cdmlib-persistence/src/main/java/eu/etaxonomy/cdm/persistence/hibernate/CdmDeleteListener.java

   1 /**
   2 * Copyright (C) 2007 EDIT
   3 * European Distributed Institute of Taxonomy
   4 * http://www.e-taxonomy.eu
   5 *
   6 * The contents of this file are subject to the Mozilla Public License Version 1.1
   7 * See LICENSE.TXT at the top of this package for the full license terms.
   8 */
   9
  10 package eu.etaxonomy.cdm.persistence.hibernate;
  11
  12 import java.util.Set;
  13
  14 import org.apache.log4j.Logger;
  15 import org.hibernate.HibernateException;
  16 import org.hibernate.event.spi.DeleteEvent;
  17 import org.hibernate.event.spi.DeleteEventListener;
  18
  19 import eu.etaxonomy.cdm.model.common.RelationshipBase;
  20
  21 /**
  22  * @author a.mueller
  23  * @since 04.03.2009
  24  */
  25 public class CdmDeleteListener implements DeleteEventListener {
  26
  27     private static final long serialVersionUID = -5511287200489449838L;
  28     protected static final Logger logger = Logger.getLogger(CdmDeleteListener.class);
  29
  30     @Override
  31     public void onDelete(DeleteEvent event) throws HibernateException {
  32         Object entity = event.getObject();
  33         if(entity != null && RelationshipBase.class.isAssignableFrom(entity.getClass())) {
  34             logger.info("Deleting " + entity);
  35             deleteRelationship(event, entity);
  36         }
  37     }
  38
  39     @Override
  40     public void onDelete(DeleteEvent event, Set transientEntities)throws HibernateException {
  41         Object entity = event.getObject();
  42         if(entity != null && RelationshipBase.class.isAssignableFrom(entity.getClass())) {
  43             logger.info("Deleting " + entity);
  44             deleteRelationship(event, entity);
  45         }
  46     }
  47
  48     /**
  49      * @param event
  50      * @param entity
  51      */
  52      private void deleteRelationship(DeleteEvent event, Object entity) {
  53         RelationshipBase relationshipEntity = (RelationshipBase)entity;
  54       /*  if (relationshipEntity.isRemoved()){
  55             Set<IRelated> deletedObjects = relationshipEntity.getDeletedObjects();
  56             for (IRelated rel : deletedObjects){
  57                 if (rel != null){
  58                     logger.info("Updating related entity " + rel);
  59                     Object o = CdmBase.deproxy(rel, CdmBase.class);
  60                     EntityEntry entry = event.getSession().getPersistenceContext().getEntry(o);
  61                     if (entry == null){
  62 //                                              System.out.println();
  63                     }
  64                     if (!entry.getStatus().equals(Status.DELETED)){
  65                         event.getSession().update(rel);
  66                     }
  67                 }
  68             }
  69         }*/
  70     }
  71 }