001/*
002 *  Copyright 2011 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.odf.translation;
017
018import java.util.HashMap;
019import java.util.Map;
020
021import org.apache.commons.lang.StringUtils;
022
023import org.ametys.cms.repository.Content;
024import org.ametys.cms.repository.ModifiableContent;
025import org.ametys.plugins.repository.metadata.CompositeMetadata;
026import org.ametys.plugins.repository.metadata.ModifiableCompositeMetadata;
027import org.ametys.plugins.repository.metadata.UnknownMetadataException;
028
029/**
030 * Translation helper: get and set translations for a content.
031 */
032public final class TranslationHelper
033{
034
035    /** The translations metadata name. */
036    public static final String TRANSLATIONS_METADATA = "translations";
037    
038    private TranslationHelper()
039    {
040        // Hide the default constructor.
041    }
042    
043    /**
044     * Get the translations of a content.
045     * @param content the Content.
046     * @return the translations as a Map of language -> content ID.
047     */
048    public static Map<String, String> getTranslations(Content content)
049    {
050        Map<String, String> translations = new HashMap<>();
051        
052        try
053        {
054            CompositeMetadata translationsMeta = content.getMetadataHolder().getCompositeMetadata(TRANSLATIONS_METADATA);
055            for (String language : translationsMeta.getMetadataNames())
056            {
057                String contentId = translationsMeta.getString(language, "");
058                if (StringUtils.isNotBlank(contentId))
059                {
060                    translations.put(language, contentId);
061                }
062            }
063        }
064        catch (UnknownMetadataException e)
065        {
066            // Ignore, just return an empty map.
067        }
068        
069        return translations;
070    }
071    
072    /**
073     * Set the translations on a content.
074     * @param content the Content.
075     * @param translations the translations to set, as a Map of language -&gt; content ID.
076     */
077    public static void setTranslations(ModifiableContent content, Map<String, String> translations)
078    {
079        ModifiableCompositeMetadata translationsMeta = content.getMetadataHolder().getCompositeMetadata(TRANSLATIONS_METADATA, true);
080        
081        for (String language : translationsMeta.getMetadataNames())
082        {
083            translationsMeta.removeMetadata(language);
084        }
085        
086        for (String language : translations.keySet())
087        {
088            String contentId = translations.get(language);
089            translationsMeta.setMetadata(language, contentId);
090            content.saveChanges();
091        }
092    }
093        
094}