/**
* Copyright 2007 Charlie Hubbard
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package flexjson;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
public class ChainedSet implements Set {
Set parent;
Set child;
public ChainedSet(Set parent) {
this.parent = parent;
this.child = new HashSet();
}
public int size() {
return this.child.size() + parent.size();
}
public boolean isEmpty() {
return this.child.isEmpty() && parent.isEmpty();
}
public boolean contains(Object o) {
return child.contains(o) || parent.contains(o);
}
public Iterator iterator() {
return new ChainedIterator(child, parent);
}
public Object[] toArray() {
Object[] carr = child.toArray();
Object[] parr = parent.toArray();
Object[] combined = new Object[carr.length + parr.length];
System.arraycopy(carr, 0, combined, 0, carr.length);
System.arraycopy(parr, 0, combined, carr.length, parr.length);
return combined;
}
public Object[] toArray(Object[] a) {
throw new IllegalStateException("Not implemeneted");
}
public boolean add(Object o) {
return child.add(o);
}
public boolean remove(Object o) {
return child.remove(o);
}
public boolean containsAll(Collection c) {
return child.containsAll(c) || parent.containsAll(c);
}
public boolean addAll(Collection c) {
return child.addAll(c);
}
public boolean retainAll(Collection c) {
return child.retainAll(c);
}
public boolean removeAll(Collection c) {
return child.removeAll(c);
}
public void clear() {
child.clear();
}
public Set getParent() {
return parent;
}
}
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