/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
package org.apache.stonehenge.stocktrader.mssql;
import java.sql.Connection;
import java.sql.SQLException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.stonehenge.stocktrader.dal.DAOException;
public class AbstractMSSQLDAO {
private static final Log logger = LogFactory.getLog(AbstractMSSQLDAO.class);
protected Connection sqlConnection;
private int previousTransactionIsolation;
public AbstractMSSQLDAO(Connection sqlConnection) throws DAOException {
this.sqlConnection = sqlConnection;
}
public void beginTransaction() throws DAOException {
logger.debug("AbstractMSSQLDAO.beginTransaction()");
try {
sqlConnection.setAutoCommit(false);
previousTransactionIsolation = sqlConnection.getTransactionIsolation();
sqlConnection.setTransactionIsolation(Connection.TRANSACTION_READ_COMMITTED);
} catch (SQLException e) {
e.printStackTrace();
logger.debug("", e);
throw new DAOException("Exception was thrown during the start of transaction", e);
}
}
public void commitTransaction() throws DAOException {
logger.debug("AbstractMSSQLDAO.commitTransaction()");
try {
sqlConnection.commit();
sqlConnection.setAutoCommit(true);
sqlConnection.setTransactionIsolation(previousTransactionIsolation);
} catch (SQLException e) {
throw new DAOException("Exception is thrown during the commit of transaction", e);
}
}
public void rollbackTransaction() throws DAOException {
logger.debug("AbstractMSSQLDAO.rollbackTransaction()");
try {
sqlConnection.rollback();
sqlConnection.setAutoCommit(true);
sqlConnection.setTransactionIsolation(previousTransactionIsolation);
} catch (SQLException e) {
throw new DAOException("Exception is thrown during the rollback of transaction", e);
}
}
public void close() throws DAOException {
try {
sqlConnection.close();
} catch (SQLException e) {
throw new DAOException("", e);
}
}
}