ballerinax/health.fhir.r4.international401 Ballerina library

FHIR R4 Base Module

Sample Usage

This section focuses on samples depicting how to use this package to implement FHIR related integrations

Prerequisites

1. Install Ballerina 2201.6.0 or later

1. Parse JSON FHIR resource to FHIR resource model

Sample below is using the Patient resource in health.fhir.r4.international401 package.

import ballerina/log;
import ballerinax/health.fhir.r4.international401;
import ballerinax/health.fhir.r4.parser;

public function main() {
    json payload = {
        "resourceType": "Patient",
        "id": "1",
        "meta": {
            "profile": [
                "http://hl7.org/fhir/StructureDefinition/Patient"
            ]
        },
        "active":true,
        "name":[
            {
                "use":"official",
                "family":"Chalmers",
                "given":[
                    "Peter",
                    "James"
                ]
            }
        ],
        "gender":"male",
        "birthDate":"1974-12-25",
        "managingOrganization":{
            "reference":"Organization/1"
        }
    };
    do {
        anydata parsedResult = check parser:parse(payload, international401:Patient);
        international401:Patient patientModel = check parsedResult.ensureType();
        log:printInfo(string `Patient name : ${patientModel.name.toString()}`);
    } on fail error parseError {
    	log:printError(string `Error occurred while parsing : ${parseError.message()}`, parseError);
    }
}

2. Creating FHIR Resource models and serializing to JSON wire formats

import ballerina/log;
import ballerina/time;
import ballerinax/health.fhir.r4;
import ballerinax/health.fhir.r4.international401;


public function main() {
    international401:Patient patient = {
        meta: {
            lastUpdated: time:utcToString(time:utcNow()),
            profile: [international401:PROFILE_BASE_PATIENT]
        },
        active: true,
        name: [{
            family: "Doe",
            given: ["Jhon"],
            use: r4:official,
            prefix: ["Mr"]
        }],
        address: [{
            line: ["652 S. Lantern Dr."],
            city: "New York",
            country: "United States",
            postalCode: "10022",
            'type: r4:physical,
            use: r4:home
        }]
    };
    r4:FHIRResourceEntity fhirEntity = new(patient);
    // Serialize FHIR resource record to Json payload
    json|r4:FHIRSerializerError jsonResult = fhirEntity.toJson();
    if jsonResult is json {
        log:printInfo(string `Patient resource JSON payload : ${jsonResult.toString()}`);
    } else {
        log:printError(string `Error occurred while serializing to JSON payload : ${jsonResult.message()}`, jsonResult);
    }
}