Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / Data / System / Data / ProviderBase / DbConnectionClosed.cs / 1 / DbConnectionClosed.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace System.Data.ProviderBase { using System; using System.ComponentModel; using System.Data; using System.Data.Common; using System.Diagnostics; using System.Globalization; using System.Threading; using SysTx = System.Transactions; abstract internal class DbConnectionClosed : DbConnectionInternal { // Construct an "empty" connection protected DbConnectionClosed(ConnectionState state, bool hidePassword, bool allowSetConnectionString) : base(state, hidePassword, allowSetConnectionString) { } override public string ServerVersion { get { throw ADP.ClosedConnectionError(); } } override protected void Activate(SysTx.Transaction transaction) { throw ADP.ClosedConnectionError(); } override public DbTransaction BeginTransaction(IsolationLevel il) { throw ADP.ClosedConnectionError(); } override public void ChangeDatabase(string database) { throw ADP.ClosedConnectionError(); } internal override void CloseConnection(DbConnection owningObject, DbConnectionFactory connectionFactory) { // not much to do here... } override protected void Deactivate() { throw ADP.ClosedConnectionError(); } override public void EnlistTransaction(SysTx.Transaction transaction) { throw ADP.ClosedConnectionError(); } override protected internal DataTable GetSchema(DbConnectionFactory factory, DbConnectionPoolGroup poolGroup, DbConnection outerConnection, string collectionName, string[] restrictions) { throw ADP.ClosedConnectionError(); } internal override void OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) { // Closed->Connecting: prevent set_ConnectionString during Open if (connectionFactory.SetInnerConnectionFrom(outerConnection, DbConnectionClosedConnecting.SingletonInstance, this)) { DbConnectionInternal openConnection = null; try { connectionFactory.PermissionDemand(outerConnection); openConnection = connectionFactory.GetConnection(outerConnection); } catch { // This should occure for all exceptions, even ADP.UnCatchableExceptions. connectionFactory.SetInnerConnectionTo(outerConnection, this); throw; } if (null == openConnection) { connectionFactory.SetInnerConnectionTo(outerConnection, this); throw ADP.InternalConnectionError(ADP.ConnectionError.GetConnectionReturnsNull); } connectionFactory.SetInnerConnectionEvent(outerConnection, openConnection); } } } abstract internal class DbConnectionBusy : DbConnectionClosed { protected DbConnectionBusy(ConnectionState state) : base(state, true, false) { } internal override void OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) { throw ADP.ConnectionAlreadyOpen(State); } } sealed internal class DbConnectionClosedBusy : DbConnectionBusy { // Closed Connection, Currently Busy - changing connection string internal static readonly DbConnectionInternal SingletonInstance = new DbConnectionClosedBusy(); // singleton object private DbConnectionClosedBusy() : base(ConnectionState.Closed) { } } sealed internal class DbConnectionOpenBusy : DbConnectionBusy { // Open Connection, Currently Busy - closing connection internal static readonly DbConnectionInternal SingletonInstance = new DbConnectionOpenBusy(); // singleton object private DbConnectionOpenBusy() : base(ConnectionState.Open) { } } sealed internal class DbConnectionClosedConnecting : DbConnectionBusy { // Closed Connection, Currently Connecting internal static readonly DbConnectionInternal SingletonInstance = new DbConnectionClosedConnecting(); // singleton object private DbConnectionClosedConnecting() : base(ConnectionState.Connecting) { } } sealed internal class DbConnectionClosedNeverOpened : DbConnectionClosed { // Closed Connection, Has Never Been Opened internal static readonly DbConnectionInternal SingletonInstance = new DbConnectionClosedNeverOpened(); // singleton object private DbConnectionClosedNeverOpened() : base(ConnectionState.Closed, false, true) { } } sealed internal class DbConnectionClosedPreviouslyOpened : DbConnectionClosed { // Closed Connection, Has Previously Been Opened internal static readonly DbConnectionInternal SingletonInstance = new DbConnectionClosedPreviouslyOpened(); // singleton object private DbConnectionClosedPreviouslyOpened() : base(ConnectionState.Closed, true, true) { } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace System.Data.ProviderBase { using System; using System.ComponentModel; using System.Data; using System.Data.Common; using System.Diagnostics; using System.Globalization; using System.Threading; using SysTx = System.Transactions; abstract internal class DbConnectionClosed : DbConnectionInternal { // Construct an "empty" connection protected DbConnectionClosed(ConnectionState state, bool hidePassword, bool allowSetConnectionString) : base(state, hidePassword, allowSetConnectionString) { } override public string ServerVersion { get { throw ADP.ClosedConnectionError(); } } override protected void Activate(SysTx.Transaction transaction) { throw ADP.ClosedConnectionError(); } override public DbTransaction BeginTransaction(IsolationLevel il) { throw ADP.ClosedConnectionError(); } override public void ChangeDatabase(string database) { throw ADP.ClosedConnectionError(); } internal override void CloseConnection(DbConnection owningObject, DbConnectionFactory connectionFactory) { // not much to do here... } override protected void Deactivate() { throw