/*******************************************************************************

  * Copyright (c) 2008-2009 SWTBot Committers and others.

  * All rights reserved. This program and the accompanying materials

  * are made available under the terms of the Eclipse Public License v1.0

  * which accompanies this distribution, and is available at

  * http://www.eclipse.org/legal/epl-v10.html

  *

  * Contributors:

  *     Ketan Padegaonkar - initial API and implementation

  *******************************************************************************/

 package org.eclipse.swtbot.swt.finder.utils;

 import java.util.HashMap;

 import java.util.Iterator;

 import java.util.Map.Entry;

 /**

  * <b>Note: This is not error proof, and adding the same key twice with a different value will have uncertain

  * results.</b>

  *

  * @author Ketan Padegaonkar <KetanPadegaonkar [at] gmail [dot] com>

  * @version $Id$

  * @noinstantiate This class is not intended to be instantiated by clients.

  * @noextend This class is not intended to be subclassed by clients.

  */

 public class BidiMap<K, V> implements Iterable<Entry<K, V>> {

         private final HashMap<K, V>        forward;

         private final HashMap<V, K>        reverse;

         public BidiMap() {

                 forward = new HashMap<K, V>();

                 reverse = new HashMap<V, K>();

         }

         public void put(K k, V v) {

                 forward.put(k, v);

                 reverse.put(v, k);

         }

         public K getKey(V v) {

                 return reverse.get(v);

         }

         public int size() {

                 return forward.size();

         }

         public Iterator<Entry<K, V>> iterator() {

                 return forward.entrySet().iterator();

         }

         public V getValue(K k) {

                 return forward.get(k);

         }

 }