/*

  * 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.myfaces.shared.context.flash;

 import java.io.Serializable;

 /**

  * This class is a wrapper used to deal with concurrency issues when accessing the inner LRUMap.

  */

 class FlashClientWindowTokenCollection implements Serializable

 {

     private ClientWindowFlashTokenLRUMap lruMap;

     public FlashClientWindowTokenCollection(ClientWindowFlashTokenLRUMap lruMap)

     {

         this.lruMap = lruMap;

     }

     public FlashClientWindowTokenCollection()

     {

     }

     public synchronized void put(String key, String value)

     {

         lruMap.put(key, value);

     }

     public synchronized String get(String key)

     {

         return (String) lruMap.get(key);

     }

     public synchronized void remove(String key)

     {

         lruMap.remove(key);

     }

     public synchronized boolean isEmpty()

     {

         return lruMap.isEmpty();

     }

 }