public void execute() throws BuildException {
checkAttributes();
for (Iterator iter = sources.iterator(); iter.hasNext(); ) {
Resource r = (Resource) iter.next();
URLProvider up = (URLProvider) r.as(URLProvider.class);
URL source = up.getURL();
File dest = destination;
if (destination.isDirectory()) {
if (mapperElement == null) {
String path = source.getPath();