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 javax.persistence.EntityManager;
025
026 import org.granite.tide.TidePersistenceManager;
027 import org.jboss.seam.Component;
028 import org.jboss.seam.Component.BijectedAttribute;
029 import org.jboss.seam.annotations.In;
030 import org.jboss.seam.framework.PersistenceController;
031
032
033 /**
034 * Factory for creating the correct ITidePersistenceManager based on the
035 * persistence strategy passed in. Supported types are
036 * EntityManager,Session, EntityQuery, EntityHome, HibernateEntityHome and a
037 * injected(@In) EntityManager or HibernateSession
038 * @author CIngram
039 */
040 public class TidePersistenceFactory {
041
042
043 /**
044 * Create the ITidePersistenceManager. Supported types are
045 * EntityManager,Session, EntityQuery, EntityHome, HibernateEntityHome and a
046 * injected(@In) EntityManager or HibernateSession
047 *
048 * @param component
049 * @param persistenceType
050 * @return a ITidePersistenceManager.
051 */
052 @SuppressWarnings({ "unchecked", "rawtypes" })
053 public static TidePersistenceManager createTidePersistence(Component component, Object persistenceType) {
054 if (persistenceType instanceof EntityManager){
055 return createTidePersistence(component, (EntityManager)persistenceType);
056 } else if (persistenceType instanceof PersistenceController) {
057 return createTidePersistence(component, (PersistenceController)persistenceType);
058 } else if (persistenceType instanceof BijectedAttribute) {
059 return createTidePersistence(component, ((BijectedAttribute<In>)persistenceType));
060 }
061
062 return null;
063 }
064
065
066 /**
067 * Create a ITideInterceptor for a EntityManager.
068 *
069 * @param component
070 * @param persistenceType
071 * @return a ITidePersistenceManager.
072 */
073 public static TidePersistenceManager createTidePersistence(Component component, EntityManager persistenceType) {
074 return new PersistenceContextManager(persistenceType);
075 }
076
077 /**
078 * Create ITidePersistenceManager for a PersistenceController
079 *
080 * @param component
081 * @param controller
082 * @return a ITidePersistenceManager.
083 */
084 public static TidePersistenceManager createTidePersistence(Component component, PersistenceController<?> controller) {
085 String controllerName = component.getName();
086 if (controller.getPersistenceContext() instanceof EntityManager)
087 return new PersistenceControllerManager(controllerName);
088 return null;
089 }
090
091 /**
092 * Create a ITidePersistenceManager for a injected attribute(@In).
093 * Supported Types are EntityManager or Session.
094 *
095 * @param component
096 * @param att
097 * @return a ITidePersistenceManager.
098 */
099 public static TidePersistenceManager createTidePersistence(Component component, BijectedAttribute<In> att) {
100 if (att.getType() == EntityManager.class) {
101 return new SeamEntityManager(att.getName());
102 }
103 return null;
104 }
105 }