[OPENJPA-2090] factor out openjpa-project/checkstyle.xml to own maven project

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.2.0
• Component/s: build / infrastructure
• Assignee: Mark Struberg
• Reporter: Mark Struberg
• Created: 09/Dec/11 12:08
• Updated: 05/Apr/15 16:16

Description

Currently our build scripts adopt a file-based way to reference our checkstyle configuration. With having lots of sub-modules with a deeply nested structure, this introduces quite some maintenance effort (e.g. when you try to add integration tests).

There is another way to incorporate checkstyles for a project easily: serve them in an own maven artifact and include them as dependency of the maven-checkstyle-plugin.
See OpenWebBeans and MyFaces of how this looks like:
https://svn.apache.org/repos/asf/openwebbeans/build-tools/trunk/ for the openwebbeans-checkstyle-rules, and
https://svn.apache.org/repos/asf/openwebbeans/trunk/pom.xml for how it's being used (see maven-checkstyle-plugin section)

This can e.g. also be used to detect missing ASF headers in java files, etc.