/*
    * Copyright 2006-2007 the original author or authors.
    *
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    *      http://www.apache.org/licenses/LICENSE-2.0
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.springframework.batch.item.file.mapping;
  
  import org.springframework.batch.item.file.LineMapper;
  import org.springframework.batch.item.file.transform.FieldSet;
  import org.springframework.batch.item.file.transform.LineTokenizer;
  import org.springframework.beans.factory.InitializingBean;
  import org.springframework.util.Assert;
  
  /**
   * Two-phase {@link LineMapper} implementation consisting of tokenization of the line into {@link FieldSet} followed by
   * mapping to item. If finer grained control of exceptions is needed, the {@link LineMapper} interface should be
   * implemented directly.
   * 
   * @author Robert Kasanicky
   * @author Lucas Ward
   * 
   * @param <T> type of the item
   */
  public class DefaultLineMapper<T> implements LineMapper<T>, InitializingBean {
  
  	private LineTokenizer tokenizer;
  
  	private FieldSetMapper<T> fieldSetMapper;
  
      @Override
  	public T mapLine(String line, int lineNumber) throws Exception {
  		return fieldSetMapper.mapFieldSet(tokenizer.tokenize(line));
  	}
  
  	public void setLineTokenizer(LineTokenizer tokenizer) {
  		this.tokenizer = tokenizer;
  	}
  
  	public void setFieldSetMapper(FieldSetMapper<T> fieldSetMapper) {
  		this.fieldSetMapper = fieldSetMapper;
  	}
  
      @Override
  	public void afterPropertiesSet() {
  		Assert.notNull(tokenizer, "The LineTokenizer must be set");
  		Assert.notNull(fieldSetMapper, "The FieldSetMapper must be set");
  	}
  
  }