Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / Data / System / Data / Common / DBSchemaTable.cs / 1 / DBSchemaTable.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //----------------------------------------------------------------------------- namespace System.Data.Common { using System; using System.Data; using System.Data.ProviderBase; using System.Diagnostics; sealed internal class DbSchemaTable { private enum ColumnEnum { ColumnName, ColumnOrdinal, ColumnSize, BaseServerName, BaseCatalogName, BaseColumnName, BaseSchemaName, BaseTableName, IsAutoIncrement, IsUnique, IsKey, IsRowVersion, DataType, ProviderSpecificDataType, AllowDBNull, ProviderType, IsExpression, IsHidden, IsLong, IsReadOnly, SchemaMappingUnsortedIndex, } static readonly private string[] DBCOLUMN_NAME = new string[] { SchemaTableColumn.ColumnName, SchemaTableColumn.ColumnOrdinal, SchemaTableColumn.ColumnSize, SchemaTableOptionalColumn.BaseServerName, SchemaTableOptionalColumn.BaseCatalogName, SchemaTableColumn.BaseColumnName, SchemaTableColumn.BaseSchemaName, SchemaTableColumn.BaseTableName, SchemaTableOptionalColumn.IsAutoIncrement, SchemaTableColumn.IsUnique, SchemaTableColumn.IsKey, SchemaTableOptionalColumn.IsRowVersion, SchemaTableColumn.DataType, SchemaTableOptionalColumn.ProviderSpecificDataType, SchemaTableColumn.AllowDBNull, SchemaTableColumn.ProviderType, SchemaTableColumn.IsExpression, SchemaTableOptionalColumn.IsHidden, SchemaTableColumn.IsLong, SchemaTableOptionalColumn.IsReadOnly, DbSchemaRow.SchemaMappingUnsortedIndex, }; internal DataTable dataTable; private DataColumnCollection columns; private DataColumn[] columnCache = new DataColumn[DBCOLUMN_NAME.Length]; private bool _returnProviderSpecificTypes; internal DbSchemaTable(DataTable dataTable, bool returnProviderSpecificTypes) { this.dataTable = dataTable; this.columns = dataTable.Columns; _returnProviderSpecificTypes = returnProviderSpecificTypes; } internal DataColumn ColumnName { get { return CachedDataColumn(ColumnEnum.ColumnName);}} internal DataColumn Size { get { return CachedDataColumn(ColumnEnum.ColumnSize);}} internal DataColumn BaseServerName { get { return CachedDataColumn(ColumnEnum.BaseServerName);}} internal DataColumn BaseColumnName { get { return CachedDataColumn(ColumnEnum.BaseColumnName);}} internal DataColumn BaseTableName { get { return CachedDataColumn(ColumnEnum.BaseTableName);}} internal DataColumn BaseCatalogName { get { return CachedDataColumn(ColumnEnum.BaseCatalogName);}} internal DataColumn BaseSchemaName { get { return CachedDataColumn(ColumnEnum.BaseSchemaName);}} internal DataColumn IsAutoIncrement { get { return CachedDataColumn(ColumnEnum.IsAutoIncrement);}} internal DataColumn IsUnique { get { return CachedDataColumn(ColumnEnum.IsUnique);}} internal DataColumn IsKey { get { return CachedDataColumn(ColumnEnum.IsKey);}} internal DataColumn IsRowVersion { get { return CachedDataColumn(ColumnEnum.IsRowVersion);}} internal DataColumn AllowDBNull { get { return CachedDataColumn(ColumnEnum.AllowDBNull);}} internal DataColumn IsExpression { get { return CachedDataColumn(ColumnEnum.IsExpression);}} internal DataColumn IsHidden { get { return CachedDataColumn(ColumnEnum.IsHidden);}} internal DataColumn IsLong { get { return CachedDataColumn(ColumnEnum.IsLong);}} internal DataColumn IsReadOnly { get { return CachedDataColumn(ColumnEnum.IsReadOnly);}} internal DataColumn UnsortedIndex { get { return CachedDataColumn(ColumnEnum.SchemaMappingUnsortedIndex);}} internal DataColumn DataType { get { if (_returnProviderSpecificTypes) { return