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1   /*
2    * Copyright 2006-2007 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.batch.core.scope.context;
18  
19  import org.aspectj.lang.annotation.Around;
20  import org.aspectj.lang.annotation.Aspect;
21  import org.springframework.batch.core.JobInterruptedException;
22  import org.springframework.batch.core.Step;
23  import org.springframework.batch.core.StepExecution;
24  
25  /**
26   * Convenient aspect to wrap a single threaded step execution, where the
27   * implementation of the {@link Step} is not step scope aware (i.e. not the ones
28   * provided by the framework).
29   * 
30   * @author Dave Syer
31   * 
32   */
33  @Aspect
34  public class StepScopeManager {
35  
36  	@Around("execution(void org.springframework.batch.core.Step+.execute(*)) && target(step) && args(stepExecution)")
37  	public void execute(Step step, StepExecution stepExecution) throws JobInterruptedException {
38  		StepSynchronizationManager.register(stepExecution);
39  		try {
40  			step.execute(stepExecution);
41  		}
42  		finally {
43  			StepSynchronizationManager.release();
44  		}
45  	}
46  
47  }