Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / Metadata / ClrPerspective.cs / 1305376 / ClrPerspective.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- namespace System.Data.Metadata.Edm { using System.Collections.Generic; using System.Data.Mapping; using System.Diagnostics; ////// Internal helper class for query /// internal sealed class ClrPerspective : Perspective { private EntityContainer _defaultContainer; #region Constructors ////// Creates a new instance of perspective class so that query can work /// ignorant of all spaces /// /// internal ClrPerspective(MetadataWorkspace metadataWorkspace) : base(metadataWorkspace, DataSpace.CSpace) { } #endregion //Constructors #region Methods ////// Given a clrType attempt to return the corresponding target type from /// the worksapce /// /// The clr type to resolve /// an out param for the typeUsage to be resolved to ///true if a TypeUsage can be found for the target type internal bool TryGetType(Type clrType, out TypeUsage outTypeUsage) { return TryGetTypeByName(clrType.FullName, false /*ignoreCase*/, out outTypeUsage); } ////// Given the type in the target space and the member name in the source space, /// get the corresponding member in the target space /// For e.g. consider a Conceptual Type Foo with a member bar and a CLR type /// XFoo with a member YBar. If one has a reference to Foo one can /// invoke GetMember(Foo,"YBar") to retrieve the member metadata for bar /// /// The type in the target perspective /// the name of the member in the source perspective /// true for case-insensitive lookup /// returns the edmMember if a match is found ///true if a match is found, otherwise false internal override bool TryGetMember(StructuralType type, String memberName, bool ignoreCase, out EdmMember outMember) { outMember = null; Map map = null; if (this.MetadataWorkspace.TryGetMap(type, DataSpace.OCSpace, out map)) { ObjectTypeMapping objectTypeMap = map as ObjectTypeMapping; if (objectTypeMap!=null) { ObjectMemberMapping objPropertyMapping = objectTypeMap.GetMemberMapForClrMember(memberName, ignoreCase); if (null != objPropertyMapping) { outMember = objPropertyMapping.EdmMember; return true; } } } return false; } ////// Look up a type in the target data space based upon the fullName /// /// fullName /// true for case-insensitive lookup /// The type usage object to return ///True if the retrieval succeeded internal override bool TryGetTypeByName(string fullName, bool ignoreCase, out TypeUsage typeUsage) { typeUsage = null; Map map = null; // From ClrPerspective, we should not allow anything from SSpace. So make sure that the CSpace type does not // have the Target attribute if (this.MetadataWorkspace.TryGetMap(fullName, DataSpace.OSpace, ignoreCase, DataSpace.OCSpace, out map)) { // Check if it's primitive type, if so, then use the MetadataWorkspace to get the mapped primitive type if (map.EdmItem.BuiltInTypeKind == BuiltInTypeKind.PrimitiveType) { // Reassign the variable with the provider primitive type, then create the type usage PrimitiveType primitiveType = this.MetadataWorkspace.GetMappedPrimitiveType(((PrimitiveType)map.EdmItem).PrimitiveTypeKind, DataSpace.CSpace); if (primitiveType != null) { typeUsage = EdmProviderManifest.Instance.GetCanonicalModelTypeUsage(primitiveType.PrimitiveTypeKind); } } else { Debug.Assert(((GlobalItem)map.EdmItem).DataSpace == DataSpace.CSpace); typeUsage = GetMappedTypeUsage(map); } } return (null != typeUsage); } ////// get the default container /// ///The default container internal override EntityContainer GetDefaultContainer() { return _defaultContainer; } internal void SetDefaultContainer(string defaultContainerName) { EntityContainer container = null; if (!String.IsNullOrEmpty(defaultContainerName)) { if (!MetadataWorkspace.TryGetEntityContainer(defaultContainerName, DataSpace.CSpace, out container)) { throw EntityUtil.InvalidDefaultContainerName("defaultContainerName", defaultContainerName); } } _defaultContainer = container; } ////// Given a map, dereference the EdmItem, ensure that it is /// an EdmType and return a TypeUsage for the type, otherwise /// return null. /// /// The OC map to use to get the EdmType ///A TypeUsage for the mapped EdmType or null if no EdmType was mapped private static TypeUsage GetMappedTypeUsage(Map map) { TypeUsage typeUsage = null; if (null != map) { MetadataItem item = map.EdmItem; EdmType edmItem = item as EdmType; if (null != item && edmItem!=null) { typeUsage = TypeUsage.Create(edmItem); } } return typeUsage; } #endregion } } // 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
- TableItemStyle.cs
- ProxyFragment.cs
- SqlNode.cs
- ErrorStyle.cs
- CompilerState.cs
- ConfigXmlComment.cs
- DataRecordObjectView.cs
- ItemDragEvent.cs
- FSWPathEditor.cs
- FormViewAutoFormat.cs
- GatewayIPAddressInformationCollection.cs
- EdmComplexTypeAttribute.cs
- AutomationPropertyChangedEventArgs.cs
- RectangleGeometry.cs
- DependencyProperty.cs
- ExtendedProtectionPolicyTypeConverter.cs
- ISAPIWorkerRequest.cs
- WaitForChangedResult.cs
- PropertyMap.cs
- TimeSpanSecondsConverter.cs
- DictionaryEntry.cs
- XmlCountingReader.cs
- HelpOperationInvoker.cs
- AppDomainProtocolHandler.cs
- VersionConverter.cs
- Line.cs
- InputScopeNameConverter.cs
- SourceFileInfo.cs
- InkCollectionBehavior.cs
- ColumnTypeConverter.cs
- PathGeometry.cs
- ToolStripPanel.cs
- ConfigurationManagerInternalFactory.cs
- IdentifierCollection.cs
- LocationReferenceValue.cs
- BounceEase.cs
- SiteMapDataSource.cs
- SafeRightsManagementQueryHandle.cs
- ConfigXmlAttribute.cs
- ScriptResourceDefinition.cs
- CommandPlan.cs
- GridEntry.cs
- datacache.cs
- CursorConverter.cs
- LogWriteRestartAreaAsyncResult.cs
- TileModeValidation.cs
- DataDesignUtil.cs
- Triangle.cs
- CompilerInfo.cs
- PrintDialog.cs
- WindowInteractionStateTracker.cs
- GuidelineCollection.cs
- ArcSegment.cs
- COM2FontConverter.cs
- BrowserDefinition.cs
- followingsibling.cs
- XPathDocumentBuilder.cs
- ChildChangedEventArgs.cs
- ObjectTypeMapping.cs
- ResourceContainerWrapper.cs
- ThreadStateException.cs
- RecognitionEventArgs.cs
- RenderOptions.cs
- ApplicationFileCodeDomTreeGenerator.cs
- _KerberosClient.cs
- ParserExtension.cs
- PenCursorManager.cs
- CharacterBufferReference.cs
- StandardCommands.cs
- VariantWrapper.cs
- DashStyles.cs
- FillBehavior.cs
- Repeater.cs
- Vector3DKeyFrameCollection.cs
- DataFormats.cs
- InlinedAggregationOperatorEnumerator.cs
- StrokeNodeEnumerator.cs
- Coordinator.cs
- formatstringdialog.cs
- ComponentConverter.cs
- SimpleBitVector32.cs
- LightweightEntityWrapper.cs
- SwitchElementsCollection.cs
- ValueType.cs
- AudioStateChangedEventArgs.cs
- SqlSelectStatement.cs
- SeverityFilter.cs
- GridPatternIdentifiers.cs
- XslCompiledTransform.cs
- BitmapEffectRenderDataResource.cs
- CodeDirectoryCompiler.cs
- XPathScanner.cs
- DetailsView.cs
- Column.cs
- PropertyInformationCollection.cs
- StrokeIntersection.cs
- DataConnectionHelper.cs
- StatusStrip.cs
- EmptyControlCollection.cs
- Propagator.Evaluator.cs