private ODataPayloadKind ParseContextUriFragment(string fragment, Func <IEdmType, string, IEdmType> clientCustomTypeResolver, bool throwIfMetadataConflict, out bool isUndeclared) { bool hasItemSelector = false; ODataDeltaKind kind = ODataDeltaKind.None; isUndeclared = false; // Deal with /$entity if (fragment.EndsWith(ODataConstants.ContextUriFragmentItemSelector, StringComparison.Ordinal)) { hasItemSelector = true; fragment = fragment.Substring(0, fragment.Length - ODataConstants.ContextUriFragmentItemSelector.Length); } else if (fragment.EndsWith(ODataConstants.ContextUriDeltaResourceSet, StringComparison.Ordinal)) { kind = ODataDeltaKind.ResourceSet; fragment = fragment.Substring(0, fragment.Length - ODataConstants.ContextUriDeltaResourceSet.Length); } else if (fragment.EndsWith(ODataConstants.ContextUriDeletedEntry, StringComparison.Ordinal)) { kind = ODataDeltaKind.DeletedEntry; fragment = fragment.Substring(0, fragment.Length - ODataConstants.ContextUriDeletedEntry.Length); } else if (fragment.EndsWith(ODataConstants.ContextUriDeltaLink, StringComparison.Ordinal)) { kind = ODataDeltaKind.Link; fragment = fragment.Substring(0, fragment.Length - ODataConstants.ContextUriDeltaLink.Length); } else if (fragment.EndsWith(ODataConstants.ContextUriDeletedLink, StringComparison.Ordinal)) { kind = ODataDeltaKind.DeletedLink; fragment = fragment.Substring(0, fragment.Length - ODataConstants.ContextUriDeletedLink.Length); } this.parseResult.DeltaKind = kind; // Deal with query option if (fragment.EndsWith(")", StringComparison.Ordinal)) { int index = fragment.Length - 2; for (int rcount = 1; rcount > 0 && index > 0; --index) { switch (fragment[index]) { case '(': rcount--; break; case ')': rcount++; break; } } if (index == 0) { throw new ODataException(ODataErrorStrings.ODataJsonLightContextUriParser_InvalidContextUrl(UriUtils.UriToString(this.parseResult.ContextUri))); } string previous = fragment.Substring(0, index + 1); // Don't treat Collection(Edm.Type) as SelectExpand segment if (!previous.Equals("Collection")) { string selectExpandStr = fragment.Substring(index + 2); selectExpandStr = selectExpandStr.Substring(0, selectExpandStr.Length - 1); // Do not treat Key as SelectExpand segment if (KeyPattern.IsMatch(selectExpandStr)) { throw new ODataException(ODataErrorStrings.ODataJsonLightContextUriParser_LastSegmentIsKeySegment(UriUtils.UriToString(this.parseResult.ContextUri))); } this.parseResult.SelectQueryOption = ExtractSelectQueryOption(selectExpandStr); fragment = previous; } } ODataPayloadKind detectedPayloadKind = ODataPayloadKind.Unsupported; EdmTypeResolver edmTypeResolver = new EdmTypeReaderResolver(this.model, clientCustomTypeResolver); if (!fragment.Contains(ODataConstants.UriSegmentSeparator) && !hasItemSelector && kind == ODataDeltaKind.None) { // Service document: no fragment if (fragment.Length == 0) { detectedPayloadKind = ODataPayloadKind.ServiceDocument; } else if (fragment.Equals(ODataConstants.CollectionPrefix + "(" + ODataConstants.EntityReferenceSegmentName + ")")) { detectedPayloadKind = ODataPayloadKind.EntityReferenceLinks; } else if (fragment.Equals(ODataConstants.EntityReferenceSegmentName)) { detectedPayloadKind = ODataPayloadKind.EntityReferenceLink; } else { var foundNavigationSource = this.model.FindDeclaredNavigationSource(fragment); if (foundNavigationSource != null) { // Resource Set: {schema.entity-container.entity-set} or Singleton: {schema.entity-container.singleton} this.parseResult.NavigationSource = foundNavigationSource; this.parseResult.EdmType = edmTypeResolver.GetElementType(foundNavigationSource); detectedPayloadKind = foundNavigationSource is IEdmSingleton ? ODataPayloadKind.Resource : ODataPayloadKind.ResourceSet; } else { // Property: {schema.type} or Collection({schema.type}) where schema.type is primitive or complex. detectedPayloadKind = this.ResolveType(fragment, clientCustomTypeResolver, throwIfMetadataConflict); Debug.Assert( this.parseResult.EdmType.TypeKind == EdmTypeKind.Primitive || this.parseResult.EdmType.TypeKind == EdmTypeKind.Enum || this.parseResult.EdmType.TypeKind == EdmTypeKind.TypeDefinition || this.parseResult.EdmType.TypeKind == EdmTypeKind.Complex || this.parseResult.EdmType.TypeKind == EdmTypeKind.Collection || this.parseResult.EdmType.TypeKind == EdmTypeKind.Entity || this.parseResult.EdmType.TypeKind == EdmTypeKind.Untyped, "The first context URI segment must be a set or a non-entity type."); } } } else { Debug.Assert(this.parseResult.MetadataDocumentUri.IsAbsoluteUri, "this.parseResult.MetadataDocumentUri.IsAbsoluteUri"); string metadataDocumentStr = UriUtils.UriToString(this.parseResult.MetadataDocumentUri); if (!metadataDocumentStr.EndsWith(ODataConstants.UriMetadataSegment, StringComparison.Ordinal)) { throw new ODataException(ODataErrorStrings.ODataJsonLightContextUriParser_InvalidContextUrl(UriUtils.UriToString(this.parseResult.ContextUri))); } Uri serviceRoot = new Uri(metadataDocumentStr.Substring(0, metadataDocumentStr.Length - ODataConstants.UriMetadataSegment.Length)); ODataUriParser odataUriParser = new ODataUriParser(this.model, serviceRoot, new Uri(serviceRoot, fragment)); ODataPath path; try { path = odataUriParser.ParsePath(); } catch (ODataException) { throw new ODataException(ODataErrorStrings.ODataJsonLightContextUriParser_InvalidContextUrl(UriUtils.UriToString(this.parseResult.ContextUri))); } if (path.Count == 0) { throw new ODataException(ODataErrorStrings.ODataJsonLightContextUriParser_InvalidContextUrl(UriUtils.UriToString(this.parseResult.ContextUri))); } this.parseResult.Path = path; parseResult.NavigationSource = path.NavigationSource(); parseResult.EdmType = path.LastSegment.EdmType; ODataPathSegment lastSegment = path.TrimEndingTypeSegment().LastSegment; if (lastSegment is EntitySetSegment || lastSegment is NavigationPropertySegment) { if (kind != ODataDeltaKind.None) { detectedPayloadKind = ODataPayloadKind.Delta; } else { detectedPayloadKind = hasItemSelector ? ODataPayloadKind.Resource : ODataPayloadKind.ResourceSet; } if (this.parseResult.EdmType is IEdmCollectionType) { var collectionTypeReference = this.parseResult.EdmType.ToTypeReference().AsCollection(); if (collectionTypeReference != null) { this.parseResult.EdmType = collectionTypeReference.ElementType().Definition; } } } else if (lastSegment is SingletonSegment) { detectedPayloadKind = ODataPayloadKind.Resource; } else if (path.IsIndividualProperty()) { isUndeclared = path.IsUndeclared(); detectedPayloadKind = ODataPayloadKind.Property; IEdmComplexType complexType = parseResult.EdmType as IEdmComplexType; if (complexType != null) { detectedPayloadKind = ODataPayloadKind.Resource; } else { IEdmCollectionType collectionType = parseResult.EdmType as IEdmCollectionType; if (collectionType != null) { if (collectionType.ElementType.IsComplex()) { this.parseResult.EdmType = collectionType.ElementType.Definition; detectedPayloadKind = ODataPayloadKind.ResourceSet; } else { detectedPayloadKind = ODataPayloadKind.Collection; } } } } else { throw new ODataException(ODataErrorStrings.ODataJsonLightContextUriParser_InvalidContextUrl(UriUtils.UriToString(this.parseResult.ContextUri))); } } return(detectedPayloadKind); }
