Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / ndp / fx / src / DataEntity / System / Data / Mapping / ViewValidator.cs / 2 / ViewValidator.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....], [....] //--------------------------------------------------------------------- using System.Data.Metadata.Edm; using System.Globalization; using System.Data.Common.CommandTrees; using System.Collections.Generic; using System.Diagnostics; using System.Data.Entity; namespace System.Data.Mapping { ////// Verifies that only legal expressions exist in a user-defined query mapping view. /// /// - ViewExpr = (see ViewExpressionValidator) /// Project(Projection, ViewExpr) | /// Project(Value, ViewExpr) | /// Filter(ViewExpr, ViewExpr) | /// Join(ViewExpr, ViewExpr, ViewExpr) | /// UnionAll(ViewExpr, ViewExpr) | /// Scan(S-Space EntitySet) /// Constant | /// Property{StructuralProperty}(ViewExpr) | /// Null | /// VariableReference | /// Cast(ViewExpr) | /// Case([Predicate, ViewExpr]*, ViewExpr) | /// Comparison(ViewExpr, ViewExpr) | /// Not(ViewExpr) | /// And(ViewExpr, ViewExpr) | /// Or(ViewExpr, ViewExpr) | /// IsNull(ViewExpr) /// - Projection = (see ViewExpressionValidator.Visit(DbProjectExpression) /// NewInstance{TargetEntity}(ViewExpr*) | /// NewInstance{Row}(ViewExpr*) /// internal static class ViewValidator { ////// Determines whether the given view is valid. /// /// Query view to validate. /// Store item collection. /// Mapping in which view is declared. ///Errors in view definition. internal static IEnumerableValidateQueryView(DbQueryCommandTree view, StoreItemCollection storeItemCollection, StorageSetMapping setMapping, EntityTypeBase elementType, bool includeSubtypes) { ViewExpressionValidator validator = new ViewExpressionValidator(storeItemCollection, setMapping, elementType, includeSubtypes); validator.VisitExpression(view.Query); return validator.Errors; } private sealed class ViewExpressionValidator : BasicExpressionVisitor { private readonly StorageSetMapping _setMapping; private readonly StoreItemCollection _storeItemCollection; private readonly List _errors; private readonly EntityTypeBase _elementType; private readonly bool _includeSubtypes; internal ViewExpressionValidator(StoreItemCollection storeItemCollection, StorageSetMapping setMapping, EntityTypeBase elementType, bool includeSubtypes) { Debug.Assert(null != setMapping); Debug.Assert(null != storeItemCollection); _setMapping = setMapping; _storeItemCollection = storeItemCollection; _errors = new List (); _elementType = elementType; _includeSubtypes = includeSubtypes; } internal IEnumerable Errors { get { return _errors; } } public override void VisitExpression(DbExpression expression) { if (null != expression) { ValidateExpressionKind(expression.ExpressionKind); } base.VisitExpression(expression); } private void ValidateExpressionKind(DbExpressionKind expressionKind) { switch (expressionKind) { // Supported expression kinds case DbExpressionKind.Constant: case DbExpressionKind.Property: case DbExpressionKind.Null: case DbExpressionKind.VariableReference: case DbExpressionKind.Cast: case DbExpressionKind.Case: case DbExpressionKind.Not: case DbExpressionKind.Or: case DbExpressionKind.And: case DbExpressionKind.IsNull: case DbExpressionKind.Equals: case DbExpressionKind.NotEquals: case DbExpressionKind.LessThan: case DbExpressionKind.LessThanOrEquals: case DbExpressionKind.GreaterThan: case DbExpressionKind.GreaterThanOrEquals: case DbExpressionKind.Project: case DbExpressionKind.NewInstance: case DbExpressionKind.Filter: case DbExpressionKind.Ref: case DbExpressionKind.UnionAll: case DbExpressionKind.Scan: case DbExpressionKind.FullOuterJoin: case DbExpressionKind.LeftOuterJoin: case DbExpressionKind.InnerJoin: case