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 * Granite Data Services is free software; you can redistribute it and/or
008 * modify it under the terms of the GNU Lesser General Public
009 * License as published by the Free Software Foundation; either
010 * version 2.1 of the License, or (at your option) any later version.
011 *
012 * Granite Data Services is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 * General Public License for more details.
016 *
017 * You should have received a copy of the GNU Lesser General Public
018 * License along with this library; if not, write to the Free Software
019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 * USA, or see <http://www.gnu.org/licenses/>.
021 */
022 package org.granite.hibernate;
023
024 import java.io.Serializable;
025
026 import javax.persistence.Entity;
027
028 import org.granite.logging.Logger;
029 import org.granite.messaging.amf.io.util.DefaultClassGetter;
030 import org.granite.util.TypeUtil;
031 import org.hibernate.Hibernate;
032 import org.hibernate.proxy.HibernateProxy;
033 import org.hibernate.proxy.LazyInitializer;
034
035 /**
036 * @author Franck WOLFF
037 */
038 public class HibernateClassGetter extends DefaultClassGetter {
039
040 private final static Logger log = Logger.getLogger(HibernateClassGetter.class);
041
042 @Override
043 public Class<?> getClass(Object o) {
044
045 if (o instanceof HibernateProxy) {
046 HibernateProxy proxy = (HibernateProxy)o;
047 LazyInitializer initializer = proxy.getHibernateLazyInitializer();
048
049 String className = (
050 initializer.isUninitialized() ?
051 initializer.getEntityName() :
052 initializer.getImplementation().getClass().getName()
053 );
054
055 if (className != null && className.length() > 0) {
056 try {
057 return TypeUtil.forName(className);
058 } catch (Exception e) {
059 log.warn(e, "Could not get class with initializer: %s for: %s", initializer.getClass().getName(), className);
060 }
061 }
062 // fallback...
063 return initializer.getPersistentClass();
064 }
065
066 return super.getClass(o);
067 }
068
069 @Override
070 public boolean isEntity(Object o) {
071 return o.getClass().isAnnotationPresent(Entity.class);
072 }
073
074 @Override
075 public Serializable getIdentifier(Object o) {
076 if (o instanceof HibernateProxy)
077 return ((HibernateProxy)o).getHibernateLazyInitializer().getIdentifier();
078 return null;
079 }
080
081 @Override
082 public boolean isInitialized(Object owner, String propertyName, Object propertyValue) {
083 return Hibernate.isInitialized(propertyValue);
084 }
085
086 @Override
087 public void initialize(Object owner, String propertyName, Object propertyValue) {
088 Hibernate.initialize(propertyValue);
089 }
090 }