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 / Odbc / OdbcConnectionFactory.cs / 1 / OdbcConnectionFactory.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //----------------------------------------------------------------------------- namespace System.Data.Odbc { using System; using System.Data.Common; using System.Data.ProviderBase; using System.Diagnostics; using System.Collections.Specialized; using System.Configuration; using System.IO; sealed internal class OdbcConnectionFactory : DbConnectionFactory { private OdbcConnectionFactory() : base() {} // At this time, the ODBC Provider doesn't have any connection pool counters // because we'd only confuse people with "non-pooled" connections that are // actually being pooled by the native pooler. private const string _MetaData = ":MetaDataXml"; private const string _defaultMetaDataXml = "defaultMetaDataXml"; public static readonly OdbcConnectionFactory SingletonInstance = new OdbcConnectionFactory(); override public DbProviderFactory ProviderFactory { get { return OdbcFactory.Instance; } } override protected DbConnectionInternal CreateConnection(DbConnectionOptions options, object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject) { DbConnectionInternal result = new OdbcConnectionOpen(owningObject as OdbcConnection, options as OdbcConnectionString); return result; } override protected DbConnectionOptions CreateConnectionOptions(string connectionString, DbConnectionOptions previous) { Debug.Assert(!ADP.IsEmpty(connectionString), "empty connectionString"); OdbcConnectionString result = new OdbcConnectionString(connectionString, (null != previous)); return result; } override protected DbConnectionPoolGroupOptions CreateConnectionPoolGroupOptions( DbConnectionOptions connectionOptions ) { // At this time, the ODBC provider only supports native pooling so we // simply return NULL to indicate that. return null; } override internal DbConnectionPoolGroupProviderInfo CreateConnectionPoolGroupProviderInfo (DbConnectionOptions connectionOptions) { return new OdbcConnectionPoolGroupProviderInfo(); } override protected DbMetaDataFactory CreateMetaDataFactory(DbConnectionInternal internalConnection, out bool cacheMetaDataFactory){ Debug.Assert (internalConnection != null,"internalConnection may not be null."); cacheMetaDataFactory = false; OdbcConnection odbcOuterConnection = ((OdbcConnectionOpen)internalConnection).OuterConnection; Debug.Assert(odbcOuterConnection != null,"outer connection may not be null."); NameValueCollection settings = (NameValueCollection)PrivilegedConfigurationManager.GetSection("system.data.odbc"); Stream XMLStream =null; // get the DBMS Name object driverName = null; string stringValue = odbcOuterConnection.GetInfoStringUnhandled(ODBC32.SQL_INFO.DRIVER_NAME); if (stringValue != null) { driverName = stringValue; } if (settings != null){ string [] values = null; string metaDataXML = null; // first try to get the provider specific xml // if driver name is not supported we can't build the settings key needed to // get the provider specific XML path if (driverName != null){ metaDataXML = ((string)driverName) + _MetaData; values = settings.GetValues(metaDataXML); } // if we did not find provider specific xml see if there is new default xml if (values == null) { metaDataXML = _defaultMetaDataXml; values = settings.GetValues(metaDataXML); } // If there is an XML file get it if (values != null) { XMLStream = ADP.GetXmlStreamFromValues(values,metaDataXML); } } // use the embedded xml if the user did not over ride it if (XMLStream == null){ XMLStream = System.Reflection.Assembly.GetExecutingAssembly().GetManifestResourceStream("System.Data.Odbc.OdbcMetaData.xml"); cacheMetaDataFactory = true; } Debug.Assert (XMLStream != null,"XMLstream may not be null."); String versionString = odbcOuterConnection.GetInfoStringUnhandled(ODBC32.SQL_INFO.DBMS_VER); return new OdbcMetaDataFactory (XMLStream, versionString, versionString, odbcOuterConnection); } override internal DbConnectionPoolGroup GetConnectionPoolGroup(DbConnection connection) { OdbcConnection c = (connection as OdbcConnection); if (null != c) { return c.PoolGroup; } return null; } override internal DbConnectionInternal GetInnerConnection(DbConnection connection) { OdbcConnection c = (connection as OdbcConnection); if (null != c) { return c.InnerConnection; } return null; } override protected int GetObjectId(DbConnection connection) { OdbcConnection c = (connection as OdbcConnection); if (null != c) { return c.ObjectID; } return 