001/*
002 * (C) Copyright 2012 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.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 *     Thomas Roger (troger@nuxeo.com)
016 */
017
018package org.nuxeo.ecm.activity;
019
020import java.util.ArrayList;
021import java.util.Collections;
022import java.util.Comparator;
023import java.util.HashMap;
024import java.util.List;
025import java.util.Map;
026
027import org.nuxeo.runtime.model.ContributionFragmentRegistry;
028
029/**
030 * Registry for activity upgraders, handling merge of registered
031 * {@link org.nuxeo.ecm.activity.ActivityUpgraderDescriptor} elements.
032 *
033 * @author <a href="mailto:troger@nuxeo.com">Thomas Roger</a>
034 * @since 5.7
035 */
036public class ActivityUpgraderRegistry extends ContributionFragmentRegistry<ActivityUpgraderDescriptor> {
037
038    protected Map<String, ActivityUpgrader> activityUpgraders = new HashMap<String, ActivityUpgrader>();
039
040    public List<ActivityUpgrader> getOrderedActivityUpgraders() {
041        List<ActivityUpgrader> upgraders = new ArrayList<ActivityUpgrader>(activityUpgraders.values());
042        Collections.sort(upgraders, new Comparator<ActivityUpgrader>() {
043            @Override
044            public int compare(ActivityUpgrader o1, ActivityUpgrader o2) {
045                return o1.getOrder() - o2.getOrder();
046            }
047        });
048        return upgraders;
049    }
050
051    @Override
052    public String getContributionId(ActivityUpgraderDescriptor contrib) {
053        return contrib.getName();
054    }
055
056    @Override
057    public void contributionUpdated(String id, ActivityUpgraderDescriptor contrib,
058            ActivityUpgraderDescriptor newOrigContrib) {
059        activityUpgraders.put(id, contrib.getActivityUpgrader());
060    }
061
062    @Override
063    public void contributionRemoved(String id, ActivityUpgraderDescriptor origContrib) {
064        activityUpgraders.remove(id);
065    }
066
067    @Override
068    public ActivityUpgraderDescriptor clone(ActivityUpgraderDescriptor orig) {
069        return orig.clone();
070    }
071
072    @Override
073    public void merge(ActivityUpgraderDescriptor src, ActivityUpgraderDescriptor dst) {
074        Class<? extends ActivityUpgrader> clazz = src.getActivityUpgraderClass();
075        if (clazz != null) {
076            dst.setActivityUpgraderClass(clazz);
077        }
078        dst.setOrder(src.getOrder());
079
080        boolean enabled = src.isEnabled();
081        if (enabled != dst.isEnabled()) {
082            dst.setEnabled(enabled);
083        }
084    }
085
086}