コード例 #1
0
ファイル: TdsParser.cs プロジェクト: nnyamhon/corefx
        // Main parse loop for the top-level tds tokens, calls back into the I*Handler interfaces
        internal bool TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, out bool dataReady)
        {
            Debug.Assert((SniContext.Undefined != stateObj.SniContext) &&       // SniContext must not be Undefined
                ((stateObj._attentionSent) || ((SniContext.Snix_Execute != stateObj.SniContext) && (SniContext.Snix_SendRows != stateObj.SniContext))),  // SniContext should not be Execute or SendRows unless attention was sent (and, therefore, we are looking for an ACK)
                        String.Format("Unexpected SniContext on call to TryRun; SniContext={0}", stateObj.SniContext));

            if (TdsParserState.Broken == State || TdsParserState.Closed == State)
            {
                dataReady = true;
                return true; // Just in case this is called in a loop, expecting data to be returned.
            }

            dataReady = false;

            do
            {
                // If there is data ready, but we didn't exit the loop, then something is wrong
                Debug.Assert(!dataReady, "dataReady not expected - did we forget to skip the row?");

                if (stateObj._internalTimeout)
                {
                    runBehavior = RunBehavior.Attention;
                }

                if (TdsParserState.Broken == State || TdsParserState.Closed == State)
                    break; // jump out of the loop if the state is already broken or closed.

                if (!stateObj._accumulateInfoEvents && (stateObj._pendingInfoEvents != null))
                {
                    if (RunBehavior.Clean != (RunBehavior.Clean & runBehavior))
                    {
                        SqlConnection connection = null;
                        if (_connHandler != null)
                            connection = _connHandler.Connection; // SqlInternalConnection holds the user connection object as a weak ref
                        // We are omitting checks for error.Class in the code below (see processing of INFO) since we know (and assert) that error class
                        // error.Class < TdsEnums.MIN_ERROR_CLASS for info message. 
                        // Also we know that TdsEnums.MIN_ERROR_CLASS<TdsEnums.MAX_USER_CORRECTABLE_ERROR_CLASS
                        if ((connection != null) && connection.FireInfoMessageEventOnUserErrors)
                        {
                            foreach (SqlError error in stateObj._pendingInfoEvents)
                                FireInfoMessageEvent(connection, stateObj, error);
                        }
                        else
                            foreach (SqlError error in stateObj._pendingInfoEvents)
                                stateObj.AddWarning(error);
                    }
                    stateObj._pendingInfoEvents = null;
                }

                byte token;
                if (!stateObj.TryReadByte(out token))
                {
                    return false;
                }

                if (!IsValidTdsToken(token))
                {
                    Debug.Assert(false, String.Format((IFormatProvider)null, "unexpected token; token = {0,-2:X2}", token));
                    _state = TdsParserState.Broken;
                    _connHandler.BreakConnection();
                    throw SQL.ParsingError();
                }

                int tokenLength;
                if (!TryGetTokenLength(token, stateObj, out tokenLength))
                {
                    return false;
                }

                switch (token)
                {
                    case TdsEnums.SQLERROR:
                    case TdsEnums.SQLINFO:
                        {
                            if (token == TdsEnums.SQLERROR)
                            {
                                stateObj._errorTokenReceived = true; // Keep track of the fact error token was received - for Done processing.
                            }

                            SqlError error;
                            if (!TryProcessError(token, stateObj, out error))
                            {
                                return false;
                            }

                            if (token == TdsEnums.SQLINFO && stateObj._accumulateInfoEvents)
                            {
                                Debug.Assert(error.Class < TdsEnums.MIN_ERROR_CLASS, "INFO with class > TdsEnums.MIN_ERROR_CLASS");

                                if (stateObj._pendingInfoEvents == null)
                                    stateObj._pendingInfoEvents = new List<SqlError>();
                                stateObj._pendingInfoEvents.Add(error);
                                stateObj._syncOverAsync = true;
                                break;
                            }

                            if (RunBehavior.Clean != (RunBehavior.Clean & runBehavior))
                            {
                                // If FireInfoMessageEventOnUserErrors is true, we have to fire event without waiting.
                                // Otherwise we can go ahead and add it to errors/warnings collection.
                                SqlConnection connection = null;
                                if (_connHandler != null)
                                    connection = _connHandler.Connection; // SqlInternalConnection holds the user connection object as a weak ref

