package example;
import ca.uhn.fhir.context.FhirContext;
import ca.uhn.fhir.model.dstu2.composite.QuantityDt;
import ca.uhn.fhir.model.dstu2.composite.ResourceReferenceDt;
import ca.uhn.fhir.model.dstu2.resource.Bundle;
import ca.uhn.fhir.model.dstu2.resource.Observation;
import ca.uhn.fhir.model.dstu2.resource.Patient;
import ca.uhn.fhir.model.dstu2.valueset.AdministrativeGenderEnum;
import ca.uhn.fhir.model.dstu2.valueset.BundleTypeEnum;
import ca.uhn.fhir.model.dstu2.valueset.HTTPVerbEnum;
import ca.uhn.fhir.model.dstu2.valueset.ObservationStatusEnum;
import ca.uhn.fhir.model.primitive.IdDt;
import ca.uhn.fhir.rest.client.IGenericClient;
public class ClientTransactionExamples {
public static void main(String[] args) {
conditionalCreate();
}
private static void conditionalCreate() {
//START SNIPPET: conditional
// Create a patient object
Patient patient = new Patient();
patient.addIdentifier()
.setSystem("http://acme.org/mrns")
.setValue("12345");
patient.addName()
.addFamily("Jameson")
.addGiven("J")
.addGiven("Jonah");
patient.setGender(AdministrativeGenderEnum.MALE);
// Give the patient a temporary UUID so that other resources in
// the transaction can refer to it
patient.setId(IdDt.newRandomUuid());
// Create an observation object
Observation observation = new Observation();
observation.setStatus(ObservationStatusEnum.FINAL);
observation
.getCode()
.addCoding()
.setSystem("http://loinc.org")
.setCode("789-8")
.setDisplay("Erythrocytes [#/volume] in Blood by Automated count");
observation.setValue(
new QuantityDt()
.setValue(4.12)
.setUnit("10 trillion/L")
.setSystem("http://unitsofmeasure.org")
.setCode("10*12/L"));
// The observation refers to the patient using the ID, which is already
// set to a temporary UUID
observation.setSubject(new ResourceReferenceDt(patient.getId().getValue()));
// Create a bundle that will be used as a transaction
Bundle bundle = new Bundle();
bundle.setType(BundleTypeEnum.TRANSACTION);
// Add the patient as an entry. This entry is a POST with an
// If-None-Exist header (conditional create) meaning that it
// will only be created if there isn't already a Patient with
// the identifier 12345
bundle.addEntry()
.setFullUrl(patient.getId().getValue())
.setResource(patient)
.getRequest()
.setUrl("Patient")
.setIfNoneExist("identifier=http://acme.org/mrns|12345")
.setMethod(HTTPVerbEnum.POST);
// Add the observation. This entry is a POST with no header
// (normal create) meaning that it will be created even if
// a similar resource already exists.
bundle.addEntry()
.setResource(observation)
.getRequest()
.setUrl("Observation")
.setMethod(HTTPVerbEnum.POST);
// Log the request
FhirContext ctx = FhirContext.forDstu2();
System.out.println(ctx.newXmlParser().setPrettyPrint(true).encodeResourceToString(bundle));
// Create a client and post the transaction to the server
IGenericClient client = ctx.newRestfulGenericClient("http://fhirtest.uhn.ca/baseDstu2");
Bundle resp = client.transaction().withBundle(bundle).execute();
// Log the response
System.out.println(ctx.newXmlParser().setPrettyPrint(true).encodeResourceToString(resp));
//END SNIPPET: conditional
}
}