Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / Data / System / Data / OleDb / OleDbConnectionFactory.cs / 1 / OleDbConnectionFactory.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //----------------------------------------------------------------------------- namespace System.Data.OleDb { 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 OleDbConnectionFactory : DbConnectionFactory { private OleDbConnectionFactory() : base() {} // At this time, the OleDb Managed 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 _metaDataXml = ":MetaDataXml"; private const string _defaultMetaDataXml = "defaultMetaDataXml"; public static readonly OleDbConnectionFactory SingletonInstance = new OleDbConnectionFactory(); override public DbProviderFactory ProviderFactory { get { return OleDbFactory.Instance; } } override protected DbConnectionInternal CreateConnection(DbConnectionOptions options, object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject) { DbConnectionInternal result = new OleDbConnectionInternal((OleDbConnectionString)options, (OleDbConnection)owningObject); return result; } protected override DbConnectionOptions CreateConnectionOptions(string connectionString, DbConnectionOptions previous) { Debug.Assert(!ADP.IsEmpty(connectionString), "null connectionString"); OleDbConnectionString result = new OleDbConnectionString(connectionString, (null != previous)); return result; } override protected DbMetaDataFactory CreateMetaDataFactory(DbConnectionInternal internalConnection, out bool cacheMetaDataFactory){ Debug.Assert (internalConnection != null,"internalConnection may not be null."); cacheMetaDataFactory = false; OleDbConnectionInternal oleDbInternalConnection = (OleDbConnectionInternal) internalConnection; OleDbConnection oleDbOuterConnection = oleDbInternalConnection.Connection; Debug.Assert(oleDbOuterConnection != null,"outer connection may not be null."); NameValueCollection settings = (NameValueCollection)PrivilegedConfigurationManager.GetSection("system.data.oledb"); Stream XMLStream =null; String providerFileName = oleDbOuterConnection.GetDataSourcePropertyValue(OleDbPropertySetGuid.DataSourceInfo,ODB.DBPROP_PROVIDERFILENAME) as string; if (settings != null){ string [] values = null; string metaDataXML = null; // first try to get the provider specific xml // if providerfilename is not supported we can't build the settings key needed to // get the provider specific XML path if (providerFileName != null){ metaDataXML = providerFileName + _metaDataXml; 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 new XML get it if (values != null) { XMLStream = ADP.GetXmlStreamFromValues(values,metaDataXML); } } // if the xml was not obtained from machine.config use the embedded XML resource if (XMLStream == null) { XMLStream = System.Reflection.Assembly.GetExecutingAssembly().GetManifestResourceStream("System.Data.OleDb.OleDbMetaData.xml"); cacheMetaDataFactory = true; } Debug.Assert (XMLStream != null,"XMLstream may not be null."); // using the ServerVersion as the NormalizedServerVersion. Doing this for two reasons // 1) The Spec for DBPROP_DBMSVER normalizes the ServerVersion // 2) for OLE DB its the only game in town return new OleDbMetaDataFactory (XMLStream, oleDbInternalConnection.ServerVersion, oleDbInternalConnection.ServerVersion, oleDbInternalConnection.GetSchemaRowsetInformation()); } override protected DbConnectionPoolGroupOptions CreateConnectionPoolGroupOptions(DbConnectionOptions connectionOptions) { return null; } override internal DbConnectionPoolGroupProviderInfo CreateConnectionPoolGroupProviderInfo (DbConnectionOptions connectionOptions) { return new OleDbConnectionPoolGroupProviderInfo(); } override internal DbConnectionPoolGroup GetConnectionPoolGroup(DbConnection connection) { OleDbConnection c = (connection as OleDbConnection); if (null != c) { return c.PoolGroup; } return null; } override internal DbConnectionInternal GetInnerConnection(DbConnection connection) { OleDbConnection c = (connection as OleDbConnection); if (null != c) { return c.InnerConnection; } return null; } override protected int GetObjectId(DbConnection connection) { OleDbConnection c = (connection as OleDbConnection); if (null != c) { return c.ObjectID; } return 0; } override