Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / ndp / fx / src / DataEntity / System / Data / Objects / RelationshipWrapper.cs / 2 / RelationshipWrapper.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System; using System.Collections.Generic; using System.Diagnostics; using System.Data.Metadata.Edm; namespace System.Data.Objects { internal sealed class RelationshipWrapper : IEquatable{ internal readonly AssociationSet AssociationSet; internal readonly EntityKey Key0; internal readonly EntityKey Key1; internal RelationshipWrapper(AssociationSet extent, EntityKey key) { Debug.Assert(null != extent, "null RelationshipWrapper"); Debug.Assert(null != (object)key, "null key"); this.AssociationSet = extent; this.Key0 = key; this.Key1 = key; } internal RelationshipWrapper(RelationshipWrapper wrapper, int ordinal, EntityKey key) { Debug.Assert(null != wrapper, "null RelationshipWrapper"); Debug.Assert((uint)ordinal <= 1u, "ordinal out of range"); Debug.Assert(null != (object)key, "null key2"); this.AssociationSet = wrapper.AssociationSet; this.Key0 = (0 == ordinal) ? key : wrapper.Key0; this.Key1 = (0 == ordinal) ? wrapper.Key1 : key; } internal RelationshipWrapper(AssociationSet extent, KeyValuePair roleAndKey1, KeyValuePair roleAndKey2) : this(extent, roleAndKey1.Key, roleAndKey1.Value, roleAndKey2.Key, roleAndKey2.Value) { } internal RelationshipWrapper(AssociationSet extent, string role0, EntityKey key0, string role1, EntityKey key1) { Debug.Assert(null != extent, "null AssociationSet"); Debug.Assert(null != (object)key0, "null key0"); Debug.Assert(null != (object)key1, "null key1"); AssociationSet = extent; Debug.Assert(extent.ElementType.AssociationEndMembers.Count == 2, "only 2 ends are supported"); // this assert is explictly commented out to show that the two are similar but different // we should always use AssociationEndMembers, never CorrespondingAssociationEndMember //Debug.Assert(AssociationSet.AssociationSetEnds.Count == 2, "only 2 set ends supported"); //Debug.Assert(extent.ElementType.AssociationEndMembers[0] == AssociationSet.AssociationSetEnds[0].CorrespondingAssociationEndMember, "should be same end member"); //Debug.Assert(extent.ElementType.AssociationEndMembers[1] == AssociationSet.AssociationSetEnds[1].CorrespondingAssociationEndMember, "should be same end member"); if (extent.ElementType.AssociationEndMembers[0].Name == role0) { Debug.Assert(extent.ElementType.AssociationEndMembers[1].Name == role1, "a)roleAndKey1 Name differs"); Key0 = key0; Key1 = key1; } else { Debug.Assert(extent.ElementType.AssociationEndMembers[0].Name == role1, "b)roleAndKey1 Name differs"); Debug.Assert(extent.ElementType.AssociationEndMembers[1].Name == role0, "b)roleAndKey0 Name differs"); Key0 = key1; Key1 = key0; } } internal ReadOnlyMetadataCollection AssociationEndMembers { get { return this.AssociationSet.ElementType.AssociationEndMembers; } } internal AssociationEndMember GetAssociationEndMember(EntityKey key) { Debug.Assert(Key0 == key || Key1 == key, "didn't match a key"); return AssociationEndMembers[(Key0 != key) ? 