/*
    * Copyright 2006 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.module.purap.document.dataaccess.impl;
  
  import org.apache.ojb.broker.query.Criteria;
  import org.apache.ojb.broker.query.ReportQueryByCriteria;
  import org.kuali.ole.module.purap.PurapPropertyConstants;
  import org.kuali.ole.module.purap.document.RequisitionDocument;
  import org.kuali.ole.module.purap.document.dataaccess.RequisitionDao;
  import org.kuali.ole.sys.OLEPropertyConstants;
  import org.kuali.rice.core.framework.persistence.ojb.dao.PlatformAwareDaoBaseOjb;
  import org.springframework.transaction.annotation.Transactional;
  
  import java.util.List;
  
  /**
   * OJB implementation of RequisitionDao.
   */
  @Transactional
  public class RequisitionDaoOjb extends PlatformAwareDaoBaseOjb implements RequisitionDao {
      private static org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(RequisitionDaoOjb.class);
  
      /**
       * @see org.kuali.ole.module.purap.document.dataaccess.RequisitionDao#getDocumentNumberForRequisitionId(java.lang.Integer)
       */
      public String getDocumentNumberForRequisitionId(Integer id) {
          Criteria criteria = new Criteria();
          criteria.addEqualTo(PurapPropertyConstants.PURAP_DOC_ID, id);
  
          ReportQueryByCriteria rqbc = new ReportQueryByCriteria(RequisitionDocument.class, criteria);
          rqbc.addOrderByAscending(OLEPropertyConstants.DOCUMENT_NUMBER);
  
          List<RequisitionDocument> reqs = (List<RequisitionDocument>) getPersistenceBrokerTemplate().getCollectionByQuery(rqbc);
  
          if (reqs.isEmpty()) {
              return null;
          }
          if (reqs.size() > 1) {
              String errorMsg = "Expected single document number for given criteria but multiple (at least 2) were returned";
              LOG.error(errorMsg);
              throw new RuntimeException();
          } else {
              RequisitionDocument req = reqs.get(0);
              return req.getDocumentNumber();
          }
      }
  }