Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Data / System / Data / OleDb / OleDbConnectionFactory.cs / 1305376 / 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; using System.Runtime.Versioning; 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; } // SxS (VSDD 545786): metadata files are opened from <.NetRuntimeFolder>\CONFIG\// this operation is safe in SxS because the file is opened in read-only mode and each NDP runtime accesses its own copy of the metadata // under the runtime folder. [ResourceExposure(ResourceScope.None)] [ResourceConsumption(ResourceScope.Machine, ResourceScope.Machine)] 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; using System.Runtime.Versioning; 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; } // SxS (VSDD 545786): metadata files are opened from <.NetRuntimeFolder>\CONFIG\// this operation is safe in SxS because the file is opened in read-only mode and each NDP runtime accesses its own copy of the metadata // under the runtime folder. [ResourceExposure(ResourceScope.None)] [ResourceConsumption(ResourceScope.Machine, ResourceScope.Machine)] 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
- PathFigureCollection.cs
- ValueUnavailableException.cs
- DbProviderFactories.cs
- ImageDesigner.cs
- NamedPipeChannelFactory.cs
- WindowsRegion.cs
- WebPartDeleteVerb.cs
- UnauthorizedWebPart.cs
- FacetValues.cs
- DeliveryRequirementsAttribute.cs
- QilTernary.cs
- XmlSignatureProperties.cs
- ObfuscationAttribute.cs
- SystemThemeKey.cs
- SmtpNegotiateAuthenticationModule.cs
- HyperLinkField.cs
- FixUpCollection.cs
- ColumnTypeConverter.cs
- SelectingProviderEventArgs.cs
- OperationContractAttribute.cs
- CompiledRegexRunnerFactory.cs
- DebugHandleTracker.cs
- StylusButtonCollection.cs
- FileFormatException.cs
- XPathCompileException.cs
- WebPartEditorApplyVerb.cs
- CheckBoxBaseAdapter.cs
- RoleGroupCollection.cs
- CopyAction.cs
- AutomationPatternInfo.cs
- CompModSwitches.cs
- XmlSchemaAnyAttribute.cs
- SettingsContext.cs
- SystemResourceKey.cs
- ObjectDataSourceMethodEventArgs.cs
- UdpUtility.cs
- DirectionalLight.cs
- SchemaCollectionCompiler.cs
- FixedSOMGroup.cs
- ImpersonationContext.cs
- Pointer.cs
- Contracts.cs
- GCHandleCookieTable.cs
- AtlasWeb.Designer.cs
- ProcessProtocolHandler.cs
- DetailsViewPageEventArgs.cs
- HttpPostedFileWrapper.cs
- SmtpSpecifiedPickupDirectoryElement.cs
- HashCodeCombiner.cs
- TokenBasedSet.cs
- BStrWrapper.cs
- AutomationProperties.cs
- EmptyEnumerable.cs
- Drawing.cs
- HttpWebRequest.cs
- DateTimeFormatInfo.cs
- path.cs
- BindingValueChangedEventArgs.cs
- HtmlInputPassword.cs
- SslStreamSecurityUpgradeProvider.cs
- DataSetMappper.cs
- DiagnosticSection.cs
- CancellableEnumerable.cs
- PartialList.cs
- fixedPageContentExtractor.cs
- InputProcessorProfilesLoader.cs
- contentDescriptor.cs
- SplayTreeNode.cs
- FusionWrap.cs
- ElementMarkupObject.cs
- TextEditorLists.cs
- StreamGeometry.cs
- Privilege.cs
- FontStyles.cs
- DataDocumentXPathNavigator.cs
- NameSpaceExtractor.cs
- ServiceActivationException.cs
- EntityStoreSchemaGenerator.cs
- DataIdProcessor.cs
- Opcode.cs
- TextSearch.cs
- Hyperlink.cs
- StrokeCollectionDefaultValueFactory.cs
- Stream.cs
- GradientStopCollection.cs
- FormView.cs
- NativeRecognizer.cs
- SqlDataSource.cs
- StringStorage.cs
- ObjectManager.cs
- NonVisualControlAttribute.cs
- storepermissionattribute.cs
- UrlPath.cs
- InteropBitmapSource.cs
- AspNetHostingPermission.cs
- Expander.cs
- MailHeaderInfo.cs
- ArrayMergeHelper.cs
- ToolStripArrowRenderEventArgs.cs
- Utils.cs