Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / Metadata / MappingMetadataHelper.cs / 1305376 / MappingMetadataHelper.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System.Collections.Generic; using System.Collections; using System.Diagnostics; using System.Globalization; using System.Reflection; using System.Text; using System.Xml; using System.Xml.XPath; using System.Data.Mapping; using System.IO; using System.Security; using System.Security.Permissions; using System.Data.Common.Utils; using System.Collections.ObjectModel; using System.Linq; namespace System.Data.Metadata.Edm { ////// Helps answer mapping questions since we don't have a good API for mapping information /// internal static class MappingMetadataHelper { internal static IEnumerableGetMappingsForEntitySetAndType(StorageMappingItemCollection mappingCollection, EntityContainer container, EntitySetBase entitySet, EntityTypeBase entityType) { Debug.Assert(entityType != null, "EntityType parameter should not be null."); StorageEntityContainerMapping containerMapping = GetEntityContainerMap(mappingCollection, container); StorageSetMapping extentMap = containerMapping.GetSetMapping(entitySet.Name); //The Set may have no mapping if (extentMap != null) { //for each mapping fragment of Type we are interested in within the given set //Check use of IsOfTypes in Code review foreach (StorageTypeMapping typeMap in extentMap.TypeMappings.Where(map => map.Types.Union(map.IsOfTypes).Contains(entityType))) { yield return typeMap; } } } /// /// Returns all mapping fragments for the given entity set's types and their parent types. /// internal static IEnumerableGetMappingsForEntitySetAndSuperTypes(StorageMappingItemCollection mappingCollection, EntityContainer container, EntitySetBase entitySet, EntityTypeBase childEntityType) { return MetadataHelper.GetTypeAndParentTypesOf(childEntityType, mappingCollection.EdmItemCollection, true /*includeAbstractTypes*/).SelectMany( edmType => edmType.EdmEquals(childEntityType) ? GetMappingsForEntitySetAndType(mappingCollection, container, entitySet, (edmType as EntityTypeBase)) : GetIsTypeOfMappingsForEntitySetAndType(mappingCollection, container, entitySet, (edmType as EntityTypeBase), childEntityType) ).ToList(); } /// /// Returns mappings for the given set/type only if the mapping applies also to childEntittyType either via IsTypeOf or explicitly specifying multiple types in mapping fragments. /// private static IEnumerableGetIsTypeOfMappingsForEntitySetAndType(StorageMappingItemCollection mappingCollection, EntityContainer container, EntitySetBase entitySet, EntityTypeBase entityType, EntityTypeBase childEntityType) { foreach (var mapping in GetMappingsForEntitySetAndType(mappingCollection, container, entitySet, entityType)) { if (mapping.IsOfTypes.Any(parentType => parentType.IsAssignableFrom(childEntityType)) || mapping.Types.Contains(childEntityType)) { yield return mapping; } } } internal static IEnumerable GetFunctionMappingsForEntitySetAndType(StorageMappingItemCollection mappingCollection, EntityContainer container, EntitySetBase entitySet, EntityTypeBase entityType) { StorageEntityContainerMapping containerMapping = GetEntityContainerMap(mappingCollection, container); StorageSetMapping extentMap = containerMapping.GetSetMapping(entitySet.Name); StorageEntitySetMapping entitySetMapping = extentMap as StorageEntitySetMapping; //The Set