CachedDataColumn(ColumnEnum.ProviderSpecificDataType, ColumnEnum.DataType); } return CachedDataColumn(ColumnEnum.DataType); } } private DataColumn CachedDataColumn(ColumnEnum column) { return CachedDataColumn(column, column); } private DataColumn CachedDataColumn(ColumnEnum column, ColumnEnum column2) { DataColumn dataColumn = columnCache[(int) column]; if (null == dataColumn) { int index = columns.IndexOf(DBCOLUMN_NAME[(int) column]); if ((-1 == index) && (column != column2)) { index = columns.IndexOf(DBCOLUMN_NAME[(int) column2]); } if (-1 != index) { dataColumn = columns[index]; columnCache[(int) column] = dataColumn; } } return dataColumn; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //----------------------------------------------------------------------------- namespace System.Data.Common { using System; using System.Data; using System.Data.ProviderBase; using System.Diagnostics; sealed internal class DbSchemaTable { private enum ColumnEnum { ColumnName, ColumnOrdinal, ColumnSize, BaseServerName, BaseCatalogName, BaseColumnName, BaseSchemaName, BaseTableName, IsAutoIncrement, IsUnique, IsKey, IsRowVersion, DataType, ProviderSpecificDataType, AllowDBNull, ProviderType, IsExpression, IsHidden, IsLong, IsReadOnly, SchemaMappingUnsortedIndex, } static readonly private string[] DBCOLUMN_NAME = new string[] { SchemaTableColumn.ColumnName, SchemaTableColumn.ColumnOrdinal, SchemaTableColumn.ColumnSize, SchemaTableOptionalColumn.BaseServerName, SchemaTableOptionalColumn.BaseCatalogName, SchemaTableColumn.BaseColumnName, SchemaTableColumn.BaseSchemaName, SchemaTableColumn.BaseTableName, SchemaTableOptionalColumn.IsAutoIncrement, SchemaTableColumn.IsUnique, SchemaTableColumn.IsKey, SchemaTableOptionalColumn.IsRowVersion, SchemaTableColumn.DataType, SchemaTableOptionalColumn.ProviderSpecificDataType, SchemaTableColumn.AllowDBNull, SchemaTableColumn.ProviderType, SchemaTableColumn.IsExpression, SchemaTableOptionalColumn.IsHidden, SchemaTableColumn.IsLong, SchemaTableOptionalColumn.IsReadOnly, DbSchemaRow.SchemaMappingUnsortedIndex, }; internal DataTable dataTable; private DataColumnCollection columns; private DataColumn[] columnCache = new DataColumn[DBCOLUMN_NAME.Length]; private bool _returnProviderSpecificTypes; internal DbSchemaTable(DataTable dataTable, bool returnProviderSpecificTypes) { this.dataTable = dataTable; this.columns = dataTable.Columns; _returnProviderSpecificTypes = returnProviderSpecificTypes; } internal DataColumn ColumnName { get { return CachedDataColumn(ColumnEnum.ColumnName);}} internal DataColumn Size { get { return CachedDataColumn(ColumnEnum.ColumnSize);}} internal DataColumn BaseServerName { get { return CachedDataColumn(ColumnEnum.BaseServerName);}} internal DataColumn BaseColumnName { get { return CachedDataColumn(ColumnEnum.BaseColumnName);}} internal DataColumn BaseTableName { get { return CachedDataColumn(ColumnEnum.BaseTableName);}} internal DataColumn BaseCatalogName { get { return CachedDataColumn(ColumnEnum.BaseCatalogName);}} internal DataColumn BaseSchemaName { get { return CachedDataColumn(ColumnEnum.BaseSchemaName);}} internal DataColumn IsAutoIncrement { get { return CachedDataColumn(ColumnEnum.IsAutoIncrement);}} internal DataColumn IsUnique { get { return CachedDataColumn(ColumnEnum.IsUnique);}} internal DataColumn IsKey { get { return CachedDataColumn(ColumnEnum.IsKey);}} internal DataColumn IsRowVersion { get { return CachedDataColumn(ColumnEnum.IsRowVersion);}} internal DataColumn AllowDBNull { get { return CachedDataColumn(ColumnEnum.AllowDBNull);}} internal DataColumn IsExpression { get { return