001/**
002 * Copyright 2010-2014 The Kuali Foundation
003 *
004 * Licensed under the Educational Community License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.opensource.org/licenses/ecl2.php
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.kuali.common.util.spring;
017
018import java.util.Collection;
019import java.util.List;
020
021import org.kuali.common.util.Assert;
022import org.springframework.beans.factory.FactoryBean;
023import org.springframework.beans.factory.InitializingBean;
024
025/**
026 * Append all of the elements from <code>source</code> to the end of <code>target</code>
027 */
028public class AddToListFactoryBean<T> implements FactoryBean<List<T>>, InitializingBean {
029
030        List<T> source;
031        List<T> target;
032
033        @Override
034        public void afterPropertiesSet() throws Exception {
035                Assert.notNull(source, "source is null");
036                Assert.notNull(target, "target is null");
037                target.addAll(source);
038        }
039
040        @Override
041        public List<T> getObject() throws Exception {
042                return target;
043        }
044
045        @Override
046        public Class<?> getObjectType() {
047                return List.class;
048        }
049
050        @Override
051        public boolean isSingleton() {
052                return false;
053        }
054
055        public Collection<T> getSource() {
056                return source;
057        }
058
059        public void setSource(List<T> source) {
060                this.source = source;
061        }
062
063        public Collection<T> getTarget() {
064                return target;
065        }
066
067        public void setTarget(List<T> target) {
068                this.target = target;
069        }
070
071}