Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / 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
- objectresult_tresulttype.cs
- CodeExpressionStatement.cs
- Roles.cs
- PeerApplication.cs
- WindowsScrollBar.cs
- WindowsSolidBrush.cs
- StringStorage.cs
- DragEventArgs.cs
- Single.cs
- Command.cs
- MultiplexingDispatchMessageFormatter.cs
- PropertyChangedEventManager.cs
- SHA1.cs
- ProfileGroupSettingsCollection.cs
- XmlQueryCardinality.cs
- OLEDB_Enum.cs
- IERequestCache.cs
- TabItemWrapperAutomationPeer.cs
- ContactManager.cs
- DataGridCellAutomationPeer.cs
- PointAnimation.cs
- HeaderedItemsControl.cs
- UInt64Converter.cs
- ZipArchive.cs
- OrderedParallelQuery.cs
- PersonalizationState.cs
- bidPrivateBase.cs
- CatalogPartChrome.cs
- StackOverflowException.cs
- UriParserTemplates.cs
- QuotedPrintableStream.cs
- ADMembershipProvider.cs
- StrongNameIdentityPermission.cs
- NullExtension.cs
- InheritedPropertyChangedEventArgs.cs
- XmlFormatExtensionPointAttribute.cs
- Util.cs
- SqlProcedureAttribute.cs
- dataSvcMapFileLoader.cs
- InvariantComparer.cs
- PathFigure.cs
- ZipIOLocalFileBlock.cs
- AlphaSortedEnumConverter.cs
- PnrpPermission.cs
- WrapperSecurityCommunicationObject.cs
- ControlBuilder.cs
- EmptyEnumerator.cs
- Rect.cs
- AsymmetricKeyExchangeDeformatter.cs
- UntrustedRecipientException.cs
- NameValueFileSectionHandler.cs
- StaticFileHandler.cs
- BuilderPropertyEntry.cs
- EnlistmentState.cs
- Vector3DCollectionValueSerializer.cs
- Section.cs
- SemaphoreSlim.cs
- sqlpipe.cs
- Types.cs
- ColumnMapProcessor.cs
- ClientSession.cs
- BookmarkOptionsHelper.cs
- rsa.cs
- DataGridViewUtilities.cs
- XmlProcessingInstruction.cs
- BitArray.cs
- QueryComponents.cs
- WCFModelStrings.Designer.cs
- Point4DValueSerializer.cs
- BehaviorEditorPart.cs
- WebPageTraceListener.cs
- CssClassPropertyAttribute.cs
- EventDriven.cs
- TextLine.cs
- Iis7Helper.cs
- PermissionToken.cs
- DocumentationServerProtocol.cs
- HttpFileCollection.cs
- XmlSchemaAnnotated.cs
- MenuItem.cs
- Types.cs
- SecureStringHasher.cs
- StylusTip.cs
- PropertyTab.cs
- AuthorizationRule.cs
- RuntimeResourceSet.cs
- DataRelationPropertyDescriptor.cs
- SafeSecurityHandles.cs
- FixedSOMTable.cs
- ArithmeticException.cs
- ProgramPublisher.cs
- Parser.cs
- DataGridColumnCollection.cs
- Clause.cs
- TypeDelegator.cs
- DataGridViewCheckBoxCell.cs
- Bits.cs
- ClientSideQueueItem.cs
- StringInfo.cs
- RelationshipConstraintValidator.cs