Research on switching from retrofit to hapi android client

[jingtang10]

This R&D project will aim to evaluate the current communication with FHIR server approach (using retrofit) with the HAPI-FHIR-Android client.

This would involve developing a new version of the reference app to use the hapi-fhir client and then running a series of comparisons between the two.

Outcome will be a determination of which approach we should adopt.

[s-ayush2903]

Okay, so we plan to remove our dependency from retrofit and bring it on hapi. So should we put the poc for impl here after proper research?

[deepankarb]

Here's the android client webpage: https://hapifhir.io/hapi-fhir/docs/android/client.html.

An objective comparison - pros and cons of each - would be helpful.

E.g.

Retrofit	hapi-fhir-android
Commonly used android lib hence easy to develop	Smaller community
Size cost xx mb	Size cost yy mb
Baseline	x% faster/slower per request than baseline
Minimal overhead for supporting FHIR Resources	Works natiely with FHIR Resources
More...	...

[jingtang10]

@deepankarb