SmiContext.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Data / Microsoft / SqlServer / Server / SmiContext.cs / 1 / SmiContext.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
// [....]
//----------------------------------------------------------------------------- 
 
namespace Microsoft.SqlServer.Server {
 
    using System;
    using System.Data;
    using System.Data.Sql;
    using System.Data.SqlTypes; 
    using System.Security.Principal;
 
    // NOTE: connection, transaction and context pipe operations could be 
    //       encapsulated in their own classes, and should if they get complex
    //       (transaction is borderline at this point). 
    internal abstract class SmiContext {

        internal abstract event EventHandler OutOfScope;
 
        internal abstract SmiConnection ContextConnection { get; }
 
        internal abstract long ContextTransactionId { get; } 

        internal abstract System.Transactions.Transaction ContextTransaction { get; } 

        internal abstract bool HasContextPipe { get; }

        internal abstract WindowsIdentity WindowsIdentity { get; } 

        internal abstract SmiRecordBuffer CreateRecordBuffer ( 
            SmiExtendedMetaData[]   columnMetaData,     // Extended metadata because it requires names, udttypename and xmlschemaname ignored 
            SmiEventSink            eventSink
        ); 

        internal abstract SmiRequestExecutor CreateRequestExecutor (
            string                  commandText,
            CommandType             commandType, 
            SmiParameterMetaData[]  parameterMetaData,
            SmiEventSink            eventSink 
        ); 

        // 

        internal abstract object GetContextValue ( int key );

        internal abstract void GetTriggerInfo ( 
            SmiEventSink            eventSink,
            out bool[]              columnsUpdated, 
            out TriggerAction       action, 
            out SqlXml              eventInstanceData
        ); 

        internal abstract void SendMessageToPipe( string message, SmiEventSink eventSink );

        internal abstract void SendResultsStartToPipe( SmiRecordBuffer recordBuffer, SmiEventSink eventSink ); 

        internal abstract void SendResultsRowToPipe( SmiRecordBuffer recordBuffer, SmiEventSink eventSink ); 
 
        internal abstract void SendResultsEndToPipe( SmiRecordBuffer recordBuffer, SmiEventSink eventSink );
 
        internal abstract void SetContextValue ( int key, object value );

        // Scratch LOB storage region
        internal virtual SmiStream GetScratchStream( SmiEventSink sink ) { 
            // Adding as of V3
 
            // Implement body with throw because there are only a couple of ways to get to this code: 
            //  1) Client is calling this method even though the server negotiated for V2- and hasn't implemented V3 yet.
            //  2) Server didn't implement V3, but negotiated V3+. 
            System.Data.Common.ADP.InternalError( System.Data.Common.ADP.InternalErrorCode.UnimplementedSMIMethod );
            return null;
        }
    } 
}
 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

Link Menu

Network programming in C#, Network Programming in VB.NET, Network Programming in .NET
This book is available now!
Buy at Amazon US or
Buy at Amazon UK