//------------------------------------------------------------------------------
// <copyright file="SmiStream.cs" company="Microsoft">
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// </copyright>
// <owner current="true" primary="true">alazela</owner>
// <owner current="true" primary="false">stevesta</owner>
//------------------------------------------------------------------------------
 
// Stream-like object that uses SmiEventSink for server-side errors.
namespace Microsoft.SqlServer.Server {
    using System;
    using System.IO;
 
    internal abstract class SmiStream {
        public abstract bool CanRead {
            get;
        }
 
        // If CanSeek is false, Position, Seek, Length, and SetLength should throw.
        public abstract bool CanSeek {
            get;
        }
 
        public abstract bool CanWrite {
            get;
        }
 
        public abstract long GetLength( SmiEventSink sink );
 
        public abstract long GetPosition( SmiEventSink sink );
        public abstract void SetPosition( SmiEventSink sink, long position );
 
        public abstract void Flush( SmiEventSink sink );
 
        public abstract long Seek( SmiEventSink sink, long offset, SeekOrigin origin );
 
        public abstract void SetLength( SmiEventSink sink, long value );
 
        public abstract int Read( SmiEventSink sink, byte[] buffer, int offset, int count );
        public abstract void Write( SmiEventSink sink, byte[] buffer, int offset, int count );
 
        public abstract int Read( SmiEventSink sink, char[] buffer, int offset, int count );
        public abstract void Write( SmiEventSink sink, char[] buffer, int offset, int count );
    }
 
}