/*
    * Copyright 2007 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.gl.dataaccess.impl;
  
  import java.math.BigDecimal;
  import java.sql.Date;
  import java.util.Iterator;
  
  import org.apache.ojb.broker.metadata.ClassDescriptor;
  import org.apache.ojb.broker.metadata.ClassNotPersistenceCapableException;
  import org.apache.ojb.broker.metadata.DescriptorRepository;
  import org.apache.ojb.broker.metadata.MetadataManager;
  import org.apache.ojb.broker.query.Criteria;
  import org.apache.ojb.broker.query.QueryByCriteria;
  import org.apache.ojb.broker.query.QueryFactory;
  import org.apache.ojb.broker.query.ReportQueryByCriteria;
  import org.kuali.ole.gl.businessobject.CollectorDetail;
  import org.kuali.ole.gl.dataaccess.CollectorDetailDao;
  import org.kuali.ole.sys.OLEPropertyConstants;
  import org.kuali.rice.core.framework.persistence.ojb.dao.PlatformAwareDaoBaseOjb;
  import org.kuali.rice.krad.exception.ClassNotPersistableException;
  
  /**
   * An OJB implementation of the CollectorDetailDao
   */
  public class CollectorDetailDaoOjb extends PlatformAwareDaoBaseOjb implements CollectorDetailDao {
      private static org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(CollectorDetailDaoOjb.class);
  
      private DescriptorRepository descriptorRepository;
  
      public CollectorDetailDaoOjb() {
          MetadataManager metadataManager = MetadataManager.getInstance();
          descriptorRepository = metadataManager.getGlobalRepository();
      }
  
      /**
       * Purge the table by year/chart.  Clears persistence broker template at the end to ensure OJB has to to DB again
       * to retrieve the post-purged state of the DB. 
       * 
       * @see org.kuali.ole.gl.dataaccess.CollectorDetailDao#purgeYearByChart(java.lang.String, int)
       */
      public void purgeYearByChart(String chartOfAccountsCode, int universityFiscalYear) {
          LOG.debug("purgeYearByChart() started");
  
          Criteria criteria = new Criteria();
          criteria.addEqualTo(OLEPropertyConstants.CHART_OF_ACCOUNTS_CODE, chartOfAccountsCode);
          criteria.addLessThan(OLEPropertyConstants.UNIVERSITY_FISCAL_YEAR, new Integer(universityFiscalYear));
          
          getPersistenceBrokerTemplate().deleteByQuery(new QueryByCriteria(CollectorDetail.class, criteria));
  
          // This is required because if any deleted items are in the cache, deleteByQuery doesn't
          // remove them from the cache so a future select will retrieve these deleted account balances from
          // the cache and return them. Clearing the cache forces OJB to go to the database again.
          getPersistenceBrokerTemplate().clearCache();
      }
  
      /**
       * Retrieves the DB table name that's mapped to instances of CollectorDetail by finding the class descriptor name from the
       * class descriptor respository 
       * @return the table name where collector details are saved to
       * @see org.kuali.ole.gl.dataaccess.CollectorDetailDao#retrieveCollectorDetailTableName()
       */
      public String retrieveCollectorDetailTableName() {
          ClassDescriptor classDescriptor = null;
          DescriptorRepository globalRepository = descriptorRepository;
          try {
              classDescriptor = globalRepository.getDescriptorFor(CollectorDetail.class);
          }
          catch (ClassNotPersistenceCapableException e) {
              throw new ClassNotPersistableException("class '" + CollectorDetail.class.getName() + "' is not persistable", e);
          }
  
          return classDescriptor.getFullTableName();
      }
  
  
      public Integer getMaxCreateSequence(Date date) {
          Criteria crit = new Criteria();
          crit.addEqualTo("CREATE_DT", date);
  
          ReportQueryByCriteria q = QueryFactory.newReportQuery(CollectorDetail.class, crit);
          q.setAttributes(new String[] { "max(transactionLedgerEntrySequenceNumber)" });
  
          Iterator<Object[]> iter = getPersistenceBrokerTemplate().getReportQueryIteratorByQuery(q);
          if (iter.hasNext()) {
              Object[] result = iter.next();
             if (result[0] != null) {
                 return new Integer(((BigDecimal)result[0]).intValue());
             }
         }
         return null;
     }
     
     
 }