/// <summary>
/// Fetch
/// </summary>
/// <returns></returns>
internal GatewayResult CursorFetch()
{
//vew_fetch_rng
GatewayCommandBase cursorCommand = GatewayCommandsFactory.CreateCursorFetchCommand(CurrentCursor, LocalDataviewManager.LocalManager);
return(cursorCommand.Execute());
}
/// <summary>
/// open cursor
/// </summary>
/// <param name="reverse"></param>
/// <param name="startPosition"></param>
/// <param name="useLocate">If this is the 1st access to the table, locate values should be considered.
/// if not - use only ranges</param>
/// <returns></returns>
internal GatewayResult OpenCursor(bool reverse, DbPos startPosition, BoudariesFlags boundariesFlag)
{
CurrentCursor.CursorDefinition.SetFlagValue(CursorProperties.DirReversed, reverse);
CurrentCursor.CursorDefinition.StartPosition = startPosition;
// build the RangeData list
CurrentCursor.RuntimeCursorData.Ranges = RangeBuilder.Build(boundariesFlag);
GatewayCommandBase cursorCommand = GatewayCommandsFactory.CreateCursorOpenCommand(CurrentCursor, LocalDataviewManager.LocalManager);
//String r = CurrentCursor.Serialize();
return(cursorCommand.Execute());
}
/// <summary>
///
/// </summary>
/// <returns></returns>
internal GatewayResult CloseCursor()
{
GatewayCommandBase cursorCommand = GatewayCommandsFactory.CreateCursorCloseCommand(CurrentCursor, LocalDataviewManager.LocalManager);
return(cursorCommand.Execute());
}
/// <summary>
///
/// </summary>
/// <returns></returns>
internal override ReturnResultBase Execute()
{
GatewayResult gatewayResult = new GatewayResult();
Transaction ownerTransaction = null;
if (TaskTransactionManager.LocalOpenedTransactionsCount > 0)
{
gatewayResult = RollbaclTransactionInGateway();
if (gatewayResult.Success)
{
if (DataviewManager.Transaction != null)
{
ownerTransactionTask = DataviewManager.Transaction.OwnerTask;
ownerTransaction = ownerTransactionTask.DataviewManager.LocalDataviewManager.Transaction;
//1. calculate the current task , the task that was execute the rollback transaction (Command.taskgTag)
//Debug.WriteLine("Commit Transaction on task--> " + LocalDataviewManager.CurrentOpenTransaction.OwnerTask);
ownerTransactionTask.CancelAndRefreshCurrentRecordAfterRollback();
}
GatewayCommandBase transactionCommand = GatewayCommandsFactory.CreateGatewayCommandOpenTransaction(LocalManager);
gatewayResult = transactionCommand.Execute();
//2. Close\refresh all tasks that are under the current transaction
switch (Command.Rollback)
{
case RollbackEventCommand.RollbackType.CANCEL:
MGDataCollection.Instance.ForEachTask(new TaskDelegate(CancelAndRefreshCurrentRecordAfterRollback), ownerTransactionTask);
MGDataCollection.Instance.ForEachTask(new TaskDelegate(ViewRefreshAfterRollback), ownerTransactionTask);
break;
case RollbackEventCommand.RollbackType.ROLLBACK:
{
// fixed bug#294247 rollback the value in StopExecution
bool saveStopExec = ClientManager.Instance.EventsManager.GetStopExecutionFlag();
StopExecWasUpdated = false;
MGDataCollection.Instance.ForEachTask(new TaskDelegate(CancelAndRefreshCurrentRecordAfterRollback), null);
MGDataCollection.Instance.ForEachTask(new TaskDelegate(ViewRefreshAfterRollback), null);
if (ownerTransactionTask != null)
{
ownerTransactionTask.AbortDirectTasks();
}
if (StopExecWasUpdated)
{
ClientManager.Instance.EventsManager.setStopExecution(saveStopExec);
}
}
break;
default:
break;
}
}
else
{
gatewayResult.ErrorCode = GatewayErrorCode.TransactionAbort;
}
}
return(gatewayResult);
}