1 : 0]; } internal EntityKey GetOtherEntityKey(EntityKey key) { return ((Key0 == key) ? Key1 : ((Key1 == key) ? Key0 : null)); } internal EntityKey GetEntityKey(int ordinal) { switch (ordinal) { case 0: return Key0; case 1: return Key1; default: throw EntityUtil.ArgumentOutOfRange("ordinal"); } } public override int GetHashCode() { return this.AssociationSet.Name.GetHashCode() ^ (this.Key0.GetHashCode() + this.Key1.GetHashCode()); } public override bool Equals(object obj) { return Equals(obj as RelationshipWrapper); } public bool Equals(RelationshipWrapper wrapper) { return (Object.ReferenceEquals(this, wrapper) || ((null != wrapper) && Object.ReferenceEquals(this.AssociationSet, wrapper.AssociationSet) && this.Key0.Equals(wrapper.Key0) && this.Key1.Equals(wrapper.Key1))); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //---------------------------------------------------------------------- // // Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System; using System.Collections.Generic; using System.Diagnostics; using System.Data.Metadata.Edm; namespace System.Data.Objects { internal sealed class RelationshipWrapper : IEquatable{ internal readonly AssociationSet AssociationSet; internal readonly EntityKey Key0; internal readonly EntityKey Key1; internal RelationshipWrapper(AssociationSet extent, EntityKey key) { Debug.Assert(null != extent, "null RelationshipWrapper"); Debug.Assert(null != (object)key, "null key"); this.AssociationSet = extent; this.Key0 = key; this.Key1 = key; } internal RelationshipWrapper(RelationshipWrapper wrapper, int ordinal, EntityKey key) { Debug.Assert(null != wrapper, "null RelationshipWrapper"); Debug.Assert((uint)ordinal <= 1u, "ordinal out of range"); Debug.Assert(null != (object)key, "null key2"); this.AssociationSet = wrapper.AssociationSet; this.Key0 = (0 == ordinal) ? key : wrapper.Key0; this.Key1 = (0 == ordinal) ? wrapper.Key1 : key; } internal RelationshipWrapper(AssociationSet extent, KeyValuePair roleAndKey1, KeyValuePair roleAndKey2) : this(extent, roleAndKey1.Key, roleAndKey1.Value, roleAndKey2.Key, roleAndKey2.Value) { } internal RelationshipWrapper(AssociationSet extent, string role0, EntityKey key0, string role1, EntityKey key1) { Debug.Assert(null != extent, "null AssociationSet"); Debug.Assert(null != (object)key0, "null key0"); Debug.Assert(null != (object)key1, "null key1"); AssociationSet = extent; Debug.Assert(extent.ElementType.AssociationEndMembers.Count == 2, "only 2 ends are supported"); // this assert is explictly commented out to show that the two are similar but different // we should always use AssociationEndMembers, never CorrespondingAssociationEndMember //Debug.Assert(AssociationSet.AssociationSetEnds.Count == 2, "only 2 set ends supported"); //Debug.Assert(extent.ElementType.AssociationEndMembers[0] == AssociationSet.AssociationSetEnds[0].CorrespondingAssociationEndMember, "should be same end member"); //Debug.Assert(extent.ElementType.AssociationEndMembers[1] == AssociationSet.AssociationSetEnds[1].CorrespondingAssociationEndMember, "should be same end member"); if (extent.ElementType.AssociationEndMembers[0].Name == role0) { Debug.Assert(extent.ElementType.AssociationEndMembers[1].Name == role1, "a)roleAndKey1 Name differs"); Key0 = key0; Key1 = key1; } else { Debug.Assert(extent.ElementType.AssociationEndMembers[0].Name == role1, "b)roleAndKey1 Name differs"); Debug.Assert(extent.ElementType.AssociationEndMembers[1].Name == role0, "b)roleAndKey0 Name differs"); Key0 = key1; Key1 = key0; } } internal ReadOnlyMetadataCollection AssociationEndMembers { get { return this.AssociationSet.ElementType.AssociationEndMembers; } } internal AssociationEndMember GetAssociationEndMember(EntityKey key) { Debug.Assert(Key0 == key || Key1 == key, "didn't match a key"); return AssociationEndMembers[(Key0 != key) ? 