DbExpressionKind.EntityRef: break; default: string elementString = (_includeSubtypes)?"IsTypeOf("+_elementType.ToString()+")":_elementType.ToString(); _errors.Add(new EdmSchemaError(System.Data.Entity.Strings.Mapping_UnsupportedExpressionKind_QueryView_2( _setMapping.Set.Name, elementString, expressionKind), (int)StorageMappingErrorCode.MappingUnsupportedExpressionKindQueryView, EdmSchemaErrorSeverity.Error, _setMapping.EntityContainerMapping.SourceLocation, _setMapping.StartLineNumber, _setMapping.StartLinePosition)); break; } } public override void Visit(DbPropertyExpression expression) { base.Visit(expression); if (expression.Property.BuiltInTypeKind != BuiltInTypeKind.EdmProperty) { _errors.Add(new EdmSchemaError(System.Data.Entity.Strings.Mapping_UnsupportedPropertyKind_QueryView_3( _setMapping.Set.Name, expression.Property.Name, expression.Property.BuiltInTypeKind), (int)StorageMappingErrorCode.MappingUnsupportedPropertyKindQueryView, EdmSchemaErrorSeverity.Error, _setMapping.EntityContainerMapping.SourceLocation, _setMapping.StartLineNumber, _setMapping.StartLinePosition)); } } public override void Visit(DbNewInstanceExpression expression) { base.Visit(expression); EdmType type = expression.ResultType.EdmType; if (type.BuiltInTypeKind != BuiltInTypeKind.RowType) { // restrict initialization of non-row types to the target of the view if (!_setMapping.Set.ElementType.IsAssignableFrom(type)) { _errors.Add(new EdmSchemaError(System.Data.Entity.Strings.Mapping_UnsupportedInitialization_QueryView_2( _setMapping.Set.Name, type.FullName), (int)StorageMappingErrorCode.MappingUnsupportedInitializationQueryView, EdmSchemaErrorSeverity.Error, _setMapping.EntityContainerMapping.SourceLocation, _setMapping.StartLineNumber, _setMapping.StartLinePosition)); } } } public override void Visit(DbScanExpression expression) { base.Visit(expression); Debug.Assert(null != expression.Target); // verify scan target is in S-space EntitySetBase target = expression.Target; EntityContainer targetContainer = target.EntityContainer; Debug.Assert(null != target.EntityContainer); if ((targetContainer.DataSpace != DataSpace.SSpace)) { _errors.Add(new EdmSchemaError(System.Data.Entity.Strings.Mapping_UnsupportedScanTarget_QueryView_2( _setMapping.Set.Name, target.Name), (int)StorageMappingErrorCode.MappingUnsupportedScanTargetQueryView, EdmSchemaErrorSeverity.Error, _setMapping.EntityContainerMapping.SourceLocation, _setMapping.StartLineNumber, _setMapping.StartLinePosition)); } } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //---------------------------------------------------------------------- // // Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....], [....] //--------------------------------------------------------------------- using System.Data.Metadata.Edm; using System.Globalization; using System.Data.Common.CommandTrees; using System.Collections.Generic; using System.Diagnostics; using System.Data.Entity; namespace System.Data.Mapping { ////// Verifies that only legal expressions exist in a user-defined query mapping view. /// /// - ViewExpr = (see ViewExpressionValidator) /// Project(Projection, ViewExpr) | /// Project(Value, ViewExpr) | /// Filter(ViewExpr, ViewExpr) | /// Join(ViewExpr, ViewExpr, ViewExpr) | /// UnionAll(ViewExpr, ViewExpr) | /// Scan(S-Space EntitySet) /// Constant | /// Property{StructuralProperty}(ViewExpr) | /// Null | /// VariableReference | /// Cast(ViewExpr) | /// Case([Predicate, ViewExpr]*, ViewExpr) | /// Comparison(ViewExpr, ViewExpr) | /// Not(ViewExpr) | /// And(ViewExpr, ViewExpr) | /// Or(ViewExpr, ViewExpr) | /// IsNull(ViewExpr) /// - Projection = (see ViewExpressionValidator.Visit(DbProjectExpression) /// NewInstance{TargetEntity}(ViewExpr*) | /// NewInstance{Row}(ViewExpr*) /// internal