Module: OpenehrRails::Fhir::TypeMap

Defined in:
lib/openehr_rails/fhir/type_map.rb

Overview

Static mapping from openEHR Reference Model types to HL7 FHIR R5. Drives both StructureDefinition generation (M2) and the REST serializer/deserializer (M3).

Constant Summary collapse

FHIR_BASE_URL = 
'http://hl7.org/fhir/StructureDefinition'
ENTRY_RESOURCES =

openEHR ENTRY type => FHIR R5 resource type.

{
  'OBSERVATION' => 'Observation',
  'EVALUATION' => 'Condition',
  'INSTRUCTION' => 'ServiceRequest',
  'ACTION' => 'Procedure',
  'ADMIN_ENTRY' => 'Encounter'
}.freeze
DATA_VALUE_TYPES =

openEHR data value type => FHIR R5 element type (value suffix / datatype name) used in StructureDefinition element constraints.

{
  'DV_QUANTITY' => 'Quantity',
  'DV_COUNT' => 'integer',
  'DV_PROPORTION' => 'Ratio',
  'DV_ORDINAL' => 'CodeableConcept',
  'DV_TEXT' => 'string',
  'DV_CODED_TEXT' => 'CodeableConcept',
  'DV_IDENTIFIER' => 'Identifier',
  'DV_URI' => 'url',
  'DV_BOOLEAN' => 'boolean',
  'DV_DATE' => 'date',
  'DV_TIME' => 'time',
  'DV_DATE_TIME' => 'dateTime',
  'DV_DURATION' => 'Duration',
  'DV_MULTIMEDIA' => 'Attachment'
}.freeze

Class Method Summary collapse

Class Method Details

.base_definition_for_entry(rm_type) ⇒ Object 



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# File 'lib/openehr_rails/fhir/type_map.rb', line 49

def base_definition_for_entry(rm_type)
  "#{FHIR_BASE_URL}/#{resource_for_entry(rm_type)}"
end

.datatype_for(rm_type) ⇒ Object 



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# File 'lib/openehr_rails/fhir/type_map.rb', line 45

def datatype_for(rm_type)
  DATA_VALUE_TYPES.fetch(rm_type, 'string')
end

.resource_for_entry(rm_type) ⇒ Object 



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# File 'lib/openehr_rails/fhir/type_map.rb', line 41

def resource_for_entry(rm_type)
  ENTRY_RESOURCES.fetch(rm_type, 'Observation')
end

.value_element(resource_type) ⇒ Object

Element on the base resource whose value an openEHR leaf maps to. Single-leaf Observations use value; everything else hangs off a component (handled by the profile/serializer per resource).



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# File 'lib/openehr_rails/fhir/type_map.rb', line 56

def value_element(resource_type)
  resource_type == 'Observation' ? 'value[x]' : 'value[x]'
end