may have no mapping if (entitySetMapping != null) { if (entitySetMapping != null) //could be association set mapping { foreach (var v in entitySetMapping.FunctionMappings.Where(functionMap => functionMap.EntityType.Equals(entityType))) { yield return v; } } } } internal static StorageEntityContainerMapping GetEntityContainerMap(StorageMappingItemCollection mappingCollection, EntityContainer entityContainer) { ReadOnlyCollection entityContainerMaps = mappingCollection.GetItems (); StorageEntityContainerMapping entityContainerMap = null; foreach (StorageEntityContainerMapping map in entityContainerMaps) { if ((entityContainer.Equals(map.EdmEntityContainer)) || (entityContainer.Equals(map.StorageEntityContainer))) { entityContainerMap = map; break; } } if (entityContainerMap == null) { throw new MappingException(System.Data.Entity.Strings.Mapping_NotFound_EntityContainer(entityContainer.Name)); } return entityContainerMap; } } } // 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
- StringWriter.cs
- FormViewPagerRow.cs
- IMembershipProvider.cs
- MimeTypePropertyAttribute.cs
- Missing.cs
- SpeechRecognitionEngine.cs
- WindowsScrollBar.cs
- UrlMappingCollection.cs
- MediaSystem.cs
- GlyphInfoList.cs
- PropertyRef.cs
- XsdValidatingReader.cs
- SendActivityEventArgs.cs
- ErrorHandlerFaultInfo.cs
- HTMLTagNameToTypeMapper.cs
- FileDialogPermission.cs
- EventManager.cs
- InternalControlCollection.cs
- connectionpool.cs
- StoryFragments.cs
- ItemMap.cs
- RetrieveVirtualItemEventArgs.cs
- PageThemeCodeDomTreeGenerator.cs
- EncryptedKeyHashIdentifierClause.cs
- Rights.cs
- DeflateStreamAsyncResult.cs
- InfoCardService.cs
- InputLanguage.cs
- HitTestParameters.cs
- WebControlsSection.cs
- DiscoveryClient.cs
- Selector.cs
- hresults.cs
- BaseInfoTable.cs
- WindowsNonControl.cs
- PreservationFileWriter.cs
- DbConnectionPoolGroupProviderInfo.cs
- MarshalByRefObject.cs
- OleServicesContext.cs
- securitycriticaldataformultiplegetandset.cs
- TextAction.cs
- FragmentNavigationEventArgs.cs
- SamlSerializer.cs
- FormViewPagerRow.cs
- UnsignedPublishLicense.cs
- CompositionAdorner.cs
- CompressedStack.cs
- BaseAddressElementCollection.cs
- Rotation3D.cs
- SymmetricSecurityProtocolFactory.cs
- DesignerExtenders.cs
- TextEditorSelection.cs
- PageParser.cs
- XamlRtfConverter.cs
- Stack.cs
- SQLByteStorage.cs
- UrlPath.cs
- HeaderCollection.cs
- AsymmetricSignatureFormatter.cs
- TaiwanCalendar.cs
- NavigationProgressEventArgs.cs
- SqlDataSourceTableQuery.cs
- ObjectDataSourceDesigner.cs
- TextSelectionHelper.cs
- XmlSchemaAnyAttribute.cs
- XmlMemberMapping.cs
- AdornedElementPlaceholder.cs
- ObjectConverter.cs
- BooleanFacetDescriptionElement.cs
- ArgumentNullException.cs
- TextProperties.cs
- PlatformCulture.cs
- SmiEventSink_DeferedProcessing.cs
- Size3DConverter.cs
- DrawingCollection.cs
- PreparingEnlistment.cs
- CodeAccessSecurityEngine.cs
- InfocardExtendedInformationEntry.cs
- OpCodes.cs
- SslSecurityTokenParameters.cs
- FrameworkEventSource.cs
- httpserverutility.cs
- RemoteDebugger.cs
- ForeignConstraint.cs
- ColorContextHelper.cs
- MobileControlPersister.cs
- ButtonChrome.cs
- HtmlInputFile.cs
- HttpModulesSection.cs
- XmlTextReaderImpl.cs
- UxThemeWrapper.cs
- ComboBox.cs
- CalendarDesigner.cs
- GridViewRowCollection.cs
- TraceSection.cs
- RectangleGeometry.cs
- SelectionService.cs
- ScrollProperties.cs
- OrCondition.cs
- XmlSchemaSimpleTypeRestriction.cs