Hapi FHIR - Appointment with patientId and list of service category name

I am new to HAPI FHIR api, But I am trying to get Appointment resources for a patientID with service category and service type code.

I can find appointments for patient with withIDAndCompartment but not sure how to add the search criteria.

Bundle bundle = fhirClient.search().forResource(Patient.class).withIdAndCompartment(patientId, ResourceType.Appointment.name()).returnBundle(Bunle.class).execute();

List<Appointment> appointments = BundleUtil.toListOfResourcesOfType(fhirClient.getFhirContext(), bundle, Appointment.class);

will return patientId's appointments.

I am not sure how to use TokenClientParam, Appointment.SERVICE_CATEGORY or Appointment.SERVICE_TYPE, to search the appointment type with the input service category or service type code.

Any help will be appreciated

Solution

The fields you want to search have all been added to the Search parameter by HAPI FHIR, you can refer to my code below

    public List<Appointment> findByPatientIdAndServiceTypeAndServiceCategory(
            final String patientId,
            final String serviceType,
            final String serviceCategory,
            final int offset,
            final int limit,
            final Collection<Include> includes) {
        final IQuery<?> theQuery = fhirClient.search().forResource(Appointment.class)
            .totalMode(SearchTotalModeEnum.ACCURATE)
            .offset(offset)
            .count(limit);

        if (StringUtils.isNotBlank(patientId)) {
            theQuery.and(Appointment.PATIENT.hasId(patientId));
        }

        if (StringUtils.isNotBlank(serviceType)) {
            theQuery.and(Appointment.SERVICE_TYPE.exactly().code(serviceType));
        }

        if (StringUtils.isNotBlank(serviceCategory)) {
            theQuery.and(Appointment.SERVICE_CATEGORY.exactly().code(serviceCategory));
        }

        CollectionUtils.emptyIfNull(includes).forEach(theQuery::include);

        theQuery.returnBundle(Bundle.class).execute();
        Bundle result = theQuery.returnBundle(Bundle.class).execute();

        if (result.getEntry().isEmpty()) {
            return Collections.emptyList();
        }

        return result.getEntry()
            .stream()
            .filter(entryComponent -> entryComponent.getResource() instanceof Appointment)
            .map(entry -> (Appointment) entry.getResource())
            .collect(Collectors.toList());
    }