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/***************************************************************************
* Copyright (c) 2004 - 2010 Eike Stepper (Berlin, Germany) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Andre Dietisheim - initial API and implementation
* Eike Stepper - maintenance
**************************************************************************/
package org.eclipse.emf.cdo.common.internal.db;
import org.eclipse.net4j.db.DBUtil;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
/**
* @author Andre Dietisheim
*/
public abstract class AbstractQueryStatement<Result> extends AbstractDBAccessor
{
public AbstractQueryStatement()
{
}
public Result query(Connection connection) throws Exception
{
PreparedStatement preparedStatement = null;
try
{
preparedStatement = getPreparedStatement(connection);
ResultSet resultSet = preparedStatement.executeQuery();
connection.commit();
if (resultSet.next())
{
Result result = getResult(resultSet);
resultSet.close();
return result;
}
return null;
}
finally
{
DBUtil.close(preparedStatement);
}
}
protected abstract Result getResult(ResultSet resultSet) throws Exception;
}
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