public async SystemTasks.Task <Resource> ValidateConditionalUpdate(FhirRequest request)
{
if (!request.Resource.ResourceType.Equals(ResourceType.DocumentReference))
{
return(OperationOutcomeFactory.CreateInvalidResource("relatesTo"));
}
var document = request.Resource as DocumentReference;
if (document.RelatesTo == null || document.RelatesTo.Count == 0)
{
return(null);
}
var relatesTo = _fhirValidation.GetValidRelatesTo(document.RelatesTo);
if (relatesTo.element == null)
{
return(OperationOutcomeFactory.CreateInvalidResource(relatesTo.issue));
}
//Subject already validated during ValidateCreate
//relatesTo Identifier already validated during ValidateCreate => validPointer
var subjectNhsNumber = _fhirValidation.GetSubjectReferenceId(document.Subject);
var pointerRequest = NrlsPointerHelper.CreateMasterIdentifierSearch(request, relatesTo.element.Target.Identifier, subjectNhsNumber);
var pointers = await _fhirSearch.Find <DocumentReference>(pointerRequest) as Bundle;
if (pointers.Entry.Count != 1)
{
//Cant find related document
return(OperationOutcomeFactory.CreateInvalidResource("relatesTo.target"));
}
//Custodian already validated against incoming ASID during ValidateCreate
var custodianOdsCode = _fhirValidation.GetOrganizationReferenceId(document.Custodian);
var oldDocument = pointers.Entry.First().Resource as DocumentReference;
if (oldDocument.Custodian == null || string.IsNullOrEmpty(oldDocument.Custodian.Reference) || oldDocument.Custodian.Reference != $"{FhirConstants.SystemODS}{custodianOdsCode}")
{
//related document does not have same custodian
return(OperationOutcomeFactory.CreateInvalidResource("relatesTo.target"));
}
if (oldDocument.Status != DocumentReferenceStatus.Current)
{
//Only allowed to transition to superseded from current
return(OperationOutcomeFactory.CreateInvalidResource("relatesTo.code"));
}
return(oldDocument);
}
public async SystemTasks.Task <Resource> ValidateConditionalUpdate(FhirRequest request)
{
if (!request.Resource.ResourceType.Equals(ResourceType.DocumentReference))
{
return(OperationOutcomeFactory.CreateInvalidResource("relatesTo"));
}
var document = request.Resource as DocumentReference;
var relatesTo = _fhirValidation.GetValidRelatesTo(document.RelatesTo);
if (document.RelatesTo.Count == 0)
{
//skip checks, request is just a standard create
return(null);
}
else if (relatesTo.element == null)
{
return(OperationOutcomeFactory.CreateInvalidResource(relatesTo.issue));
}
//Subject already validated during ValidateCreate
//relatesTo Reference/Identifier already validated during ValidateCreate => validPointer
var isRelatesToReference = !string.IsNullOrWhiteSpace(relatesTo.element.Target.Reference);
FhirRequest pointerRequest = null;
DocumentReference oldDocument = null;
if (isRelatesToReference)
{
var pointerId = _fhirValidation.GetReferenceId(relatesTo.element.Target);
pointerRequest = NrlsPointerHelper.CreateReferenceSearch(request, pointerId);
oldDocument = await _fhirSearch.Get <DocumentReference>(pointerRequest);
}
else
{
var subjectNhsNumber = _fhirValidation.GetSubjectReferenceId(document.Subject);
pointerRequest = NrlsPointerHelper.CreateMasterIdentifierSearch(request, relatesTo.element.Target.Identifier, subjectNhsNumber);
var pointers = await _fhirSearch.Find <DocumentReference>(pointerRequest);
//There should only ever be zero or one
oldDocument = pointers.Entry.FirstOrDefault()?.Resource as DocumentReference;
}
if (oldDocument == null)
{
//Cant find related document
return(OperationOutcomeFactory.CreateInvalidResource("relatesTo.target", "Referenced DocumentReference does not exist."));
}
//related document does not have same patient
if (string.IsNullOrEmpty(oldDocument.Subject.Reference) || oldDocument.Subject.Reference != document.Subject.Reference)
{
return(OperationOutcomeFactory.CreateInvalidResource("relatesTo.target", "Resolved DocumentReference is not associated with the same patient."));
}
//Reference type checks
if (isRelatesToReference)
{
//related document does not have masterIdentifier or masterIdentifier does not match new
var docRelatesToIdentifier = document.RelatesTo.First().Target.Identifier;
if (docRelatesToIdentifier != null)
{
var oldDocRelatesToIdentifier = oldDocument.MasterIdentifier;
if (oldDocRelatesToIdentifier == null)
{
return(OperationOutcomeFactory.CreateInvalidResource("relatesTo.target", "Resolved DocumentReference does not have an MasterIdentifier."));
}
if (string.IsNullOrWhiteSpace(docRelatesToIdentifier.System) || string.IsNullOrWhiteSpace(docRelatesToIdentifier.Value) ||
docRelatesToIdentifier.Value != oldDocRelatesToIdentifier.Value || docRelatesToIdentifier.System != oldDocRelatesToIdentifier.System)
{
return(OperationOutcomeFactory.CreateInvalidResource("relatesTo.target", "Resolved DocumentReference does not have a matching MasterIdentifier."));
}
}
}
//Custodian already validated against incoming ASID during ValidateCreate
var custodianOdsCode = _fhirValidation.GetOrganizationReferenceId(document.Custodian);
if (oldDocument.Custodian == null || string.IsNullOrEmpty(oldDocument.Custodian.Reference) || oldDocument.Custodian.Reference != $"{FhirConstants.SystemODS}{custodianOdsCode}")
{
//related document does not have same custodian
return(OperationOutcomeFactory.CreateInvalidResource("relatesTo.target", $"Resolved DocumentReference is not associated with custodian {custodianOdsCode}"));
}
if (oldDocument.Status != DocumentReferenceStatus.Current)
{
//Only allowed to transition to superseded from current
return(OperationOutcomeFactory.CreateInactiveDocumentReference());
}
return(oldDocument);
}