going through all directory files in a maven script

[Nicolas FRANK <nf...@financeactive.com>]

Hello,
 
I am trying to write a goal (later on it will probably be a plugin), to
execute the main method on every files of a classpath (this is for special
classes that are available in a separate sourcepath).
 
All my classes are compiled under a ${rttest.classes.dir} directory.
 
What I am wondering is how to get the list of all classes under this
directory (and of course sub-directories) in order to perform forEach and use
the following code :
 
 
<j:forEach var="class.to.test" items="${all.class.to.test}">
 
      <echo>testing : ${all.class.to.test}</echo>
 
      <java classname="${class.to.test}" fork="yes">
        <ant:classpath>
            <pathelement path="${maven.build.dest}"/>
            <path refid="maven.dependency.classpath"/>
        </ant:classpath>
    </java>
 
     </j:forEach>
 
So how to initialize the ${all.class.to.test} varialbe correctly ?
 
Thank's for your help.
 
Nicolas.