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https://issues.apache.org/jira/browse/MCHECKSTYLE-412?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17725300#comment-17725300
 ] 

ASF GitHub Bot commented on MCHECKSTYLE-412:
--------------------------------------------

gmshake commented on code in PR #76:
URL: 
https://github.com/apache/maven-checkstyle-plugin/pull/76#discussion_r1201858564


##########
src/main/java/org/apache/maven/plugins/checkstyle/AbstractCheckstyleReport.java:
##########
@@ -427,6 +428,14 @@ public abstract class AbstractCheckstyleReport extends 
AbstractMavenReport {
                     + "        
\"https://checkstyle.org/dtds/configuration_1_3.dtd\";>\n")
     private String checkstyleRulesHeader;
 
+    /**
+     * Specifies whether generated source files should be excluded for 
Checkstyle.

Review Comment:
   Done





> Exclude generated sources / test-sources from default source / test-source 
> directories
> --------------------------------------------------------------------------------------
>
>                 Key: MCHECKSTYLE-412
>                 URL: https://issues.apache.org/jira/browse/MCHECKSTYLE-412
>             Project: Maven Checkstyle Plugin
>          Issue Type: Improvement
>          Components: checkstyle:check, checkstyle:checkstyle
>    Affects Versions: 3.1.2
>            Reporter: Zhenlei Huang
>            Priority: Minor
>
> The default value of parameter `sourceDirectories` isĀ  
> `${project.compileSourceRoots}`, which includes generated sources. And for 
> `testSourceDirectories` is `${project.testCompileSourceRoots}` which includes 
> generated test sources.
> The major usage of checkstyle is to enforce rules on human written codes and 
> docs. The generated ones commonly come from third-party templates or scripts, 
> and they probably do not meet user defined checkstyle rules.
> We can bravely conclude exclude the generated sources / test sources 
> directories and the impact should be trivial, although it is a breaking 
> change.



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