001/*
002  GRANITE DATA SERVICES
003  Copyright (C) 2011 GRANITE DATA SERVICES S.A.S.
004
005  This file is part of Granite Data Services.
006
007  Granite Data Services is free software; you can redistribute it and/or modify
008  it under the terms of the GNU Library General Public License as published by
009  the Free Software Foundation; either version 2 of the License, or (at your
010  option) any later version.
011
012  Granite Data Services is distributed in the hope that it will be useful, but
013  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015  for more details.
016
017  You should have received a copy of the GNU Library General Public License
018  along with this library; if not, see <http://www.gnu.org/licenses/>.
019*/
020
021package org.granite.tide.seam.lazy;
022
023import java.io.Serializable;
024
025import org.hibernate.Session;
026import org.jboss.seam.Component;
027import org.jboss.seam.Entity;
028import org.jboss.seam.framework.PersistenceController;
029
030
031/**
032 * Manager responsible for looking up the EntityHome from the Seam context.
033 * @author cingram
034 *
035 */
036public class HibernatePersistenceControllerManager extends PersistenceContextManager {
037    
038    private String controllerName;  
039
040    public HibernatePersistenceControllerManager(String controllerName) {
041        this.controllerName = controllerName;
042    }
043    
044    /**
045     * Attach the passed in entity with the EntityManager stored 
046     * in the EntityHome object.
047     * @param entity
048     * @return the attached hibernate object
049     */
050    @Override
051    public Object fetchEntity(Object entity, String[] fetch) {
052        PersistenceController<?> controller = (PersistenceController<?>)Component.getInstance(controllerName);
053        Session session = (Session)controller.getPersistenceContext();
054        Serializable id = (Serializable)Entity.forClass(entity.getClass()).getIdentifier(entity);
055        if (id == null)
056            return null;
057        return session.get(entity.getClass(), id);
058    }
059
060}