PersistenceManager.java

/**
 *   GRANITE DATA SERVICES
 *   Copyright (C) 2006-2015 GRANITE DATA SERVICES S.A.S.
 *
 *   This file is part of the Granite Data Services Platform.
 *
 *                               ***
 *
 *   Community License: GPL 3.0
 *
 *   This file is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published
 *   by the Free Software Foundation, either version 3 of the License,
 *   or (at your option) any later version.
 *
 *   This file is distributed in the hope that it will be useful, but
 *   WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 *                               ***
 *
 *   Available Commercial License: GraniteDS SLA 1.0
 *
 *   This is the appropriate option if you are creating proprietary
 *   applications and you are not prepared to distribute and share the
 *   source code of your application under the GPL v3 license.
 *
 *   Please visit http://www.granitedataservices.com/license for more
 *   details.
 */
package org.granite.client.tide.data;

import java.util.Map;

import org.granite.client.util.WeakIdentityHashMap;

/**
 * @author William DRAI
 */
public class PersistenceManager {
    
    private static Map<Object, EntityManager> entityManagersByEntity = new WeakIdentityHashMap<Object, EntityManager>(1000);
    
    public static EntityManager getEntityManager(Object object) {
        return entityManagersByEntity.get(object);
    }
    
    public static void setEntityManager(Object object, EntityManager entityManager) {
    	if (entityManager == null)
            entityManagersByEntity.remove(object);
    	else
    		entityManagersByEntity.put(object, entityManager);
    }
    
    public static void setPropertyValue(Object object, String propertyName, Object oldValue, Object newValue) {
    	if (newValue == oldValue)
    		return;
    	EntityManager entityManager = getEntityManager(object);
    	if (entityManager != null)
    		entityManager.getTrackingHandler().entityPropertyChangeHandler(object, propertyName, oldValue, newValue);
    }

}