/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You 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 org.apache.commons.collections.bidimap;

import org.apache.commons.collections.BidiMap;
import org.apache.commons.collections.MapIterator;
import org.apache.commons.collections.map.AbstractMapDecorator;

Provides a base decorator that enables additional functionality to be added
to a BidiMap via decoration.

Methods are forwarded directly to the decorated map.

This implementation does not perform any special processing with the map views.
Instead it simply returns the set/collection from the wrapped map. This may be
undesirable, for example if you are trying to write a validating implementation
it would provide a loophole around the validation.
But, you might want that loophole, so this class is kept simple.
Author:
Stephen Colebourne
Since:
Commons Collections 3.0
Version:
$Revision: 646777 $ $Date: 2008-04-10 14:33:15 +0200 (Thu, 10 Apr 2008) $/** 
 * Provides a base decorator that enables additional functionality to be added
 * to a BidiMap via decoration.
 * <p>
 * Methods are forwarded directly to the decorated map.
 * <p>
 * This implementation does not perform any special processing with the map views.
 * Instead it simply returns the set/collection from the wrapped map. This may be
 * undesirable, for example if you are trying to write a validating implementation
 * it would provide a loophole around the validation.
 * But, you might want that loophole, so this class is kept simple.
 *
 * @since Commons Collections 3.0
 * @version $Revision: 646777 $ $Date: 2008-04-10 14:33:15 +0200 (Thu, 10 Apr 2008) $
 * 
 * @author Stephen Colebourne
 */
public abstract class AbstractBidiMapDecorator
        extends AbstractMapDecorator implements BidiMap {
    
    
Constructor that wraps (not copies).
Params:
map –  the map to decorate, must not be null
Throws:
IllegalArgumentException – if the collection is null/**
     * Constructor that wraps (not copies).
     *
     * @param map  the map to decorate, must not be null
     * @throws IllegalArgumentException if the collection is null
     */
    protected AbstractBidiMapDecorator(BidiMap map) {
        super(map);
    }

    
Gets the map being decorated.
Returns:
the decorated map/**
     * Gets the map being decorated.
     * 
     * @return the decorated map
     */
    protected BidiMap getBidiMap() {
        return (BidiMap) map;
    }

    //-----------------------------------------------------------------------
    public MapIterator mapIterator() {
        return getBidiMap().mapIterator();
    }

    public Object getKey(Object value) {
        return getBidiMap().getKey(value);
    }

    public Object removeValue(Object value) {
        return getBidiMap().removeValue(value);
    }

    public BidiMap inverseBidiMap() {
        return getBidiMap().inverseBidiMap();
    }

}