FHIR Chat · How to Invoke Operation using HAPI Java Library · hapi

Stream: hapi

Topic: How to Invoke Operation using HAPI Java Library

view this post on Zulip Jake Zhou (Jan 11 2022 at 16:02):

Hello,
We're trying to use the Java HAPI FHIR Library for one of our projects and we're having some questions on how to create a request to an endpoint with an operation.
The library we're using is hapi-fhir-base-4.2.0, and the IGenericClient.java class we're using is at package ca.uhn.fhir.rest.client.api
The docs for using operations on this library is at: https://hapifhir.io/hapi-fhir/docs/client/generic_client.html#extended-operations, but there are no examples of using this against a type instead of an instance
Here is the code we have that's generating a 400 code
Screen-Shot-2022-01-06-at-10.43.41-AM.png
Screen-Shot-2022-01-11-at-11.02.26-AM.png

view this post on Zulip Jake Zhou (Jan 11 2022 at 16:03):

We're using this code for the Patient Request for Correction track with @Virginia Lorenzi and @David Hay

view this post on Zulip Jake Zhou (Jan 11 2022 at 16:31):

Here is the latest code we have trying to send the request to the testing server:

        var inParams = new Parameters();
        inParams.addParameter()
                .setName("CorrectionRequest")
                .setResource(bundle);

var remoteClient = FhirR4Config.getFhirContext().newRestfulGenericClient(endpoint.getAddress());
var result = remoteClient
.operation()
.onType(Communication.class)
.named("$correctionrequest")
.withParameters(inParams)
.execute();

view this post on Zulip Jake Zhou (Jan 11 2022 at 20:24):

We were able to resolve the issue. I've attached the final code below. We discovered some detail about processing the Parameter on the server side

var inParams = new Parameters();
inParams.addParameter()
.setName("CorrectionRequest")
.setResource(bundle);

        var remoteClient = FhirR4Config.getFhirContext().newRestfulGenericClient(endpoint.getAddress());
        var result = remoteClient
                .operation()
                .onType(Communication.class)
                .named("$correctionrequest")
                .withParameters(inParams)
                .execute();

Last updated: Apr 12 2022 at 19:14 UTC


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