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1   /*
2    * Copyright 2007-2012 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  
17  package org.springbyexample.bean.scope.thread;
18  
19  /**
20   * Thread scope <code>Runnable</code> meant to be used 
21   * with a thread executor.  Cached thread scope beans are 
22   * cleared and bean destruction callbacks are  
23   * run after the <code>Runnable</code> finishes.
24   * 
25   * @author David Winterfeldt
26   */
27  public class ThreadScopeRunnable implements Runnable {
28      
29      protected Runnable target = null;
30  
31      /**
32       * Constructor
33       */
34      public ThreadScopeRunnable(Runnable target) {
35          this.target = target;
36      }
37  
38      /**
39       * Runs <code>Runnable</code> target and 
40       * then afterword processes thread scope 
41       * destruction callbacks.
42       */
43      public final void run() {
44          try {
45              target.run();
46          } finally {
47              ThreadScopeContextHolder.currentThreadScopeAttributes().clear();
48          }
49      }
50  
51  }