/**
    * Copyright 2004-2012 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.hr.time.graceperiod.dao;
  
  import java.sql.Date;
  
  import org.apache.ojb.broker.query.Criteria;
  import org.apache.ojb.broker.query.Query;
  import org.apache.ojb.broker.query.QueryFactory;
  import org.apache.ojb.broker.query.ReportQueryByCriteria;
  import org.kuali.hr.time.graceperiod.rule.GracePeriodRule;
  import org.kuali.rice.core.framework.persistence.ojb.dao.PlatformAwareDaoBaseOjb;
  
  public class GracePeriodDaoImpl extends PlatformAwareDaoBaseOjb implements GracePeriodDao {
  	public GracePeriodRule getGracePeriodRule(Date asOfDate){
  		GracePeriodRule gracePeriodRule = null;
  		
  		Criteria root = new Criteria();
  		Criteria effdt = new Criteria();
  		Criteria timestamp = new Criteria();
  
  		// OJB's awesome sub query setup part 1
  		effdt.addLessOrEqualThan("effectiveDate", asOfDate);
  //		effdt.addEqualTo("active", true);
  		ReportQueryByCriteria effdtSubQuery = QueryFactory.newReportQuery(GracePeriodRule.class, effdt);
  		effdtSubQuery.setAttributes(new String[] { "max(effdt)" });
  
  		// OJB's awesome sub query setup part 2
  		timestamp.addEqualToField("effectiveDate", Criteria.PARENT_QUERY_PREFIX + "effectiveDate");
  //		timestamp.addEqualTo("active", true);
  		ReportQueryByCriteria timestampSubQuery = QueryFactory.newReportQuery(GracePeriodRule.class, timestamp);
  		timestampSubQuery.setAttributes(new String[] { "max(timestamp)" });
  
  		root.addEqualTo("effectiveDate", effdtSubQuery);
  		root.addEqualTo("timestamp", timestampSubQuery);
  
  		Criteria activeFilter = new Criteria(); // Inner Join For Activity
  		activeFilter.addEqualTo("active", true);
  		root.addAndCriteria(activeFilter);
  		
  		
  		Query query = QueryFactory.newQuery(GracePeriodRule.class, root);
  		Object obj = this.getPersistenceBrokerTemplate().getObjectByQuery(query);
  
  		if (obj != null) {
  			gracePeriodRule = (GracePeriodRule) obj;
  		}
  		
  		return gracePeriodRule;
  	}
  
  	@Override
  	public GracePeriodRule getGracePeriodRule(String tkGracePeriodId) {
  		Criteria crit = new Criteria();
  		crit.addEqualTo("tkGracePeriodRuleId", tkGracePeriodId);
  		
  		Query query = QueryFactory.newQuery(GracePeriodRule.class, crit);
  		return (GracePeriodRule)this.getPersistenceBrokerTemplate().getObjectByQuery(query);
  	}
  }