SqlClientWrapperSmiStream.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / Data / System / Data / SqlClient / SqlClientWrapperSmiStream.cs / 1 / SqlClientWrapperSmiStream.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
// [....]
//----------------------------------------------------------------------------- 
 
namespace Microsoft.SqlServer.Server {
    using System; 
    using System.Data.Common;
    using System.Diagnostics;
    using System.IO;
 
    // Simple wrapper over SmiStream that handles server events on the SqlClient side of Smi
    internal class SqlClientWrapperSmiStream : Stream { 
 
        private SmiEventSink_Default    _sink;
        private SmiStream               _stream; 

        internal SqlClientWrapperSmiStream( SmiEventSink_Default sink, SmiStream stream ) {
            Debug.Assert( null != sink );
            Debug.Assert( null != stream ); 
            _sink = sink;
            _stream = stream; 
        } 

        public override bool CanRead { 
            get {
                return _stream.CanRead;
            }
        } 

        // If CanSeek is false, Position, Seek, Length, and SetLength should throw. 
        public override bool CanSeek { 
            get {
                return _stream.CanSeek; 
            }
        }

        public override bool CanWrite { 
            get {
                return _stream.CanWrite; 
            } 
        }
 
        public override long Length {
            get {
                long length = _stream.GetLength( _sink );
                _sink.ProcessMessagesAndThrow(); 
                return length;
            } 
        } 

        public override long Position { 
            get {
                long position = _stream.GetPosition( _sink );
                _sink.ProcessMessagesAndThrow();
                return position; 
            }
            set { 
                _stream.SetPosition( _sink, value ); 
                _sink.ProcessMessagesAndThrow();
            } 
        }

        public override void Flush() {
            _stream.Flush( _sink ); 
            _sink.ProcessMessagesAndThrow();
        } 
 
        public override long Seek(long offset, SeekOrigin origin) {
            long result = _stream.Seek( _sink, offset, origin ); 
            _sink.ProcessMessagesAndThrow();
            return result;
        }
 
        public override void SetLength(long value) {
            _stream.SetLength( _sink, value ); 
            _sink.ProcessMessagesAndThrow(); 
        }
 
        public override int Read(byte[] buffer, int offset, int count) {
            int bytesRead = _stream.Read( _sink, buffer, offset, count );
            _sink.ProcessMessagesAndThrow();
            return bytesRead; 
        }
 
        public override void Write(byte[] buffer, int offset, int count) { 
            _stream.Write( _sink, buffer, offset, count );
            _sink.ProcessMessagesAndThrow(); 
        }
    }

} 

 

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

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