Class: Renalware::Pathology::ObservationRequestsAttributesBuilder

Inherits:
Object
  • Object
show all
Defined in:
app/models/renalware/pathology/observation_requests_attributes_builder.rb

Overview

Responsible for transforming an HL7 message payload into a params hash that can be persisted by ObservationRequest. Note:

  • A message can have multiple observation_requests, each with its own observations.

  • We create any missing *_description or measurement_unit rows - ie if a new OBR ‘ABC’ arrives

  • from the lab and we have not seen it before, we create a corresponding

  • observation_request_description first. Likewise for previously unseen OBX codes we will

  • create a new observation_description in realtime. If a OBC has a unit we have not seen before eg MW (Megawatts!) we create that also. In this way the pathology ‘metadata’ is keep up to date based on what the lab/send.

Note this class could be removed and a Builder class used to create the database models directly - this would remove the extra level of indirection that this class introduces.

Constant Summary collapse

DEFAULT_REQUESTOR_NAME = 
"UNKNOWN"

Instance Method Summary collapse

Constructor Details

#initialize(hl7_message, logger = Delayed::Worker.logger) ⇒ ObservationRequestsAttributesBuilder

hl7_message is an HL7Message (a decorator around an ::HL7::Message)



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# File 'app/models/renalware/pathology/observation_requests_attributes_builder.rb', line 27

def initialize(hl7_message, logger = Delayed::Worker.logger)
  @hl7_message = hl7_message
  @logger = logger
end

Instance Method Details

#parse ⇒ Object

Return an array of observation request attributes (with a nested array of child observation attributes) for each OBR in the HL7 message. The resulting array will be used to create the corresponding database records.



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# File 'app/models/renalware/pathology/observation_requests_attributes_builder.rb', line 35

def parse
  if renalware_patient?
    build_patient_params
  else
    logger.debug("Did not process pathology for #{internal_id}: not a renalware patient")
    nil
  end
end

#renalware_patient? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/renalware/pathology/observation_requests_attributes_builder.rb', line 44

def renalware_patient?
  Patient.exists?(local_patient_id: internal_id)
end