Stream: cql
Topic: FHIR R4B Support in Java Engine
Corey Sanders (Jan 04 2022 at 21:43):
@Bryn Rhodes / @JP Have you guys started to think about FHIR R4B support in the Java Engine? There are a number of model changes that will necessitate a new model info file for the translator and I think a new FHIRHelpers library maybe. Having those would be useful in preparation for updating my IBM FHIR CQL backend to R4B.
JP (Jan 04 2022 at 21:49):
Yes. We need a couple upstream changes from HAPI due to the way our ModelInfo generation works. Those should be landing in the next few weeks based on the chatter I see in the hapi stream. Also upcoming: R5.
JP (Jan 04 2022 at 21:51):
I expect it'll take another while after that before we're able to do the actual implementation. So, maybe a month or two out before we get it done. You have any specific timeframe in mind?
Corey Sanders (Jan 04 2022 at 22:02):
I wasn't given a specific timeframe for this work. It will probably depend a lot on when the spec becomes GA, but I will check with the server team and see what they think and get back to you. Right now, my stuff is failing during model resolution because there are quite a few code class differences between 4.0.1 and 4.3.0. We've got some stuff in the ModelResolver that smooths out the differences between 4.0.0 and 4.0.1, but this seems like a much larger hack to patch from 4.0.1 to 4.3.0.
Bryn Rhodes (Jan 04 2022 at 22:41):
https://github.com/cqframework/clinical_quality_language/issues/711
Corey Sanders (Jan 05 2022 at 18:58):
I talked with the server team. They expect R4B will be published late January or early February see and the plan is to release a new server version that supports R4B at that time. The IBM FHIR server is inherently single version right now, so I need to have something working around then. That said, I spent some more time debugging why the engine was failing in our R4B branch and I was able to get over the immediate hurdle by patching the ModelResolver. I can run with the 4.0.1 definitions now, so it isn't urgent to have the 4.3.0 models until someone comes wanting to write CQL against the new resources.
Last updated: Apr 12 2022 at 19:14 UTC
