/// <summary>
/// Prepare and Open runtime cursor
/// </summary>
/// <param name="runtimeCursor"></param>
private void PrepareAndOpenCursor(RuntimeCursor runtimeCursor, bool openTransaction)
{
GatewayResult result = null;
runtimeCursor.CursorDefinition.StartPosition = new DbPos(true);
runtimeCursor.CursorDefinition.CurrentPosition = new DbPos(true);
result = GatewayCommandsFactory.CreateCursorPrepareCommand(runtimeCursor, ClientManager.Instance.LocalManager).Execute();
if (result.Success)
{
if (openTransaction)
{
result = GatewayCommandsFactory.CreateGatewayCommandOpenTransaction(ClientManager.Instance.LocalManager).Execute();
}
if (result.Success)
{
result = GatewayCommandsFactory.CreateCursorOpenCommand(runtimeCursor, ClientManager.Instance.LocalManager).Execute();
}
}
if (!result.Success)
{
throw new DataSourceConversionFailedException(runtimeCursor.CursorDefinition.DataSourceDefinition.Name, result.ErrorDescription);
}
}
/// <summary>
/// open transaction
/// if there is no transaction opened already then
/// open and save it info on ClientManager.Instance.CurrentLocalTransactionOpened
/// else
/// if (transaction that was opend is in my parent task)
/// OK
/// else
/// failed !!!
///
/// </summary>
internal override ReturnResultBase Execute()
{
ReturnResultBase returnResultBase = new GatewayResult();
Transaction transaction = DataviewManager.Transaction.OwnerTask.DataviewManager.LocalDataviewManager.Transaction;
if (!transaction.isOpened())
{
// need to open in the gateway only if no opend before
if (TaskTransactionManager.LocalOpenedTransactionsCount == 0)
{
returnResultBase = GatewayCommandsFactory.CreateGatewayCommandOpenTransaction(LocalManager).Execute();
}
if (returnResultBase.Success)
{
transaction.Opened = true;
TaskTransactionManager.LocalOpenedTransactionsCount++;
//transaction.OwnerTask.TaskTransactionManager.SetCurrentOpenTransactionAsLocalTransaction();
//Debug.WriteLine("Open Transaction on task--> " + LocalDataviewManager.CurrentOpenTransaction.OwnerTask);
}
//else
//{
// // check if the open transaction is in the parent task
// if (!transaction.OwnerTask.isDescendentOf(LocalDataviewManager.CurrentOpenTransaction.OwnerTask))
// returnResultBase = new ReturnResult(MsgInterface.FMERROR_STR_TRANS_OPEN_FAILED);
//}
}
return(returnResultBase);
}
/// <summary>
///
/// </summary>
/// <returns></returns>
internal override ReturnResultBase Execute()
{
GatewayResult gatewayResult = new GatewayResult();
Transaction transaction = DataviewManager.Transaction.OwnerTask.DataviewManager.LocalDataviewManager.Transaction;
// closeclose the transaction only if there is transaction that open
if (TaskTransactionManager.LocalOpenedTransactionsCount > 0)
{
gatewayResult = CloseTransactionInGateway();
if (gatewayResult.Success)
{
//Debug.WriteLine("Commit Transaction on task--> " + LocalDataviewManager.CurrentOpenTransaction.OwnerTask);
transaction.Opened = false;
TaskTransactionManager.LocalOpenedTransactionsCount--;
// there is tasks that in local transaction, we must open the transaction again
if (TaskTransactionManager.LocalOpenedTransactionsCount > 0)
{
gatewayResult = GatewayCommandsFactory.CreateGatewayCommandOpenTransaction(LocalManager).Execute();
}
}
else
{
gatewayResult.ErrorCode = GatewayErrorCode.TransactionCommit;
}
}
return(gatewayResult);
}
/// <summary>
/// Update dataview to DataSource.
/// </summary>
private ReturnResultBase UpdateDataViewToDataSource()
{
bool transactionOpened = false;
string error = string.Empty;
string dataSourceName = ClientManager.Instance.getEnvParamsTable().translate(updateDataViewToDataSourceCommand.DestDataSourceName);
if (string.IsNullOrEmpty(dataSourceName))
{
dataSourceName = destinationDataSourceDefinition.Name;
}
GatewayResult result = GatewayCommandsFactory.CreateFileExistCommand(dataSourceName, destinationDataSourceDefinition, ClientManager.Instance.LocalManager).Execute();
bool insertMode = !result.Success;
if (!insertMode)
{
uniqueKey = GetUniqueKey();
if (uniqueKey == null)
{
error = "DataViewToDataSource - When using the DataViewtoDataSource function, a unique index must be defined in the destination data source .";
Logger.Instance.WriteExceptionToLog(error);
ClientManager.Instance.ErrorToBeWrittenInServerLog = error;
return(new ReturnResult(MsgInterface.STR_DATAVIEW_TO_DATASOURCE_OPERATION_FAILED));
}
else if (!CheckDestinationColumnListContainUniqueKeyColumns())
{
error = "DataViewToDataSource - When using the DataViewtoDataSource function, all the segments of the unique index must be selected.";
Logger.Instance.WriteExceptionToLog(error);
ClientManager.Instance.ErrorToBeWrittenInServerLog = error;
return(new ReturnResult(MsgInterface.STR_DATAVIEW_TO_DATASOURCE_OPERATION_FAILED));
}
}
result = GatewayCommandsFactory.CreateFileOpenCommand(dataSourceName, destinationDataSourceDefinition, Access.Write, ClientManager.Instance.LocalManager).Execute();
if (result.Success)
{
//Build the runtime cursor.
