// GreenPOS is a point of sales application designed for touch screens.
// Copyright (C) 2007-2009 Openbravo, S.L.
// http://code.google.com/p/openbravocustom/
//
// This file is part of GreenPOS.
//
// GreenPOS is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GreenPOS is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with GreenPOS. If not, see <http://www.gnu.org/licenses/>.
package com.openbravo.data.loader;
import java.sql.SQLException;
import com.openbravo.basic.BasicException;
/**
*
* @author adrianromero
* Created on 26 de febrero de 2007, 21:50
*
*/
public abstract class Transaction<T> {
private Session s;
/** Creates a new instance of Transaction */
public Transaction(Session s) {
this.s = s;
}
public final T execute() throws BasicException {
if (s.isTransaction()) {
return transact();
} else {
try {
try {
s.begin();
T result = transact();
s.commit();
return result;
} catch (BasicException e) {
s.rollback();
throw e;
}
} catch (SQLException eSQL) {
throw new BasicException("Transaction error", eSQL);
}
}
}
protected abstract T transact() throws BasicException;
}