static class ViewValidator { ////// Determines whether the given view is valid. /// /// Query view to validate. /// Store item collection. /// Mapping in which view is declared. ///Errors in view definition. internal static IEnumerableValidateQueryView(DbQueryCommandTree view, StoreItemCollection storeItemCollection, StorageSetMapping setMapping, EntityTypeBase elementType, bool includeSubtypes) { ViewExpressionValidator validator = new ViewExpressionValidator(storeItemCollection, setMapping, elementType, includeSubtypes); validator.VisitExpression(view.Query); return validator.Errors; } private sealed class ViewExpressionValidator : BasicExpressionVisitor { private readonly StorageSetMapping _setMapping; private readonly StoreItemCollection _storeItemCollection; private readonly List _errors; private readonly EntityTypeBase _elementType; private readonly bool _includeSubtypes; internal ViewExpressionValidator(StoreItemCollection storeItemCollection, StorageSetMapping setMapping, EntityTypeBase elementType, bool includeSubtypes) { Debug.Assert(null != setMapping); Debug.Assert(null != storeItemCollection); _setMapping = setMapping; _storeItemCollection = storeItemCollection; _errors = new List (); _elementType = elementType; _includeSubtypes = includeSubtypes; } internal IEnumerable Errors { get { return _errors; } } public override void VisitExpression(DbExpression expression) { if (null != expression) { ValidateExpressionKind(expression.ExpressionKind); } base.VisitExpression(expression); } private void ValidateExpressionKind(DbExpressionKind expressionKind) { switch (expressionKind) { // Supported expression kinds case DbExpressionKind.Constant: case DbExpressionKind.Property: case DbExpressionKind.Null: case DbExpressionKind.VariableReference: case DbExpressionKind.Cast: case DbExpressionKind.Case: case DbExpressionKind.Not: case DbExpressionKind.Or: case DbExpressionKind.And: case DbExpressionKind.IsNull: case DbExpressionKind.Equals: case DbExpressionKind.NotEquals: case DbExpressionKind.LessThan: case DbExpressionKind.LessThanOrEquals: case DbExpressionKind.GreaterThan: case DbExpressionKind.GreaterThanOrEquals: case DbExpressionKind.Project: case DbExpressionKind.NewInstance: case DbExpressionKind.Filter: case DbExpressionKind.Ref: case DbExpressionKind.UnionAll: case DbExpressionKind.Scan: case DbExpressionKind.FullOuterJoin: case DbExpressionKind.LeftOuterJoin: case DbExpressionKind.InnerJoin: case DbExpressionKind.EntityRef: break; default: string elementString = (_includeSubtypes)?"IsTypeOf("+_elementType.ToString()+")":_elementType.ToString(); _errors.Add(new EdmSchemaError(System.Data.Entity.Strings.Mapping_UnsupportedExpressionKind_QueryView_2( _setMapping.Set.Name, elementString, expressionKind), (int)StorageMappingErrorCode.MappingUnsupportedExpressionKindQueryView, EdmSchemaErrorSeverity.Error, _setMapping.EntityContainerMapping.SourceLocation, _setMapping.StartLineNumber, _setMapping.StartLinePosition)); break; } } public override void Visit(DbPropertyExpression expression) { base.Visit(expression); if (expression.Property.BuiltInTypeKind != BuiltInTypeKind.EdmProperty) { _errors.Add(new EdmSchemaError(System.Data.Entity.Strings.Mapping_UnsupportedPropertyKind_QueryView_3( _setMapping.Set.Name, expression.Property.Name, expression.Property.BuiltInTypeKind), (int)StorageMappingErrorCode.MappingUnsupportedPropertyKindQueryView, EdmSchemaErrorSeverity.Error, _setMapping.EntityContainerMapping.SourceLocation, _setMapping.StartLineNumber, _setMapping.StartLinePosition)); } } public override void Visit(DbNewInstanceExpression expression) { base.Visit(expression); EdmType type = expression.ResultType.EdmType; if (type.BuiltInTypeKind != BuiltInTypeKind.RowType) { // restrict initialization of non-row types to the target of the view if (!