Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / Data / System / Data / Odbc / OdbcTransaction.cs / 4 / OdbcTransaction.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //----------------------------------------------------------------------------- using System; using System.Data; using System.Data.Common; using System.Threading; namespace System.Data.Odbc { #if WINFSInternalOnly internal #else public #endif sealed class OdbcTransaction : DbTransaction { private OdbcConnection _connection; private IsolationLevel _isolevel = IsolationLevel.Unspecified; private OdbcConnectionHandle _handle; internal OdbcTransaction(OdbcConnection connection, IsolationLevel isolevel, OdbcConnectionHandle handle) { OdbcConnection.VerifyExecutePermission(); _connection = connection; _isolevel = isolevel; _handle = handle; } new public OdbcConnection Connection { // MDAC 66655 get { return _connection; } } override protected DbConnection DbConnection { // MDAC 66655 get { return Connection; } } override public IsolationLevel IsolationLevel { get { OdbcConnection connection = _connection; if (null == connection ) { throw ADP.TransactionZombied(this); } //We need to query for the case where the user didn't set the isolevel //BeginTransaction(), but we should also query to see if the driver //"rolled" the level to a higher supported one... if(IsolationLevel.Unspecified == _isolevel) { //Get the isolation level int sql_iso= connection .GetConnectAttr(ODBC32.SQL_ATTR.TXN_ISOLATION, ODBC32.HANDLER.THROW); switch((ODBC32.SQL_TRANSACTION)sql_iso) { case ODBC32.SQL_TRANSACTION.READ_UNCOMMITTED: _isolevel = IsolationLevel.ReadUncommitted; break; case ODBC32.SQL_TRANSACTION.READ_COMMITTED: _isolevel = IsolationLevel.ReadCommitted; break; case ODBC32.SQL_TRANSACTION.REPEATABLE_READ: _isolevel = IsolationLevel.RepeatableRead; break; case ODBC32.SQL_TRANSACTION.SERIALIZABLE: _isolevel = IsolationLevel.Serializable; break; case ODBC32.SQL_TRANSACTION.SNAPSHOT: _isolevel = IsolationLevel.Snapshot; break; default: throw ODBC.NoMappingForSqlTransactionLevel(sql_iso); }; } return _isolevel; } } override public void Commit() { OdbcConnection.ExecutePermission.Demand(); // MDAC 81476 OdbcConnection connection = _connection; if (null == connection) { throw ADP.TransactionZombied(this); } connection.CheckState(ADP.CommitTransaction); // MDAC 68289 //Note: SQLEndTran success if not actually in a transaction, so we have to throw //since the IDbTransaciton spec indicates this is an error for the managed packages if(null == _handle) { throw ODBC.NotInTransaction(); } ODBC32.RetCode retcode = _handle.CompleteTransaction(ODBC32.SQL_COMMIT); if (retcode == ODBC32.RetCode.ERROR) { //If an error has occurred, we will throw an exception in HandleError, //and leave the transaction active for the user to retry connection.HandleError(_handle, retcode); } //Transaction is complete... connection.LocalTransaction = null; _connection = null; _handle = null; } protected override void Dispose(bool disposing) { if (disposing) { OdbcConnectionHandle handle = _handle; _handle = null; if (null != handle){ try{ ODBC32.RetCode retcode = handle.CompleteTransaction(ODBC32.SQL_ROLLBACK); if (retcode == ODBC32.RetCode.ERROR) { //don't throw an exception here, but trace it so it can be logged if (_connection != null) { Exception e = _connection.HandleErrorNoThrow(handle, retcode); ADP.TraceExceptionWithoutRethrow(e); } } } catch (Exception e){ // if (!ADP.IsCatchableExceptionType(e)) { throw; } } } if (_connection != null) { if (_connection.IsOpen) { _connection.LocalTransaction = null; } } _connection = null; _isolevel = IsolationLevel.Unspecified; } base.Dispose(disposing); } override public void Rollback() { OdbcConnection connection = _connection; if (null == connection) { throw