/*
* Copyright 2004-2015 the Seasar Foundation and the Others.
*
* 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.seasar.extension.jdbc.mapper;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.List;
import org.seasar.extension.jdbc.PropertyMapper;
import org.seasar.framework.util.FieldUtil;
/**
* 一対多関連のエンティティマッパーです。
*
* @author higa
*
*/
public class OneToManyEntityMapperImpl extends AbstractRelationshipEntityMapper {
/**
* {@link OneToManyEntityMapperImpl}を作成します。
*
* @param entityClass
* エンティティクラス
* @param propertyMappers
* プロパティマッパーの配列
* @param idIndices
* 識別子のインデックスの配列
* @param field
* 関連エンティティのフィールド
* @param inverseField
* 逆側の関連エンティティのフィールド
*/
public OneToManyEntityMapperImpl(Class<?> entityClass,
PropertyMapper[] propertyMappers, int[] idIndices, Field field,
Field inverseField) {
super(entityClass, propertyMappers, idIndices, field, inverseField);
}
@SuppressWarnings("unchecked")
@Override
protected void mapRelationship(Object target, Object entity) {
List list = (List) FieldUtil.get(field, target);
if (list == null) {
list = new ArrayList();
FieldUtil.set(field, target, list);
}
if (entity != null) {
if (!contains(list, entity)) {
list.add(entity);
}
if (inverseField != null) {
FieldUtil.set(inverseField, entity, target);
}
}
}
}