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
021 package org.granite.tide.seam.lazy;
022
023 import javax.persistence.EntityManager;
024
025 import org.granite.tide.TidePersistenceManager;
026 import org.jboss.seam.Component;
027 import org.jboss.seam.Component.BijectedAttribute;
028 import org.jboss.seam.annotations.In;
029 import org.jboss.seam.framework.PersistenceController;
030
031
032 /**
033 * Factory for creating the correct ITidePersistenceManager based on the
034 * persistence strategy passed in. Supported types are
035 * EntityManager,Session, EntityQuery, EntityHome, HibernateEntityHome and a
036 * injected(@In) EntityManager or HibernateSession
037 * @author CIngram
038 */
039 public class TidePersistenceFactory {
040
041
042 /**
043 * Create the ITidePersistenceManager. Supported types are
044 * EntityManager,Session, EntityQuery, EntityHome, HibernateEntityHome and a
045 * injected(@In) EntityManager or HibernateSession
046 *
047 * @param component
048 * @param persistenceType
049 * @return a ITidePersistenceManager.
050 */
051 @SuppressWarnings({ "unchecked", "rawtypes" })
052 public static TidePersistenceManager createTidePersistence(Component component, Object persistenceType) {
053 if (persistenceType instanceof EntityManager){
054 return createTidePersistence(component, (EntityManager)persistenceType);
055 } else if (persistenceType instanceof PersistenceController) {
056 return createTidePersistence(component, (PersistenceController)persistenceType);
057 } else if (persistenceType instanceof BijectedAttribute) {
058 return createTidePersistence(component, ((BijectedAttribute<In>)persistenceType));
059 }
060
061 return null;
062 }
063
064
065 /**
066 * Create a ITideInterceptor for a EntityManager.
067 *
068 * @param component
069 * @param persistenceType
070 * @return a ITidePersistenceManager.
071 */
072 public static TidePersistenceManager createTidePersistence(Component component, EntityManager persistenceType) {
073 return new PersistenceContextManager(persistenceType);
074 }
075
076 /**
077 * Create ITidePersistenceManager for a PersistenceController
078 *
079 * @param component
080 * @param controller
081 * @return a ITidePersistenceManager.
082 */
083 public static TidePersistenceManager createTidePersistence(Component component, PersistenceController<?> controller) {
084 String controllerName = component.getName();
085 if (controller.getPersistenceContext() instanceof EntityManager)
086 return new PersistenceControllerManager(controllerName);
087 return null;
088 }
089
090 /**
091 * Create a ITidePersistenceManager for a injected attribute(@In).
092 * Supported Types are EntityManager or Session.
093 *
094 * @param component
095 * @param att
096 * @return a ITidePersistenceManager.
097 */
098 public static TidePersistenceManager createTidePersistence(Component component, BijectedAttribute<In> att) {
099 if (att.getType() == EntityManager.class) {
100 return new SeamEntityManager(att.getName());
101 }
102 return null;
103 }
104 }