ADP.TransactionZombied(this); } connection.CheckState(ADP.RollbackTransaction); // MDAC 68289 //Note: SQLEndTran success if not actually in a transaction, so we have to throw //since the IDbTransaciton spec indicates this is an error for the managed packages if(null == _handle) { throw ODBC.NotInTransaction(); } ODBC32.RetCode retcode = _handle.CompleteTransaction(ODBC32.SQL_ROLLBACK); if (retcode == ODBC32.RetCode.ERROR) { //If an error has occurred, we will throw an exception in HandleError, //and leave the transaction active for the user to retry connection.HandleError(_handle, retcode); } connection.LocalTransaction = null; _connection = null; _handle = null; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //----------------------------------------------------------------------------- using System; using System.Data; using System.Data.Common; using System.Threading; namespace System.Data.Odbc { #if WINFSInternalOnly internal #else public #endif sealed class OdbcTransaction : DbTransaction { private OdbcConnection _connection; private IsolationLevel _isolevel = IsolationLevel.Unspecified; private OdbcConnectionHandle _handle; internal OdbcTransaction(OdbcConnection connection, IsolationLevel isolevel, OdbcConnectionHandle handle) { OdbcConnection.VerifyExecutePermission(); _connection = connection; _isolevel = isolevel; _handle = handle; } new public OdbcConnection Connection { // MDAC 66655 get { return _connection; } } override protected DbConnection DbConnection { // MDAC 66655 get { return Connection; } } override public IsolationLevel IsolationLevel { get { OdbcConnection connection = _connection; if (null == connection ) { throw ADP.TransactionZombied(this); } //We need to query for the case where the user didn't set the isolevel //BeginTransaction(), but we should also query to see if the driver //"rolled" the level to a higher supported one... if(IsolationLevel.Unspecified == _isolevel) { //Get the isolation level int sql_iso= connection .GetConnectAttr(ODBC32.SQL_ATTR.TXN_ISOLATION, ODBC32.HANDLER.THROW); switch((ODBC32.SQL_TRANSACTION)sql_iso) { case ODBC32.SQL_TRANSACTION.READ_UNCOMMITTED: _isolevel = IsolationLevel.ReadUncommitted; break; case ODBC32.SQL_TRANSACTION.READ_COMMITTED: _isolevel = IsolationLevel.ReadCommitted; break; case ODBC32.SQL_TRANSACTION.REPEATABLE_READ: _isolevel = IsolationLevel.RepeatableRead; break; case ODBC32.SQL_TRANSACTION.SERIALIZABLE: _isolevel = IsolationLevel.Serializable; break; case ODBC32.SQL_TRANSACTION.SNAPSHOT: _isolevel = IsolationLevel.Snapshot; break; default: throw ODBC.NoMappingForSqlTransactionLevel(sql_iso); }; } return _isolevel; } } override public void Commit() { OdbcConnection.ExecutePermission.Demand(); // MDAC 81476 OdbcConnection connection = _connection; if (null == connection) { throw ADP.TransactionZombied(this); } connection.CheckState(ADP.CommitTransaction); // MDAC 68289 //Note: SQLEndTran success if not actually in a transaction, so we have to throw //since the IDbTransaciton spec indicates this is an error for the managed packages if(null == _handle) { throw ODBC.NotInTransaction(); } ODBC32.RetCode retcode = _handle.CompleteTransaction(ODBC32.SQL_COMMIT); if (retcode == ODBC32.RetCode.ERROR) { //If an error has occurred, we will throw an exception in HandleError, //and leave the transaction active for the user to retry connection.HandleError(_handle, retcode); } //Transaction is complete... connection.LocalTransaction = null; _connection = null; _handle = null; } protected override void Dispose(bool disposing) { if (disposing) { OdbcConnectionHandle handle = _handle; _handle = null; if (null != handle){ try{ ODBC32.RetCode retcode = handle.CompleteTransaction(ODBC32.SQL_ROLLBACK); if (retcode == ODBC32.RetCode.ERROR) { //don't