/*

  * 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.core.framework.persistence.ojb.dao.PlatformAwareDaoBaseOjb;

 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();

     }

 }