                                if ((connection != null) &&
                                    (connection.FireInfoMessageEventOnUserErrors == true) &&
                                    (error.Class <= TdsEnums.MAX_USER_CORRECTABLE_ERROR_CLASS))
                                {
                                    // Fire SqlInfoMessage here
                                    FireInfoMessageEvent(connection, stateObj, error);
                                }
                                else
                                {
                                    // insert error/info into the appropriate exception - warning if info, exception if error
                                    if (error.Class < TdsEnums.MIN_ERROR_CLASS)
                                    {
                                        stateObj.AddWarning(error);
                                    }
                                    else if (error.Class < TdsEnums.FATAL_ERROR_CLASS)
                                    {
                                        // Continue results processing for all non-fatal errors (<20)

                                        stateObj.AddError(error);

                                        // Add it to collection - but do NOT change run behavior UNLESS
                                        // we are in an ExecuteReader call - at which time we will be throwing
                                        // anyways so we need to consume all errors.  This is not the case
                                        // if we have already given out a reader.  If we have already given out
                                        // a reader we need to throw the error but not halt further processing.  We used to
                                        // halt processing.

                                        if (null != dataStream)
                                        {
                                            if (!dataStream.IsInitialized)
                                            {
                                                runBehavior = RunBehavior.UntilDone;
                                            }
                                        }
                                    }
                                    else
                                    {
                                        stateObj.AddError(error);

                                        // Else we have a fatal error and we need to change the behavior
                                        // since we want the complete error information in the exception.
                                        // Besides - no further results will be received.
                                        runBehavior = RunBehavior.UntilDone;
                                    }
                                }
                            }
                            else if (error.Class >= TdsEnums.FATAL_ERROR_CLASS)
                            {
                                stateObj.AddError(error);
                            }
                            break;
                        }

                    case TdsEnums.SQLCOLINFO:
                        {
                            if (null != dataStream)
                            {
                                _SqlMetaDataSet metaDataSet;
                                if (!TryProcessColInfo(dataStream.MetaData, dataStream, stateObj, out metaDataSet))
                                {
                                    return false;
                                }
                                if (!dataStream.TrySetMetaData(metaDataSet, false))
                                {
                                    return false;
                                }
                                dataStream.BrowseModeInfoConsumed = true;
                            }
                            else
                            { // no dataStream
                                if (!stateObj.TrySkipBytes(tokenLength))
                                {
                                    return false;
                                }
                            }
                            break;
                        }

                    case TdsEnums.SQLDONE:
                    case TdsEnums.SQLDONEPROC:
                    case TdsEnums.SQLDONEINPROC:
                        {
                            // RunBehavior can be modified
                            if (!TryProcessDone(cmdHandler, dataStream, ref runBehavior, stateObj))
                            {
                                return false;
                            }
                            if ((token == TdsEnums.SQLDONEPROC) && (cmdHandler != null))
                            {
                                cmdHandler.OnDoneProc();
                            }

                            break;
                        }

                    case TdsEnums.SQLORDER:
                        {
                            // don't do anything with the order token so read off the pipe
                            if (!stateObj.TrySkipBytes(tokenLength))
                            {
                                return false;
                            }
                            break;
                        }

                    case TdsEnums.SQLALTMETADATA:
                        {
                            stateObj.CloneCleanupAltMetaDataSetArray();

                            if (stateObj._cleanupAltMetaDataSetArray == null)
                            {
                                // create object on demand (lazy creation)
                                stateObj._cleanupAltMetaDataSetArray = new _SqlMetaDataSetCollection();
                            }

                            _SqlMetaDataSet cleanupAltMetaDataSet;
                            if (!TryProcessAltMetaData(tokenLength, stateObj, out cleanupAltMetaDataSet))
                            {
                                return false;
                            }

                            stateObj._cleanupAltMetaDataSetArray.SetAltMetaData(cleanupAltMetaDataSet);
                            if (null != dataStream)
                            {
                                byte metadataConsumedByte;
                                if (!stateObj.TryPeekByte(out metadataConsumedByte))
                                {
                                    return false;
                                }
                                if (!dataStream.TrySetAltMetaDataSet(cleanupAltMetaDataSet, (TdsEnums.SQLALTMETADATA != metadataConsumedByte)))
                                {
                                    return false;
                                }
                            }

