private static void iterateParents(
Operator<?> operator, Function<Operator<?>> function, Set<Operator<?>> visited) {
if (!visited.add(operator)) {
return;
}
function.apply(operator);
if (operator.getNumParent() > 0) {
for (Operator<?> parent : operator.getParentOperators()) {
iterateParents(parent, function, visited);
}
}
}
public static void iterateParents(Operator<?> operator, Function<Operator<?>> function) {
iterateParents(operator, function, new HashSet<Operator<?>>());
}