Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / Metadata / Edm / NavigationProperty.cs / 1305376 / NavigationProperty.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System.Collections.Generic; using System.Data.Common; using System.Diagnostics; using System.Threading; using System.Linq; namespace System.Data.Metadata.Edm { ////// Represent the edm navigation property class /// public sealed class NavigationProperty : EdmMember { #region Constructors ////// Initializes a new instance of the navigation property class /// /// name of the navigation property /// TypeUsage object containing the navigation property type and its facets ///Thrown if name or typeUsage arguments are null ///Thrown if name argument is empty string internal NavigationProperty(string name, TypeUsage typeUsage) : base(name, typeUsage) { EntityUtil.CheckStringArgument(name, "name"); EntityUtil.GenericCheckArgumentNull(typeUsage, "typeUsage"); _accessor = new NavigationPropertyAccessor(name); } ////// Initializes a new OSpace instance of the property class /// /// name of the property /// TypeUsage object containing the property type and its facets /// for the property internal NavigationProperty(string name, TypeUsage typeUsage, System.Reflection.PropertyInfo propertyInfo) : this(name, typeUsage) { System.Diagnostics.Debug.Assert(name == propertyInfo.Name, "different PropertyName?"); if (null != propertyInfo) { System.Reflection.MethodInfo method; method = propertyInfo.GetGetMethod(); PropertyGetterHandle = ((null != method) ? method.MethodHandle : default(System.RuntimeMethodHandle)); } } #endregion ////// Returns the kind of the type /// public override BuiltInTypeKind BuiltInTypeKind { get { return BuiltInTypeKind.NavigationProperty; } } #region Fields internal const string RelationshipTypeNamePropertyName = "RelationshipType"; internal const string ToEndMemberNamePropertyName = "ToEndMember"; private RelationshipType _relationshipType; private RelationshipEndMember _toEndMember; private RelationshipEndMember _fromEndMember; ///Store the handle, allowing the PropertyInfo/MethodInfo/Type references to be GC'd internal readonly System.RuntimeMethodHandle PropertyGetterHandle; ///cached dynamic methods to access the property values from a CLR instance private readonly NavigationPropertyAccessor _accessor; #endregion ////// Gets/Sets the relationship type that this navigation property operates on /// ///Thrown if the NavigationProperty instance is in ReadOnly state [MetadataProperty(BuiltInTypeKind.RelationshipType, false)] public RelationshipType RelationshipType { get { return _relationshipType; } internal set { _relationshipType = value; } } ////// Gets/Sets the to relationship end member in the navigation /// ///Thrown if the NavigationProperty instance is in ReadOnly state [MetadataProperty(BuiltInTypeKind.RelationshipEndMember, false)] public RelationshipEndMember ToEndMember { get { return _toEndMember; } internal set { _toEndMember = value; } } ////// Gets/Sets the from relationship end member in the navigation /// ///Thrown if the NavigationProperty instance is in ReadOnly state [MetadataProperty(BuiltInTypeKind.RelationshipEndMember, false)] public RelationshipEndMember FromEndMember { get { return _fromEndMember; } internal set { _fromEndMember = value; } } internal NavigationPropertyAccessor Accessor { get { return _accessor; } } ////// Where the given navigation property is on the dependent end of a referential constraint, /// returns the foreign key properties. Otherwise, returns an empty set. We will