No openEHR application is built in isolation. There are many services running alongside it and the client usually needs to make multiple requests to obtain different data points like demographics, clinical content, terminology etc. Some views may also require executing multiple AQL queries on the cl…

[image] erik.sundvall: In the paper Applying representational state transfer (REST) architecture to archetype-based electronic health record systems | BMC Medical Informatics and Decision Making | Full Text (long time ago now) we showed an example where we embedded AQL inside XQuery inside HTML… …

Interesting proposal! GraphQL was mentioned a several times in the last year in SEC, but we did not had any concrete plans/implementations/requirements on this subject (other than perhaps @ian.mcnicoll being very eager to dive in). So if you have something on this field, I’m pretty sure we’ll have …

I’m 98% sure graphQL is just one possible alternative ITS for AQL. It handles sparse structure querying via paths, i.e. just what AQL and archetypes provide. I think therefore if people want to map AQL and archetypes into graphQL tech, it should be relatively easy.

I’m not sure if adding a layer on top would resolve latency issues in a general case. This should be measured per case, since it depends on the network topology, and based on that, plan a solution. If there is an aggregator somewhere, the aggregator will also have its latencies for executing differ…

A partly related workaround-question regarding user experience during (possibly slow) data retrieval: @Sidharth_Ramesh since you seem to be experienced in Svelte , perhaps you can figure out if it would be easy to make a svelte store of some kind for multiple (possibly paged) AQL responses (retrieve…

[image] pablo: If there is an aggregator somewhere, the aggregator will also have its latencies for executing different services and waiting for results to join stuff. Another point is how the whole system architecture is laid down. Where is the client, where are the servers/services, does the …

On an orthogonal thought, exploring this kind of technology would be a good thesis project for students. Maybe people interested on this that is working at some university could propose such idea to be explored.

[image] erik.sundvall: @Sidharth_Ramesh since you seem to be experienced in Svelte , perhaps you can figure out if it would be easy to make a svelte store of some kind for multiple (possibly paged) AQL responses (retrieved from the server via the already available openEHR AQL REST API). This i…

@Sidharth_Ramesh I actually think it is possible in many openEHR implementations to write a single (nested?) AQL query (e.g. with a list EHR-IDs as an input parameter) to get the latest COVID result for each patient aggregated in a single network call. @bna don’t you have something called VAQM (or…

[image] erik.sundvall: @bna don’t you have something called VAQM (or some similar norwegian vacuum-word-pun almost as good/bad as your “EHRcraft” product air-word-pun…) You have a good memory Erik! Yes we have a system for stored structured queries. We named it VAQM which is an acronym for V…

AQL through GraphQL

Implementation Platform

erik.sundvall (Erik Sundvall) Split this topic 13 November 2021 08:27 19

A post was split to a new topic: CONTRIBUTION builder supporting collaborative (multi user, multi device) editing? GraphQL? Operational Transformation?

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AQL through GraphQL

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