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 }