ThreadLocalStorageImpl


1   // Copyright 2004, 2005 The Apache Software Foundation
2   //
3   // Licensed under the Apache License, Version 2.0 (the "License");
4   // you may not use this file except in compliance with the License.
5   // You may obtain a copy of the License at
6   //
7   //     http://www.apache.org/licenses/LICENSE-2.0
8   //
9   // Unless required by applicable law or agreed to in writing, software
10  // distributed under the License is distributed on an "AS IS" BASIS,
11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  // See the License for the specific language governing permissions and
13  // limitations under the License.
14  
15  package org.apache.hivemind.service.impl;
16  
17  import java.util.HashMap  ;
18  import java.util.Map  ;
19  
20  import org.apache.hivemind.service.ThreadLocalStorage;
21  
22  /**
23   * Implementation of {@link org.apache.hivemind.service.ThreadLocalStorage}.
24   * <p>
25   * Starting with release 1.2, this implementation was simplified, and its service model changed to
26   * threaded.
27   * 
28   * @author Howard Lewis Ship, Harish Krishnaswamy
29   */
30  public class ThreadLocalStorageImpl implements ThreadLocalStorage
31  {
32      // Created anew for each instance of TLS in each thread.
33  
34      private final Map   _map = new HashMap  ();
35  
36      public Object   get(String   key)
37      {
38          return _map.get(key);
39      }
40  
41      public void put(String   key, Object   value)
42      {
43          _map.put(key, value);
44      }
45  
46      public void clear()
47      {
48          _map.clear();
49      }
50  }
51

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