/*
    * Copyright 2008 The Kuali Foundation
    * 
    * Licensed under the Educational Community License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    * 
    * http://www.opensource.org/licenses/ecl2.php
    * 
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.kuali.ole.sys.businessobject;
  
  import java.sql.Timestamp;
  import java.util.Date;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.ole.sys.context.SpringContext;
  import org.kuali.rice.kim.api.identity.Person;
  import org.kuali.rice.krad.bo.PersistableBusinessObjectBase;
  import org.kuali.rice.krad.util.GlobalVariables;
  
  public abstract class TimestampedBusinessObjectBase extends PersistableBusinessObjectBase implements TimestampedBusinessObject {
      private static org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(TimestampedBusinessObjectBase.class);
  
      private Timestamp lastUpdate;
      private String lastUpdateUserId;
  
      /**
       * @see org.kuali.ole.sys.businessobject.TimestampedBusinessObject#getLastUpdate()
       */
      public Timestamp getLastUpdate() {
          return this.lastUpdate;
      }
  
      /**
       * @see org.kuali.ole.sys.businessobject.TimestampedBusinessObject#getLastUpdateUser()
       */
      public Person getLastUpdateUser() {
          Person user = null;
          if (StringUtils.isNotBlank(lastUpdateUserId)) {
              user = SpringContext.getBean(org.kuali.rice.kim.api.identity.PersonService.class).getPersonByPrincipalName(lastUpdateUserId);
          }
  
          return user;
      }
  
      /**
       * @see org.kuali.ole.sys.businessobject.TimestampedBusinessObject#getLastUpdateUserId()
       */
      public String getLastUpdateUserId() {
          return this.lastUpdateUserId;
      }
  
      /**
       * @param lastUpdateUserId The lastUpdateUserId to set.
       */
      public void setLastUpdateUserId(String lastUpdateUserId) {
          this.lastUpdateUserId = lastUpdateUserId;
      }
  
      /**
       * @param lastUpdate The lastUpdate to set.
       */
      public void setLastUpdate(Timestamp lastUpdate) {
          this.lastUpdate = lastUpdate;
      }
  
      @Override protected void prePersist() {
          super.prePersist();
  
          lastUpdate = new Timestamp((new Date()).getTime());
          lastUpdateUserId = GlobalVariables.getUserSession().getPerson().getPrincipalName();
      }
  
      @Override protected void preUpdate() {
          super.preUpdate();
  
          lastUpdate = new Timestamp((new Date()).getTime());
          lastUpdateUserId = GlobalVariables.getUserSession().getPerson().getPrincipalName();
      }
  }