CachedDataColumn(ColumnEnum.IsExpression);}} internal DataColumn IsHidden { get { return CachedDataColumn(ColumnEnum.IsHidden);}} internal DataColumn IsLong { get { return CachedDataColumn(ColumnEnum.IsLong);}} internal DataColumn IsReadOnly { get { return CachedDataColumn(ColumnEnum.IsReadOnly);}} internal DataColumn UnsortedIndex { get { return CachedDataColumn(ColumnEnum.SchemaMappingUnsortedIndex);}} internal DataColumn DataType { get { if (_returnProviderSpecificTypes) { return CachedDataColumn(ColumnEnum.ProviderSpecificDataType, ColumnEnum.DataType); } return CachedDataColumn(ColumnEnum.DataType); } } private DataColumn CachedDataColumn(ColumnEnum column) { return CachedDataColumn(column, column); } private DataColumn CachedDataColumn(ColumnEnum column, ColumnEnum column2) { DataColumn dataColumn = columnCache[(int) column]; if (null == dataColumn) { int index = columns.IndexOf(DBCOLUMN_NAME[(int) column]); if ((-1 == index) && (column != column2)) { index = columns.IndexOf(DBCOLUMN_NAME[(int) column2]); } if (-1 != index) { dataColumn = columns[index]; columnCache[(int) column] = dataColumn; } } return dataColumn; } } } // 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
- ObjectViewFactory.cs
- HttpCapabilitiesSectionHandler.cs
- AbstractDataSvcMapFileLoader.cs
- HttpRawResponse.cs
- MediaContextNotificationWindow.cs
- DropDownButton.cs
- SafeNativeMethods.cs
- DataGridViewCellFormattingEventArgs.cs
- XmlComplianceUtil.cs
- NameScopePropertyAttribute.cs
- CharAnimationBase.cs
- TypeContext.cs
- FilterQuery.cs
- Decimal.cs
- ToolStripSystemRenderer.cs
- SerializerWriterEventHandlers.cs
- cookieexception.cs
- TrackingLocationCollection.cs
- TimeEnumHelper.cs
- FilterableData.cs
- AnnotationComponentChooser.cs
- FieldMetadata.cs
- BitmapEffect.cs
- GenericWebPart.cs
- X509Chain.cs
- CellQuery.cs
- DataServiceRequest.cs
- EdmToObjectNamespaceMap.cs
- LocalIdCollection.cs
- SerializationEventsCache.cs
- CodeEventReferenceExpression.cs
- UpdateCommand.cs
- RenderTargetBitmap.cs
- _ScatterGatherBuffers.cs
- WebBrowserContainer.cs
- UserNamePasswordValidator.cs
- DotExpr.cs
- FacetValueContainer.cs
- DataError.cs
- BindingSource.cs
- DesignBindingConverter.cs
- WebPartConnection.cs
- BitStream.cs
- AssemblyBuilder.cs
- BuildProviderCollection.cs
- SqlDataSourceStatusEventArgs.cs
- Main.cs
- LabelAutomationPeer.cs
- UnmanagedMarshal.cs
- DataViewManagerListItemTypeDescriptor.cs
- DataBindingCollection.cs
- CookieProtection.cs
- HandleRef.cs
- DesignTimeParseData.cs
- ListManagerBindingsCollection.cs
- AQNBuilder.cs
- ProtocolsConfigurationHandler.cs
- webbrowsersite.cs
- FlowchartSizeFeature.cs
- GridViewItemAutomationPeer.cs
- TextChangedEventArgs.cs
- HMACSHA384.cs
- SmtpClient.cs
- DBSqlParserColumnCollection.cs
- EncryptedType.cs
- ConfigurationManagerHelperFactory.cs
- XPathSingletonIterator.cs
- QuadTree.cs
- DrawingGroup.cs
- ListView.cs
- SocketInformation.cs
- TemplateParser.cs
- StrokeSerializer.cs
- RuntimeResourceSet.cs
- DataGridViewCellEventArgs.cs
- TraceSwitch.cs
- UpdatePanelTrigger.cs
- BookmarkManager.cs
- ChannelParameterCollection.cs
- SoapDocumentServiceAttribute.cs
- DataGridViewRowErrorTextNeededEventArgs.cs
- CellLabel.cs
- DPCustomTypeDescriptor.cs
- GridToolTip.cs
- OleDbParameterCollection.cs
- DbMetaDataCollectionNames.cs
- SynchronousSendBindingElement.cs
- Internal.cs
- ButtonField.cs
- FilterEventArgs.cs
- NonSerializedAttribute.cs
- ProtocolsConfiguration.cs
- ViewValidator.cs
- XamlBuildTaskServices.cs
- EmissiveMaterial.cs
- RadioButton.cs
- PaperSize.cs
- _HeaderInfo.cs
- StreamInfo.cs
- ValueType.cs