org.springframework.batch.item.file.transform.BeanWrapperFieldExtractor Maven / Gradle / Ivy
/*
* 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
*
* https://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.transform;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.springframework.beans.BeanWrapper;
import org.springframework.beans.BeanWrapperImpl;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.util.Assert;
/**
* This is a field extractor for a java bean. Given an array of property names,
* it will reflectively call getters on the item and return an array of all the
* values.
*
* @author Dan Garrette
* @since 2.0
*/
public class BeanWrapperFieldExtractor implements FieldExtractor, InitializingBean {
private String[] names;
/**
* @param names field names to be extracted by the {@link #extract(Object)} method.
*/
public void setNames(String[] names) {
Assert.notNull(names, "Names must be non-null");
this.names = Arrays.asList(names).toArray(new String[names.length]);
}
/**
* @see org.springframework.batch.item.file.transform.FieldExtractor#extract(java.lang.Object)
*/
@Override
public Object[] extract(T item) {
List