private void InternalExecuteQueryAsync(AseCommand command, AseTransaction transaction, TaskCompletionSource <DbDataReader> readerSource, CommandBehavior behavior)
{
AssertExecutionStart();
try
{
SendPacket(new NormalPacket(BuildCommandTokens(command, behavior)));
var envChangeTokenHandler = new EnvChangeTokenHandler(_environment, _parameters.Charset);
var doneHandler = new DoneTokenHandler();
var messageHandler = new MessageTokenHandler(EventNotifier);
var dataReaderHandler = new DataReaderTokenHandler();
var responseParameterTokenHandler = new ResponseParameterTokenHandler(command.AseParameters);
ReceiveTokens(
envChangeTokenHandler,
doneHandler,
messageHandler,
dataReaderHandler,
responseParameterTokenHandler);
AssertExecutionCompletion(doneHandler);
if (transaction != null && doneHandler.TransactionState == TranState.TDS_TRAN_ABORT)
{
transaction.MarkAborted();
}
messageHandler.AssertNoErrors();
if (doneHandler.Canceled)
{
readerSource.TrySetCanceled(); // If we have already begun returning data, then this will get lost.
}
else
{
#if ENABLE_SYSTEM_DATA_COMMON_EXTENSIONS
readerSource.TrySetResult(new AseDataReader(dataReaderHandler.Results(), command, behavior));
#else
readerSource.TrySetResult(new AseDataReader(dataReaderHandler.Results(), behavior));
#endif
}
}
catch (Exception ex)
{
readerSource.TrySetException(ex); // If we have already begun returning data, then this will get lost.
}
}
private void InternalExecuteNonQueryAsync(AseCommand command, AseTransaction transaction, TaskCompletionSource <int> rowsAffectedSource)
{
AssertExecutionStart();
try
{
SendPacket(new NormalPacket(BuildCommandTokens(command, CommandBehavior.Default)));
var envChangeTokenHandler = new EnvChangeTokenHandler(_environment, _parameters.Charset);
var messageHandler = new MessageTokenHandler(EventNotifier);
var responseParameterTokenHandler = new ResponseParameterTokenHandler(command.AseParameters);
var doneHandler = new DoneTokenHandler();
ReceiveTokens(
envChangeTokenHandler,
messageHandler,
responseParameterTokenHandler,
doneHandler);
AssertExecutionCompletion(doneHandler);
if (transaction != null && doneHandler.TransactionState == TranState.TDS_TRAN_ABORT)
{
transaction.MarkAborted();
}
messageHandler.AssertNoErrors();
if (doneHandler.Canceled)
{
rowsAffectedSource.TrySetCanceled();
}
else
{
rowsAffectedSource.TrySetResult(doneHandler.RowsAffected);
}
}
catch (Exception ex)
{
if (!rowsAffectedSource.TrySetException(ex))
{
throw;
}
}
}
private void InternalExecuteQueryAsync(AseCommand command, AseTransaction transaction, TaskCompletionSource <DbDataReader> readerSource, CommandBehavior behavior)
{
AssertExecutionStart();
#if ENABLE_SYSTEM_DATA_COMMON_EXTENSIONS
var dataReader = new AseDataReader(command, behavior, EventNotifier);
#else
var dataReader = new AseDataReader(behavior, EventNotifier);
#endif
try
{
SendPacket(new NormalPacket(BuildCommandTokens(command, behavior)));
var envChangeTokenHandler = new EnvChangeTokenHandler(_environment, _parameters.Charset);
var doneHandler = new DoneTokenHandler();
var dataReaderHandler = new StreamingDataReaderTokenHandler(readerSource, dataReader, EventNotifier);
var responseParameterTokenHandler = new ResponseParameterTokenHandler(command.AseParameters);
Logger.Instance?.WriteLine();
Logger.Instance?.WriteLine("---------- Receive Tokens ----------");
try
{
#if ENABLE_ARRAY_POOL
using (var tokenStream = new TokenReceiveStream(_networkStream, _environment, _arrayPool))
#else
using (var tokenStream = new TokenReceiveStream(_networkStream, _environment))
#endif
{
foreach (var receivedToken in _reader.Read(tokenStream, _environment))
{
if (envChangeTokenHandler.CanHandle(receivedToken.Type))
{
envChangeTokenHandler.Handle(receivedToken);
}
if (doneHandler.CanHandle(receivedToken.Type))
{
doneHandler.Handle(receivedToken);
}
if (dataReaderHandler.CanHandle(receivedToken.Type))
{
dataReaderHandler.Handle(receivedToken);
}
if (responseParameterTokenHandler.CanHandle(receivedToken.Type))
{
responseParameterTokenHandler.Handle(receivedToken);
}
}
}
}
finally
{
LastActive = DateTime.UtcNow;
}
// This tells the data reader to stop waiting for more results.
