private static List <ResourceReference> AllBaseReferences(this Base FhirBase)
{
//Cache
if (ClassPropertyMappingListCache == null)
{
ClassPropertyMappingListCache = new Dictionary <int, IEnumerable <Hl7.Fhir.Introspection.PropertyMapping> >();
}
var ReferenceResultList = new List <ResourceReference>();
if (FhirBase == null)
{
return(ReferenceResultList);
}
//If DomainResource of Extention then drill through all extentions and collect all referances
if (FhirBase is DomainResource DomainResource)
{
ReferenceResultList.AddRange(DomainResource.Extension.AllExtensionListReferences());
}
else if (FhirBase is Extension Extension)
{
ReferenceResultList.AddRange(Extension.AllExtensionReferences());
}
//Cache ClassMappings's PropertyList as likley to have same resource again in the bundle entries
IEnumerable <Hl7.Fhir.Introspection.PropertyMapping> PropertyMappingList = ClassPropertyMappingListCache.SingleOrDefault(x => x.Key == FhirBase.TypeName.GetHashCode()).Value;
if (PropertyMappingList == null)
{
var ClassMapping = Hl7.Fhir.Introspection.ClassMapping.Create(FhirBase.GetType());
PropertyMappingList = ClassMapping.PropertyMappings.Where(t => t.ElementType == typeof(ResourceReference) || t.ElementType.BaseType == typeof(BackboneElement));
ClassPropertyMappingListCache.Add(FhirBase.TypeName.GetHashCode(), PropertyMappingList);
}
foreach (var PropertyItem in PropertyMappingList)
{
if (PropertyItem.ElementType.BaseType == typeof(BackboneElement))
{
if (PropertyItem.IsCollection)
{
var PropertyCollection = PropertyItem.GetValue(FhirBase) as System.Collections.IEnumerable;
foreach (var CollectionItem in PropertyCollection)
{
var BackboneElement = CollectionItem as BackboneElement;
ReferenceResultList.AddRange(BackboneElement.AllBaseReferences());
}
}
else
{
var BackboneElement = PropertyItem.GetValue(FhirBase) as BackboneElement;
ReferenceResultList.AddRange(BackboneElement.AllBaseReferences());
}
}
else
{
if (PropertyItem.GetValue(FhirBase) is ResourceReference rr)
{
ReferenceResultList.Add(rr);
}
}
}
return(ReferenceResultList);
}
private static List <ResourceReference> AllBaseReferences(this Base FhirBase, Dictionary <int, IEnumerable <Hl7.Fhir.Introspection.PropertyMapping> > ClassPropertyMappingListCache)
{
var ReferenceResultList = new List <ResourceReference>();
if (FhirBase == null)
{
return(ReferenceResultList);
}
//If DomainResource or Extension then drill through all extensions and collect all references
if (FhirBase is DomainResource DomainResource)
{
ReferenceResultList.AddRange(DomainResource.Extension.AllExtensionListReferences());
}
else if (FhirBase is Extension Extension)
{
ReferenceResultList.AddRange(Extension.AllExtensionReferences());
}
//Cache ClassMappings's PropertyList as likely to have same resource again in the bundle entries
IEnumerable <Hl7.Fhir.Introspection.PropertyMapping> PropertyMappingList = ClassPropertyMappingListCache.SingleOrDefault(x => x.Key == FhirBase.TypeName.GetHashCode()).Value;
if (PropertyMappingList == null)
{
var ClassMapping = Hl7.Fhir.Introspection.ClassMapping.Create(FhirBase.GetType());
PropertyMappingList = ClassMapping.PropertyMappings.Where(t => t.ElementType == typeof(ResourceReference) || t.ElementType.BaseType == typeof(BackboneElement));
ClassPropertyMappingListCache.Add(FhirBase.TypeName.GetHashCode(), PropertyMappingList);
}
int Count = 0;
foreach (var PropertyItem in PropertyMappingList)
{
if (PropertyItem.ElementType.BaseType == typeof(BackboneElement))
{
if (PropertyItem.IsCollection)
{
try
{
var PropertyCollection = PropertyItem.GetValue(FhirBase) as System.Collections.IEnumerable;
foreach (var CollectionItem in PropertyCollection)
{
var BackboneElement = CollectionItem as BackboneElement;
ReferenceResultList.AddRange(BackboneElement.AllBaseReferences(ClassPropertyMappingListCache));
}
}
catch (System.Exception)
{
//Why Does 'PropertyItem.GetValue(FhirBase)' throw an exception?
//for no we are ignoring the exception as not sure what else to do, could be some
//ResourceReferences in transaction bundles are not updated.
}
}
else
{
try
{
var BackboneElement = PropertyItem.GetValue(FhirBase) as BackboneElement;
ReferenceResultList.AddRange(BackboneElement.AllBaseReferences(ClassPropertyMappingListCache));
}
catch (System.Exception)
{
//Why Does 'PropertyItem.GetValue(FhirBase)' throw an exception?
//for no we are ignoring the exception as not sure what else to do, could be some
//ResourceReferences in transaction bundles are not updated.
}
}
}
else
{
try
{
if (PropertyItem.GetValue(FhirBase) is ResourceReference SingleRef)
{
ReferenceResultList.Add(SingleRef);
}
if (PropertyItem.GetValue(FhirBase) is ICollection <ResourceReference> ResourceReferenceList)
{
foreach (ResourceReference Ref in ResourceReferenceList)
{
ReferenceResultList.Add(Ref);
}
}
}
catch (System.Exception)
{
//Why Does 'PropertyItem.GetValue(FhirBase)' throw an exception?
//for no we are ignoring the exception as not sure what else to do, could be some
//ResourceReferences in translation bundles are not updated.
}
}
Count++;
}
return(ReferenceResultList);
}