I
> have a project where the same violation will show up more than 70 times!
> See below for an example of this dramatic outcome:
> {code}
> [mifr@host SomeService]$ grep '^<violation' target/pmd.xml | wc
> 3682 44655 1239557
> [mifr@host SomeService]$ grep '^<violation' target/pmd.xml | sort | uniq | wc
> 92 1120 30832
> {code}
> The number of source files in this project in total is 96, so a wild guess
> would be, that the plugin readds already existing violations (the first
> (unique) violation occurs once, the second 4 times and so on). I will try t
> take a look at the source code or to get a working testcase.
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