001/**
002 *   GRANITE DATA SERVICES
003 *   Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 *   This file is part of the Granite Data Services Platform.
006 *
007 *                               ***
008 *
009 *   Community License: GPL 3.0
010 *
011 *   This file is free software: you can redistribute it and/or modify
012 *   it under the terms of the GNU General Public License as published
013 *   by the Free Software Foundation, either version 3 of the License,
014 *   or (at your option) any later version.
015 *
016 *   This file is distributed in the hope that it will be useful, but
017 *   WITHOUT ANY WARRANTY; without even the implied warranty of
018 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
019 *   GNU General Public License for more details.
020 *
021 *   You should have received a copy of the GNU General Public License
022 *   along with this program. If not, see <http://www.gnu.org/licenses/>.
023 *
024 *                               ***
025 *
026 *   Available Commercial License: GraniteDS SLA 1.0
027 *
028 *   This is the appropriate option if you are creating proprietary
029 *   applications and you are not prepared to distribute and share the
030 *   source code of your application under the GPL v3 license.
031 *
032 *   Please visit http://www.granitedataservices.com/license for more
033 *   details.
034 */
035package org.granite.client.tide.data;
036
037import java.util.Map;
038
039import org.granite.client.util.WeakIdentityHashMap;
040
041/**
042 * @author William DRAI
043 */
044public class PersistenceManager {
045    
046    private static Map<Object, EntityManager> entityManagersByEntity = new WeakIdentityHashMap<Object, EntityManager>(1000);
047    
048    public static EntityManager getEntityManager(Object object) {
049        return entityManagersByEntity.get(object);
050    }
051    
052    public static void setEntityManager(Object object, EntityManager entityManager) {
053        if (entityManager == null)
054            entityManagersByEntity.remove(object);
055        else
056                entityManagersByEntity.put(object, entityManager);
057    }
058    
059    public static void setPropertyValue(Object object, String propertyName, Object oldValue, Object newValue) {
060        if (newValue == oldValue)
061                return;
062        EntityManager entityManager = getEntityManager(object);
063        if (entityManager != null)
064                entityManager.getTrackingHandler().entityPropertyChangeHandler(object, propertyName, oldValue, newValue);
065    }
066
067}