Stream: fhirpath.js
Topic: implementation of in().not()
Tim Harsch (Jun 11 2020 at 02:34):
Hi, I was trying the suggested fhirpath in fhirpath.js. Something like Bundle.entry.resource.where(resourceType in ('Observation' | 'AllergyIntolerance' | 'Procedure')).not() I fed it a bundle of only 'Conditions' and it returns to me an empty collection. I tried a few variations of grouping with parens, but nothing seemed to change the result. Any ideas?
Paul Lynch (Jun 11 2020 at 15:33):
The expression with not() needs to be inside the where(...). Otherwise you are applying not() to the result of the where().
Tim Harsch (Jun 11 2020 at 15:47):
I had thought that too so I tried these as well: Bundle.entry.resource.where((resourceType in ('Observation' | 'AllergyIntolerance' | 'Procedure')).not()) and Bundle.entry.resource.where(resourceType in ('Observation' | 'AllergyIntolerance' | 'Procedure').not()). The latter makes more sense to me, but not sure since all 3 forms return empty collection.
Paul Lynch (Jun 11 2020 at 15:50):
I tried the following with bundle of Observations you shared earlier, and got Observations back:
fhirpath --expression "Bundle.entry.resource.where((resourceType in ('AllergyIntolerance' | 'Procedure')).not())" --resourceFile DanielJohnson.Observations.json
Tim Harsch (Jun 11 2020 at 16:05):
hmmm. and you have the not() wrapping the expression.. I'm working with a different data file that contains only Conditions. let me try switching back to Observations with your expression and then working forward from there.
Tim Harsch (Jun 11 2020 at 19:32):
That worked well in my environment. thank you!
Last updated: Apr 12 2022 at 19:14 UTC
