private JObject ProcessStructObject(JToken structItem, FhirParquetSchemaNode schemaNode)
{
if (structItem is not JObject fhirJObject)
{
_logger.LogError($"Current FHIR object is not a valid JObject: {schemaNode.GetNodePath()}.");
throw new ParquetDataProcessorException($"Current FHIR object is not a valid JObject: {schemaNode.GetNodePath()}.");
}
JObject processedObject = new JObject();
foreach (var subItem in fhirJObject)
{
JToken subObject = subItem.Value;
// Process choice type FHIR resource.
if (schemaNode.ContainsChoiceDataType(subItem.Key))
{
var choiceTypeName = schemaNode.ChoiceTypeNodes[subItem.Key].Item1;
var choiceTypeDataType = schemaNode.ChoiceTypeNodes[subItem.Key].Item2;
if (!schemaNode.SubNodes[choiceTypeName].SubNodes.ContainsKey(choiceTypeDataType))
{
_logger.LogError($"Data type \"{choiceTypeDataType}\" cannot be found in choice type property, {schemaNode.GetNodePath()}.");
throw new ParquetDataProcessorException($"Data type \"{choiceTypeDataType}\" cannot be found in choice type property, {schemaNode.GetNodePath()}.");
}
var dataTypeNode = schemaNode.SubNodes[choiceTypeName].SubNodes[choiceTypeDataType];
processedObject.Add(choiceTypeName, ProcessChoiceTypeObject(subObject, dataTypeNode));
}
else
{
// Ignore FHIR data node if it doesn't exist in schema.
if (schemaNode.SubNodes == null || !schemaNode.SubNodes.ContainsKey(subItem.Key))
{
continue;
}
FhirParquetSchemaNode subNode = schemaNode.SubNodes[subItem.Key];
if (subNode.IsRepeated)
{
// Process array FHIR resource.
processedObject.Add(subNode.Name, ProcessArrayObject(subObject, subNode));
}
else if (subNode.IsLeaf)
{
// Process leaf FHIR resource.
processedObject.Add(subNode.Name, ProcessLeafObject(subObject, subNode));
}
else
{
// Process struct FHIR resource.
processedObject.Add(subNode.Name, ProcessStructObject(subObject, subNode));
}
}
}
return(processedObject);
}
private JArray ProcessArrayObject(JToken arrayItem, FhirParquetSchemaNode schemaNode)
{
if (arrayItem is not JArray fhirArrayObject)
{
_logger.LogError($"Current FHIR object is not a valid JArray: {schemaNode.GetNodePath()}.");
throw new ParquetDataProcessorException($"Current FHIR object is not a valid JArray: {schemaNode.GetNodePath()}.");
}
JArray arrayObject = new JArray();
foreach (var item in fhirArrayObject)
{
if (schemaNode.IsLeaf)
{
arrayObject.Add(ProcessLeafObject(item, schemaNode));
}
else
{
arrayObject.Add(ProcessStructObject(item, schemaNode));
}
}
return(arrayObject);
}
private JValue ProcessLeafObject(JToken fhirObject, FhirParquetSchemaNode schemaNode)
{
if (schemaNode.Type == FhirParquetSchemaConstants.JsonStringType)
{
return(new JValue(fhirObject.ToString(Formatting.None)));
}
if (fhirObject is not JValue fhirLeafObject)
{
_logger.LogError($"Invalid data: complex object found in leaf schema node {schemaNode.GetNodePath()}.");
throw new ParquetDataProcessorException($"Invalid data: complex object found in leaf schema node {schemaNode.GetNodePath()}.");
}
return(fhirLeafObject);
}