                            break;
                        }

                    case TdsEnums.SQLALTROW:
                        {
                            if (!stateObj.TryStartNewRow(isNullCompressed: false))
                            { // altrows are not currently null compressed
                                return false;
                            }

                            // read will call run until dataReady. Must not read any data if returnimmetiately set
                            if (RunBehavior.ReturnImmediately != (RunBehavior.ReturnImmediately & runBehavior))
                            {
                                ushort altRowId;
                                if (!stateObj.TryReadUInt16(out altRowId))
                                { // get altRowId
                                    return false;
                                }

                                if (!TrySkipRow(stateObj._cleanupAltMetaDataSetArray.GetAltMetaData(altRowId), stateObj))
                                { // skip altRow
                                    return false;
                                }
                            }
                            else
                            {
                                dataReady = true;
                            }

                            break;
                        }

                    case TdsEnums.SQLENVCHANGE:
                        {
                            // ENVCHANGE must be processed synchronously (since it can modify the state of many objects)
                            stateObj._syncOverAsync = true;

                            SqlEnvChange[] env;
                            if (!TryProcessEnvChange(tokenLength, stateObj, out env))
                            {
                                return false;
                            }

                            for (int ii = 0; ii < env.Length; ii++)
                            {
                                if (env[ii] != null && !this.Connection.IgnoreEnvChange)
                                {
                                    switch (env[ii].type)
                                    {
                                        case TdsEnums.ENV_BEGINTRAN:
                                            // When we get notification from the server of a new
                                            // transaction, we move any pending transaction over to
                                            // the current transaction, then we store the token in it.
                                            // if there isn't a pending transaction, then it's either
                                            // a TSQL transaction or a distributed transaction.
                                            Debug.Assert(null == _currentTransaction, "non-null current transaction with an ENV Change");
                                            _currentTransaction = _pendingTransaction;
                                            _pendingTransaction = null;

                                            if (null != _currentTransaction)
                                            {
                                                _currentTransaction.TransactionId = env[ii].newLongValue;   // this is defined as a ULongLong in the server and in the TDS Spec.
                                            }
                                            else
                                            {
                                                TransactionType transactionType = TransactionType.LocalFromTSQL;
                                                _currentTransaction = new SqlInternalTransaction(_connHandler, transactionType, null, env[ii].newLongValue);
                                            }
                                            if (null != _statistics && !_statisticsIsInTransaction)
                                            {
                                                _statistics.SafeIncrement(ref _statistics._transactions);
                                            }
                                            _statisticsIsInTransaction = true;
                                            break;
                                        case TdsEnums.ENV_COMMITTRAN:
                                            // SQLHOT 483
                                            //  Must clear the retain id if the server-side transaction ends by anything other
                                            //  than rollback.
                                            goto case TdsEnums.ENV_ROLLBACKTRAN;
                                        case TdsEnums.ENV_ROLLBACKTRAN:
                                            // When we get notification of a completed transaction
                                            // we null out the current transaction.
                                            if (null != _currentTransaction)
                                            {
#if DEBUG
                                                // Check null for case where Begin and Rollback obtained in the same message.
                                                if (SqlInternalTransaction.NullTransactionId != _currentTransaction.TransactionId)
                                                {
                                                    Debug.Assert(_currentTransaction.TransactionId != env[ii].newLongValue, "transaction id's are not equal!");
                                                }
#endif

                                                if (TdsEnums.ENV_COMMITTRAN == env[ii].type)
                                                {
                                                    _currentTransaction.Completed(TransactionState.Committed);
                                                }
                                                else if (TdsEnums.ENV_ROLLBACKTRAN == env[ii].type)
                                                {
                                                    //  Hold onto transaction id if distributed tran is rolled back.  This must
                                                    //  be sent to the server on subsequent executions even though the transaction
                                                    //  is considered to be rolled back.
                                                    _currentTransaction.Completed(TransactionState.Aborted);
                                                }
                                                else
                                                {
                                                    _currentTransaction.Completed(TransactionState.Unknown);
                                                }
                                                _currentTransaction = null;
                                            }
                                            _statisticsIsInTransaction = false;
                                            break;
                                        case TdsEnums.ENV_ENLISTDTC:
                                        case TdsEnums.ENV_DEFECTDTC:
                                        case TdsEnums.ENV_TRANSACTIONENDED:
                                            Debug.Assert(false, "Should have thrown if DTC token encountered");
                                            break;
                                        default:
                                            _connHandler.OnEnvChange(env[ii]);
                                            break;
                                    }
                                }
                            }
                            break;
                        }
                    case TdsEnums.SQLLOGINACK:
                        {
                            SqlLoginAck ack;
                            if (!TryProcessLoginAck(stateObj, out ack))
                            {
                                return false;
                            }

