/* GRANITE DATA SERVICES Copyright (C) 2012 GRANITE DATA SERVICES S.A.S. This file is part of Granite Data Services. Granite Data Services is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. Granite Data Services 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, see <http://www.gnu.org/licenses/>. */ 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); } }