JdkConcurrentConversationLock


1   /*
2    * Copyright 2002-2006 the original author or authors.
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.springframework.webflow.conversation.impl;
17  
18  import java.io.Serializable  ;
19  import java.util.concurrent.locks.Lock  ;
20  import java.util.concurrent.locks.ReentrantLock  ;
21  
22  /**
23   * A conversation lock that relies on a {@link ReentrantLock} within Java 5's
24   * <code>util.concurrent.locks</code> package.
25   * 
26   * @author Keith Donald
27   */
28  class JdkConcurrentConversationLock implements ConversationLock, Serializable   {
29  
30      /**
31       * The lock.
32       */
33      private Lock   lock = new ReentrantLock  ();
34  
35      public void lock() {
36          lock.lock();
37      }
38  
39      public void unlock() {
40          lock.unlock();
41      }
42  }

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