/// <summary> /// Deserializes the nested property from <paramref name="resourceInfoWrapper"/> into <paramref name="resource"/>. /// </summary> /// <param name="resource">The object into which the nested property should be read.</param> /// <param name="resourceInfoWrapper">The nested resource info.</param> /// <param name="structuredType">The type of the resource.</param> /// <param name="readContext">The deserializer context.</param> public virtual void ApplyNestedProperty(object resource, ODataNestedResourceInfoWrapper resourceInfoWrapper, IEdmStructuredTypeReference structuredType, ODataDeserializerContext readContext) { if (resource == null) { throw new ArgumentNullException(nameof(resource)); } if (resourceInfoWrapper == null) { throw new ArgumentNullException(nameof(resourceInfoWrapper)); } IEdmProperty edmProperty = structuredType.FindProperty(resourceInfoWrapper.NestedResourceInfo.Name); if (edmProperty == null) { if (!structuredType.IsOpen()) { throw new ODataException( Error.Format(SRResources.NestedPropertyNotfound, resourceInfoWrapper.NestedResourceInfo.Name, structuredType.FullName())); } } foreach (ODataItemBase childItem in resourceInfoWrapper.NestedItems) { // it maybe null. if (childItem == null) { if (edmProperty == null) { // for the dynamic, OData.net has a bug. see https://github.com/OData/odata.net/issues/977 ApplyDynamicResourceInNestedProperty(resourceInfoWrapper.NestedResourceInfo.Name, resource, structuredType, null, readContext); } else { ApplyResourceInNestedProperty(edmProperty, resource, null, readContext); } } ODataEntityReferenceLinkBase entityReferenceLink = childItem as ODataEntityReferenceLinkBase; if (entityReferenceLink != null) { // ignore entity reference links. continue; } ODataResourceSetWrapper resourceSetWrapper = childItem as ODataResourceSetWrapper; if (resourceSetWrapper != null) { if (edmProperty == null) { ApplyDynamicResourceSetInNestedProperty(resourceInfoWrapper.NestedResourceInfo.Name, resource, structuredType, resourceSetWrapper, readContext); } else { ApplyResourceSetInNestedProperty(edmProperty, resource, resourceSetWrapper, readContext); } continue; } // It must be resource by now. ODataResourceWrapper resourceWrapper = (ODataResourceWrapper)childItem; if (resourceWrapper != null) { if (edmProperty == null) { ApplyDynamicResourceInNestedProperty(resourceInfoWrapper.NestedResourceInfo.Name, resource, structuredType, resourceWrapper, readContext); } else { ApplyResourceInNestedProperty(edmProperty, resource, resourceWrapper, readContext); } } } }
/// <summary> /// Deserializes the nested property from <paramref name="resourceInfoWrapper"/> into <paramref name="resource"/>. /// </summary> /// <param name="resource">The object into which the nested property should be read.</param> /// <param name="resourceInfoWrapper">The nested resource info.</param> /// <param name="structuredType">The type of the resource.</param> /// <param name="readContext">The deserializer context.</param> public virtual void ApplyNestedProperty(object resource, ODataNestedResourceInfoWrapper resourceInfoWrapper, IEdmStructuredTypeReference structuredType, ODataDeserializerContext readContext) { if (resource == null) { throw Error.ArgumentNull(nameof(resource)); } if (resourceInfoWrapper == null) { throw Error.ArgumentNull(nameof(resourceInfoWrapper)); } IEdmProperty edmProperty = structuredType.FindProperty(resourceInfoWrapper.NestedResourceInfo.Name); if (edmProperty == null) { if (!structuredType.IsOpen()) { throw new ODataException( Error.Format(SRResources.NestedPropertyNotfound, resourceInfoWrapper.NestedResourceInfo.Name, structuredType.FullName())); } } IList <ODataItemWrapper> nestedItems; var referenceLinks = resourceInfoWrapper.NestedItems.OfType <ODataEntityReferenceLinkWrapper>().ToArray(); if (referenceLinks.Length > 0) { // Be noted: // 1) OData v4.0, it's "*****@*****.**", and we get "ODataEntityReferenceLinkWrapper"(s) for that. // 2) OData v4.01, it's {"odata.id" ...