1 : 0]; } internal EntityKey GetOtherEntityKey(EntityKey key) { return ((Key0 == key) ? Key1 : ((Key1 == key) ? Key0 : null)); } internal EntityKey GetEntityKey(int ordinal) { switch (ordinal) { case 0: return Key0; case 1: return Key1; default: throw EntityUtil.ArgumentOutOfRange("ordinal"); } } public override int GetHashCode() { return this.AssociationSet.Name.GetHashCode() ^ (this.Key0.GetHashCode() + this.Key1.GetHashCode()); } public override bool Equals(object obj) { return Equals(obj as RelationshipWrapper); } public bool Equals(RelationshipWrapper wrapper) { return (Object.ReferenceEquals(this, wrapper) || ((null != wrapper) && Object.ReferenceEquals(this.AssociationSet, wrapper.AssociationSet) && this.Key0.Equals(wrapper.Key0) && this.Key1.Equals(wrapper.Key1))); } } } // 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
- SuppressMergeCheckAttribute.cs
- DataGridViewLinkCell.cs
- X509ThumbprintKeyIdentifierClause.cs
- OpenFileDialog.cs
- ManipulationBoundaryFeedbackEventArgs.cs
- ScrollItemPattern.cs
- ZipIOExtraField.cs
- DataGridCommandEventArgs.cs
- BasicCellRelation.cs
- SafeRightsManagementSessionHandle.cs
- DataColumnMapping.cs
- SocketManager.cs
- SqlColumnizer.cs
- PagerSettings.cs
- ChtmlTextWriter.cs
- SubMenuStyleCollection.cs
- DbProviderFactories.cs
- SpeechAudioFormatInfo.cs
- XslNumber.cs
- Input.cs
- HorizontalAlignConverter.cs
- MetadataCache.cs
- TextChange.cs
- WebDescriptionAttribute.cs
- ComNativeDescriptor.cs
- SafeHandles.cs
- FixedSOMLineRanges.cs
- SID.cs
- FrugalMap.cs
- TailCallAnalyzer.cs
- ConstraintConverter.cs
- EventDescriptor.cs
- DropDownList.cs
- ToolStripItemCollection.cs
- XmlSchemaAnnotated.cs
- AssemblyBuilder.cs
- CollectionContainer.cs
- HttpHandler.cs
- SqlServer2KCompatibilityAnnotation.cs
- ClientData.cs
- SiteMapHierarchicalDataSourceView.cs
- XmlSchemaSequence.cs
- QueryCacheKey.cs
- TreeViewItem.cs
- RuleInfoComparer.cs
- DeflateEmulationStream.cs
- InProcStateClientManager.cs
- RemoteHelper.cs
- _Win32.cs
- KeyInterop.cs
- OleDbDataReader.cs
- XmlSchemaCollection.cs
- AssemblyNameEqualityComparer.cs
- Switch.cs
- DoubleCollection.cs
- Nullable.cs
- RestClientProxyHandler.cs
- Point4D.cs
- ManipulationDelta.cs
- HostingEnvironmentSection.cs
- SoapSchemaImporter.cs
- SourceFilter.cs
- SecurityState.cs
- PhysicalFontFamily.cs
- ComEventsHelper.cs
- CharEntityEncoderFallback.cs
- BitHelper.cs
- FrameSecurityDescriptor.cs
- PropertyHelper.cs
- URL.cs
- RootProfilePropertySettingsCollection.cs
- MemberRelationshipService.cs
- cookiecontainer.cs
- ListViewItemSelectionChangedEvent.cs
- SingleStorage.cs
- FileDialogCustomPlacesCollection.cs
- _Rfc2616CacheValidators.cs
- WebPageTraceListener.cs
- TextStore.cs
- RequestCachePolicyConverter.cs
- AppDomainProtocolHandler.cs
- AsyncPostBackErrorEventArgs.cs
- ZipIOExtraFieldPaddingElement.cs
- IdentifierElement.cs
- MarkupExtensionReturnTypeAttribute.cs
- TextRangeSerialization.cs
- BinaryObjectInfo.cs
- JsonQNameDataContract.cs
- HashSetEqualityComparer.cs
- PasswordBox.cs
- EventSetter.cs
- ChannelFactoryRefCache.cs
- FileEnumerator.cs
- CharKeyFrameCollection.cs
- WindowsStartMenu.cs
- ActivityFunc.cs
- SmtpReplyReaderFactory.cs
- RtfToken.cs
- StaticResourceExtension.cs
- CheckBoxField.cs