/// <summary>
/// Get Data for ML Task
/// </summary>
/// <returns>a list of patients contain observation data for ML task</returns>
public static async Task <PatientsList> GetData()
{
int count = 0;
bool stop = false;
PatientsList data = new PatientsList();
try
{
var PatientQuery = new SearchParams()
.OrderBy("birthdate")
.LimitTo(LIMIT_ENTRY);
Bundle PatientResult = await Client.SearchAsync <Hl7.Fhir.Model.Patient>(PatientQuery);
// paging to search for all patient until reaching NUMBER_OF_DATA_RECORD value
while (PatientResult != null)
{
if (stop)
{
break;
}
foreach (var Entry in PatientResult.Entry)
{
Hl7.Fhir.Model.Patient fhirPatient = (Hl7.Fhir.Model.Patient)Entry.Resource;
PatientMapper mapper = new PatientMapper();
Models.Patient patient = mapper.Map(fhirPatient);
if (!AppContext.AnalysisData.Contains(patient) && !data.Contains(patient))
{
var CholesterolQuery = new SearchParams()
.Where("patient=" + patient.Id)
.Where("code=2093-3")
.OrderBy("-date")
.LimitTo(1);
// Only GetData for patient that has Cholesterol value
Bundle CholesterolResult = await Client.SearchAsync <Hl7.Fhir.Model.Observation>(CholesterolQuery);
if (CholesterolResult.Entry.Count > 0)
{
data.AddPatient(await GetDataForAnalysis(patient));
count++;
}
}
// Stop if count reachs NUMBER_OF_DATA_RECORD
if (count == NUMBER_OF_DATA_RECORD)
{
stop = true;
break;
}
}
PatientResult = Client.Continue(PatientResult, PageDirection.Next);
}
}
catch (FhirOperationException FhirException)
{
System.Diagnostics.Debug.WriteLine("Fhir error message: " + FhirException.Message);
}
catch (Exception GeneralException)
{
System.Diagnostics.Debug.WriteLine("General error message: " + GeneralException.Message);
}
return(data);
}
