Using and classLoaders

[Serge Huber <sh...@jahia.com>]

Hi all,

I'm having some trouble using the Jelly define tags. Basically what I'm 
trying to do is define a jellyBean tag to use the Jasper compiler on a 
Tomcat version of my choice. So far I have tried something along the 
lines of :

  <define:taglib uri="jasper">
    <ant:path id="jspc.classpath">
      <echo message="Java home=${java.home}" />
      <ant:pathelement location="${java.home}/../lib/tools.jar"/>
      <ant:fileset dir="${catalina.home.dir}/bin">
        <ant:include name="*.jar"/>
      </ant:fileset>
      <ant:fileset dir="${catalina.home.dir}/server/lib">
        <ant:include name="*.jar"/>
      </ant:fileset>
      <ant:fileset dir="${catalina.home.dir}/common/lib">
        <ant:include name="*.jar"/>
      </ant:fileset>
      <ant:path refid="maven.dependency.classpath"/>
      <ant:pathelement path="${maven.build.dest}"/>
    </ant:path>
    <define:classLoader var="jasperClassLoader" url="${jspc.classpath}" />
    <define:jellybean
      classLoader="${jasperClassLoader}"
      name="JspC"
      className="org.apache.jasper.JspC"
      method="execute"
      />
  </define:taglib>

but this doesn't work because I can't reference the Ant refid in the 
classloader tag. Also it seems the classLoader tag only accepts a SINGLE 
URL as a parameter, not a collection of them (I looked at the source 
code for this tag and this was my understanding).

I know that I can use the dependency classpath to define all I need, but 
that means hardcoding the Tomcat version I can use this tag with, which 
is what I'm trying to undo. I've searched all over Google, Maven and 
Jelly websites and I must say I'm at a loss here. Any help would be 
greatly appreciated !

Regards,
  Serge Huber.

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