content: /**
   * 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.activemq.memory;
  
  import java.util.Map;
  
  import java.util.concurrent.ConcurrentHashMap;
  
  /**
   * Use any Map to implement the Cache.  No cache eviction going on here.  Just gives
   * a Map a Cache interface.
   * 
   * 
   */
  public class MapCache implements Cache {
      
      protected final Map<Object, Object> map;
      
      public MapCache() {
          this(new ConcurrentHashMap<Object, Object>());
      }
      
      public MapCache(Map<Object, Object> map) {
          this.map = map;
      }
  
      public Object put(Object key, Object value) {
          return map.put(key, value);
      }
  
      public Object get(Object key) {
          return map.get(key);
      }
  
      public Object remove(Object key) {
          return map.remove(key);
      }
      
      public void close() {
          map.clear();
      }
  
      public int size() {
          return map.size();
      }
  }
  