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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.item.support;
18  
19  import org.springframework.batch.item.ItemProcessor;
20  
21  /**
22   * Simple {@link ItemProcessor} that does nothing - simply passes its argument
23   * through to the caller. Useful as a default when the reader and writer in a
24   * business process deal with items of the same type, and no transformations are
25   * required.
26   * 
27   * @author Dave Syer
28   * 
29   */
30  public class PassThroughItemProcessor<T> implements ItemProcessor<T, T> {
31  
32  	/**
33  	 * Just returns the item back to the caller.
34  	 * 
35  	 * @return the item
36  	 * @see ItemProcessor#process(Object)
37  	 */
38      @Override
39  	public T process(T item) throws Exception {
40  		return item;
41  	}
42  
43  }