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.hibernate;
022    
023    import java.io.Serializable;
024    
025    import org.hibernate.ObjectNotFoundException;
026    import org.hibernate.Session;
027    import org.hibernate.StaleObjectStateException;
028    import org.hibernate.StaleStateException;
029    
030    /**
031     * @author William DRAI
032     */
033    public class HibernateOptimisticLockException extends StaleStateException {
034    
035            private static final long serialVersionUID = 1L;
036    
037            private Object entity;
038            
039            public HibernateOptimisticLockException(String message, Throwable cause, Object entity) {
040                    super(message);
041                    this.entity = entity;
042            }
043            
044            public Object getEntity() {
045                    return entity;
046            }
047            
048            public static void rethrowOptimisticLockException(Session session, StaleObjectStateException sose) {
049                    Serializable identifier = sose.getIdentifier();
050                    if (identifier != null) {
051                            try {
052                                    Object entity = session.load(sose.getEntityName(), identifier);
053                                    if (entity instanceof Serializable) {
054                                            //avoid some user errors regarding boundary crossing
055                                            throw new HibernateOptimisticLockException(null, sose, entity);
056                                    }
057                            }
058                            catch (ObjectNotFoundException onfe) {
059                                    // Ignored, StaleStateException will be rethrown
060                            }
061                    }
062            }
063    }