Stream: hapi
Topic: CustomSearchParameter, FHIR path, expression
Marian Hummel (Aug 05 2020 at 15:15):
Hi everyone.
according to https://www.hl7.org/fhir/searchparameter-registry.html Section Appointment the path (expression) for parameter practitioner is Appointment.participant.actor.where(resolve() is Practitioner)
Now i want to build one for relatedPersons as well.
My custom Parameter looks like this
participantsSearchParameter.addBase("Appointment")
participantsSearchParameter.code = "participatingRelatives"
participantsSearchParameter.type = Enumerations.SearchParamType.REFERENCE
participantsSearchParameter.title = "Appointment participating relatives"
participantsSearchParameter.expression = "participant.actor.where(resolve() is RelatedPerson)"
participantsSearchParameter.xpathUsage = SearchParameter.XPathUsageType.NORMAL
participantsSearchParameter.status = Enumerations.PublicationStatus.DRAFT
participantsSearchParameter.addComparator(SearchParameter.SearchComparator.EQ)
participantsSearchParameter.addModifier(SearchParameter.SearchModifierCode.CONTAINS)
This one can be created and used without error message, but it does not work as wanted.
My first intention was to set the expression at the xpath parameter
participantsSearchParameter.xpath = "participant.actor.where(resolve() is RelatedPerson)"
My next idea is to set a reference to parameter actor and use chained search parameters from here
participantsSearchParameter.type = Enumerations.SearchParamType.REFERENCE
participantsSearchParameter.expression = "participant.actor"
Unfortunately my approaches do not work, where am I wrong?
Marian Hummel (Aug 06 2020 at 09:57):
Now i went for
participantsSearchParameter.type = Enumerations.SearchParamType.TOKEN
participantsSearchParameter.xpath = "participant.actor"
participantsSearchParameter.expression = "Appointment.actor"
i can now search for general participants, but i cannot distinguish by type (Patient, Practitioner, RelatedPersons)
Its not ideal, but it would work. Any other ideas?
Last updated: Apr 12 2022 at 19:14 UTC
