public async Task BindModelAsync(ModelBindingContext bindingContext)
{
var actualDiscriminatorValue = await _reader.ReadDiscriminatorAsync(_discriminator.Property, bindingContext.HttpContext);
if (null == actualDiscriminatorValue)
{
throw new CouldNotReadDiscriminatorException();
}
var resolvedType = Fn.CreateResolver(_cases)(actualDiscriminatorValue);
if (null == resolvedType)
{
throw new UnresolvableDiscriminatorCaseException(actualDiscriminatorValue);
}
var metadataForResolvedType = _metadataProvider.GetMetadataForType(resolvedType);
var modelBinderForResolvedType = _factory.CreateBinder(new ModelBinderFactoryContext
{
Metadata = metadataForResolvedType,
BindingInfo = new BindingInfo
{
BindingSource = bindingContext.BindingSource,
BinderModelName = bindingContext.BinderModelName
}
});
if (null == modelBinderForResolvedType)
{
throw new CouldNotResolveBinderForTypeException(resolvedType);
}
bindingContext.ModelMetadata = metadataForResolvedType;
await modelBinderForResolvedType.BindModelAsync(bindingContext);
}