0; } override internal void PermissionDemand(DbConnection outerConnection) { OdbcConnection c = (outerConnection as OdbcConnection); if (null != c) { c.PermissionDemand(); } } override internal void SetConnectionPoolGroup(DbConnection outerConnection, DbConnectionPoolGroup poolGroup) { OdbcConnection c = (outerConnection as OdbcConnection); if (null != c) { c.PoolGroup = poolGroup; } } override internal void SetInnerConnectionEvent(DbConnection owningObject, DbConnectionInternal to) { OdbcConnection c = (owningObject as OdbcConnection); if (null != c) { c.SetInnerConnectionEvent(to); } } override internal bool SetInnerConnectionFrom(DbConnection owningObject, DbConnectionInternal to, DbConnectionInternal from) { OdbcConnection c = (owningObject as OdbcConnection); if (null != c) { return c.SetInnerConnectionFrom(to, from); } return false; } override internal void SetInnerConnectionTo(DbConnection owningObject, DbConnectionInternal to) { OdbcConnection c = (owningObject as OdbcConnection); if (null != c) { c.SetInnerConnectionTo(to); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //----------------------------------------------------------------------------- namespace System.Data.Odbc { using System; using System.Data.Common; using System.Data.ProviderBase; using System.Diagnostics; using System.Collections.Specialized; using System.Configuration; using System.IO; sealed internal class OdbcConnectionFactory : DbConnectionFactory { private OdbcConnectionFactory() : base() {} // At this time, the ODBC Provider doesn't have any connection pool counters // because we'd only confuse people with "non-pooled" connections that are // actually being pooled by the native pooler. private const string _MetaData = ":MetaDataXml"; private const string _defaultMetaDataXml = "defaultMetaDataXml"; public static readonly OdbcConnectionFactory SingletonInstance = new OdbcConnectionFactory(); override public DbProviderFactory ProviderFactory { get { return OdbcFactory.Instance; } } override protected DbConnectionInternal CreateConnection(DbConnectionOptions options, object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject) { DbConnectionInternal result = new OdbcConnectionOpen(owningObject as OdbcConnection, options as OdbcConnectionString); return result; } override protected DbConnectionOptions CreateConnectionOptions(string connectionString, DbConnectionOptions previous) { Debug.Assert(!ADP.IsEmpty(connectionString), "empty connectionString"); OdbcConnectionString result = new OdbcConnectionString(connectionString, (null != previous)); return result; } override protected DbConnectionPoolGroupOptions CreateConnectionPoolGroupOptions( DbConnectionOptions connectionOptions ) { // At this time, the ODBC provider only supports native pooling so we // simply return NULL to indicate that. return null; } override internal DbConnectionPoolGroupProviderInfo CreateConnectionPoolGroupProviderInfo (DbConnectionOptions connectionOptions) { return new OdbcConnectionPoolGroupProviderInfo(); } override protected DbMetaDataFactory CreateMetaDataFactory(DbConnectionInternal internalConnection, out bool cacheMetaDataFactory){ Debug.Assert (internalConnection != null,"internalConnection may not be null."); cacheMetaDataFactory = false; OdbcConnection odbcOuterConnection = ((OdbcConnectionOpen)internalConnection).OuterConnection; Debug.Assert(odbcOuterConnection != null,"outer connection may not be null."); NameValueCollection settings = (NameValueCollection)PrivilegedConfigurationManager.GetSection("system.data.odbc"); Stream XMLStream =null; // get the DBMS Name object driverName = null; string stringValue = odbcOuterConnection.GetInfoStringUnhandled(ODBC32.SQL_INFO.DRIVER_NAME); if (stringValue != null) { driverName = stringValue; } if (settings != null){ string [] values = null; string metaDataXML = null; // first try to get the provider specific xml // if driver name is not supported we can't build the settings key needed to // get the provider specific XML path if (driverName != null){ metaDataXML = ((string)driverName) + _MetaData; values = settings.GetValues(metaDataXML); } // if we did not find provider specific xml see if there is new default xml if (values == null) { metaDataXML = _defaultMetaDataXml; values = settings.GetValues(metaDataXML); } // If there is an XML file get it if (values != null) { XMLStream = ADP.GetXmlStreamFromValues(values,metaDataXML); } } // use the embedded xml if the user did not over ride it if (XMLStream == null){ XMLStream = System.Reflection.Assembly.GetExecutingAssembly().GetManifestResourceStream("System.Data.Odbc.OdbcMetaData.xml"); cacheMetaDataFactory = true; } Debug.Assert (XMLStream != null,"XMLstream may not be null."); String versionString = odbcOuterConnection.GetInfoStringUnhandled(ODBC32.SQL_INFO.DBMS_VER); return new OdbcMetaDataFactory (XMLStream, versionString, versionString, odbcOuterConnection); } override internal DbConnectionPoolGroup GetConnectionPoolGroup(DbConnection connection) { OdbcConnection c = (connection as OdbcConnection); if (null != c) { return c.PoolGroup; } return null; } override internal DbConnectionInternal GetInnerConnection(DbConnection connection) { OdbcConnection c = (connection as OdbcConnection); if (null != c) { return c.InnerConnection; } return null; } override protected int GetObjectId(DbConnection connection) { OdbcConnection c = (connection as OdbcConnection); if (null != c) { return c.ObjectID; } return 0; } override internal void PermissionDemand(DbConnection outerConnection) { OdbcConnection c = (outerConnection as OdbcConnection); if (null != c) { c.PermissionDemand(); } } override internal void SetConnectionPoolGroup(DbConnection outerConnection, DbConnectionPoolGroup poolGroup) { OdbcConnection c = (outerConnection as OdbcConnection); if (null != c) { c.PoolGroup = poolGroup; } } override internal void SetInnerConnectionEvent(DbConnection owningObject, DbConnectionInternal to) { OdbcConnection c = (owningObject as OdbcConnection); if (null != c) { c.SetInnerConnectionEvent(to); } } override internal bool SetInnerConnectionFrom(DbConnection owningObject, DbConnectionInternal to, DbConnectionInternal from) { OdbcConnection c = (owningObject as OdbcConnection); if (null != c) { return c.SetInnerConnectionFrom(to, from); } return false; } override internal void SetInnerConnectionTo(DbConnection owningObject, DbConnectionInternal to) { OdbcConnection c = (owningObject as OdbcConnection); if (null != c) { c.SetInnerConnectionTo(to); } } } } // 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
- Avt.cs
- PolyQuadraticBezierSegmentFigureLogic.cs
- ProtocolInformationReader.cs
- ClientEventManager.cs
- MergablePropertyAttribute.cs
- PathSegmentCollection.cs
- ReadOnlyMetadataCollection.cs
- XmlDocumentSurrogate.cs
- OciEnlistContext.cs
- XsdBuildProvider.cs
- PriorityBindingExpression.cs
- IteratorFilter.cs
- XmlNullResolver.cs
- XslAst.cs
- TextEditorMouse.cs
- _NTAuthentication.cs
- Rule.cs
- TextLineResult.cs
- TextServicesPropertyRanges.cs
- InternalEnumValidatorAttribute.cs
- CodeExpressionCollection.cs
- RuntimeHelpers.cs
- UnsafeNativeMethods.cs
- RadioButtonAutomationPeer.cs
- BinaryNegotiation.cs
- ClientScriptManager.cs
- SqlDataReader.cs
- LogStream.cs
- InputReferenceExpression.cs
- Wow64ConfigurationLoader.cs
- AffineTransform3D.cs
- ClientRolePrincipal.cs
- Italic.cs
- DBPropSet.cs
- DeviceSpecificChoice.cs
- DefaultTraceListener.cs
- ClientWindowsAuthenticationMembershipProvider.cs
- SystemWebExtensionsSectionGroup.cs
- LocalizationParserHooks.cs
- TextElementEnumerator.cs
- ADMembershipProvider.cs
- COM2Properties.cs
- SettingsSavedEventArgs.cs
- XmlTextWriter.cs
- Html32TextWriter.cs
- PersonalizableAttribute.cs
- StringConverter.cs
- ComplexBindingPropertiesAttribute.cs
- Decimal.cs
- NativeMethods.cs
- TypeExtensions.cs
- IIS7UserPrincipal.cs
- ObjectComplexPropertyMapping.cs
- FormatException.cs
- TextPointer.cs
- WinEventHandler.cs
- EventDrivenDesigner.cs
- HasCopySemanticsAttribute.cs
- Int16AnimationBase.cs
- DBSqlParserTableCollection.cs
- AvTraceFormat.cs
- BaseDataList.cs
- PackageStore.cs
- StyleTypedPropertyAttribute.cs
- CellCreator.cs
- XmlDataSourceNodeDescriptor.cs
- ByteStreamMessageEncodingElement.cs
- Int32CollectionValueSerializer.cs
- NamespaceTable.cs
- InstanceOwnerException.cs
- NTAccount.cs
- UserControl.cs
- RectValueSerializer.cs
- JsonReaderWriterFactory.cs
- TrackingDataItem.cs
- XsdBuilder.cs
- LoginDesigner.cs
- BinaryFormatter.cs
- ExpandButtonVisibilityConverter.cs
- RefType.cs
- DBSqlParserColumnCollection.cs
- DataService.cs
- WebPartZoneCollection.cs
- FactoryGenerator.cs
- MergablePropertyAttribute.cs
- PinnedBufferMemoryStream.cs
- SortExpressionBuilder.cs
- Collection.cs
- CallbackHandler.cs
- PrePostDescendentsWalker.cs
- MatrixAnimationUsingPath.cs
- BezierSegment.cs
- TagPrefixCollection.cs
- ApplicationTrust.cs
- BitmapEffectInputConnector.cs
- Int16KeyFrameCollection.cs
- AdornerHitTestResult.cs
- AlternateView.cs
- Size.cs
- DataGridPagerStyle.cs