internal void PermissionDemand(DbConnection outerConnection) { OleDbConnection c = (outerConnection as OleDbConnection); if (null != c) { c.PermissionDemand(); } } override internal void SetConnectionPoolGroup(DbConnection outerConnection, DbConnectionPoolGroup poolGroup) { OleDbConnection c = (outerConnection as OleDbConnection); if (null != c) { c.PoolGroup = poolGroup; } } override internal void SetInnerConnectionEvent(DbConnection owningObject, DbConnectionInternal to) { OleDbConnection c = (owningObject as OleDbConnection); if (null != c) { c.SetInnerConnectionEvent(to); } } override internal bool SetInnerConnectionFrom(DbConnection owningObject, DbConnectionInternal to, DbConnectionInternal from) { OleDbConnection c = (owningObject as OleDbConnection); if (null != c) { return c.SetInnerConnectionFrom(to, from); } return false; } override internal void SetInnerConnectionTo(DbConnection owningObject, DbConnectionInternal to) { OleDbConnection c = (owningObject as OleDbConnection); 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.OleDb { 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 OleDbConnectionFactory : DbConnectionFactory { private OleDbConnectionFactory() : base() {} // At this time, the OleDb Managed 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 _metaDataXml = ":MetaDataXml"; private const string _defaultMetaDataXml = "defaultMetaDataXml"; public static readonly OleDbConnectionFactory SingletonInstance = new OleDbConnectionFactory(); override public DbProviderFactory ProviderFactory { get { return OleDbFactory.Instance; } } override protected DbConnectionInternal CreateConnection(DbConnectionOptions options, object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject) { DbConnectionInternal result = new OleDbConnectionInternal((OleDbConnectionString)options, (OleDbConnection)owningObject); return result; } protected override DbConnectionOptions CreateConnectionOptions(string connectionString, DbConnectionOptions previous) { Debug.Assert(!ADP.IsEmpty(connectionString), "null connectionString"); OleDbConnectionString result = new OleDbConnectionString(connectionString, (null != previous)); return result; } override protected DbMetaDataFactory CreateMetaDataFactory(DbConnectionInternal internalConnection, out bool cacheMetaDataFactory){ Debug.Assert (internalConnection != null,"internalConnection may not be null."); cacheMetaDataFactory = false; OleDbConnectionInternal oleDbInternalConnection = (OleDbConnectionInternal) internalConnection; OleDbConnection oleDbOuterConnection = oleDbInternalConnection.Connection; Debug.Assert(oleDbOuterConnection != null,"outer connection may not be null."); NameValueCollection settings = (NameValueCollection)PrivilegedConfigurationManager.GetSection("system.data.oledb"); Stream XMLStream =null; String providerFileName = oleDbOuterConnection.GetDataSourcePropertyValue(OleDbPropertySetGuid.DataSourceInfo,ODB.DBPROP_PROVIDERFILENAME) as string; if (settings != null){ string [] values = null; string metaDataXML = null; // first try to get the provider specific xml // if providerfilename is not supported we can't build the settings key needed to // get the provider specific XML path if (providerFileName != null){ metaDataXML = providerFileName + _metaDataXml; 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 new XML get it if (values != null) { XMLStream = ADP.GetXmlStreamFromValues(values,metaDataXML); } } // if the xml was not obtained from machine.config use the embedded XML resource if (XMLStream == null) { XMLStream = System.Reflection.Assembly.GetExecutingAssembly().GetManifestResourceStream("System.Data.OleDb.OleDbMetaData.xml"); cacheMetaDataFactory = true; } Debug.Assert (XMLStream != null,"XMLstream may not be null."); // using the ServerVersion as the NormalizedServerVersion. Doing this for two reasons // 1) The Spec for DBPROP_DBMSVER normalizes the ServerVersion // 2) for OLE DB its the only game in town return new OleDbMetaDataFactory (XMLStream, oleDbInternalConnection.ServerVersion, oleDbInternalConnection.ServerVersion, oleDbInternalConnection.GetSchemaRowsetInformation()); } override protected DbConnectionPoolGroupOptions CreateConnectionPoolGroupOptions(DbConnectionOptions connectionOptions) { return