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.tide.seam.lazy;
023    
024    import java.io.Serializable;
025    
026    import org.hibernate.Session;
027    import org.jboss.seam.Component;
028    import org.jboss.seam.Entity;
029    import org.jboss.seam.framework.PersistenceController;
030    
031    
032    /**
033     * Manager responsible for looking up the EntityHome from the Seam context.
034     * @author cingram
035     *
036     */
037    public class HibernatePersistenceControllerManager extends PersistenceContextManager {
038        
039        private String controllerName;  
040    
041        public HibernatePersistenceControllerManager(String controllerName) {
042            this.controllerName = controllerName;
043        }
044        
045        /**
046         * Attach the passed in entity with the EntityManager stored 
047         * in the EntityHome object.
048         * @param entity
049         * @return the attached hibernate object
050         */
051        @Override
052        public Object fetchEntity(Object entity, String[] fetch) {
053            PersistenceController<?> controller = (PersistenceController<?>)Component.getInstance(controllerName);
054            Session session = (Session)controller.getPersistenceContext();
055            Serializable id = (Serializable)Entity.forClass(entity.getClass()).getIdentifier(entity);
056            if (id == null)
057                return null;
058            return session.get(entity.getClass(), id);
059        }
060    
061    }