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Java > Open Source Codes > org > springframework > core > task > SyncTaskExecutor


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
17 package org.springframework.core.task;
18
19 import org.springframework.util.Assert;
20
21 import java.io.Serializable JavaDoc;
22
23 /**
24  * <code>TaskExecutor</code> implementation that executes each task
25  * <i>synchronously</i> in the calling thread.
26  *
27  * <p>Mainly intended for testing scenarios.
28  *
29  * <p>Execution in the calling thread does have the advantage of participating
30  * in it's thread context, for example the thread context class loader or the
31  * thread's current transaction association. That said, in many cases,
32  * asynchronous execution will be preferable: choose an asynchronous
33  * <code>TaskExecutor</code> instead for such scenarios.
34  *
35  * @author Juergen Hoeller
36  * @see SimpleAsyncTaskExecutor
37  * @see org.springframework.scheduling.timer.TimerTaskExecutor
38  * @since 2.0
39  */
40 public class SyncTaskExecutor implements TaskExecutor, Serializable JavaDoc {
41
42     /**
43      * Executes the given <code>task</code> synchronously, through direct
44      * invocation of it's {@link Runnable#run() run()} method.
45      * @throws IllegalArgumentException if the given <code>task</code> is <code>null</code>
46      */
47     public void execute(Runnable JavaDoc task) {
48         Assert.notNull(task, "Runnable must not be null");
49         task.run();
50     }
51
52 }
53
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