dataReader.CompleteAdding();
AssertExecutionCompletion(doneHandler);
if (transaction != null && doneHandler.TransactionState == TranState.TDS_TRAN_ABORT)
{
transaction.MarkAborted();
}
dataReaderHandler.AssertNoErrors();
if (doneHandler.Canceled)
{
readerSource.TrySetCanceled(); // If we have already begun returning data, then this will get lost.
}
else
{
readerSource.TrySetResult(dataReader); // Catchall - covers cases where no data is returned by the server.
}
}
catch (Exception ex)
{
// If we have already begun returning data, then this will get lost.
if (!readerSource.TrySetException(ex))
{
throw;
}
}
}
private void InternalExecuteQueryAsync(AseCommand command, AseTransaction transaction, TaskCompletionSource <DbDataReader> readerSource, CommandBehavior behavior,
ReaderSourceType readerSourceType = ReaderSourceType.Standard)
{
AssertExecutionStart();
try
{
SendPacket(new NormalPacket(BuildCommandTokens(command, behavior)));
var envChangeTokenHandler = new EnvChangeTokenHandler(_environment, _parameters.Charset);
var doneHandler = new DoneTokenHandler();
var messageHandler = new MessageTokenHandler(EventNotifier);
// Only one of these two data readers will not be null
var dataReaderHandler = readerSourceType == ReaderSourceType.Standard ? new DataReaderTokenHandler() : null;
var dataReaderEventHandler = readerSourceType == ReaderSourceType.ForCallback ? new DataReaderCallbackTokenHandler(behavior, EventNotifier) : null;
var responseParameterTokenHandler = new ResponseParameterTokenHandler(command.AseParameters);
if (readerSourceType == ReaderSourceType.ForCallback)
{
ReceivePartialTokens(
envChangeTokenHandler,
doneHandler,
messageHandler,
dataReaderEventHandler,
responseParameterTokenHandler);
}
else
{
ReceiveTokens(
envChangeTokenHandler,
doneHandler,
messageHandler,
dataReaderHandler,
responseParameterTokenHandler);
}
AssertExecutionCompletion(doneHandler);
if (transaction != null && doneHandler.TransactionState == TranState.TDS_TRAN_ABORT)
{
transaction.MarkAborted();
}
messageHandler.AssertNoErrors();
if (doneHandler.Canceled)
{
readerSource.TrySetCanceled(); // If we have already begun returning data, then this will get lost.
}
else
{
if (dataReaderHandler != null)
#if ENABLE_SYSTEM_DATA_COMMON_EXTENSIONS
{ readerSource.TrySetResult(new AseDataReader(dataReaderHandler.Results(), command, behavior)); }
#else
{ readerSource.TrySetResult(new AseDataReader(dataReaderHandler.Results(), behavior)); }
#endif
else if (dataReaderEventHandler != null)
{
// Set this so that Task.Wait will stop waiting
readerSource.SetResult(null);
}
}