                            _connHandler.OnLoginAck(ack);
                            break;
                        }
                    case TdsEnums.SQLFEATUREEXTACK:
                        {
                            if (!TryProcessFeatureExtAck(stateObj))
                            {
                                return false;
                            }
                            break;
                        }
                    case TdsEnums.SQLSESSIONSTATE:
                        {
                            if (!TryProcessSessionState(stateObj, tokenLength, _connHandler._currentSessionData))
                            {
                                return false;
                            }
                            break;
                        }
                    case TdsEnums.SQLCOLMETADATA:
                        {
                            if (tokenLength != TdsEnums.VARNULL)
                            {
                                _SqlMetaDataSet metadata;
                                if (!TryProcessMetaData(tokenLength, stateObj, out metadata))
                                {
                                    return false;
                                }
                                stateObj._cleanupMetaData = metadata;
                            }
                            else
                            {
                                if (cmdHandler != null)
                                {
                                    stateObj._cleanupMetaData = cmdHandler.MetaData;
                                }
                            }

                            if (null != dataStream)
                            {
                                byte peekedToken;
                                if (!stateObj.TryPeekByte(out peekedToken))
                                { // temporarily cache next byte
                                    return false;
                                }

                                if (!dataStream.TrySetMetaData(stateObj._cleanupMetaData, (TdsEnums.SQLTABNAME == peekedToken || TdsEnums.SQLCOLINFO == peekedToken)))
                                {
                                    return false;
                                }
                            }
                            else if (null != bulkCopyHandler)
                            {
                                bulkCopyHandler.SetMetaData(stateObj._cleanupMetaData);
                            }
                            break;
                        }
                    case TdsEnums.SQLROW:
                    case TdsEnums.SQLNBCROW:
                        {
                            Debug.Assert(stateObj._cleanupMetaData != null, "Reading a row, but the metadata is null");

                            if (token == TdsEnums.SQLNBCROW)
                            {
                                if (!stateObj.TryStartNewRow(isNullCompressed: true, nullBitmapColumnsCount: stateObj._cleanupMetaData.Length))
                                {
                                    return false;
                                }
                            }
                            else
                            {
                                if (!stateObj.TryStartNewRow(isNullCompressed: false))
                                {
                                    return false;
                                }
                            }

                            if (null != bulkCopyHandler)
                            {
                                if (!TryProcessRow(stateObj._cleanupMetaData, bulkCopyHandler.CreateRowBuffer(), bulkCopyHandler.CreateIndexMap(), stateObj))
                                {
                                    return false;
                                }
                            }
                            else if (RunBehavior.ReturnImmediately != (RunBehavior.ReturnImmediately & runBehavior))
                            {
                                if (!TrySkipRow(stateObj._cleanupMetaData, stateObj))
                                { // skip rows
                                    return false;
                                }
                            }
                            else
                            {
                                dataReady = true;
                            }

                            if (_statistics != null)
                            {
                                _statistics.WaitForDoneAfterRow = true;
                            }
                            break;
                        }
                    case TdsEnums.SQLRETURNSTATUS:
                        int status;
                        if (!stateObj.TryReadInt32(out status))
                        {
                            return false;
                        }
                        if (cmdHandler != null)
                        {
                            cmdHandler.OnReturnStatus(status);
                        }
                        break;
                    case TdsEnums.SQLRETURNVALUE:
                        {
                            SqlReturnValue returnValue;
                            if (!TryProcessReturnValue(tokenLength, stateObj, out returnValue))
                            {
                                return false;
                            }
                            if (cmdHandler != null)
                            {
                                cmdHandler.OnReturnValue(returnValue);
                            }
                            break;
                        }
                    case TdsEnums.SQLSSPI:
                        {
                            // token length is length of SSPI data - call ProcessSSPI with it

                            Debug.Assert(stateObj._syncOverAsync, "ProcessSSPI does not support retry, do not attempt asynchronously");
                            stateObj._syncOverAsync = true;

