Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / fx / src / Data / System / Data / SqlClient / SqlClientWrapperSmiStreamChars.cs / 1 / SqlClientWrapperSmiStreamChars.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //----------------------------------------------------------------------------- namespace Microsoft.SqlServer.Server { using System; using System.Data.Common; using System.Data.SqlClient; using System.Data.SqlTypes; using System.Diagnostics; using System.IO; // Simple SqlStreamChars wrapper over SmiStream that handles server events on the // SqlClient side of Smi internal class SqlClientWrapperSmiStreamChars : SqlStreamChars { private SmiEventSink_Default _sink; private SmiStream _stream; internal SqlClientWrapperSmiStreamChars( SmiEventSink_Default sink, SmiStream stream ) { Debug.Assert( null != sink ); Debug.Assert( null != stream ); _sink = sink; _stream = stream; } public override bool IsNull { get { return null == _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(); if ( length > 0 ) return length / sizeof( char ); else return length; } } public override long Position { get { long position = _stream.GetPosition( _sink ) / sizeof( char ); _sink.ProcessMessagesAndThrow(); return position; } set { if ( value < 0 ) { throw ADP.ArgumentOutOfRange("Position"); } _stream.SetPosition( _sink, value * sizeof( char ) ); _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 * sizeof( char ), origin ); _sink.ProcessMessagesAndThrow(); return result; } public override void SetLength(long value) { if ( value < 0 ) { throw ADP.ArgumentOutOfRange("value"); } _stream.SetLength( _sink, value * sizeof( char ) ); _sink.ProcessMessagesAndThrow(); } public override int Read(char[] buffer, int offset, int count) { int bytesRead = _stream.Read( _sink, buffer, offset * sizeof( char ), count ); _sink.ProcessMessagesAndThrow(); return bytesRead; } public override void Write(char[] buffer, int offset, int count) { _stream.Write( _sink, buffer, offset, count ); _sink.ProcessMessagesAndThrow(); } // Convenience methods to allow simple pulling/pushing of raw bytes internal int Read(byte[] buffer, int offset, int count) { int bytesRead = _stream.Read( _sink, buffer, offset, count ); _sink.ProcessMessagesAndThrow(); return bytesRead; } internal 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. // //[....] //[....] //----------------------------------------------------------------------------- namespace Microsoft.SqlServer.Server { using System; using System.Data.Common; using System.Data.SqlClient; using System.Data.SqlTypes; using System.Diagnostics; using System.IO; // Simple SqlStreamChars wrapper over SmiStream that handles server events on the // SqlClient side of Smi internal class SqlClientWrapperSmiStreamChars : SqlStreamChars { private SmiEventSink_Default _sink; private SmiStream _stream; internal SqlClientWrapperSmiStreamChars( SmiEventSink_Default sink, SmiStream stream ) { Debug.Assert( null != sink ); Debug.Assert( null != stream ); _sink = sink; _stream = stream; } public override bool IsNull { get { return null == _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(); if ( length > 0 ) return length / sizeof( char ); else return length; } } public override long Position { get { long position = _stream.GetPosition( _sink ) / sizeof( char ); _sink.ProcessMessagesAndThrow(); return position; } set { if ( value < 0 ) { throw ADP.ArgumentOutOfRange("Position"); } _stream.SetPosition( _sink, value * sizeof( char ) ); _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 * sizeof( char ), origin ); _sink.ProcessMessagesAndThrow(); return result; } public override void SetLength(long value) { if ( value < 0 ) { throw ADP.ArgumentOutOfRange("value"); } _stream.SetLength( _sink, value * sizeof( char ) ); _sink.ProcessMessagesAndThrow(); } public override int Read(char[] buffer, int offset, int count) { int bytesRead = _stream.Read( _sink, buffer, offset * sizeof( char ), count ); _sink.ProcessMessagesAndThrow(); return bytesRead; } public override void Write(char[] buffer, int offset, int count) { _stream.Write( _sink, buffer, offset, count ); _sink.ProcessMessagesAndThrow(); } // Convenience methods to allow simple pulling/pushing of raw bytes internal int Read(byte[] buffer, int offset, int count) { int bytesRead = _stream.Read( _sink, buffer, offset, count ); _sink.ProcessMessagesAndThrow(); return bytesRead; } internal 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.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ConfigXmlWhitespace.cs
- PassportPrincipal.cs
- StatusBarItemAutomationPeer.cs
- DesignerCategoryAttribute.cs
- SequentialWorkflowHeaderFooter.cs
- SoapCodeExporter.cs
- FaultHandlingFilter.cs
- ErrorEventArgs.cs
- OdbcConnectionFactory.cs
- NotifyInputEventArgs.cs
- CodeTypeOfExpression.cs
- EndpointDiscoveryMetadataCD1.cs
- COM2IVsPerPropertyBrowsingHandler.cs
- SyncOperationState.cs
- RelatedPropertyManager.cs
- GroupBoxRenderer.cs
- DataRecordInternal.cs
- SystemDropShadowChrome.cs
- MultipleViewProviderWrapper.cs
- Win32PrintDialog.cs
- TableCellCollection.cs
- _ConnectStream.cs
- ZipIOBlockManager.cs
- SpeechRecognitionEngine.cs
- ByteViewer.cs
- SecurityRequiresReviewAttribute.cs
- LocalizabilityAttribute.cs
- AccessibleObject.cs
- DesignerDataStoredProcedure.cs
- CryptoStream.cs
- LogicalTreeHelper.cs
- CompilerError.cs
- JobCollate.cs
- ViewGenerator.cs
- StringSorter.cs
- TabControlDesigner.cs
- DataGridBoolColumn.cs
- AspCompat.cs
- SqlMetaData.cs
- EventLogTraceListener.cs
- DBSqlParserTableCollection.cs
- SourceSwitch.cs
- WorkItem.cs
- DeferrableContent.cs
- Size3D.cs
- ResponseStream.cs
- WorkflowViewService.cs
- HtmlWindow.cs
- ContentPlaceHolder.cs
- WindowsTokenRoleProvider.cs
- XmlNodeList.cs
- AutomationIdentifierGuids.cs
- Environment.cs
- IndexingContentUnit.cs
- SchemaExporter.cs
- _TimerThread.cs
- CollectionChangedEventManager.cs
- DispatcherTimer.cs
- AmbientLight.cs
- ServicesSection.cs
- SmiRecordBuffer.cs
- OrderedEnumerableRowCollection.cs
- ExtensionFile.cs
- TextTreeInsertElementUndoUnit.cs
- PermissionRequestEvidence.cs
- DataGridViewCellCollection.cs
- _ServiceNameStore.cs
- MarshalDirectiveException.cs
- RepeatBehavior.cs
- ErrorHandler.cs
- EventSetterHandlerConverter.cs
- WinHttpWebProxyFinder.cs
- WindowsListViewItemCheckBox.cs
- DataGridLengthConverter.cs
- DataConnectionHelper.cs
- Byte.cs
- ValidatedControlConverter.cs
- AppDomainFactory.cs
- SafeEventLogReadHandle.cs
- TypeDelegator.cs
- CustomError.cs
- TableItemPatternIdentifiers.cs
- EventToken.cs
- FlowDocumentReader.cs
- WebPartMinimizeVerb.cs
- Lasso.cs
- ApplicationException.cs
- FileDetails.cs
- SequenceDesignerAccessibleObject.cs
- lengthconverter.cs
- SqlCacheDependencyDatabase.cs
- DataGridViewRowsRemovedEventArgs.cs
- ReadOnlyPropertyMetadata.cs
- ContravarianceAdapter.cs
- Profiler.cs
- DateTimeOffsetConverter.cs
- MD5CryptoServiceProvider.cs
- EncryptedPackage.cs
- CodeCatchClause.cs
- AssemblyNameProxy.cs