/// <inheritdoc />
public override async Task <object> ReadAsync(ODataMessageReader messageReader, Type type, ODataDeserializerContext readContext)
{
if (messageReader == null)
{
throw Error.ArgumentNull(nameof(messageReader));
}
if (readContext == null)
{
throw Error.ArgumentNull(nameof(readContext));
}
// TODO: Need to modify how to get the Edm type for the delta resource set?
IEdmTypeReference edmType = readContext.GetEdmType(type);
Contract.Assert(edmType != null);
IEdmEntityType entityType = edmType.Definition as IEdmEntityType;
EdmDeltaCollectionType edmCollectionType = new EdmDeltaCollectionType(edmType);
edmType = new EdmCollectionTypeReference(edmCollectionType);
// TODO: is it ok to read the top level collection of entity?
if (!(edmType.IsCollection() && edmType.AsCollection().ElementType().IsStructured()))
{
throw Error.Argument("edmType", SRResources.ArgumentMustBeOfType, EdmTypeKind.Complex + " or " + EdmTypeKind.Entity);
}
IEdmNavigationSource navigationSource;
if (readContext.Path == null)
{
throw Error.Argument("readContext", SRResources.ODataPathMissing);
}
navigationSource = readContext.Path.GetNavigationSource();
if (navigationSource == null)
{
throw new SerializationException(SRResources.NavigationSourceMissingDuringDeserialization);
}
ODataReader resourceSetReader = await messageReader.CreateODataDeltaResourceSetReaderAsync(navigationSource as IEdmEntitySet, entityType).ConfigureAwait(false);
object deltaResourceSet = await resourceSetReader.ReadResourceOrResourceSetAsync().ConfigureAwait(false);
return(ReadInline(deltaResourceSet, edmType, readContext));
}
public void GetElementType_ReturnsCorrectly()
{
// 1) null
IEdmTypeReference typeReference = null;
IEdmType actualTypeRef = typeReference.GetElementType();
Assert.Null(actualTypeRef);
// 2) non-collection
typeReference = EdmCoreModel.Instance.GetString(false);
actualTypeRef = typeReference.GetElementType();
Assert.Same(actualTypeRef, typeReference.Definition);
// 3) Collection
typeReference = new EdmCollectionTypeReference(new EdmCollectionType(EdmCoreModel.Instance.GetString(false)));
actualTypeRef = typeReference.GetElementType();
Assert.Same(actualTypeRef, typeReference.AsCollection().ElementType().Definition);
}