/*******************************************************************************
* Copyright (c) 2010 Robert "Unlogic" Olofsson (unlogic@unlogic.se).
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the GNU Lesser Public License v3
* which accompanies this distribution, and is available at
* http://www.gnu.org/licenses/lgpl-3.0-standalone.html
******************************************************************************/
package se.unlogic.standardutils.dao.querys;
import se.unlogic.standardutils.dao.BeanResultSetPopulator;
import se.unlogic.standardutils.db.DBUtils;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
public class ObjectQuery<ReturnType> extends PopulatedQuery<ReturnType> {
public ObjectQuery(Connection connection, boolean closeConnectionOnExit, String query, BeanResultSetPopulator<ReturnType> bp) throws SQLException {
super(connection, closeConnectionOnExit, query, bp);
}
public ObjectQuery(DataSource dataSource, boolean closeConnectionOnExit, String query, BeanResultSetPopulator<ReturnType> bp) throws SQLException {
super(dataSource, closeConnectionOnExit, query, bp);
}
public ReturnType executeQuery() throws SQLException {
ResultSet rs = null;
try {
// Send query to database and store results.
rs = pstmt.executeQuery();
if (rs.next()) {
return this.beanPopulator.populate(rs);
} else {
return null;
}
} catch (SQLException sqle) {
throw sqle;
} finally {
DBUtils.closeResultSet(rs);
DBUtils.closePreparedStatement(pstmt);
if (this.closeConnectionOnExit) {
DBUtils.closeConnection(connection);
}
this.closed = true;
}
}
}