                            ProcessSSPI(tokenLength);
                            break;
                        }
                    case TdsEnums.SQLTABNAME:
                        {
                            {
                                if (!stateObj.TrySkipBytes(tokenLength))
                                {
                                    return false;
                                }
                            }
                            break;
                        }

                    default:
                        Debug.Assert(false, "Unhandled token:  " + token.ToString(CultureInfo.InvariantCulture));
                        break;
                }

                Debug.Assert(stateObj._pendingData || !dataReady, "dataReady is set, but there is no pending data");
            }

            // Loop while data pending & runbehavior not return immediately, OR
            // if in attention case, loop while no more pending data & attention has not yet been
            // received.
            while ((stateObj._pendingData &&
                    (RunBehavior.ReturnImmediately != (RunBehavior.ReturnImmediately & runBehavior))) ||
                (!stateObj._pendingData && stateObj._attentionSent && !stateObj._attentionReceived));

#if DEBUG
            if ((stateObj._pendingData) && (!dataReady))
            {
                byte token;
                if (!stateObj.TryPeekByte(out token))
                {
                    return false;
                }
                Debug.Assert(IsValidTdsToken(token), string.Format("DataReady is false, but next token is not valid: {0,-2:X2}", token));
            }
#endif

            if (!stateObj._pendingData)
            {
                if (null != CurrentTransaction)
                {
                    CurrentTransaction.Activate();
                }
            }

            // if we recieved an attention (but this thread didn't send it) then
            // we throw an Operation Cancelled error
            if (stateObj._attentionReceived)
            {
                // Dev11 #344723: SqlClient stress hang System_Data!Tcp::ReadSync via a call to SqlDataReader::Close
                // Spin until SendAttention has cleared _attentionSending, this prevents a race condition between receiving the attention ACK and setting _attentionSent
                SpinWait.SpinUntil(() => !stateObj._attentionSending);

                Debug.Assert(stateObj._attentionSent, "Attention ACK has been received without attention sent");
                if (stateObj._attentionSent)
                {
                    // Reset attention state.
                    stateObj._attentionSent = false;
                    stateObj._attentionReceived = false;

                    if (RunBehavior.Clean != (RunBehavior.Clean & runBehavior) && !stateObj._internalTimeout)
                    {
                        // Add attention error to collection - if not RunBehavior.Clean!
                        stateObj.AddError(new SqlError(0, 0, TdsEnums.MIN_ERROR_CLASS, _server, SQLMessage.OperationCancelled(), "", 0));
                    }
                }
            }

            if (stateObj.HasErrorOrWarning)
            {
                ThrowExceptionAndWarning(stateObj);
            }
            return true;
        }
コード例 #2
0
        internal bool Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)
        {
            if ((TdsParserState.Broken == this.State) || (this.State == TdsParserState.Closed))
            {
                return true;
            }
            bool flag = false;
        Label_0016:
            if (stateObj._internalTimeout)
            {
                runBehavior = RunBehavior.Attention;
            }
            if ((TdsParserState.Broken == this.State) || (this.State == TdsParserState.Closed))
            {
                goto Label_0705;
            }
            byte token = stateObj.ReadByte();
            if ((((((token != 170) && (token != 0xab)) && ((token != 0xad) && (token != 0xe3))) && (((token != 0xac) && (token != 0x79)) && ((token != 160) && (token != 0xa1)))) && ((((token != 0x81) && (token != 0x88)) && ((token != 0xa4) && (token != 0xa5))) && (((token != 0xa9) && (token != 0xd3)) && ((token != 0xd1) && (token != 0xfd))))) && ((((token != 0xfe) && (token != 0xff)) && ((token != 0x39) && (token != 0xed))) && (((token != 0xae) && (token != 0x7c)) && ((token != 120) && (token != 0xed)))))
            {
                this._state = TdsParserState.Broken;
                this._connHandler.BreakConnection();
                Bid.Trace("<sc.TdsParser.Run|ERR> Potential multi-threaded misuse of connection, unexpected TDS token found %d#\n", this.ObjectID);
                throw SQL.ParsingError();
            }
            int tokenLength = this.GetTokenLength(token, stateObj);
            switch (token)
            {
                case 0xa4:
                    if (dataStream == null)
                    {
                        this.SkipBytes(tokenLength, stateObj);
                    }
                    else
                    {
                        dataStream.TableNames = this.ProcessTableName(tokenLength, stateObj);
                    }
                    goto Label_06D5;