}, and we get "ODataResource"(s) for that. // So, in OData v4, if it's a single, NestedItems contains one ODataEntityReferenceLinkWrapper, // if it's a collection, NestedItems contains multiple ODataEntityReferenceLinkWrapper(s) // We can use the following codes to adjust the `ODataEntityReferenceLinkWrapper` to `ODataResourceWrapper`. // In OData v4.01, we will not be here. // Only supports declared property Contract.Assert(edmProperty != null); nestedItems = new List <ODataItemWrapper>(); if (edmProperty.Type.IsCollection()) { IEdmCollectionTypeReference edmCollectionTypeReference = edmProperty.Type.AsCollection(); ODataResourceSetWrapper resourceSetWrapper = CreateResourceSetWrapper(edmCollectionTypeReference, referenceLinks, readContext); nestedItems.Add(resourceSetWrapper); } else { ODataResourceWrapper resourceWrapper = CreateResourceWrapper(edmProperty.Type, referenceLinks[0], readContext); nestedItems.Add(resourceWrapper); } } else { nestedItems = resourceInfoWrapper.NestedItems; } foreach (ODataItemWrapper childItem in nestedItems) { // it maybe null. if (childItem == null) { if (edmProperty == null) { // for the dynamic, OData.net has a bug. see https://github.com/OData/odata.net/issues/977 ApplyDynamicResourceInNestedProperty(resourceInfoWrapper.NestedResourceInfo.Name, resource, structuredType, null, readContext); } else { ApplyResourceInNestedProperty(edmProperty, resource, null, readContext); } } ODataResourceSetWrapper resourceSetWrapper = childItem as ODataResourceSetWrapper; if (resourceSetWrapper != null) { if (edmProperty == null) { ApplyDynamicResourceSetInNestedProperty(resourceInfoWrapper.NestedResourceInfo.Name, resource, structuredType, resourceSetWrapper, readContext); } else { ApplyResourceSetInNestedProperty(edmProperty, resource, resourceSetWrapper, readContext); } continue; } if (childItem is ODataDeltaResourceSetWrapper deltaResourceSetWrapper) { Contract.Assert(edmProperty != null, "nested delta resource cannot be dynamic property!"); ApplyNestedDeltaResourceSet(edmProperty, resource, deltaResourceSetWrapper, readContext); continue; } // It must be resource by now. ODataResourceWrapper resourceWrapper = (ODataResourceWrapper)childItem; if (resourceWrapper != null) { if (edmProperty == null) { ApplyDynamicResourceInNestedProperty(resourceInfoWrapper.NestedResourceInfo.Name, resource, structuredType, resourceWrapper, readContext); } else { ApplyResourceInNestedProperty(edmProperty, resource, resourceWrapper, readContext); } } } }
/// <summary> /// Deserializes the nested property from <paramref name="resourceInfoWrapper"/> into <paramref name="resource"/>. /// </summary> /// <param name="resource">The object into which the nested property should be read.</param> /// <param name="resourceInfoWrapper">The nested resource info.</param> /// <param name="structuredType">The type of the resource.</param> /// <param name="readContext">The deserializer context.</param> public virtual void ApplyNestedProperty(object resource, ODataNestedResourceInfoWrapper resourceInfoWrapper, IEdmStructuredTypeReference structuredType, ODataDeserializerContext readContext) { if (resource == null) { throw new ArgumentNullException(nameof(resource)); } if (resourceInfoWrapper == null) { throw new ArgumentNullException(nameof(resourceInfoWrapper)); } IEdmProperty edmProperty = structuredType.FindProperty(resourceInfoWrapper.NestedResourceInfo.Name); if (edmProperty == null) { if (!structuredType.IsOpen()) { throw new ODataException( Error.Format(SRResources.NestedPropertyNotfound, resourceInfoWrapper.NestedResourceInfo.Name, structuredType.FullName())); } } if (resourceInfoWrapper.NestedResourceSet != null) { // It's nested resource set. // So far, delta resource set is not supported yet. ODataResourceSetWrapper resourceSetWrapper = resourceInfoWrapper.NestedResourceSet as ODataResourceSetWrapper; if (resourceSetWrapper != null) { if (edmProperty == null) { ApplyDynamicResourceSetInNestedProperty(resourceInfoWrapper.NestedResourceInfo.Name, resource, structuredType, resourceSetWrapper, readContext); } else { ApplyResourceSetInNestedProperty(edmProperty, resource, resourceSetWrapper, readContext); } } } else if (resourceInfoWrapper.NestedLinks == null) { // it's a nested resource, TODO, how to get rid of this logic? if (resourceInfoWrapper.NestedResource == null) { if (edmProperty == null) { // for the dynamic, OData.net has a bug. see https://github.com/OData/odata.net/issues/977 ApplyDynamicResourceInNestedProperty(resourceInfoWrapper.NestedResourceInfo.Name, resource, structuredType, null, readContext); } else { ApplyResourceInNestedProperty(edmProperty, resource, null, readContext); } } else { // It must be resource by now. deleted resource is not supported yet. ODataResourceWrapper resourceWrapper = resourceInfoWrapper.NestedResource as ODataResourceWrapper; if (resourceWrapper != null) { if (edmProperty == null) { ApplyDynamicResourceInNestedProperty(resourceInfoWrapper.NestedResourceInfo.Name, resource, structuredType, resourceWrapper, readContext); } else { ApplyResourceInNestedProperty(edmProperty, resource, resourceWrapper, readContext); } } } } else { // it's a nested reference link(s), ignore entity reference links. } }
/// <summary> /// Reads a <see cref="ODataResource"/> or <see cref="ODataResourceSet"/> object. /// </summary> /// <param name="reader">The OData reader to read from.</param> /// <returns>The read resource or resource set.</returns> public static ODataItemBase ReadResourceOrResourceSet(this ODataReader reader) { if (reader == null) { throw Error.ArgumentNull("reader"); } ODataItemBase topLevelItem = null; Stack <ODataItemBase> itemsStack = new Stack <ODataItemBase>(); while (reader.Read()) { switch (reader.State) { case ODataReaderState.ResourceStart: ODataResource resource = (ODataResource)reader.Item; ODataResourceWrapper resourceWrapper = null; if (resource != null) { resourceWrapper = new ODataResourceWrapper(resource); } if (itemsStack.Count == 0) { Contract.Assert(resource != null, "The top-level resource can never be null."); topLevelItem = resourceWrapper; } else { ODataItemBase parentItem = itemsStack.Peek(); ODataResourceSetWrapper parentResourceSet = parentItem as ODataResourceSetWrapper; if (parentResourceSet != null) { parentResourceSet.Resources.Add(resourceWrapper); } else { ODataNestedResourceInfoWrapper parentNestedResource = (ODataNestedResourceInfoWrapper)parentItem; Contract.Assert(parentNestedResource.NestedResourceInfo.IsCollection == false, "Only singleton nested properties can contain resource as their child."); Contract.Assert(parentNestedResource.NestedItems.Count == 0, "Each nested property can contain only one resource as its direct child."); parentNestedResource.NestedItems.Add(resourceWrapper); } } itemsStack.Push(resourceWrapper); break; case ODataReaderState.ResourceEnd: Contract.Assert( itemsStack.Count > 0 && (reader.Item == null || itemsStack.Peek().Item == reader.Item), "The resource which is ending should be on the top of the items stack."); itemsStack.Pop(); break; case ODataReaderState.NestedResourceInfoStart: ODataNestedResourceInfo nestedResourceInfo = (ODataNestedResourceInfo)reader.Item; Contract.Assert(nestedResourceInfo != null, "nested resource info should never be null."); ODataNestedResourceInfoWrapper nestedResourceInfoWrapper = new ODataNestedResourceInfoWrapper(nestedResourceInfo); Contract.Assert(itemsStack.Count > 0, "nested resource info can't appear as top-level item."); { ODataResourceWrapper parentResource = (ODataResourceWrapper)itemsStack.Peek(); parentResource.NestedResourceInfos.Add(nestedResourceInfoWrapper); } itemsStack.Push(nestedResourceInfoWrapper); break; case ODataReaderState.NestedResourceInfoEnd: Contract.Assert(itemsStack.Count > 0 && itemsStack.Peek().Item == reader.Item, "The nested resource info which is ending should be on the top of the items stack."); itemsStack.Pop(); break; case ODataReaderState.ResourceSetStart: ODataResourceSet resourceSet = (ODataResourceSet)reader.Item; Contract.Assert(resourceSet != null, "ResourceSet should never be null."); ODataResourceSetWrapper