PREFIX : <http://hl7.org/ns/fhir>
PREFIX fhir: <http://hl7.org/ns/fhir#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>

<#Observation> {
  fhir:code .? ;
  fhir:component {
    fhir:code . ;
    fhir:value .
  }*
}


# -- super-classes --
<#Vital>
     @<#ReclinedBP> OR @<#PostureBP> OR @<#BP>
  OR @<#ReclinedPulse> OR @<#PosturePulse> OR @<#Pulse>
<#PostureVital>
     @<#ReclinedBP> OR @<#PostureBP>
  OR @<#ReclinedPulse> OR @<#PosturePulse>
<#ReclinedVital>
     @<#ReclinedBP>
  OR @<#ReclinedPulse>


# -- BP --
<#BP> @<#Observation> AND EXTRA fhir:component {
  $<#BP-TE> (
    fhir:component { fhir:code ["systolic"] } ;
    fhir:component { fhir:code ["diastolic"] }
  )
}

<#PostureBP> @<#Observation> AND {
  &<#BP-TE> ;
  &<#Posture-TE>
}

<#ReclinedBP> @<#Observation> AND {
  &<#BP-TE> ;
  &<#Reclined-TE>
}


# -- Pulse --
<#Pulse> @<#Observation> AND {
  $<#Pulse-TE>
    fhir:code ["pulse"]
}

<#PosturePulse> @<#Observation> AND {
  &<#Pulse-TE> ;
  &<#Posture-TE>  
}

<#ReclinedPulse> @<#Observation> AND {
  &<#Pulse-TE> ;
  &<#Reclined-TE>  
}


# -- postures --
<#Posture> EXTRA fhir:component {
  $<#Posture-TE>
    fhir:component {
      fhir:code ["posture"]
    }
}

<#Reclined> @<#Posture> AND EXTRA fhir:component {
  $<#Reclined-TE>
    fhir:component {
      fhir:code ["posture"] ;
      fhir:value ["reclined"]
    }
}