/**

  * Copyright 2005-2011 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.krad.dao.impl;

 import java.sql.Timestamp;

 import javax.persistence.EntityManager;

 import javax.persistence.PersistenceContext;

 import org.kuali.rice.core.framework.persistence.jpa.criteria.Criteria;

 import org.kuali.rice.core.framework.persistence.jpa.criteria.QueryByCriteria;

 import org.kuali.rice.core.framework.persistence.jpa.criteria.QueryByCriteria.QueryByCriteriaType;

 import org.kuali.rice.krad.bo.SessionDocument;

 import org.kuali.rice.krad.dao.SessionDocumentDao;

 import org.kuali.rice.krad.util.KRADPropertyConstants;

 public class SessionDocumentDaoJpa implements SessionDocumentDao {

     private static org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(SessionDocumentDaoJpa.class);

     @PersistenceContext

         private EntityManager entityManager;

     /**

      * @see org.kuali.rice.krad.dao.SessionDocumentDao#purgeAllSessionDocuments(java.sql.Timestamp)

      */

     public void purgeAllSessionDocuments(Timestamp expirationDate) {

         Criteria criteria = new Criteria(SessionDocument.class.getName());

         criteria.lt(KRADPropertyConstants.LAST_UPDATED_DATE, expirationDate);

         new QueryByCriteria(entityManager, criteria, QueryByCriteriaType.DELETE).toQuery().executeUpdate();

     }

     /**

      * @return the entityManager

      */

     public EntityManager getEntityManager() {

         return this.entityManager;

     }

     /**

      * @param entityManager the entityManager to set

      */

     public void setEntityManager(EntityManager entityManager) {

         this.entityManager = entityManager;

     }

 }