gw.util.PredicatedSet Maven / Gradle / Ivy
/*
* Copyright 2014 Guidewire Software, Inc.
*/
package gw.util;
import java.util.Collection;
import java.util.HashSet;
public class PredicatedSet extends HashSet {
private final Predicate _predicate;
public PredicatedSet(int initialCapacity, Predicate predicate) {
super(initialCapacity);
_predicate = predicate;
}
public PredicatedSet(Predicate predicate) {
_predicate = predicate;
}
public boolean add(E o) {
if (_predicate.evaluate(o)) {
return super.add(o);
}
return false;
}
public boolean addAll(Collection c) {
boolean changed = false;
for(E e: c) {
if (_predicate.evaluate(e)) {
if (super.add(e)) {
changed = true;
}
}
}
return changed;
}
}