Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / ndp / fx / src / DLinq / Dlinq / SqlClient / Query / SimpleExpression.cs / 1 / SimpleExpression.cs
using System; using System.Collections.Generic; using System.Linq.Expressions; using System.Reflection; using System.Data.Linq; using System.Data.Linq.Mapping; using System.Data.Linq.Provider; using System.Linq; using System.Data.Linq.SqlClient; using System.Diagnostics.CodeAnalysis; namespace System.Data.Linq.SqlClient { ////// Determines whether an expression is simple or not. /// Simple is a scalar expression that contains only functions, operators and column references /// internal static class SimpleExpression { internal static bool IsSimple(SqlExpression expr) { Visitor v = new Visitor(); v.Visit(expr); return v.IsSimple; } class Visitor : SqlVisitor { bool isSimple = true; internal bool IsSimple { get { return this.isSimple; } } [SuppressMessage("Microsoft.Maintainability", "CA1502:AvoidExcessiveComplexity", Justification = "These issues are related to our use of if-then and case statements for node types, which adds to the complexity count however when reviewed they are easy to navigate and understand.")] internal override SqlNode Visit(SqlNode node) { if (node == null) { return null; } if (!this.isSimple) { return node; } switch (node.NodeType) { case SqlNodeType.Not: case SqlNodeType.Not2V: case SqlNodeType.Negate: case SqlNodeType.BitNot: case SqlNodeType.IsNull: case SqlNodeType.IsNotNull: case SqlNodeType.ValueOf: case SqlNodeType.OuterJoinedValue: case SqlNodeType.ClrLength: case SqlNodeType.Add: case SqlNodeType.Sub: case SqlNodeType.Mul: case SqlNodeType.Div: case SqlNodeType.Mod: case SqlNodeType.BitAnd: case SqlNodeType.BitOr: case SqlNodeType.BitXor: case SqlNodeType.And: case SqlNodeType.Or: case SqlNodeType.GE: case SqlNodeType.GT: case SqlNodeType.LE: case SqlNodeType.LT: case SqlNodeType.EQ: case SqlNodeType.NE: case SqlNodeType.EQ2V: case SqlNodeType.NE2V: case SqlNodeType.Between: case SqlNodeType.Concat: case SqlNodeType.Convert: case SqlNodeType.Cast: case SqlNodeType.Treat: case SqlNodeType.Member: case SqlNodeType.TypeCase: case SqlNodeType.SearchedCase: case SqlNodeType.SimpleCase: case SqlNodeType.Like: case SqlNodeType.FunctionCall: case SqlNodeType.ExprSet: case SqlNodeType.OptionalValue: case SqlNodeType.Parameter: case SqlNodeType.ColumnRef: case SqlNodeType.Value: case SqlNodeType.Variable: return base.Visit(node); case SqlNodeType.Column: case SqlNodeType.ClientCase: case SqlNodeType.DiscriminatedType: case SqlNodeType.Link: case SqlNodeType.Row: case SqlNodeType.UserQuery: case SqlNodeType.StoredProcedureCall: case SqlNodeType.UserRow: case SqlNodeType.UserColumn: case SqlNodeType.Multiset: case SqlNodeType.ScalarSubSelect: case SqlNodeType.Element: case SqlNodeType.Exists: case SqlNodeType.Join: case SqlNodeType.Select: case SqlNodeType.New: case SqlNodeType.ClientQuery: case SqlNodeType.ClientArray: case SqlNodeType.Insert: case SqlNodeType.Update: case SqlNodeType.Delete: case SqlNodeType.MemberAssign: case SqlNodeType.Assign: case SqlNodeType.Block: case SqlNodeType.Union: case SqlNodeType.DoNotVisit: case SqlNodeType.MethodCall: case SqlNodeType.Nop: default: this.isSimple = false; return node; } } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. using System; using System.Collections.Generic; using System.Linq.Expressions; using System.Reflection; using System.Data.Linq; using System.Data.Linq.Mapping; using System.Data.Linq.Provider; using System.Linq; using System.Data.Linq.SqlClient; using System.Diagnostics.CodeAnalysis; namespace System.Data.Linq.SqlClient { ////// Determines whether an expression is simple or not. /// Simple is a scalar expression that contains only functions, operators and column references /// internal static class SimpleExpression { internal static bool IsSimple(SqlExpression expr) { Visitor v = new Visitor(); v.Visit(expr); return v.IsSimple; } class Visitor : SqlVisitor { bool isSimple = true; internal bool IsSimple { get { return this.isSimple; } } [SuppressMessage("Microsoft.Maintainability", "CA1502:AvoidExcessiveComplexity", Justification = "These issues are related to our use of if-then and case statements for node types, which adds to the complexity count however when reviewed they are easy to navigate and understand.")] internal override SqlNode Visit(SqlNode node) { if (node == null) { return null; } if (!this.isSimple) { return node; } switch (node.NodeType) { case SqlNodeType.Not: case SqlNodeType.Not2V: case SqlNodeType.Negate: case SqlNodeType.BitNot: case SqlNodeType.IsNull: case SqlNodeType.IsNotNull: case SqlNodeType.ValueOf: case SqlNodeType.OuterJoinedValue: case SqlNodeType.ClrLength: case SqlNodeType.Add: case SqlNodeType.Sub: case SqlNodeType.Mul: case SqlNodeType.Div: case SqlNodeType.Mod: case SqlNodeType.BitAnd: case SqlNodeType.BitOr: case SqlNodeType.BitXor: case SqlNodeType.And: case SqlNodeType.Or: case SqlNodeType.GE: case SqlNodeType.GT: case SqlNodeType.LE: case SqlNodeType.LT: case SqlNodeType.EQ: case SqlNodeType.NE: case SqlNodeType.EQ2V: case SqlNodeType.NE2V: case SqlNodeType.Between: case SqlNodeType.Concat: case SqlNodeType.Convert: case SqlNodeType.Cast: case SqlNodeType.Treat: case SqlNodeType.Member: case SqlNodeType.TypeCase: case SqlNodeType.SearchedCase: case SqlNodeType.SimpleCase: case SqlNodeType.Like: case SqlNodeType.FunctionCall: case SqlNodeType.ExprSet: case SqlNodeType.OptionalValue: case SqlNodeType.Parameter: case SqlNodeType.ColumnRef: case SqlNodeType.Value: case SqlNodeType.Variable: return base.Visit(node); case SqlNodeType.Column: case SqlNodeType.ClientCase: case SqlNodeType.DiscriminatedType: case SqlNodeType.Link: case SqlNodeType.Row: case SqlNodeType.UserQuery: case SqlNodeType.StoredProcedureCall: case SqlNodeType.UserRow: case SqlNodeType.UserColumn: case SqlNodeType.Multiset: case SqlNodeType.ScalarSubSelect: case SqlNodeType.Element: case SqlNodeType.Exists: case SqlNodeType.Join: case SqlNodeType.Select: case SqlNodeType.New: case SqlNodeType.ClientQuery: case SqlNodeType.ClientArray: case SqlNodeType.Insert: case SqlNodeType.Update: case SqlNodeType.Delete: case SqlNodeType.MemberAssign: case SqlNodeType.Assign: case SqlNodeType.Block: case SqlNodeType.Union: case SqlNodeType.DoNotVisit: case SqlNodeType.MethodCall: case SqlNodeType.Nop: default: this.isSimple = false; return node; } } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- OuterProxyWrapper.cs
- XmlCustomFormatter.cs
- MemoryStream.cs
- ConstraintManager.cs
- WindowsListViewGroupSubsetLink.cs
- Error.cs
- XPathNodeIterator.cs
- FixedSOMPageElement.cs
- MimeTypeMapper.cs
- XmlBinaryWriter.cs
- Geometry3D.cs
- WebEvents.cs
- SerialErrors.cs
- COMException.cs
- AuthenticatingEventArgs.cs
- MailDefinition.cs
- BamlLocalizabilityResolver.cs
- COM2PropertyDescriptor.cs
- HandlerBase.cs
- InternalConfigSettingsFactory.cs
- WebDescriptionAttribute.cs
- WindowsIPAddress.cs
- RawStylusInput.cs
- FileDialog.cs
- RepeaterDesigner.cs
- TypeDescriptor.cs
- ColumnCollection.cs
- TextCompositionManager.cs
- Update.cs
- HtmlTableRow.cs
- RowType.cs
- ChannelParameterCollection.cs
- SystemIcmpV6Statistics.cs
- GraphicsContext.cs
- CannotUnloadAppDomainException.cs
- XPathAncestorQuery.cs
- XPathNavigator.cs
- PersonalizableAttribute.cs
- SqlPersistenceProviderFactory.cs
- TextView.cs
- MetricEntry.cs
- SQLInt16.cs
- PackagePartCollection.cs
- HttpRequestWrapper.cs
- DtdParser.cs
- MetadataItemSerializer.cs
- SHA512Managed.cs
- FlowDocumentPage.cs
- XmlSchemaProviderAttribute.cs
- AllowedAudienceUriElement.cs
- UnitySerializationHolder.cs
- NameValueSectionHandler.cs
- ExpressionParser.cs
- Double.cs
- validation.cs
- SafeHandles.cs
- XmlValueConverter.cs
- _DynamicWinsockMethods.cs
- XamlFigureLengthSerializer.cs
- XamlStream.cs
- MediaSystem.cs
- Viewport2DVisual3D.cs
- ContainerControl.cs
- URLString.cs
- RecognitionEventArgs.cs
- Substitution.cs
- TableCellCollection.cs
- X509CertificateRecipientServiceCredential.cs
- CodeDirectiveCollection.cs
- HttpAsyncResult.cs
- WCFBuildProvider.cs
- ImageDrawing.cs
- DataServiceExpressionVisitor.cs
- SortAction.cs
- UnmanagedBitmapWrapper.cs
- WsatConfiguration.cs
- CustomErrorsSection.cs
- DynamicQueryableWrapper.cs
- SortedList.cs
- UpdateCommand.cs
- QueryOutputWriter.cs
- RepeatEnumerable.cs
- PasswordBox.cs
- MethodRental.cs
- VerificationException.cs
- ExclusiveHandleList.cs
- namescope.cs
- ComponentResourceManager.cs
- AssertHelper.cs
- ToolStripStatusLabel.cs
- Activity.cs
- AutoGeneratedFieldProperties.cs
- DelimitedListTraceListener.cs
- FontFamilyIdentifier.cs
- QualifiedCellIdBoolean.cs
- TableLayoutPanelCellPosition.cs
- precedingsibling.cs
- DBBindings.cs
- PeerNameResolver.cs
- AdvancedBindingPropertyDescriptor.cs