                case 0xa5:
                    if (dataStream == null)
                    {
                        this.SkipBytes(tokenLength, stateObj);
                    }
                    else
                    {
                        _SqlMetaDataSet metaData = this.ProcessColInfo(dataStream.MetaData, dataStream, stateObj);
                        dataStream.SetMetaData(metaData, false);
                        dataStream.BrowseModeInfoConsumed = true;
                    }
                    goto Label_06D5;

                case 0xa9:
                    this.SkipBytes(tokenLength, stateObj);
                    goto Label_06D5;

                case 170:
                case 0xab:
                {
                    if (token == 170)
                    {
                        stateObj._errorTokenReceived = true;
                    }
                    SqlError error = this.ProcessError(token, stateObj);
                    if (RunBehavior.Clean == (RunBehavior.Clean & runBehavior))
                    {
                        if (error.Class >= 20)
                        {
                            this.Errors.Add(error);
                        }
                    }
                    else
                    {
                        SqlConnection connection = null;
                        if (this._connHandler != null)
                        {
                            connection = this._connHandler.Connection;
                        }
                        if (((connection != null) && connection.FireInfoMessageEventOnUserErrors) && (error.Class <= 0x10))
                        {
                            this.FireInfoMessageEvent(connection, stateObj, error);
                        }
                        else if (error.Class < 11)
                        {
                            this.Warnings.Add(error);
                        }
                        else if (error.Class < 20)
                        {
                            this.Errors.Add(error);
                            if ((dataStream != null) && !dataStream.IsInitialized)
                            {
                                runBehavior = RunBehavior.UntilDone;
                            }
                        }
                        else
                        {
                            this.Errors.Add(error);
                            runBehavior = RunBehavior.UntilDone;
                        }
                    }
                    goto Label_06D5;
                }
                case 0xac:
                {
                    SqlReturnValue rec = this.ProcessReturnValue(tokenLength, stateObj);
                    if (cmdHandler != null)
                    {
                        cmdHandler.OnReturnValue(rec);
                    }
                    goto Label_06D5;
                }
                case 0xad:
                {
                    SqlLoginAck ack = this.ProcessLoginAck(stateObj);
                    this._connHandler.OnLoginAck(ack);
                    goto Label_06D5;
                }
                case 0x88:
                {
                    if (stateObj._cleanupAltMetaDataSetArray == null)
                    {
                        stateObj._cleanupAltMetaDataSetArray = new _SqlMetaDataSetCollection();
                    }
                    _SqlMetaDataSet altMetaDataSet = this.ProcessAltMetaData(tokenLength, stateObj);
                    stateObj._cleanupAltMetaDataSetArray.SetAltMetaData(altMetaDataSet);
                    if (dataStream != null)
                    {
                        dataStream.SetAltMetaDataSet(altMetaDataSet, 0x88 != stateObj.PeekByte());
                    }
                    goto Label_06D5;
                }
                case 0x79:
                {
                    int status = stateObj.ReadInt32();
                    if (cmdHandler != null)
                    {
                        cmdHandler.OnReturnStatus(status);
                    }
                    goto Label_06D5;
                }
                case 0x81:
                    if (tokenLength != 0xffff)
                    {
                        stateObj._cleanupMetaData = this.ProcessMetaData(tokenLength, stateObj);
                    }
                    else if (cmdHandler != null)
                    {
                        stateObj._cleanupMetaData = cmdHandler.MetaData;
                    }
                    if (dataStream != null)
                    {
                        byte num5 = stateObj.PeekByte();
                        dataStream.SetMetaData(stateObj._cleanupMetaData, (0xa4 == num5) || (0xa5 == num5));
                    }
                    else if (bulkCopyHandler != null)
                    {
                        bulkCopyHandler.SetMetaData(stateObj._cleanupMetaData);
                    }
                    goto Label_06D5;

                case 0xd1:
                    if (bulkCopyHandler == null)
                    {
                        if (RunBehavior.ReturnImmediately != (RunBehavior.ReturnImmediately & runBehavior))
                        {
                            this.SkipRow(stateObj._cleanupMetaData, stateObj);
                        }
                        break;
                    }
                    this.ProcessRow(stateObj._cleanupMetaData, bulkCopyHandler.CreateRowBuffer(), bulkCopyHandler.CreateIndexMap(), stateObj);
                    break;

