001/*
002 *  Copyright 2016 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.plugins.contentio.synchronize;
017
018import java.util.ArrayList;
019import java.util.Collection;
020import java.util.List;
021import java.util.Set;
022import java.util.stream.Collectors;
023
024import javax.jcr.Node;
025import javax.jcr.RepositoryException;
026import javax.jcr.Value;
027
028import org.apache.avalon.framework.service.ServiceException;
029import org.apache.avalon.framework.service.ServiceManager;
030import org.apache.avalon.framework.service.Serviceable;
031
032import org.ametys.cms.content.external.ExternalizableMetadataProvider;
033import org.ametys.cms.repository.Content;
034import org.ametys.cms.repository.DefaultContent;
035import org.ametys.plugins.repository.AmetysRepositoryException;
036import org.ametys.runtime.plugin.component.AbstractLogEnabled;
037
038/**
039 * {@link ExternalizableMetadataProvider} based on a {@link SynchronizableContentsCollection}
040 */
041public class SynchronizableContentsCollectionMetadataProvider extends AbstractLogEnabled implements ExternalizableMetadataProvider, Serviceable
042{
043    /** The DAO for synchronizable contents collections */
044    protected SynchronizableContentsCollectionDAO _synchronizableContentsCollectionDAO;
045
046    @Override
047    public void service(ServiceManager manager) throws ServiceException
048    {
049        _synchronizableContentsCollectionDAO = (SynchronizableContentsCollectionDAO) manager.lookup(SynchronizableContentsCollectionDAO.ROLE);
050    }
051    
052    @Override
053    public Set<String> getExternalOnlyMetadata(Content content)
054    {
055        List<SynchronizableContentsCollection> collections = _getCollectionIds(content).stream()
056                .map(_synchronizableContentsCollectionDAO::getSynchronizableContentsCollection)
057                .collect(Collectors.toList());
058        
059        // Return the intersection of the no-synchronized metadata of each collection
060        Set<String> externalMetadata = collections.get(0).getExternalOnlyFields();
061        for (int i = 1; i < collections.size(); i++)
062        {
063            externalMetadata.retainAll(collections.get(i).getExternalOnlyFields());
064        }
065        
066        return externalMetadata;
067    }
068    
069    @Override
070    public Set<String> getExternalAndLocalMetadata(Content content)
071    {
072        return _getCollectionIds(content).stream()
073                .map(_synchronizableContentsCollectionDAO::getSynchronizableContentsCollection)
074                .map(col -> col.getLocalAndExternalFields())
075                .flatMap(Collection::stream)
076                .collect(Collectors.toSet());
077    }
078    
079    private List<String> _getCollectionIds(Content content) throws AmetysRepositoryException
080    {
081        List<String> collectionIds = new ArrayList<>();
082        
083        if (content instanceof DefaultContent)
084        {
085            try
086            {
087                Node node = ((DefaultContent) content).getNode();
088                if (node.hasProperty(SynchronizableContentsCollection.COLLECTION_ID_PROPERTY))
089                {
090                    Value[] values = node.getProperty(SynchronizableContentsCollection.COLLECTION_ID_PROPERTY).getValues();
091                    for (Value value : values)
092                    {
093                        collectionIds.add(value.getString());
094                    }
095                }
096            }
097            catch (RepositoryException e)
098            {
099                getLogger().error("Failed to get linked synchronizable collections for content " + content.getId(), e);
100                throw new AmetysRepositoryException("Failed to get linked synchronizable collections for content " + content.getId(), e);
101            }
102        }
103        
104        return collectionIds;
105    }
106}