FHIR Chat · Cannot resolve resource reference

Stream: dotnet

Topic: Cannot resolve resource reference

Jeff Chen (Feb 18 2020 at 06:13):

Hi all,
I validated Observation resource and its subject reference "http://example.org/fhir/Patient/2a51042a-2bf1-40d0-8ca4-22180b4c964d " to Patient resource ( resource id is 2a51042a-2bf1-40d0-8ca4-22180b4c964d )

But the warning shown below:

[WARNING] Cannot resolve reference http://example.org/fhir/Patient/2a51042a-2bf1-40d0-8ca4-22180b4c964d (at Observation.subject[0])"}

How do I fix it?
Thanks

Kenneth Myhra (Feb 18 2020 at 07:47):

The Patient 2a510(...) at example.org does not exist, set ValidationSettings.ResolveExternalReferences to false

Jeff Chen (Feb 18 2020 at 08:09):

@Kenneth Myhra
if Patient resource is local file(.json), how do i assign to reference of the Observation ?
How does reference look like ?
Thanks

Kenneth Myhra (Feb 18 2020 at 08:56):

Is everything you are trying to validate contained in one Bundle?

Jeff Chen (Feb 18 2020 at 09:14):

Hi @Kenneth Myhra
Kind of confused about "Bundle" ?
In my case, I have two two local resources ("Observation" and "Patient"). Observation has reference to Patient.
If i change reference as web api and respond json (the Patient resource), I don't know why reference can not be resolved.
Is anything i misunderstand?
Thanks for your quick reply

Kenneth Myhra (Feb 18 2020 at 09:31):

The validator cannot pick up local resources from disk, it would need a FHIR REST API if the reference is an external resource. If everything is contained in a Bundle like seen below it can validate it without a FHIR REST API.

{
  "resourceType": "Bundle",
  "id": "bundle-example",
  "meta": {
    "lastUpdated": "2014-08-18T01:43:30Z"
  },
  "type": "searchset",
  "total": 3,
  "link": [
    {
      "relation": "self",
      "url": "https://example.com/base/MedicationRequest?patient=347&_include=MedicationRequest.medication&_count=2"
    },
    {
      "relation": "next",
      "url": "https://example.com/base/MedicationRequest?patient=347&searchId=ff15fd40-ff71-4b48-b366-09c706bed9d0&page=2"
    }
  ],
  "entry": [
    {
      "fullUrl": "https://example.com/base/MedicationRequest/3123",
      "resource": {
        "resourceType": "MedicationRequest",
        "id": "3123",
        "text": {
          "status": "generated",
          "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative with Details</b></p><p><b>id</b>: 3123</p><p><b>status</b>: unknown</p><p><b>intent</b>: order</p><p><b>medication</b>: <a>Medication/example</a></p><p><b>subject</b>: <a>Patient/347</a></p></div>"
        },
        "status": "unknown",
        "intent": "order",
        "medicationReference": {
          "reference": "Medication/example"
        },
        "subject": {
          "reference": "Patient/347"
        }
      },
      "search": {
        "mode": "match",
        "score": 1
      }
    },
    {
      "fullUrl": "https://example.com/base/Medication/example",
      "resource": {
        "resourceType": "Medication",
        "id": "example",
        "text": {
          "status": "generated",
          "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative with Details</b></p><p><b>id</b>: example</p></div>"
        }
      },
      "search": {
        "mode": "include"
      }
    }
  ]
}

Kenneth Myhra (Feb 18 2020 at 09:32):

If you try this example which reference a working FHIR REST API with resources that exists it will validate successfully

{
    "resourceType": "MedicationRequest",
    "id": "3123",
    "status": "unknown",
    "intent": "order",
    "medicationReference": {
        "reference": "http://spark.poplin.no/fhir/Medication/example"
    },
    "subject": {
        "reference": "http://spark.poplin.no/fhir/Patient/example"
    }
}

Jeff Chen (Feb 18 2020 at 10:11):

Good, I gonna try the second way.
But, I want my resources to be private and can't upload to spark.
Can I work on my own server (like spark) with FHIR .NET API for uploading resources ?
Thanks !!

Kenneth Myhra (Feb 18 2020 at 10:26):

Yes, you can clone the repository and run either Spark.Web (.NET Core version) or Spark (.NET Framework version), there are separate branches for each FHIR Version stu3/master and r4/master, there is also a possibility to run the docker images documented in the README.

If you want to set up a version using the NuGet packages there is a Quick start guide here http://firelyteam.github.io/spark/quickstart

Jeff Chen (Feb 19 2020 at 05:51):

UPDATE
I found i don't need spark, and I only set up a FhirClient on my server which gives FHIR format response, json/xml.
So, Observation reference to my api of Patient resource would be alright.

(ಠ‿ಠ)

Last updated: Apr 12 2022 at 19:14 UTC

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FHIR Chat · Cannot resolve resource reference · dotnet