Class: Renalware::Feeds::HL7Message

Inherits:
SimpleDelegator
  • Object
show all
Defined in:
app/models/renalware/feeds/hl7_message.rb

Overview

Responsible for representing an HL7 message. Fields can be queried via chained method calls. For example, accessing the patient identifier field in the PID segment can be accessed by calling:

HL7Message.new(raw_message).patient_identification.internal_id

Defined Under Namespace

Classes: Observation, ObservationRequest, PatientIdentification

Constant Summary collapse

ACTIONS = 
{
  "ADT^A28" => :add_person_information,
  "ADT^A31" => :update_person_information,
  "ADT^A08" => :update_admission,
  "ADT^A01" => :admit_patient,
  "ADT^A02" => :transfer_patient,
  "ADT^A03" => :discharge_patient,
  "ADT^A11" => :cancel_admission,
  "MFN^M02" => :add_consultant, # no
  "ADT^A34" => :merge_patient, # no
  "ADT^A13" => :cancel_discharge,
  "ORU^R01" => :add_pathology_observations
}.freeze

Instance Method Summary collapse

Instance Method Details

#action ⇒ Object 



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# File 'app/models/renalware/feeds/hl7_message.rb', line 227

def action
  ACTIONS.fetch(type, :no_matching_command)
end

#event_type ⇒ Object 



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# File 'app/models/renalware/feeds/hl7_message.rb', line 216

def event_type
  parts = type.split("^")
  parts.length == 2 && parts.last
end

#gp_code ⇒ Object 



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# File 'app/models/renalware/feeds/hl7_message.rb', line 235

def gp_code
  self[:PD1].e4.split("^")[0] if self[:PD1]
end

#header_id ⇒ Object 



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# File 'app/models/renalware/feeds/hl7_message.rb', line 203

def header_id
  self[:MSH].message_control_id
end

#message_type ⇒ Object 



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# File 'app/models/renalware/feeds/hl7_message.rb', line 212

def message_type
  type.split("^").first
end

#observation_requests ⇒ Object

There is a problem here is there are < 1 OBR i.e. self could be an array



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# File 'app/models/renalware/feeds/hl7_message.rb', line 121

def observation_requests
  Array(self[:OBR]).map { |obr| ObservationRequest.new(obr) }
end

#patient_identification ⇒ Object 



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# File 'app/models/renalware/feeds/hl7_message.rb', line 195

def patient_identification
  PatientIdentification.new(self[:PID])
end

#practice_code ⇒ Object 



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# File 'app/models/renalware/feeds/hl7_message.rb', line 231

def practice_code
  self[:PD1].e3.split("^")[2] if self[:PD1]
end

#to_hl7 ⇒ Object

Adding this so it is part of the interface and we can mock an HL7Message in tests



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# File 'app/models/renalware/feeds/hl7_message.rb', line 208

def to_hl7
  super
end

#type ⇒ Object 



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# File 'app/models/renalware/feeds/hl7_message.rb', line 199

def type
  self[:MSH].message_type
end