private ODataPayloadKind ParseMetadataUriFragment(string fragment, ODataReaderBehavior readerBehavior, ODataVersion version) { // remove any query options like $select that may have been embedded in the fragment. int indexOfQueryOptionSeparator = fragment.IndexOf(JsonLightConstants.MetadataUriQueryOptionSeparator); if (indexOfQueryOptionSeparator > 0) { // Extract the $select query option value from the fragment if it exists string fragmentQueryOptions = fragment.Substring(indexOfQueryOptionSeparator); this.parseResult.SelectQueryOption = ExtractSelectQueryOption(fragmentQueryOptions); fragment = fragment.Substring(0, indexOfQueryOptionSeparator); } string[] parts = fragment.Split(JsonLightConstants.MetadataUriFragmentPartSeparator); int partCount = parts.Length; ODataPayloadKind detectedPayloadKind = ODataPayloadKind.Unsupported; EdmTypeResolver edmTypeResolver = new EdmTypeReaderResolver(this.model, readerBehavior, version); var foundAssociationLinksSegment = fragment.IndexOf(ODataConstants.AssociationLinkSegmentName, StringComparison.Ordinal); if (foundAssociationLinksSegment > -1) { detectedPayloadKind = this.ParseAssociationLinks(edmTypeResolver, partCount, parts, readerBehavior, version); } else { switch (partCount) { case 1: // Service document: no fragment if (fragment.Length == 0) { detectedPayloadKind = ODataPayloadKind.ServiceDocument; break; } if (parts[0].Equals(JsonLightConstants.MetadataUriFragmentNull, StringComparison.OrdinalIgnoreCase)) { detectedPayloadKind = ODataPayloadKind.Property; this.parseResult.IsNullProperty = true; break; } IEdmEntitySet entitySet = this.model.ResolveEntitySet(parts[0]); if (entitySet != null) { // Feed: {schema.entity-container.entity-set} this.parseResult.EntitySet = entitySet; this.parseResult.EdmType = edmTypeResolver.GetElementType(entitySet); detectedPayloadKind = ODataPayloadKind.Feed; break; } // Property: {schema.type} or Collection({schema.type}) where schema.type is primitive or complex. this.parseResult.EdmType = this.ResolveType(parts[0], readerBehavior, version); Debug.Assert( this.parseResult.EdmType.TypeKind == EdmTypeKind.Primitive || this.parseResult.EdmType.TypeKind == EdmTypeKind.Complex || this.parseResult.EdmType.IsNonEntityCollectionType(), "The first metadata URI segment must be a set or a non-entity type."); detectedPayloadKind = this.parseResult.EdmType is IEdmCollectionType ? ODataPayloadKind.Collection : ODataPayloadKind.Property; break; case 2: // Entry: {schema.entity-container.entity-set}/@Element // Feed with type cast: {schema.entity-container.entity-set}/{type-cast} detectedPayloadKind = this.ResolveEntitySet( parts[0], (IEdmEntitySet resolvedEntitySet) => { IEdmEntityType entitySetElementType = edmTypeResolver.GetElementType(resolvedEntitySet); if (string.CompareOrdinal(JsonLightConstants.MetadataUriFragmentItemSelector, parts[1]) == 0) { this.parseResult.EdmType = entitySetElementType; return(ODataPayloadKind.Entry); } else { this.parseResult.EdmType = this.ResolveTypeCast(resolvedEntitySet, parts[1], readerBehavior, version, entitySetElementType); return(ODataPayloadKind.Feed); } }); break; case 3: detectedPayloadKind = this.ResolveEntitySet( parts[0], (IEdmEntitySet resolvedEntitySet) => { IEdmEntityType entitySetElementType = edmTypeResolver.GetElementType(resolvedEntitySet); // Entry with type cast: {schema.entity-container.entity-set}/{type-cast}/@Element this.parseResult.EdmType = this.ResolveTypeCast(resolvedEntitySet, parts[1], readerBehavior, version, entitySetElementType); this.ValidateMetadataUriFragmentItemSelector(parts[2]); return(ODataPayloadKind.Entry); }); break; default: throw new ODataException(ODataErrorStrings.ODataJsonLightMetadataUriParser_FragmentWithInvalidNumberOfParts(UriUtilsCommon.UriToString(this.parseResult.MetadataUri), partCount, 3)); } } return(detectedPayloadKind); }