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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.file.mapping;
18  
19  import org.springframework.batch.item.file.LineMapper;
20  import org.springframework.batch.item.file.transform.FieldSet;
21  import org.springframework.batch.item.file.transform.LineTokenizer;
22  import org.springframework.beans.factory.InitializingBean;
23  import org.springframework.util.Assert;
24  
25  /**
26   * Two-phase {@link LineMapper} implementation consisting of tokenization of the line into {@link FieldSet} followed by
27   * mapping to item. If finer grained control of exceptions is needed, the {@link LineMapper} interface should be
28   * implemented directly.
29   * 
30   * @author Robert Kasanicky
31   * @author Lucas Ward
32   * 
33   * @param <T> type of the item
34   */
35  public class DefaultLineMapper<T> implements LineMapper<T>, InitializingBean {
36  
37  	private LineTokenizer tokenizer;
38  
39  	private FieldSetMapper<T> fieldSetMapper;
40  
41      @Override
42  	public T mapLine(String line, int lineNumber) throws Exception {
43  		return fieldSetMapper.mapFieldSet(tokenizer.tokenize(line));
44  	}
45  
46  	public void setLineTokenizer(LineTokenizer tokenizer) {
47  		this.tokenizer = tokenizer;
48  	}
49  
50  	public void setFieldSetMapper(FieldSetMapper<T> fieldSetMapper) {
51  		this.fieldSetMapper = fieldSetMapper;
52  	}
53  
54      @Override
55  	public void afterPropertiesSet() {
56  		Assert.notNull(tokenizer, "The LineTokenizer must be set");
57  		Assert.notNull(fieldSetMapper, "The FieldSetMapper must be set");
58  	}
59  
60  }