001    /*
002      GRANITE DATA SERVICES
003      Copyright (C) 2012 GRANITE DATA SERVICES S.A.S.
004    
005      This file is part of Granite Data Services.
006    
007      Granite Data Services is free software; you can redistribute it and/or modify
008      it under the terms of the GNU Library General Public License as published by
009      the Free Software Foundation; either version 2 of the License, or (at your
010      option) any later version.
011    
012      Granite Data Services is distributed in the hope that it will be useful, but
013      WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014      FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015      for more details.
016    
017      You should have received a copy of the GNU Library General Public License
018      along with this library; if not, see <http://www.gnu.org/licenses/>.
019    */
020    
021    package org.granite.client.tide.data;
022    
023    import java.util.WeakHashMap;
024    
025    /**
026     * @author William DRAI
027     */
028    public class PersistenceManager {
029        
030        private static WeakHashMap<Object, EntityManager> entityManagersByEntity = new WeakHashMap<Object, EntityManager>(1000);
031        
032        public static EntityManager getEntityManager(Object object) {
033            return entityManagersByEntity.get(object);
034        }
035        
036        public static void setEntityManager(Object object, EntityManager entityManager) {
037            if (entityManager == null)
038                entityManagersByEntity.remove(object);
039            else
040                    entityManagersByEntity.put(object, entityManager);
041        }
042    
043    }