_setMapping.Set.ElementType.IsAssignableFrom(type)) { _errors.Add(new EdmSchemaError(System.Data.Entity.Strings.Mapping_UnsupportedInitialization_QueryView_2( _setMapping.Set.Name, type.FullName), (int)StorageMappingErrorCode.MappingUnsupportedInitializationQueryView, EdmSchemaErrorSeverity.Error, _setMapping.EntityContainerMapping.SourceLocation, _setMapping.StartLineNumber, _setMapping.StartLinePosition)); } } } public override void Visit(DbScanExpression expression) { base.Visit(expression); Debug.Assert(null != expression.Target); // verify scan target is in S-space EntitySetBase target = expression.Target; EntityContainer targetContainer = target.EntityContainer; Debug.Assert(null != target.EntityContainer); if ((targetContainer.DataSpace != DataSpace.SSpace)) { _errors.Add(new EdmSchemaError(System.Data.Entity.Strings.Mapping_UnsupportedScanTarget_QueryView_2( _setMapping.Set.Name, target.Name), (int)StorageMappingErrorCode.MappingUnsupportedScanTargetQueryView, EdmSchemaErrorSeverity.Error, _setMapping.EntityContainerMapping.SourceLocation, _setMapping.StartLineNumber, _setMapping.StartLinePosition)); } } } } } // 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
- FormParameter.cs
- PageAdapter.cs
- ClaimComparer.cs
- NativeBuffer.cs
- AsymmetricCryptoHandle.cs
- ObjectListCommandEventArgs.cs
- ToolBarOverflowPanel.cs
- SQLInt32Storage.cs
- ExpressionBuilder.cs
- Typeface.cs
- WebBrowserPermission.cs
- ReflectionUtil.cs
- EndpointBehaviorElementCollection.cs
- ContextMenuStrip.cs
- ProxyWebPart.cs
- TargetParameterCountException.cs
- IERequestCache.cs
- DelimitedListTraceListener.cs
- SqlDependencyUtils.cs
- SoapIncludeAttribute.cs
- IdentityValidationException.cs
- SelectionItemProviderWrapper.cs
- PrimarySelectionGlyph.cs
- prompt.cs
- XhtmlBasicValidationSummaryAdapter.cs
- SvcMapFile.cs
- SQLBoolean.cs
- ColumnHeader.cs
- Identifier.cs
- SiteMapNodeItemEventArgs.cs
- BoundField.cs
- TextServicesDisplayAttribute.cs
- MethodCallTranslator.cs
- HuffModule.cs
- AnnotationResourceCollection.cs
- PenThread.cs
- JavaScriptString.cs
- SoapSchemaImporter.cs
- DiagnosticTraceSource.cs
- ProcessModule.cs
- DeclarativeCatalogPart.cs
- StorageRoot.cs
- DynamicMethod.cs
- RectAnimationUsingKeyFrames.cs
- DeviceSpecificDialogCachedState.cs
- ResourceDictionaryCollection.cs
- listitem.cs
- Group.cs
- OdbcConnectionStringbuilder.cs
- TreeNode.cs
- ConnectionOrientedTransportBindingElement.cs
- MarkupProperty.cs
- CodeDomComponentSerializationService.cs
- OperationContext.cs
- TempEnvironment.cs
- EntityContainerAssociationSet.cs
- ServiceOperation.cs
- OrderByBuilder.cs
- ServiceDescriptions.cs
- EventEntry.cs
- WebMessageEncoderFactory.cs
- EntityDataSourceDesignerHelper.cs
- OverrideMode.cs
- MessageContractImporter.cs
- RegexParser.cs
- CompoundFileIOPermission.cs
- SamlAdvice.cs
- AnnotationHelper.cs
- BindableTemplateBuilder.cs
- HyperLinkStyle.cs
- WorkflowMessageEventArgs.cs
- XhtmlMobileTextWriter.cs
- SendParametersContent.cs
- ConnectionStringEditor.cs
- ChannelSinkStacks.cs
- ConstantSlot.cs
- Error.cs
- RemotingConfiguration.cs
- StringValueSerializer.cs
- DodSequenceMerge.cs
- SynchronousReceiveElement.cs
- ListSortDescription.cs
- PaginationProgressEventArgs.cs
- XmlElementList.cs
- WebSysDisplayNameAttribute.cs
- X509Utils.cs
- DynamicRouteExpression.cs
- CodeMemberMethod.cs
- SecurityContext.cs
- TextElementEditingBehaviorAttribute.cs
- DateTimeAutomationPeer.cs
- XmlCountingReader.cs
- ComPlusServiceHost.cs
- SqlRowUpdatingEvent.cs
- EdmValidator.cs
- EmptyStringExpandableObjectConverter.cs
- ExtensionMethods.cs
- BreadCrumbTextConverter.cs
- remotingproxy.cs
- XMLSyntaxException.cs