return the members in the order /// of the principal end key properties. /// ///Foreign key properties public IEnumerableGetDependentProperties() { // Get the declared type AssociationType associationType = (AssociationType)this.RelationshipType; Debug.Assert( associationType.ReferentialConstraints != null, "ReferenceConstraints cannot be null"); if (associationType.ReferentialConstraints.Count > 0) { ReferentialConstraint rc = associationType.ReferentialConstraints[0]; RelationshipEndMember dependentEndMember = rc.ToRole; if (dependentEndMember.EdmEquals(this.FromEndMember)) { //Order the dependant properties in the order of principal end's key members. var keyMembers = rc.FromRole.GetEntityType().KeyMembers; var dependantProperties = new List (keyMembers.Count); for (int i = 0; i < keyMembers.Count; i++) { dependantProperties.Add(rc.ToProperties[rc.FromProperties.IndexOf(((EdmProperty)keyMembers[i]))]); } return dependantProperties.AsReadOnly(); } } return Enumerable.Empty (); } } } // 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
- TraceHandlerErrorFormatter.cs
- XmlSchemaGroupRef.cs
- DataGridViewAutoSizeColumnModeEventArgs.cs
- CodeDomSerializerBase.cs
- DataGridCellItemAutomationPeer.cs
- MbpInfo.cs
- NetMsmqSecurity.cs
- DataSourceControlBuilder.cs
- TokenizerHelper.cs
- ConsumerConnectionPointCollection.cs
- XamlReaderHelper.cs
- OpCodes.cs
- GradientSpreadMethodValidation.cs
- Canonicalizers.cs
- FramingFormat.cs
- ExcCanonicalXml.cs
- COM2IPerPropertyBrowsingHandler.cs
- ZipArchive.cs
- pingexception.cs
- ContainerFilterService.cs
- DrawingCollection.cs
- SerializationInfo.cs
- SoapExtension.cs
- TextAdaptor.cs
- CompleteWizardStep.cs
- ClockGroup.cs
- OutgoingWebResponseContext.cs
- EnumerableRowCollectionExtensions.cs
- ToolStripContainerDesigner.cs
- ContourSegment.cs
- DecoderNLS.cs
- ResourceProperty.cs
- TraceContextRecord.cs
- XmlEntityReference.cs
- IPAddressCollection.cs
- TypeLibConverter.cs
- GridView.cs
- InfoCardBaseException.cs
- MessageQuerySet.cs
- HttpRequestTraceRecord.cs
- OdbcStatementHandle.cs
- PackagingUtilities.cs
- AbstractDataSvcMapFileLoader.cs
- FlowDocumentScrollViewer.cs
- XPathDocument.cs
- CorrelationKeyCalculator.cs
- EditCommandColumn.cs
- DataViewListener.cs
- ControlValuePropertyAttribute.cs
- BitmapScalingModeValidation.cs
- LookupNode.cs
- VScrollProperties.cs
- DesignSurface.cs
- HeaderedContentControl.cs
- InputLangChangeRequestEvent.cs
- Compilation.cs
- AdapterDictionary.cs
- SettingsSavedEventArgs.cs
- FlowDocumentPage.cs
- HwndSourceParameters.cs
- DocumentViewerHelper.cs
- isolationinterop.cs
- UTF8Encoding.cs
- recordstatescratchpad.cs
- DefaultValueAttribute.cs
- ObjectComplexPropertyMapping.cs
- MaskDescriptor.cs
- FixedSOMElement.cs
- ByteStorage.cs
- InvalidEnumArgumentException.cs
- MultiPageTextView.cs
- FocusWithinProperty.cs
- EncoderParameters.cs
- StatusBarAutomationPeer.cs
- PageAdapter.cs
- AngleUtil.cs
- ConcurrentBag.cs
- RepeaterCommandEventArgs.cs
- Point3DCollectionValueSerializer.cs
- Point3DKeyFrameCollection.cs
- ModelPropertyDescriptor.cs
- ControlBindingsConverter.cs
- TabControlAutomationPeer.cs
- InfoCardRSAPKCS1KeyExchangeFormatter.cs
- Translator.cs
- UrlPath.cs
- JavaScriptObjectDeserializer.cs
- DataFormats.cs
- ExceptionTranslationTable.cs
- ProfileSettingsCollection.cs
- ClassicBorderDecorator.cs
- DisplayNameAttribute.cs
- TypeExtension.cs
- Trace.cs
- ExtensionSimplifierMarkupObject.cs
- IdentityNotMappedException.cs
- BrowserTree.cs
- KnownTypesHelper.cs
- EntryWrittenEventArgs.cs
- DrawingState.cs