On 2010-06-11, Jon Stevens wrote:
> Ok, new question. Say I have a build.xml that looks like this:
> <project>
> <spath id="filelist.classpath" scope="unit">
> <sfilelist dir="${lib.dir}">
> <sfile name="${ant.jar}" scope="compile" />
> <sfile name="${ant-googlecode.jar}" scope="runtime" />
> <sfile name="svntask.jar" scope="runtime" />
> </sfilelist>
> <sfilelist dir="${target.dir}">
> <sfile name="sweetened.jar" src="src" scope="runtime" />
> </sfilelist>
> <sfilelist dir="${alexandria.dir}">
> <sfile name="${junit.jar}" scope="unit" />
> </sfilelist>
> </spath>
> <spath id="javac.classpath" scope="compile" refid="filelist.classpath" />
> <echo>
> javac.classpath: ${toString:javac.classpath}
> </echo>
> </project>
> spath extends Union.
> When the ${toString} is called, the spath.getCollection() method is
> called by ant. At that point, though, ant is calling the
> getCollection() method on the spath instance of filelist.classpath
I think it is this code in BaseResourceCollectionContainer that is
causing the problem for you
public final synchronized Iterator iterator() {
if (isReference()) {
return ((BaseResourceCollectionContainer)
getCheckedRef()).iterator();
}
Since you spath is a reference (the refid syntax) the iterator() method
just delegates to the "real" instance. Since that method is final (at
least in 1.8.0) you can't even override it.
> I guess one option would be to implement my own refid type system
> within my spath, but I was hoping that I could just use ant's.
You don't really want to use refid because this is meant to say a given
type is just a placeholder for something defined anywhere else. In your
case you just need to use a different name for the attribute (say
reference instead of refid) and just use Ant's reference system for all
the rest - don't make your baseclass think the instance was just a
placeholder.
Stefan
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