add support for jdk 6 javac -processorpath parameter
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Key: MCOMPILER-134
URL: http://jira.codehaus.org/browse/MCOMPILER-134
Project: Maven 2.x Compiler Plugin
Issue Type: New Feature
Affects Versions: 2.3.2
Reporter: Jürgen
Priority: Minor
Attachments: maven-compiler-plugin-2.3.3-SNAPSHOT.jar,
ProcCompilerMojo.java
add support for annotation processing javac option -processorpath
cf.
http://download.oracle.com/javase/6/docs/technotes/tools/windows/javac.html#processing
while not supported, annotation processor classes have to be supplied via
compile classpath.
annotation processor dependencies (e.g. database, xml processing, ...) might
not be wanted as project dependencies or event be in conflict with them.
as a workaround I have attached new ProcCompilerMojo, where I tried to
implement processorpath support
1) via a new configuration option: dependency resolution is done with bits of
code I copied from other maven classes like ProjectBuilder, ...
{code}
<configuration>
<proc>only</proc>
<processorpath>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-jdk14</artifactId>
<version>1.5.6</version>
</dependency>
<dependency>
<groupId>com.example</groupId>
<artifactId>annoproc</artifactId>
<version>1.0.0</version>
</dependency>
</processorpath>
</configuration>
{code}
2) (unused) via plugin dependencies: I basically make use of ProcCompilerMojo
classloader urls. This variant is quite "dirty". it adds unnecessary maven
plugin jars to annotation processor classpath and unnecessary annotation
processor jars to compiler-plugin classpath
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