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 */
022package org.granite.tide.spring;
023
024import javax.persistence.EntityManager;
025
026import org.granite.logging.Logger;
027import org.granite.tide.data.JPAPersistenceAdapter;
028import org.granite.tide.data.TidePersistenceAdapter;
029import org.granite.tide.data.TidePersistenceAdapterFactory;
030import org.granite.util.TypeUtil;
031import org.springframework.orm.hibernate3.HibernateTransactionManager;
032import org.springframework.orm.jpa.EntityManagerFactoryUtils;
033import org.springframework.orm.jpa.JpaTransactionManager;
034import org.springframework.transaction.PlatformTransactionManager;
035
036
037/**
038 *      Implementation of TidePersistenceAdapterFactory for Spring
039 *  Detects the platform transaction manager and creates Hibernate or JPA persistence adapters accordingly
040 *  
041 *      @author William Drai
042 */
043public class SpringPersistenceAdapterFactory implements TidePersistenceAdapterFactory {
044    
045        private static final Logger log = Logger.getLogger(SpringPersistenceAdapterFactory.class);
046        
047        private final PlatformTransactionManager transactionManager;
048        
049        public SpringPersistenceAdapterFactory(PlatformTransactionManager transactionManager) {
050                this.transactionManager = transactionManager;
051        }
052        
053        public TidePersistenceAdapter newPersistenceAdapter() {
054                if (transactionManager instanceof HibernateTransactionManager) {
055                        try {
056                                // Use reflection to avoid runtime dependency on Hibernate
057                                Object sf = transactionManager.getClass().getMethod("getSessionFactory").invoke(transactionManager);
058                                Class<?> sfClass = TypeUtil.forName("org.hibernate.SessionFactory");
059                                return (TidePersistenceAdapter)TypeUtil.newInstance("org.granite.tide.hibernate.HibernatePersistenceAdapter",
060                                                new Class<?>[] { sfClass }, new Object[] { sf });
061                        }
062                        catch (Exception e) {
063                                log.error("Could not setup Hibernate persistence adapter, incremental changes disabled. Check that granite-hibernate.jar is present in the classpath.");
064                                return null;
065                        }
066                }
067                else if (transactionManager instanceof JpaTransactionManager) {
068                        EntityManager em = EntityManagerFactoryUtils.getTransactionalEntityManager(((JpaTransactionManager)transactionManager).getEntityManagerFactory());
069                        return new JPAPersistenceAdapter(em);
070                }
071                
072                log.error("Unsupported Spring TransactionManager, incremental change s disabled. You may ");
073                return null;
074        }
075}