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 import java.util.concurrent.Callable;
20
21 /**
22 * Thread scope <code>Callable</code> meant to be used
23 * with a thread executor. Cached thread scope beans are
24 * cleared and bean destruction callbacks are
25 * run after the <code>Callable</code> finishes.
26 *
27 * @author David Winterfeldt
28 */
29 public class ThreadScopeCallable<V> implements Callable<V> {
30
31 protected Callable<V> target = null;
32
33 /**
34 * Constructor
35 */
36 public ThreadScopeCallable(Callable<V> target) {
37 this.target = target;
38 }
39
40 /**
41 * Runs <code>Runnable</code> target and
42 * then afterword processes thread scope
43 * destruction callbacks.
44 */
45 public V call() throws Exception {
46 try {
47 return target.call();
48 } finally {
49 ThreadScopeContextHolder.currentThreadScopeAttributes().clear();
50 }
51 }
52
53 }