138 lines
3.1 KiB
Java
138 lines
3.1 KiB
Java
/*
|
|
----
|
|
This file is part of SECONDO.
|
|
|
|
Copyright (C) 2004, University in Hagen, Department of Computer Science,
|
|
Database Systems for New Applications.
|
|
|
|
SECONDO 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 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
SECONDO 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 SECONDO; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
----
|
|
|
|
10-2013 Jasmine Ahmed:
|
|
Class taken from package viewer.update.CommandExecuter.
|
|
Added methods beginTransaction, commitTransaction, abortTransaction.
|
|
|
|
|
|
*/
|
|
package viewer.update2;
|
|
|
|
import sj.lang.*;
|
|
import gui.*;
|
|
;
|
|
|
|
/*
|
|
This class executes commands by sending them to SECONDO. The response-values of SECONDO are
|
|
afterwards stored in members of this class and can be asked for by other classes.
|
|
|
|
*/
|
|
public class CommandExecuter {
|
|
|
|
private UpdateInterface updateInterface = null;
|
|
private ListExpr resultList;
|
|
private IntByReference errorCode ;
|
|
private IntByReference errorPos ;
|
|
private StringBuffer errorMessage ;
|
|
|
|
public CommandExecuter (){
|
|
resultList = new ListExpr();
|
|
errorCode = new IntByReference(0);
|
|
errorPos = new IntByReference(0);
|
|
errorMessage = new StringBuffer();
|
|
}
|
|
|
|
public boolean executeCommand (String command, int commandLevel)
|
|
{
|
|
if (updateInterface == null)
|
|
{
|
|
updateInterface = MainWindow.getUpdateInterface();
|
|
}
|
|
// Executes the remote command.
|
|
if(updateInterface.isInitialized())
|
|
{
|
|
updateInterface.secondo(command, //Command to execute.
|
|
resultList, errorCode, errorPos, errorMessage);
|
|
boolean success = errorCode.value==0;
|
|
return success;
|
|
}
|
|
else
|
|
{
|
|
errorMessage = new StringBuffer("Connection to SECONDO lost!");
|
|
return false;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/*
|
|
Abort transaction
|
|
|
|
*/
|
|
public boolean abortTransaction()
|
|
{
|
|
return this.executeCommand("(abort transaction)", SecondoInterface.EXEC_COMMAND_LISTEXPR_SYNTAX);
|
|
}
|
|
|
|
|
|
/*
|
|
Begin transaction
|
|
|
|
*/
|
|
public boolean beginTransaction()
|
|
{
|
|
return this.executeCommand("(begin transaction)", SecondoInterface.EXEC_COMMAND_LISTEXPR_SYNTAX);
|
|
}
|
|
|
|
/*
|
|
Commit transaction
|
|
|
|
*/
|
|
public boolean commitTransaction()
|
|
{
|
|
return this.executeCommand("(commit transaction)", SecondoInterface.EXEC_COMMAND_LISTEXPR_SYNTAX);
|
|
}
|
|
|
|
|
|
|
|
public ListExpr getResultList()
|
|
{
|
|
return resultList;
|
|
}
|
|
|
|
public IntByReference getErrorCode()
|
|
{
|
|
return errorCode;
|
|
}
|
|
|
|
public IntByReference getErrorPos()
|
|
{
|
|
return errorPos;
|
|
}
|
|
|
|
public StringBuffer getErrorMessage()
|
|
{
|
|
return errorMessage;
|
|
}
|
|
|
|
/**
|
|
* Returns the ServerErrorCode for a 'list objects' command.
|
|
*/
|
|
public int testConnection()
|
|
{
|
|
this.executeCommand("(list objects)", SecondoInterface.EXEC_COMMAND_LISTEXPR_SYNTAX);
|
|
return getErrorCode().value;
|
|
}
|
|
|
|
}
|