                case 0xd3:
                    if (RunBehavior.ReturnImmediately != (RunBehavior.ReturnImmediately & runBehavior))
                    {
                        int id = stateObj.ReadUInt16();
                        this.SkipRow(stateObj._cleanupAltMetaDataSetArray.GetAltMetaData(id), stateObj);
                    }
                    flag = true;
                    goto Label_06D5;

                case 0xe3:
                {
                    SqlEnvChange[] changeArray = this.ProcessEnvChange(tokenLength, stateObj);
                    for (int i = 0; i < changeArray.Length; i++)
                    {
                        if ((changeArray[i] == null) || this.Connection.IgnoreEnvChange)
                        {
                            continue;
                        }
                        switch (changeArray[i].type)
                        {
                            case 8:
                            case 11:
                                this._currentTransaction = this._pendingTransaction;
                                this._pendingTransaction = null;
                                if (this._currentTransaction == null)
                                {
                                    break;
                                }
                                this._currentTransaction.TransactionId = changeArray[i].newLongValue;
                                goto Label_04B4;

                            case 9:
                            case 12:
                            case 0x11:
                                this._retainedTransactionId = 0L;
                                goto Label_04F7;

                            case 10:
                                goto Label_04F7;

                            default:
                                goto Label_0577;
                        }
                        TransactionType type = (8 == changeArray[i].type) ? TransactionType.LocalFromTSQL : TransactionType.Distributed;
                        this._currentTransaction = new SqlInternalTransaction(this._connHandler, type, null, changeArray[i].newLongValue);
                    Label_04B4:
                        if ((this._statistics != null) && !this._statisticsIsInTransaction)
                        {
                            this._statistics.SafeIncrement(ref this._statistics._transactions);
                        }
                        this._statisticsIsInTransaction = true;
                        this._retainedTransactionId = 0L;
                        continue;
                    Label_04F7:
                        if (this._currentTransaction != null)
                        {
                            if (9 == changeArray[i].type)
                            {
                                this._currentTransaction.Completed(TransactionState.Committed);
                            }
                            else if (10 == changeArray[i].type)
                            {
                                if (this._currentTransaction.IsDistributed && this._currentTransaction.IsActive)
                                {
                                    this._retainedTransactionId = changeArray[i].oldLongValue;
                                }
                                this._currentTransaction.Completed(TransactionState.Aborted);
                            }
                            else
                            {
                                this._currentTransaction.Completed(TransactionState.Unknown);
                            }
                            this._currentTransaction = null;
                        }
                        this._statisticsIsInTransaction = false;
                        continue;
                    Label_0577:
                        this._connHandler.OnEnvChange(changeArray[i]);
                    }
                    goto Label_06D5;
                }
                case 0xfd:
                case 0xfe:
                case 0xff:
                    this.ProcessDone(cmdHandler, dataStream, ref runBehavior, stateObj);
                    if ((token == 0xfe) && (cmdHandler != null))
                    {
                        cmdHandler.OnDoneProc();
                    }
                    goto Label_06D5;

                case 0xed:
                    this.ProcessSSPI(tokenLength);
                    goto Label_06D5;

                default:
                    goto Label_06D5;
            }
            if (this._statistics != null)
            {
                this._statistics.WaitForDoneAfterRow = true;
            }
            flag = true;
        Label_06D5:
            if ((stateObj._pendingData && (RunBehavior.ReturnImmediately != (RunBehavior.ReturnImmediately & runBehavior))) || ((!stateObj._pendingData && stateObj._attentionSent) && !stateObj._attentionReceived))
            {
                goto Label_0016;
            }
        Label_0705:
            if (!stateObj._pendingData && (this.CurrentTransaction != null))
            {
                this.CurrentTransaction.Activate();
            }
            if (stateObj._attentionSent && stateObj._attentionReceived)
            {
                stateObj._attentionSent = false;
                stateObj._attentionReceived = false;
                if ((RunBehavior.Clean != (RunBehavior.Clean & runBehavior)) && !stateObj._internalTimeout)
                {
                    this.Errors.Add(new SqlError(0, 0, 11, this._server, SQLMessage.OperationCancelled(), "", 0));
                }
            }
            if ((this._errors != null) || (this._warnings != null))
            {
                this.ThrowExceptionAndWarning();
            }
            return flag;
        }