/* This file is part of the db4o object database http://www.db4o.com
Copyright (C) 2004 - 2011 Versant Corporation http://www.versant.com
db4o is free software; you can redistribute it and/or modify it under
the terms of version 3 of the GNU General Public License as published
by the Free Software Foundation.
db4o is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License along
with this program. If not, see http://www.gnu.org/licenses/. */
package com.db4o.foundation;
/**
* @exclude
*/
public class IdentitySet4 extends HashtableBase implements Iterable4 {
public IdentitySet4(){
}
public IdentitySet4(int size){
super(size);
}
public boolean contains(Object obj){
return findWithSameKey(new HashtableIdentityEntry(obj)) != null;
}
public void add(Object obj){
if(null == obj){
throw new ArgumentNullException();
}
putEntry(new HashtableIdentityEntry(obj));
}
public void remove(Object obj) {
if(null == obj){
throw new ArgumentNullException();
}
removeIntEntry(System.identityHashCode(obj));
}
public Iterator4 iterator() {
return valuesIterator();
}
}