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.seam.lazy;
023
024import java.io.Serializable;
025
026import org.hibernate.Session;
027import org.jboss.seam.Component;
028import org.jboss.seam.Entity;
029import 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 */
037public 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}