FHIR Chat · Where conditions · CCDA / FHIR mapping stream

Stream: CCDA / FHIR mapping stream

Topic: Where conditions

Jean Duteau (May 09 2018 at 02:26):

I'm slightly confused by the context that exists for where conditions in mapping rules. I want to express a rule like this: for source as srcSection where code.code = "48765-2" but that doesn't fire. When I trace it in the debugger, it is quite tough to make heads or tails of whether it is supposed to work. I am assuming that the context for my where clause is the initial variable, i.e. source. So this should work when my XML is <section><code code="48765-2" .../>

Grahame Grieve (May 09 2018 at 05:48):

hmm. maybe I could document this better. There's no implicit context for that FHIRPath statement. You need to do where srcSection.code.code

Grahame Grieve (May 09 2018 at 05:48):

you can start with a reference to any of the variables in scope

Jean Duteau (May 09 2018 at 06:42):

hmm, i must still have something wrong:

section: for source.component as component then {
    body: for component.structuredBody as body then {
        component: for body.component as component then {
            allergySection: for component.section as srcSection where srcSection.code.code = "48765-2" make target.section as tgtSection then AllergySection(srcSection, bundle, tgtSection)
            section: for component.section as srcSection where srcSection.code.code != "48765-2" make target.section as tgtSection then ClinicalDocumentSection(srcSection, tgtSection)
        }
    }
}

the allergySection rule is always firing even though only one of my sections has a code with 48765-2.

Last updated: Apr 12 2022 at 19:14 UTC