Mixin POM fragments
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Key: MNG-5102
URL: http://jira.codehaus.org/browse/MNG-5102
Project: Maven 2 & 3
Issue Type: Wish
Components: POM
Affects Versions: 2.2.1
Reporter: Anthony Whitford
I am looking for a way to _mixin_ POM fragments into POMs. Note that this idea
is beyond parent pom inheritance because all projects inherit from a corporate
parent pom. The problem that I am running into is that the corporate parent
pom is turning into an _"everything but the kitchen sink"_ POM and I'd like to
dissect it into POM fragments relevant for individual modules.
For example, I would like to have mixins for:
* Java projects (that include static code analysis plugins, javadoc, etc.)
* JPA projects (that include DDL generation)
* Flex projects (that include flexmojos, asdoc, etc.)
* Scala projects (that include the maven-scala-compiler plugin, scaladoc, etc.)
* JavaScript projects (that include build plugins like
maven-yuicompressor-plugin with jslint and compress goals)
Hopefully, you get the idea. Without the ability to factor pom logic, we are
left with two symptoms:
# copy/paste duplication
# complex _"it does it all"_ parent poms (which slow down builds because more
plugins are loaded even though they might not do anything material)
Note that a project may include multiple mixins as I could have a project that
contains Java code, Scala code, and JavaScript.
Another idea is that the mixins could be parameterized, so that the ultimate
pom can be customized based on the parameters (like tokens).
I recall reading about Mixins coming in Maven 3.1, but could not find any such
issue to watch, so am creating one.
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