public Iterator iterator() {
// If nodefilters are set, must execute them first to create node-set
if (xi.getNodeFilters() != null && !xi.getNodeFilters().isEmpty()) {
return Collections.unmodifiableSet(getNodeSet(xi.getNodeFilters())).iterator();
}
try {
return Collections.unmodifiableSet(xi.getNodeSet()).iterator();
} catch (Exception e) {
// should not occur
throw new RuntimeException("unrecoverable error retrieving nodeset", e);
}
}
