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.hibernate4;
023
024 import java.io.IOException;
025 import java.io.ObjectInput;
026 import java.io.Serializable;
027 import java.util.Collections;
028 import java.util.List;
029 import java.util.concurrent.ConcurrentHashMap;
030
031 import org.granite.messaging.amf.io.util.instantiator.AbstractInstantiator;
032 import org.hibernate.proxy.HibernateProxy;
033
034 /**
035 * @author Franck WOLFF
036 */
037 public class HibernateProxyInstantiator extends AbstractInstantiator<HibernateProxy> {
038
039 private static final long serialVersionUID = 1L;
040
041 private final ConcurrentHashMap<String, ProxyFactory> proxyFactories;
042 private final String detachedState;
043 private Serializable id;
044
045 public HibernateProxyInstantiator(ConcurrentHashMap<String, ProxyFactory> proxyFactories, String detachedState) {
046 if (detachedState == null)
047 throw new IllegalStateException("Cannot create Hibernate proxy without detachedState");
048 this.proxyFactories = proxyFactories;
049 this.detachedState = detachedState;
050 }
051
052 public void readId(ObjectInput in) throws IOException, ClassNotFoundException {
053 this.id = (Serializable)in.readObject();
054 }
055
056 protected Serializable getId() {
057 return id;
058 }
059
060 @Override
061 public List<String> getOrderedFieldNames() {
062 return Collections.emptyList();
063 }
064
065 @Override
066 public HibernateProxy newInstance() throws IOException, ClassNotFoundException, InstantiationException {
067 final String[] tokens = detachedState.split("\\Q:\\E", -1);
068
069 ProxyFactory factory = proxyFactories.get(tokens[0]);
070 if (factory == null) {
071 factory = newProxyFactory(tokens[0]);
072 ProxyFactory previousFactory = proxyFactories.putIfAbsent(tokens[0], factory);
073 if (previousFactory != null)
074 factory = previousFactory;
075 }
076
077 return factory.getProxyInstance(tokens[1], tokens[2], id);
078 }
079
080 protected ProxyFactory newProxyFactory(String initializerClassName) {
081 return new ProxyFactory(initializerClassName);
082 }
083 }