001/*
002 *  Copyright 2019 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 */
016package org.ametys.cms.content.type;
017
018import java.util.ArrayList;
019import java.util.Collections;
020import java.util.List;
021
022import org.ametys.cms.content.references.OutgoingReferences;
023import org.ametys.cms.content.references.Referencer;
024import org.ametys.cms.data.Reference;
025import org.ametys.cms.data.type.impl.ReferenceRepositoryElementType;
026
027/**
028 * Class for reference type of elements used by contents
029 */
030public class ReferenceContentElementType extends ReferenceRepositoryElementType implements Referencer
031{
032    public OutgoingReferences getOutgoingReferences(Object value)
033    {
034        if (value != null)
035        {
036            if (value instanceof Reference)
037            {
038                OutgoingReferences references = new OutgoingReferences();
039                List<String> refValues = Collections.singletonList(((Reference) value).getValue());
040                references.put(((Reference) value).getType(), refValues);
041                return references;
042            }
043            else if (value instanceof Reference[])
044            {
045                OutgoingReferences references = new OutgoingReferences();
046                for (Reference singleValue : (Reference[]) value)
047                {
048                    List<String> values;
049                    if (references.containsKey(singleValue.getType()))
050                    {
051                        values = references.get(singleValue.getType());
052                    }
053                    else
054                    {
055                        values = new ArrayList<>();
056                    }
057                    values.add(singleValue.getValue());
058                    
059                    references.put(singleValue.getType(), values);
060                }
061                return references;
062            }
063            else
064            {
065                throw new IllegalArgumentException("Try to get outgoing references of the non reference value '" + value + "'");
066            }
067        }
068        else
069        {
070            return OutgoingReferences.EMPTY;
071        }
072    }
073}