text field is lost when the Hapi object is converted to Avro

[chandrashekar-s]

During conversion from HAPI to Avro, the text field is lost in the converted Avro object. This needs to be debugged. In general, all the fields should be copied to Avro object, so that when the Avro object is converted back to Hapi, it is equavalient to the original HAPI object.

[chandrashekar-s]

Original Hapi object

{
  "resourceType": "Patient",
  "id": "example",
  "meta": {
    "profile": [
      "http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient"
    ]
  },
  "text": {
    "status": "generated",
    "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative</b></p><p><b>id</b>: example</p><p><b>meta</b>: </p><p><b>identifier</b>: Medical Record Number: 1032702 (USUAL)</p><p><b>active</b>: true</p><p><b>name</b>: Amy V. Shaw , Amy V. Baxter </p><p><b>telecom</b>: ph: 555-555-5555(HOME), amy.shaw@example.com</p><p><b>gender</b>: female</p><p><b>birthDate</b>: 1987-02-20</p><p><b>address</b>: </p><ul><li>49 Meadow St Mounds OK 74047 US </li><li>183 Mountain View St Mounds OK 74048 US </li></ul></div>"
  }
}  

when the above hapi object is converted to Avro and then reconverted back to HAPI again, the div field under the text is lost.

Reconverted HAPI object from Avro

{
  "resourceType": "Patient",
  "id": "example",
  "meta": {
    "profile": [
      "http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient"
    ]
  },
  "text": {
    "status": "generated"
  }
}  

[bashir2]

I debugged this and the root cause seems to be in the core HAPI code. I have filed this issue to follow-up with that team.

[bashir2]

The filed issue is fixed and a new release has been done; we should probably just update a dependency.

[bashir2]

The filed issue is fixed and a new release has been done; we should probably just update a dependency.

We get the updated artifacts (e.g., ca.uhn.hapi.fhir:org.hl7.fhir.r4) through hapi-fhir-structures-* artifact dependencies. The core issues seems to be fixed on org.hl7.fhir.r4:6.3.19 (and later) according to release notes. The current latest hapi-fhir-structures-* releases (7.4.0) are not caught up to 6.3.19 yet.

[bashir2]

Update: The latest HAPI release includes the fix but when trying to integrate them, I get a new error for xhtml fields. I debugged this and reported the root cause here. Note this prevents us from advancing HAPI version (e.g., #1225) so it is important to be fixed (in the meantime we can exclude xhtml fields if the upstream issue takes too long to be fixed).

[bashir2]

I filed this new bug: hapifhir/org.hl7.fhir.core#1800
Also in #1240 I added a temporary check to skip xhtml fields to be able to advance library versions (until the above issue is fixed and released).