CheckstyleViolationCheckMojo: More flexible checkstyle:check-inflicted build 
failures
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                 Key: MCHECKSTYLE-104
                 URL: http://jira.codehaus.org/browse/MCHECKSTYLE-104
             Project: Maven 2.x Checkstyle Plugin
          Issue Type: New Feature
    Affects Versions: 2.2
            Reporter: Kaloyan Enimanev
         Attachments: CheckstyleViolationCheckMojo.java

Hey guys,
  first of all let me thank you for the wonderful job that you all do.  Our 
company's build process has rocketed a century forward after we replaced Ant 
with Maven.

  We're currently trying to migrate from Maven1 to Maven2. We have a Jelly goal 
 in our old M1 build that does similar job to "checkstyle:check" in M2,  but it 
verifies that a project does not have more than {{X}} Checkstyle Errors *and* 
{{Y}} Checkstyle Warnings.  That was not entirely possible to configure with 
M2, where one can choose to fail the build on more than 0 Errors *or* Warnings, 
where 0 is not a configurable value in contrast with {{X}} and {{Y}}.

I have scribbled several changes in 

{{/maven-checkstyle-plugin/src/main/java/org/apache/maven/plugin/checkstyle/CheckstyleViolationCheckMojo.java}}

where I basically replaced the parameter {{violationSeverity}} with 3 new 
parameters ({{maxErrors}}, {{maxWarnings}}, {{maxInfos}}) allowing the user a 
more flexible configuration  of checkstyle-inflicted build failures. 

Example :
The configuration
{code:xml}
<plugin>
  <artifactId>maven-checkstyle-plugin</artifactId>
  <configuration>
    <failsOnError>true</failsOnError>
    <maxErrors>0</maxErrors>
    <maxWarnings>100</maxWarnings>
     .....
  </configuration>
......
{code}

will fail the build of a project that has more than 0 Checkstyle Errors or more 
than 100 Checkstyle Warnings.


If you find such the feature useful and want to include it in some of the next 
releases of {{maven-checkstyle-plugin}} I will be happy to do the additional 
Documentation/Test Cases.

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