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Imported Upstream version 4.6.0.125
Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4
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//------------------------------------------------------------------------------
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// <copyright file="SmiContext.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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// <owner current="true" primary="true">[....]</owner>
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// <owner current="true" primary="false">[....]</owner>
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//------------------------------------------------------------------------------
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namespace Microsoft.SqlServer.Server {
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using System;
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using System.Data;
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using System.Data.Sql;
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using System.Data.SqlTypes;
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using System.Security.Principal;
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// NOTE: connection, transaction and context pipe operations could be
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// encapsulated in their own classes, and should if they get complex
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// (transaction is borderline at this point).
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internal abstract class SmiContext {
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internal abstract event EventHandler OutOfScope;
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internal abstract SmiConnection ContextConnection { get; }
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internal abstract long ContextTransactionId { get; }
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internal abstract System.Transactions.Transaction ContextTransaction { get; }
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internal abstract bool HasContextPipe { get; }
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internal abstract WindowsIdentity WindowsIdentity { get; }
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internal abstract SmiRecordBuffer CreateRecordBuffer (
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SmiExtendedMetaData[] columnMetaData, // Extended metadata because it requires names, udttypename and xmlschemaname ignored
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SmiEventSink eventSink
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);
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internal abstract SmiRequestExecutor CreateRequestExecutor (
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string commandText,
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CommandType commandType,
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SmiParameterMetaData[] parameterMetaData,
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SmiEventSink eventSink
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);
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//
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internal abstract object GetContextValue ( int key );
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internal abstract void GetTriggerInfo (
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SmiEventSink eventSink,
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out bool[] columnsUpdated,
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out TriggerAction action,
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out SqlXml eventInstanceData
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);
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internal abstract void SendMessageToPipe( string message, SmiEventSink eventSink );
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internal abstract void SendResultsStartToPipe( SmiRecordBuffer recordBuffer, SmiEventSink eventSink );
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internal abstract void SendResultsRowToPipe( SmiRecordBuffer recordBuffer, SmiEventSink eventSink );
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internal abstract void SendResultsEndToPipe( SmiRecordBuffer recordBuffer, SmiEventSink eventSink );
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internal abstract void SetContextValue ( int key, object value );
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// Scratch LOB storage region
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internal virtual SmiStream GetScratchStream( SmiEventSink sink ) {
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// Adding as of V3
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// Implement body with throw because there are only a couple of ways to get to this code:
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// 1) Client is calling this method even though the server negotiated for V2- and hasn't implemented V3 yet.
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// 2) Server didn't implement V3, but negotiated V3+.
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System.Data.Common.ADP.InternalError( System.Data.Common.ADP.InternalErrorCode.UnimplementedSMIMethod );
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return null;
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}
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}
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}
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