/*
    * Copyright 2005-2008 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.rice.kns.dao.impl;
  
  import java.sql.Timestamp;
  
  import org.apache.log4j.Logger;
  import org.apache.ojb.broker.query.Criteria;
  import org.apache.ojb.broker.query.QueryFactory;
  import org.kuali.rice.kns.bo.SessionDocument;
  import org.kuali.rice.kns.dao.BusinessObjectDao;
  import org.kuali.rice.kns.dao.SessionDocumentDao;
  import org.kuali.rice.kns.util.KNSPropertyConstants;
  import org.springframework.dao.DataAccessException;
  
  /**
   * This class is the OJB implementation of the DocumentDao interface.
   */
  public class SessionDocumentDaoOjb extends PlatformAwareDaoBaseOjb implements SessionDocumentDao{
      private static Logger LOG = Logger.getLogger(SessionDocumentDaoOjb.class);
      private BusinessObjectDao businessObjectDao;
      
  
      public SessionDocumentDaoOjb() {
          super();
      }
      
      /*
       * (non-Javadoc)
       * 
       * @see org.kuali.rice.kns.dao.SessionDocumentDao#purgeAllSessionDocuments(java.sql.Timestamp)
       */
      public void purgeAllSessionDocuments(Timestamp expirationDate)throws DataAccessException {
      	Criteria criteria = new Criteria();
  		criteria.addLessThan(KNSPropertyConstants.LAST_UPDATED_DATE, expirationDate);
  		 getPersistenceBrokerTemplate().deleteByQuery(QueryFactory.newQuery(SessionDocument.class, criteria));
  		 //getPersistenceBrokerTemplate().clearCache();
  	        
      }
  
   
  }