throw an exception here, but trace it so it can be logged if (_connection != null) { Exception e = _connection.HandleErrorNoThrow(handle, retcode); ADP.TraceExceptionWithoutRethrow(e); } } } catch (Exception e){ // if (!ADP.IsCatchableExceptionType(e)) { throw; } } } if (_connection != null) { if (_connection.IsOpen) { _connection.LocalTransaction = null; } } _connection = null; _isolevel = IsolationLevel.Unspecified; } base.Dispose(disposing); } override public void Rollback() { OdbcConnection connection = _connection; if (null == connection) { throw ADP.TransactionZombied(this); } connection.CheckState(ADP.RollbackTransaction); // MDAC 68289 //Note: SQLEndTran success if not actually in a transaction, so we have to throw //since the IDbTransaciton spec indicates this is an error for the managed packages if(null == _handle) { throw ODBC.NotInTransaction(); } ODBC32.RetCode retcode = _handle.CompleteTransaction(ODBC32.SQL_ROLLBACK); if (retcode == ODBC32.RetCode.ERROR) { //If an error has occurred, we will throw an exception in HandleError, //and leave the transaction active for the user to retry connection.HandleError(_handle, retcode); } connection.LocalTransaction = null; _connection = null; _handle = null; } } } // 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
- DbParameterCollectionHelper.cs
- EventHandlerList.cs
- DashStyle.cs
- ScriptResourceDefinition.cs
- TextPenaltyModule.cs
- xsdvalidator.cs
- ResourceProviderFactory.cs
- LookupNode.cs
- ForeignConstraint.cs
- BitmapImage.cs
- SAPIEngineTypes.cs
- EventWaitHandleSecurity.cs
- PnrpPeerResolverElement.cs
- TemplateControlCodeDomTreeGenerator.cs
- HttpListenerResponse.cs
- XmlILStorageConverter.cs
- TextWriterTraceListener.cs
- FunctionImportElement.cs
- VisualStyleRenderer.cs
- ProfileBuildProvider.cs
- WorkflowViewElement.cs
- TreeWalkHelper.cs
- ScriptHandlerFactory.cs
- LinearKeyFrames.cs
- PublisherIdentityPermission.cs
- OutputScopeManager.cs
- MemberCollection.cs
- AnnotationDocumentPaginator.cs
- ActiveXHelper.cs
- FormsAuthenticationCredentials.cs
- TraceXPathNavigator.cs
- PresentationSource.cs
- LocatorBase.cs
- TemplateInstanceAttribute.cs
- WebPartActionVerb.cs
- WebControlAdapter.cs
- MailDefinition.cs
- InfoCardTrace.cs
- Empty.cs
- MetaModel.cs
- SimpleWebHandlerParser.cs
- ContentType.cs
- AnnotationResourceCollection.cs
- ByteFacetDescriptionElement.cs
- Window.cs
- ExplicitDiscriminatorMap.cs
- newitemfactory.cs
- ControlHelper.cs
- SqlFlattener.cs
- ColumnWidthChangingEvent.cs
- TextDocumentView.cs
- EntityDataSourceContextDisposingEventArgs.cs
- SafeNativeMethods.cs
- SkinBuilder.cs
- ChannelPool.cs
- DataGridViewButtonCell.cs
- FloatMinMaxAggregationOperator.cs
- Control.cs
- EventProviderTraceListener.cs
- indexingfiltermarshaler.cs
- PolicyException.cs
- SqlDataSourceCommandEventArgs.cs
- InstanceOwnerQueryResult.cs
- OdbcConnection.cs
- SchemaEntity.cs
- ExpressionList.cs
- MessageLogger.cs
- ClientCredentialsSecurityTokenManager.cs
- HandlerFactoryWrapper.cs
- ListViewCancelEventArgs.cs
- SqlAliasesReferenced.cs
- RoutingChannelExtension.cs
- DefaultTraceListener.cs
- ControlCachePolicy.cs
- WebPartConnectVerb.cs
- GeneratedContractType.cs
- SlipBehavior.cs
- AutoScrollExpandMessageFilter.cs
- Condition.cs
- XsltContext.cs
- OrderedDictionary.cs
- SubqueryTrackingVisitor.cs
- TransportSecurityProtocol.cs
- Identity.cs
- TreeNodeCollection.cs
- Cursor.cs
- ColorConvertedBitmapExtension.cs
- figurelength.cs
- ParentQuery.cs
- SqlUtils.cs
- DeploymentSection.cs
- TrustManagerMoreInformation.cs
- AttachmentCollection.cs
- CommandTreeTypeHelper.cs
- RelatedPropertyManager.cs
- ZipIOCentralDirectoryBlock.cs
- ConfigurationManagerInternalFactory.cs
- Propagator.JoinPropagator.cs
- UserValidatedEventArgs.cs
- LoadItemsEventArgs.cs