ADP.ClosedConnectionError(); } override public void EnlistTransaction(SysTx.Transaction transaction) { throw ADP.ClosedConnectionError(); } override protected internal DataTable GetSchema(DbConnectionFactory factory, DbConnectionPoolGroup poolGroup, DbConnection outerConnection, string collectionName, string[] restrictions) { throw ADP.ClosedConnectionError(); } internal override void OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) { // Closed->Connecting: prevent set_ConnectionString during Open if (connectionFactory.SetInnerConnectionFrom(outerConnection, DbConnectionClosedConnecting.SingletonInstance, this)) { DbConnectionInternal openConnection = null; try { connectionFactory.PermissionDemand(outerConnection); openConnection = connectionFactory.GetConnection(outerConnection); } catch { // This should occure for all exceptions, even ADP.UnCatchableExceptions. connectionFactory.SetInnerConnectionTo(outerConnection, this); throw; } if (null == openConnection) { connectionFactory.SetInnerConnectionTo(outerConnection, this); throw ADP.InternalConnectionError(ADP.ConnectionError.GetConnectionReturnsNull); } connectionFactory.SetInnerConnectionEvent(outerConnection, openConnection); } } } abstract internal class DbConnectionBusy : DbConnectionClosed { protected DbConnectionBusy(ConnectionState state) : base(state, true, false) { } internal override void OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) { throw ADP.ConnectionAlreadyOpen(State); } } sealed internal class DbConnectionClosedBusy : DbConnectionBusy { // Closed Connection, Currently Busy - changing connection string internal static readonly DbConnectionInternal SingletonInstance = new DbConnectionClosedBusy(); // singleton object private DbConnectionClosedBusy() : base(ConnectionState.Closed) { } } sealed internal class DbConnectionOpenBusy : DbConnectionBusy { // Open Connection, Currently Busy - closing connection internal static readonly DbConnectionInternal SingletonInstance = new DbConnectionOpenBusy(); // singleton object private DbConnectionOpenBusy() : base(ConnectionState.Open) { } } sealed internal class DbConnectionClosedConnecting : DbConnectionBusy { // Closed Connection, Currently Connecting internal static readonly DbConnectionInternal SingletonInstance = new DbConnectionClosedConnecting(); // singleton object private DbConnectionClosedConnecting() : base(ConnectionState.Connecting) { } } sealed internal class DbConnectionClosedNeverOpened : DbConnectionClosed { // Closed Connection, Has Never Been Opened internal static readonly DbConnectionInternal SingletonInstance = new DbConnectionClosedNeverOpened(); // singleton object private DbConnectionClosedNeverOpened() : base(ConnectionState.Closed, false, true) { } } sealed internal class DbConnectionClosedPreviouslyOpened : DbConnectionClosed { // Closed Connection, Has Previously Been Opened internal static readonly DbConnectionInternal SingletonInstance = new DbConnectionClosedPreviouslyOpened(); // singleton object private DbConnectionClosedPreviouslyOpened() : base(ConnectionState.Closed, true, true) { } } } // 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
- DynamicValueConverter.cs
- ParseHttpDate.cs
- contentDescriptor.cs
- HandlerBase.cs
- HttpProfileBase.cs
- MetadataItemEmitter.cs
- ListView.cs
- XmlNodeReader.cs
- Double.cs
- TraceEventCache.cs
- Cloud.cs
- DataGridCell.cs
- ContentElement.cs
- JobInputBins.cs
- AttributedMetaModel.cs
- SequentialUshortCollection.cs
- WeakReference.cs
- ClosableStream.cs
- WebPartCollection.cs
- WebPartCollection.cs
- SpnEndpointIdentityExtension.cs
- TypeSchema.cs
- StorageAssociationSetMapping.cs
- SoapIncludeAttribute.cs
- DecoderExceptionFallback.cs
- LineSegment.cs
- XmlQualifiedName.cs
- DEREncoding.cs
- StandardTransformFactory.cs
- RemoveStoryboard.cs
- DataListGeneralPage.cs
- DataContractSerializerSection.cs
- TerminatorSinks.cs
- TextTreePropertyUndoUnit.cs
- CommentEmitter.cs
- GridViewColumnHeader.cs
- EmptyEnumerable.cs
- CatalogUtil.cs
- COM2TypeInfoProcessor.cs
- SingleSelectRootGridEntry.cs
- SelfIssuedAuthRSAPKCS1SignatureDeformatter.cs
- SafeFindHandle.cs
- EmptyStringExpandableObjectConverter.cs
- Misc.cs
- EventListener.cs
- StreamingContext.cs
- PropertyToken.cs
- ReadOnlyHierarchicalDataSourceView.cs
- SqlTransaction.cs
- EventWaitHandle.cs
- ListBase.cs
- FloatUtil.cs
- HierarchicalDataBoundControlAdapter.cs
- IpcManager.cs
- ArrangedElement.cs
- Padding.cs
- FocusChangedEventArgs.cs
- StateDesigner.cs
- Track.cs
- HostingEnvironmentException.cs
- ExtenderControl.cs
- ButtonAutomationPeer.cs
- Stack.cs
- EventSinkHelperWriter.cs
- WebPartAddingEventArgs.cs
- CompilerState.cs
- CompilationLock.cs
- HtmlEncodedRawTextWriter.cs
- UnSafeCharBuffer.cs
- GeneratedContractType.cs
- ConfigurationManagerInternalFactory.cs
- CompositeDesignerAccessibleObject.cs
- LocatorPart.cs
- EditorZoneBase.cs
- DataSourceControl.cs
- Msec.cs
- SiteOfOriginPart.cs
- _ChunkParse.cs
- XmlMapping.cs
- SignedXml.cs
- QueryOutputWriter.cs
- SqlCacheDependencyDatabase.cs
- CatalogZoneAutoFormat.cs
- UserPersonalizationStateInfo.cs
- CommandID.cs
- Popup.cs
- CodeCommentStatement.cs
- CrossAppDomainChannel.cs
- StubHelpers.cs
- ListViewItemSelectionChangedEvent.cs
- UnrecognizedPolicyAssertionElement.cs
- UnicodeEncoding.cs
- CacheEntry.cs
- FontStyle.cs
- TreeNodeCollection.cs
- EntityDataSourceSelectedEventArgs.cs
- WebPartVerbsEventArgs.cs
- ManagementPath.cs
- RegexRunnerFactory.cs
- GregorianCalendarHelper.cs