001/*
002 *  Copyright 2014 Anyware Services
003 *
004 *  Licensed under the Apache 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.apache.org/licenses/LICENSE-2.0
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 */
016
017package org.ametys.cms.content.references;
018
019import java.util.HashMap;
020import java.util.List;
021import java.util.Map;
022
023/**
024 * Outgoing references.
025 * <p>
026 * They are simply a {@link Map} where keys are the reference types (String) and
027 * values are the reference values (List) with some convenient methods.
028 * </p>
029 */
030public class OutgoingReferences extends HashMap<String, List<String>>
031{
032    /**
033     * Merge outgoing references with the current ones
034     * @param others The new references
035     */
036    public void merge(OutgoingReferences others)
037    {
038        if (others != null)
039        {
040            for (String type : others.keySet())
041            {
042                if (this.containsKey(type))
043                {
044                    this.get(type).addAll(others.get(type));
045                }
046                else
047                {
048                    this.put(type, others.get(type));
049                }
050            }
051        }
052    }
053}