001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.commons.flatfile.entityfactory;
018
019import java.util.Map;
020
021import org.apache.commons.flatfile.Entity;
022import org.apache.commons.flatfile.EntityFactory;
023import org.apache.commons.lang3.ObjectUtils;
024import org.apache.commons.lang3.Validate;
025
026/**
027 * Stores prototype entities in a Map and returns cloned Entities.
028 * @version $Revision: 1301247 $ $Date: 2012-03-15 17:19:19 -0500 (Thu, 15 Mar 2012) $
029 */
030public class CloningEntityFactory implements EntityFactory {
031    private Map<? extends Object, ? extends Entity> lookup;
032
033    /**
034     * Create a new CloningEntityFactory.
035     * @param lookup lookup Map
036     */
037    public CloningEntityFactory(Map<? extends Object, ? extends Entity> lookup) {
038        this.lookup = Validate.notNull(lookup);
039    }
040
041    /**
042     * {@inheritDoc}
043     */
044    public Entity getEntity(Object cue) {
045        return ObjectUtils.clone(lookup.get(cue));
046    }
047
048}