Stream: implementers
Topic: Validation on datatype invariants
Kailash (Aug 30 2021 at 13:09):
Hello, I wanted to add invariant over Quantity datatype to say system should be(warning) an UCUM system(http://unitsofmeasure.org) and created a datatype profile over Quantity, now this profile referenced at MedicationStatement.dosage.doseAndRate.dose[x] for quantity type.
While validating the medication statement instance(updated HL7 medication statement sample to mentioned quantity system other then UCUM ) against medication statement profile using latest Java validator which got success instead of expected warning.
Quantity.system invariant -
<severity value="warning"/>
<expression value="system.exists() implies system='http://unitsofmeasure.org'"/>
instance snippet - assume all other need data are there including meta {
"resourceType": "MedicationStatement",
"dosage": [
{
"doseAndRate": [
{
"doseQuantity": {
"value": 1,
"unit" : "Dosage",
"system": "http://snomed.info/sct",
"code": "260911001"
}
}
]
}
]
}
I think validator should give a warning as per invariant on datatype, but it is not giving any warning.
Let me know if I am missing anything here, thanks
Lloyd McKenzie (Aug 30 2021 at 16:04):
Can you post both your data type and MedicationStatement profile here as well as your instance and how you're invoking the validator?
Kailash (Aug 31 2021 at 06:57):
@Lloyd McKenzie ,, thanks for reply, please find the attachment. DataTypeInvariantValidation.zip
Lloyd McKenzie (Aug 31 2021 at 13:46):
The location of your invariant is incorrect. It's being declared on 'system', but the invariant is <expression value="system.exists() implies system='http://unitsofmeasure.org'" />
That means "if system.system exists, then system.system needs to be http://unitsofmeasure.org". Move your extension up to be declared on Quantity and try again
Kailash (Sep 01 2021 at 09:22):
Thanks @Lloyd McKenzie for finding, on first hand testing its working!!
Last updated: Apr 12 2022 at 19:14 UTC