null; } override internal DbConnectionPoolGroupProviderInfo CreateConnectionPoolGroupProviderInfo (DbConnectionOptions connectionOptions) { return new OleDbConnectionPoolGroupProviderInfo(); } override internal DbConnectionPoolGroup GetConnectionPoolGroup(DbConnection connection) { OleDbConnection c = (connection as OleDbConnection); if (null != c) { return c.PoolGroup; } return null; } override internal DbConnectionInternal GetInnerConnection(DbConnection connection) { OleDbConnection c = (connection as OleDbConnection); if (null != c) { return c.InnerConnection; } return null; } override protected int GetObjectId(DbConnection connection) { OleDbConnection c = (connection as OleDbConnection); if (null != c) { return c.ObjectID; } return 0; } override internal void PermissionDemand(DbConnection outerConnection) { OleDbConnection c = (outerConnection as OleDbConnection); if (null != c) { c.PermissionDemand(); } } override internal void SetConnectionPoolGroup(DbConnection outerConnection, DbConnectionPoolGroup poolGroup) { OleDbConnection c = (outerConnection as OleDbConnection); if (null != c) { c.PoolGroup = poolGroup; } } override internal void SetInnerConnectionEvent(DbConnection owningObject, DbConnectionInternal to) { OleDbConnection c = (owningObject as OleDbConnection); if (null != c) { c.SetInnerConnectionEvent(to); } } override internal bool SetInnerConnectionFrom(DbConnection owningObject, DbConnectionInternal to, DbConnectionInternal from) { OleDbConnection c = (owningObject as OleDbConnection); if (null != c) { return c.SetInnerConnectionFrom(to, from); } return false; } override internal void SetInnerConnectionTo(DbConnection owningObject, DbConnectionInternal to) { OleDbConnection c = (owningObject as OleDbConnection); 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
- ObjectListCommandsPage.cs
- CodeSubDirectoriesCollection.cs
- ObjectDataSourceFilteringEventArgs.cs
- X509Utils.cs
- ProfilePropertyNameValidator.cs
- DBNull.cs
- RowParagraph.cs
- HttpDigestClientCredential.cs
- SqlBulkCopyColumnMapping.cs
- MetadataArtifactLoader.cs
- TempEnvironment.cs
- Bits.cs
- WriterOutput.cs
- ContentOperations.cs
- ParseChildrenAsPropertiesAttribute.cs
- ForwardPositionQuery.cs
- TranslateTransform3D.cs
- Form.cs
- TransformerConfigurationWizardBase.cs
- ConfigurationLockCollection.cs
- ProviderUtil.cs
- PerformanceCounterPermissionEntry.cs
- DetailsViewRow.cs
- DocumentEventArgs.cs
- Compiler.cs
- DynamicValidatorEventArgs.cs
- SimpleColumnProvider.cs
- UnauthorizedWebPart.cs
- HtmlContainerControl.cs
- CryptoApi.cs
- WebConfigurationFileMap.cs
- StaticFileHandler.cs
- MetadataSerializer.cs
- JournalEntry.cs
- AlphaSortedEnumConverter.cs
- WebPartRestoreVerb.cs
- HostingEnvironmentException.cs
- dataobject.cs
- ScrollEvent.cs
- JpegBitmapEncoder.cs
- NullReferenceException.cs
- Menu.cs
- GroupBox.cs
- VariableQuery.cs
- ConfigurationStrings.cs
- JsonFormatReaderGenerator.cs
- VirtualDirectoryMappingCollection.cs
- XmlKeywords.cs
- DataFormats.cs
- LongSumAggregationOperator.cs
- UseLicense.cs
- HandlerMappingMemo.cs
- SystemIPAddressInformation.cs
- ObjectSecurity.cs
- HttpCookie.cs
- SynchronizationContext.cs
- DataSourceCacheDurationConverter.cs
- Italic.cs
- BrushConverter.cs
- DataSpaceManager.cs
- DependencyObject.cs
- SkewTransform.cs
- ProvidePropertyAttribute.cs
- ComponentResourceKeyConverter.cs
- UpdateManifestForBrowserApplication.cs
- FormatterConverter.cs
- HandlerFactoryWrapper.cs
- ZoneButton.cs
- CompensatableSequenceActivity.cs
- DataRowCollection.cs
- BindableAttribute.cs
- FreezableCollection.cs
- DataGridViewAccessibleObject.cs
- PageMediaSize.cs
- mediapermission.cs
- WebUtility.cs
- MobileRedirect.cs
- BamlLocalizableResource.cs
- DynamicDocumentPaginator.cs
- ImageListUtils.cs
- XmlSchemaParticle.cs
- XmlQueryContext.cs
- ResponseBodyWriter.cs
- SliderAutomationPeer.cs
- SID.cs
- SyndicationElementExtension.cs
- GrammarBuilderWildcard.cs
- AppLevelCompilationSectionCache.cs
- JoinCqlBlock.cs
- TextPointerBase.cs
- SplitContainer.cs
- HtmlTableCellCollection.cs
- GridViewSelectEventArgs.cs
- _IPv6Address.cs
- MetaForeignKeyColumn.cs
- DecoderFallback.cs
- DataGridViewCellConverter.cs
- XmlDocumentSerializer.cs
- IPGlobalProperties.cs
- DllNotFoundException.cs