001/*
002 * (C) Copyright 2014 Nuxeo SA (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl-2.1.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     <a href="mailto:grenard@nuxeo.com">Guillaume</a>
016 */
017package org.nuxeo.ecm.collections.core.listener;
018
019import org.apache.commons.logging.Log;
020import org.apache.commons.logging.LogFactory;
021import org.nuxeo.ecm.collections.api.CollectionManager;
022import org.nuxeo.ecm.core.api.DocumentModel;
023import org.nuxeo.ecm.core.api.event.DocumentEventTypes;
024import org.nuxeo.ecm.core.event.Event;
025import org.nuxeo.ecm.core.event.EventBundle;
026import org.nuxeo.ecm.core.event.EventContext;
027import org.nuxeo.ecm.core.event.PostCommitEventListener;
028import org.nuxeo.ecm.core.event.impl.DocumentEventContext;
029import org.nuxeo.runtime.api.Framework;
030
031/**
032 * Asynchronous event handler to update Collection of a removed CollectiomMember and CollectionMember of a Collection.
033 *
034 * @since 5.9.3
035 */
036public class RemovedCollectionListener implements PostCommitEventListener {
037
038    private static final Log log = LogFactory.getLog(RemovedCollectionListener.class);
039
040    @Override
041    public void handleEvent(EventBundle bundle) {
042        for (Event each : bundle) {
043            final EventContext ctx = each.getContext();
044            if (!(ctx instanceof DocumentEventContext)) {
045                continue;
046            }
047
048            final String eventId = each.getName();
049            if (!eventId.equals(DocumentEventTypes.DOCUMENT_REMOVED)) {
050                continue;
051            }
052
053            onEvent(each);
054        }
055    }
056
057    protected void onEvent(final Event event) {
058
059        final DocumentEventContext docCxt = (DocumentEventContext) event.getContext();
060
061        final DocumentModel doc = docCxt.getSourceDocument();
062
063        final CollectionManager collectionManager = Framework.getLocalService(CollectionManager.class);
064
065        final boolean isCollectionRemoved = collectionManager.isCollection(doc);
066        final boolean isCollectionMemberRemoved = collectionManager.isCollected(doc);
067
068        if (isCollectionRemoved || isCollectionMemberRemoved) {
069            if (isCollectionRemoved) {
070                log.trace(String.format("Collection %s removed", doc.getId()));
071                collectionManager.processRemovedCollection(doc);
072            } else if (isCollectionMemberRemoved) {
073                log.trace(String.format("CollectionMember %s removed", doc.getId()));
074                collectionManager.processRemovedCollectionMember(doc);
075            }
076        }
077    }
078
079}