001/*
002 * (C) Copyright 2016 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 *     Nuxeo
018 */
019
020package org.nuxeo.apidoc.listener;
021
022import static org.apache.commons.lang.BooleanUtils.isFalse;
023import static org.nuxeo.apidoc.snapshot.DistributionSnapshot.PROP_LATEST_FT;
024import static org.nuxeo.apidoc.snapshot.DistributionSnapshot.PROP_LATEST_LTS;
025import static org.nuxeo.apidoc.snapshot.DistributionSnapshot.TYPE_NAME;
026
027import java.util.Arrays;
028import java.util.List;
029
030import org.nuxeo.ecm.core.api.CoreSession;
031import org.nuxeo.ecm.core.api.DocumentModel;
032import org.nuxeo.ecm.core.event.Event;
033import org.nuxeo.ecm.core.event.EventListener;
034import org.nuxeo.ecm.core.event.impl.DocumentEventContext;
035
036/**
037 * Listener used to keep only one latestLTS, or latestFT When a Distribution is
038 * created or modified with the flag; it makes it atomic.
039 *
040 * @author <a href="mailto:ak@nuxeo.com">Arnaud Kervern</a>
041 * @since 8.3
042 */
043public class LatestDistributionsListener implements EventListener {
044    protected static final String DISTRIBUTION_QUERY = "Select * from %s where %s = 1";
045
046    @Override
047    public void handleEvent(Event event) {
048        if (!(event.getContext() instanceof DocumentEventContext)) {
049            return;
050        }
051
052        DocumentEventContext ctx = (DocumentEventContext) event.getContext();
053        DocumentModel srcDoc = ctx.getSourceDocument();
054        if (!TYPE_NAME.equals(srcDoc.getType())) {
055            return;
056        }
057
058        CoreSession session = ctx.getCoreSession();
059        List<String> flags = Arrays.asList(PROP_LATEST_FT, PROP_LATEST_LTS);
060        flags.forEach(flag -> {
061            if (isFalse((Boolean) srcDoc.getPropertyValue(flag))) {
062                return;
063            }
064
065            String query = String.format(DISTRIBUTION_QUERY, TYPE_NAME, flag);
066            session.query(query)
067                    .stream()
068                    .filter(doc -> srcDoc.getId() == null || !doc.getId().equals(srcDoc.getId()))
069                    .forEach(doc -> {
070                        doc.setPropertyValue(flag, false);
071                        session.saveDocument(doc);
072                    });
073        });
074    }
075
076}