package org.apache.ojb.broker.accesslayer;

 /* Copyright 2002-2005 The Apache Software Foundation

  *

  * Licensed under the Apache 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.apache.org/licenses/LICENSE-2.0

  *

  * 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.

  */

 import java.sql.ResultSetMetaData;

 import java.sql.SQLException;

 import org.apache.ojb.broker.PersistenceBrokerException;

 import org.apache.ojb.broker.core.PersistenceBrokerImpl;

 import org.apache.ojb.broker.metadata.JdbcTypesHelper;

 /**

  * ReporQueryRsIterator based on SQL-Statement

  *

  * @author <a href="mailto:jbraeuchi@hotmail.com">Jakob Braeuchi</a>

  * @version $Id: SqlBasedReportQueryRsIterator.java,v 1.1 2007-08-24 22:17:30 ewestfal Exp $

  */

 public class SqlBasedReportQueryRsIterator extends SqlBasedRsIterator

 {

     private ResultSetMetaData rsMetaData;

     private int columnCount;

     /**

      * SqlBasedRsIterator constructor.

      */

     public SqlBasedReportQueryRsIterator(RsQueryObject queryObject, PersistenceBrokerImpl broker)

             throws PersistenceBrokerException

     {

         super(queryObject, broker);

         try

         {

             rsMetaData = getRsAndStmt().m_rs.getMetaData();

             columnCount = rsMetaData.getColumnCount();

         }

         catch (SQLException e)

         {

             throw new PersistenceBrokerException(e);

         }

     }

     /**

      * returns an Object[] representing the columns of the current ResultSet row.

      * There is no OJB object materialization, Proxy generation etc. involved

      * to maximize performance.

      */

     protected Object getObjectFromResultSet() throws PersistenceBrokerException

     {

         Object[] result = new Object[columnCount];

         for (int i = 0; i < columnCount; i++)

         {

             try

             {

                 int jdbcType = rsMetaData.getColumnType(i + 1);

                 Object item = JdbcTypesHelper.getObjectFromColumn(getRsAndStmt().m_rs, new Integer(jdbcType), i + 1);

                 result[i] = item;

             }

             catch (SQLException e)

             {

                 throw new PersistenceBrokerException(e);

             }

         }

         return result;

     }

 }