/*
    * Copyright 2007-2008 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.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;
      }
  
  
  }