/*
    * Copyright 2005-2009 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.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  
  import org.apache.ojb.broker.query.Criteria;
  import org.apache.ojb.broker.query.QueryFactory;
  import org.apache.ojb.broker.query.ReportQueryByCriteria;
  import org.kuali.ole.gl.businessobject.BalanceHistory;
  import org.kuali.ole.gl.dataaccess.LedgerBalanceHistoryBalancingDao;
  import org.kuali.ole.sys.OLEPropertyConstants;
  import org.kuali.rice.core.framework.persistence.ojb.dao.PlatformAwareDaoBaseOjb;
  
  /**
   * An OJB implementation of EntryHistoryDao
   */
  public class BalanceHistoryDaoOjb extends PlatformAwareDaoBaseOjb implements LedgerBalanceHistoryBalancingDao {
      private static org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(BalanceHistoryDaoOjb.class);
      
      /**
       * @see org.kuali.ole.gl.dataaccess.LedgerBalanceHistoryBalancingDao#findDistinctFiscalYears()
       */
      public List<Integer> findDistinctFiscalYears() {
          Criteria crit = new Criteria();
          ReportQueryByCriteria q = QueryFactory.newReportQuery(BalanceHistory.class, crit);
          q.setAttributes(new String[] { OLEPropertyConstants.UNIVERSITY_FISCAL_YEAR });
          q.setDistinct(true);
  
          Iterator<Object[]> years = getPersistenceBrokerTemplate().getReportQueryIteratorByQuery(q);
          List<Integer> yearList = new ArrayList<Integer>();
          
          while (years != null && years.hasNext()) {
              Object[] year = years.next();
              yearList.add(new Integer(year[0].toString()));
          }
          
          return yearList;
      }
  }