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

   1 /**
   2 * Copyright (C) 2009 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 org.apache.log4j.Logger;
  13 import org.hibernate.HibernateException;
  14 import org.hibernate.event.SaveOrUpdateEvent;
  15 import org.hibernate.event.SaveOrUpdateEventListener;
  16 import org.joda.time.DateTime;
  17 import org.springframework.security.Authentication;
  18 import org.springframework.security.context.SecurityContextHolder;
  19
  20 import eu.etaxonomy.cdm.model.common.User;
  21 import eu.etaxonomy.cdm.model.common.VersionableEntity;
  22
  23 public class UpdateEntityListener implements SaveOrUpdateEventListener {
  24         private static final long serialVersionUID = -3295612929556041686L;
  25         @SuppressWarnings("unused")
  26         private static final Logger logger = Logger.getLogger(UpdateEntityListener.class);
  27
  28         public void onSaveOrUpdate(SaveOrUpdateEvent event)     throws HibernateException {
  29                 Object entity = event.getObject();
  30                 if(entity != null && VersionableEntity.class.isAssignableFrom(entity.getClass())) {
  31                         VersionableEntity versionableEntity = (VersionableEntity)entity;
  32                         versionableEntity.setUpdated(new DateTime());
  33                         Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
  34                         if(authentication != null && authentication.getPrincipal() != null && authentication.getPrincipal() instanceof User) {
  35                           User user = (User)authentication.getPrincipal();
  36                           versionableEntity.setUpdatedBy(user);
  37                         }
  38                 }
  39         }
  40 }