@Override
Iterator<Relationship> doExpand(final Path path, BranchState state) {
return new FilteringIterator<Relationship>(
expander.doExpand(path, state),
new Predicate<Relationship>() {
public boolean accept(Relationship item) {
Path extendedPath = extend(path, item);
for (Filter filter : filters) {
if (filter.exclude(extendedPath)) {
return false;
}
}
return true;
}
});
}
public boolean isEmpty() {
return !expander.doExpand(path, state).hasNext();
}