MainCursorBuilder cursorBuilder = new MainCursorBuilder(null);
RuntimeCursor destinationRuntimeCursor = cursorBuilder.Build(destinationDataSourceDefinition, Access.Write);
destinationRuntimeCursor.CursorDefinition.StartPosition = new DbPos(true);
destinationRuntimeCursor.CursorDefinition.CurrentPosition = new DbPos(true);
// Prepare the cursor.
result = GatewayCommandsFactory.CreateCursorPrepareCommand(destinationRuntimeCursor, ClientManager.Instance.LocalManager).Execute();
if (result.Success)
{
//If tansaction is not open then open the transaction.
if (TaskTransactionManager.LocalOpenedTransactionsCount == 0)
{
result = GatewayCommandsFactory.CreateGatewayCommandOpenTransaction(ClientManager.Instance.LocalManager).Execute();
transactionOpened = true;
}
if (result.Success)
{
SetDataToRuntimeParser();
RecordForDataViewToDataSource record = GetRecord();
while (record != null)
{
BuildCurrentValues(destinationRuntimeCursor, record);
result = GatewayCommandsFactory.CreateCursorInsertCommand(destinationRuntimeCursor, ClientManager.Instance.LocalManager, true).Execute();
if (!result.Success)
{
if (result.ErrorCode == GatewayErrorCode.DuplicateKey)
{
if (!insertMode)
{
//Build the ranges using unique key segments value.
BuildRanges(record, destinationRuntimeCursor);
//Open the cursor and apply the ranges.
result = GatewayCommandsFactory.CreateCursorOpenCommand(destinationRuntimeCursor, ClientManager.Instance.LocalManager, true).Execute();
if (result.Success)
{
//Fetch the record
result = GatewayCommandsFactory.CreateCursorFetchCommand(destinationRuntimeCursor, ClientManager.Instance.LocalManager).Execute();
BuildCurrentValues(destinationRuntimeCursor, record);
//If record found, that means record with same key value exists, so update the current record with destination record.
if (result.Success)
{
result = GatewayCommandsFactory.CreateGatewayCommandCursorUpdateRecord(destinationRuntimeCursor, ClientManager.Instance.LocalManager, true).Execute();
}
else
{
if (!string.IsNullOrEmpty(ClientManager.Instance.ErrorToBeWrittenInServerLog))
{
ClientManager.Instance.ErrorToBeWrittenInServerLog += "\r\n";
}
ClientManager.Instance.ErrorToBeWrittenInServerLog += result.ErrorDescription;
}
//Close the cursor.
GatewayCommandsFactory.CreateCursorCloseCommand(destinationRuntimeCursor, ClientManager.Instance.LocalManager).Execute();
}
else
{
if (!string.IsNullOrEmpty(ClientManager.Instance.ErrorToBeWrittenInServerLog))
{
ClientManager.Instance.ErrorToBeWrittenInServerLog += "\r\n";
}
ClientManager.Instance.ErrorToBeWrittenInServerLog += result.ErrorDescription;
}
}
else
{
if (!string.IsNullOrEmpty(ClientManager.Instance.ErrorToBeWrittenInServerLog))
{
ClientManager.Instance.ErrorToBeWrittenInServerLog += "\r\n";
}
ClientManager.Instance.ErrorToBeWrittenInServerLog += result.ErrorDescription;
record = GetRecord();
continue;
}
}
else
{
if (!string.IsNullOrEmpty(ClientManager.Instance.ErrorToBeWrittenInServerLog))
{
ClientManager.Instance.ErrorToBeWrittenInServerLog += "\r\n";
}
ClientManager.Instance.ErrorToBeWrittenInServerLog += result.ErrorDescription;
break;
}
}
record = GetRecord();
}
//If transaction is opened , then close the transaction. If any error occurs then abort the transation else do commit.
if (transactionOpened)
{
GatewayCommandCloseTransaction closeTransactionCommand = GatewayCommandsFactory.CreateGatewayCommandCloseTransaction(ClientManager.Instance.LocalManager);
if (result.Success)
{
closeTransactionCommand.TransactionModes = TransactionModes.Commit;
}
else
{
closeTransactionCommand.TransactionModes = TransactionModes.Abort;
}
closeTransactionCommand.Execute();
}
//Release the cursor and close the file.
GatewayCommandsFactory.CreateCursorReleaseCommand(destinationRuntimeCursor, ClientManager.Instance.LocalManager).Execute();
GatewayCommandsFactory.CreateFileCloseCommand(destinationDataSourceDefinition, ClientManager.Instance.LocalManager).Execute();
}
else
{
ClientManager.Instance.ErrorToBeWrittenInServerLog = result.ErrorDescription;
}
}
else
{
ClientManager.Instance.ErrorToBeWrittenInServerLog = result.ErrorDescription;
}
}
else
{
ClientManager.Instance.ErrorToBeWrittenInServerLog = result.ErrorDescription;
}
return(result);
}
/// <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);
}