public OperationOutcome ValidateBinding(IElementNavigator instance, ElementDefinition definition)
{
var outcome = new OperationOutcome();
if (definition.Binding != null)
{
var binding = definition.Binding;
if (binding.ValueSet != null)
{
var uri = (binding.ValueSet as FhirUri)?.Value;
// == null, so we check whether this could NOT be casted to a FhirUri, thus is a ValueSet reference
if (uri == null)
{
uri = (binding.ValueSet as ResourceReference).Reference;
var codedType = Validator.DetermineType(definition, instance);
if (codedType != null)
{
if (codedType.Value.IsBindeableFhirType())
{
var bindable = instance.ParseBindable(codedType.Value);
if (bindable is Coding)
{
return(ValidateBinding(bindable as Coding, uri, binding.Strength));
}
else
{
return(ValidateBinding(bindable as CodeableConcept, uri, binding.Strength));
}
}
else
{
outcome.AddIssue($"A binding is given ('{uri}'), but the instance data is of type '{codedType.Value}', which is not bindeable.", Issue.CONTENT_TYPE_NOT_BINDEABLE, instance);
}
}
else
{
outcome.AddIssue($"Cannot determine type of data in instance to extract code/system information", Issue.CONTENT_ELEMENT_CANNOT_DETERMINE_TYPE, instance);
}
}
else
{
outcome.AddIssue($"Binding element references a valueset by uri ({uri}), which cannot be used to validate a binding",
Issue.UNSUPPORTED_URI_BINDING_NOT_SUPPORTED, instance);
}
}
else
{
outcome.AddIssue($"Encountered a binding element without a ValueSet reference", Issue.PROFILE_BINDING_WITHOUT_VALUESET, instance);
}
}
return(outcome);
}
