Stream: implementers
Topic: Cardinality and empty value attribute
David Moorhouse (Jul 17 2019 at 03:32):
Should an xml node in a resource pass validation - where the Profile specifies a minimum cardinality of 1, and the node has a value attribute that is empty ?
E.g. a snippet from a resource - apart from the min cardinality, no other constraint exists on this node
<?xml version="1.0" encoding="UTF-8"?>
<MedicationDispense xmlns="http://hl7.org/fhir">
<status value=""/>
<!-- other parts of the resource -->
</MedicationDispense>
Richard Townley-O'Neill (Jul 17 2019 at 03:51):
No.
Richard Townley-O'Neill (Jul 17 2019 at 03:52):
MedicationDispense.status has a required binding and "" is not one of the permitted values.
Also codes (and strings) have a minimum length of 1. See http://build.fhir.org/datatypes.html#code
Richard Townley-O'Neill (Jul 17 2019 at 03:55):
I think that all attributes have a minimum length of 1.
David Moorhouse (Jul 17 2019 at 04:23):
Thx for the reply.. I think I've also found the answer by digging further through the FHIR website ...
"Attributes cannot be empty. Either they are absent, or they are present with at least one character of non-whitespace content"
from https://www.hl7.org/fhir/xml.html
Cheers
Last updated: Apr 12 2022 at 19:14 UTC
