public void Create(PatientC patient)
{
var pt = _mapper.Map(patient);
Patient p = pt.Item1;
PatientDetail pd = pt.Item2;
using (var _db = new PatientDBEntities())
{
_db.PatientDetails.Add(pd);
_db.SaveChanges();
p.ID = pd.ID;
_db.Patients.Add(p);
_db.SaveChanges();
}
}
/// <summary>
/// Get all patients of a given Practitioner
/// </summary>
/// <param name="practitionerId"></param>
/// <returns> a list of Patients </returns>
public static async Task <List <Models.Patient> > GetPatientsOfPractitioner(string practitionerId)
{
List <Models.Patient> patientList = new List <Models.Patient>();
SortedSet <string> patientIdList = new SortedSet <string>();
try
{
var encounterQuery = new SearchParams()
.Where("participant.identifier=http://hl7.org/fhir/sid/us-npi|" + practitionerId)
.Include("Encounter.participant.individual")
.Include("Encounter.patient")
.LimitTo(LIMIT_ENTRY);
Bundle Result = await Client.SearchAsync <Encounter>(encounterQuery);
// implement paging for HAPI FHIR API Bundle
while (Result != null)
{
foreach (var Entry in Result.Entry)
{
// Get patient id and add to a list
Encounter encounter = (Encounter)Entry.Resource;
string patientRef = encounter.Subject.Reference;
string patientId = patientRef.Split('/')[1];
patientIdList.Add(patientId);
}
Result = Client.Continue(Result, PageDirection.Next);
}
// fetch patient data from the list of patient ids
foreach (var patientId in patientIdList)
{
Bundle PatientResult = await Client.SearchByIdAsync <Hl7.Fhir.Model.Patient>(patientId);
if (PatientResult.Entry.Count > 0)
{
// Map the FHIR Patient object to App's Patient object
Hl7.Fhir.Model.Patient fhirPatient = (Hl7.Fhir.Model.Patient)PatientResult.Entry[0].Resource;
PatientMapper mapper = new PatientMapper();
Models.Patient patient = mapper.Map(fhirPatient);
patientList.Add(patient);
}
}
}
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(patientList);
}
/// <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);
}