resourceSetWrapper = new ODataResourceSetWrapper(resourceSet); if (itemsStack.Count > 0) { ODataNestedResourceInfoWrapper parentNestedResourceInfo = (ODataNestedResourceInfoWrapper)itemsStack.Peek(); Contract.Assert(parentNestedResourceInfo != null, "this has to be an inner resource set. inner resource sets always have a nested resource info."); Contract.Assert(parentNestedResourceInfo.NestedResourceInfo.IsCollection == true, "Only collection nested properties can contain resource set as their child."); parentNestedResourceInfo.NestedItems.Add(resourceSetWrapper); } else { topLevelItem = resourceSetWrapper; } itemsStack.Push(resourceSetWrapper); break; case ODataReaderState.ResourceSetEnd: Contract.Assert(itemsStack.Count > 0 && itemsStack.Peek().Item == reader.Item, "The resource set which is ending should be on the top of the items stack."); itemsStack.Pop(); break; case ODataReaderState.EntityReferenceLink: ODataEntityReferenceLink entityReferenceLink = (ODataEntityReferenceLink)reader.Item; Contract.Assert(entityReferenceLink != null, "Entity reference link should never be null."); ODataEntityReferenceLinkBase entityReferenceLinkWrapper = new ODataEntityReferenceLinkBase(entityReferenceLink); Contract.Assert(itemsStack.Count > 0, "Entity reference link should never be reported as top-level item."); { ODataNestedResourceInfoWrapper parentNavigationLink = (ODataNestedResourceInfoWrapper)itemsStack.Peek(); parentNavigationLink.NestedItems.Add(entityReferenceLinkWrapper); } break; default: Contract.Assert(false, "We should never get here, it means the ODataReader reported a wrong state."); break; } } Contract.Assert(reader.State == ODataReaderState.Completed, "We should have consumed all of the input by now."); Contract.Assert(topLevelItem != null, "A top level resource or resource set should have been read by now."); return(topLevelItem); }
/// <summary> /// Deserializes the nested property from <paramref name="resourceInfoWrapper"/> into <paramref name="resource"/>. /// </summary> /// <param name="resource">The object into which the nested property should be read.</param> /// <param name="resourceInfoWrapper">The nested resource info.</param> /// <param name="structuredType">The type of the resource.</param> /// <param name="readContext">The deserializer context.</param> public virtual void ApplyNestedProperty(object resource, ODataNestedResourceInfoWrapper resourceInfoWrapper, IEdmStructuredTypeReference structuredType, ODataDeserializerContext readContext) { if (resource == null) { throw Error.ArgumentNull("resource"); } if (resourceInfoWrapper == null) { throw Error.ArgumentNull("resourceInfoWrapper"); } IEdmProperty edmProperty = structuredType.FindProperty(resourceInfoWrapper.NestedResourceInfo.Name); if (edmProperty == null) { if (!structuredType.IsOpen()) { throw new ODataException("TODO:" /* * Error.Format(SRResources.NestedPropertyNotfound, resourceInfoWrapper.NestedResourceInfo.Name, * structuredType.FullName())*/); } } foreach (ODataItemBase childItem in resourceInfoWrapper.NestedItems) { ODataEntityReferenceLinkBase entityReferenceLink = childItem as ODataEntityReferenceLinkBase; if (entityReferenceLink != null) { // ignore entity reference links. continue; } ODataResourceSetWrapper resourceSetWrapper = childItem as ODataResourceSetWrapper; if (resourceSetWrapper != null) { if (edmProperty == null) { ApplyDynamicResourceSetInNestedProperty(resourceInfoWrapper.NestedResourceInfo.Name, resource, structuredType, resourceSetWrapper, readContext); } else { ApplyResourceSetInNestedProperty(edmProperty, resource, resourceSetWrapper, readContext); } continue; } // It must be resource by now. ODataResourceWrapper resourceWrapper = (ODataResourceWrapper)childItem; if (resourceWrapper != null) { if (edmProperty == null) { ApplyDynamicResourceInNestedProperty(resourceInfoWrapper.NestedResourceInfo.Name, resource, structuredType, resourceWrapper, readContext); } else { ApplyResourceInNestedProperty(edmProperty, resource, resourceWrapper, readContext); } } } }