FHIR & OpenAPI questions

index.md

FHIR to OpenAPI translation

FHIR specify set of Resources with dataelements with specific datatype as informational model - StructureDefinition resource. So we have to convert StructureDefinition into JSON schema.

Also FHIR has specification of REST API by convention - http://hl7.org/fhir/http.html, and ability to extend API by custom Operations - http://hl7.org/fhir/operationslist.html

So we could generate swagger document from http://hl7.org/fhir/capabilitystatement.html and list of operations.

JSON schema

Convertion of Primitives

FHIR has set of primitive and complex types - http://hl7.org/fhir/datatypes.html

Polymorphic/Union types (Choice in terms of FHIR)

FHIR has the notion of union types (choice).

Current representation in JSON is postfix notation:

http://build.fhir.org/formats.html#choice

Terminology bindings

Operations

Primitive Extensions

References

Operations / REST API

We implemented JSON schema generation in our aidbox fhir server.

We added couple of extensions to json schema to make it work.

Hey @niquola what extensions you have added to the capability statement json schema to work? Can you share it even i am trying to incroporate it in my FHIR server itself

You can see it here - https://github.com/niquola/json-schema.clj/blob/master/test/json_schema/custom_extensions_test.clj
The most important is deferred - https://github.com/niquola/json-schema.clj/blob/master/test/json_schema/custom_extensions_test.clj#L83