001// ***************************************************************************************************************************
002// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.  See the NOTICE file *
003// * distributed with this work for additional information regarding copyright ownership.  The ASF licenses this file        *
004// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance            *
005// * with the License.  You may obtain a copy of the License at                                                              *
006// *                                                                                                                         *
007// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
008// *                                                                                                                         *
009// * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an  *
010// * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the License for the        *
011// * specific language governing permissions and limitations under the License.                                              *
012// ***************************************************************************************************************************
013package org.apache.juneau.internal;
014
015import java.util.*;
016
017/**
018 * Wraps an existing map inside an extensible interface so that convenience methods can be added to the subclass.
019 *
020 * @param <K> The key type.
021 * @param <V> The value type.
022 */
023public class WrappedMap<K,V> implements Map<K,V> {
024
025   private final Map<K,V> inner;
026
027   /**
028    * Constructor.
029    *
030    * @param inner The inner map.
031    */
032   protected WrappedMap(Map<K,V> inner) {
033      this.inner = inner;
034   }
035
036   @Override /* Map */
037   public void clear() {
038      inner.clear();
039   }
040
041   @Override
042   public boolean containsKey(Object key) {
043      return inner.containsKey(key);
044   }
045
046   @Override /* Map */
047   public boolean containsValue(Object value) {
048      return inner.containsValue(value);
049   }
050
051   @Override /* Map */
052   public Set<java.util.Map.Entry<K,V>> entrySet() {
053      return inner.entrySet();
054   }
055
056   @Override /* Map */
057   public V get(Object key) {
058      return inner.get(key);
059   }
060
061   @Override /* Map */
062   public boolean isEmpty() {
063      return inner.isEmpty();
064   }
065
066   @Override /* Map */
067   public Set<K> keySet() {
068      return inner.keySet();
069   }
070
071   @Override /* Map */
072   public V put(K key, V value) {
073      return inner.put(key, value);
074   }
075
076   @Override /* Map */
077   public void putAll(Map<? extends K,? extends V> m) {
078      inner.putAll(m);
079   }
080
081   @Override /* Map */
082   public V remove(Object key) {
083      return inner.remove(key);
084   }
085
086   @Override /* Map */
087   public int size() {
088      return inner.size();
089   }
090
091   @Override /* Map */
092   public Collection<V> values() {
093      return inner.values();
094   }
095}