001/*
002 * (C) Copyright 2014 Nuxeo SA (http://nuxeo.com/) and others.
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 * Contributors:
017 *     <a href="mailto:grenard@nuxeo.com">Guillaume</a>
018 */
019package org.nuxeo.ecm.collections.core.listener;
020
021import org.apache.commons.logging.Log;
022import org.apache.commons.logging.LogFactory;
023import org.nuxeo.ecm.collections.api.CollectionManager;
024import org.nuxeo.ecm.core.api.DocumentModel;
025import org.nuxeo.ecm.core.api.event.DocumentEventTypes;
026import org.nuxeo.ecm.core.event.Event;
027import org.nuxeo.ecm.core.event.EventBundle;
028import org.nuxeo.ecm.core.event.EventContext;
029import org.nuxeo.ecm.core.event.PostCommitEventListener;
030import org.nuxeo.ecm.core.event.impl.DocumentEventContext;
031import org.nuxeo.runtime.api.Framework;
032
033/**
034 * Asynchronous event handler to update Collection of a removed CollectiomMember and CollectionMember of a Collection.
035 *
036 * @since 5.9.3
037 */
038public class RemovedCollectionListener implements PostCommitEventListener {
039
040    private static final Log log = LogFactory.getLog(RemovedCollectionListener.class);
041
042    @Override
043    public void handleEvent(EventBundle bundle) {
044        for (Event each : bundle) {
045            final EventContext ctx = each.getContext();
046            if (!(ctx instanceof DocumentEventContext)) {
047                continue;
048            }
049
050            final String eventId = each.getName();
051            if (!eventId.equals(DocumentEventTypes.DOCUMENT_REMOVED)) {
052                continue;
053            }
054
055            onEvent(each);
056        }
057    }
058
059    protected void onEvent(final Event event) {
060
061        final DocumentEventContext docCxt = (DocumentEventContext) event.getContext();
062
063        final DocumentModel doc = docCxt.getSourceDocument();
064
065        final CollectionManager collectionManager = Framework.getService(CollectionManager.class);
066
067        final boolean isCollectionRemoved = collectionManager.isCollection(doc);
068        final boolean isCollectionMemberRemoved = collectionManager.isCollected(doc);
069
070        if (isCollectionRemoved || isCollectionMemberRemoved) {
071            if (isCollectionRemoved) {
072                log.trace(String.format("Collection %s removed", doc.getId()));
073                collectionManager.processRemovedCollection(doc);
074            } else if (isCollectionMemberRemoved) {
075                log.trace(String.format("CollectionMember %s removed", doc.getId()));
076                collectionManager.processRemovedCollectionMember(doc);
077            }
078        }
079    }
080
081}