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Extension: hierarchy

FHIR Infrastructure Work Group   Maturity Level : 1 Informative Use Context : Any

URL for this extension:


http://hl7.org/fhir/StructureDefinition/structuredefinition-hierarchy

Status: draft. Extension maintained by: Health Level Seven, Inc. - [WG Name] WG

For circular references (references back to the same type of resource): whether they are allowed to transitively point back to the same instance (false), or whether the relationship must be a strict one-way hierarchy (true).

Context of Use: Use on Element ID ElementDefinition.type

usage info: insert a list of places where this extension is used

Extension Content

Summary

Name Flags Card. Type Description & Constraints doco
. . extension hierarchy 0..1 boolean URL = http://hl7.org/fhir/StructureDefinition/structuredefinition-hierarchy
hierarchy: For circular references (references back to the same type of resource): whether they are allowed to transitively point back to the same instance (false), or whether the relationship must be a strict one-way hierarchy (true).


Use on Element ID ElementDefinition.type

doco Documentation for this format

Full Structure

Name Flags Card. Type Description & Constraints doco
. . extension 0..1 Extension URL = http://hl7.org/fhir/StructureDefinition/structuredefinition-hierarchy
hierarchy: For circular references (references back to the same type of resource): whether they are allowed to transitively point back to the same instance (false), or whether the relationship must be a strict one-way hierarchy (true).


Use on Element ID ElementDefinition.type
. . . extension I 0..0
. . . url 1..1 uri "http://hl7.org/fhir/StructureDefinition/structuredefinition-hierarchy"
. . valueBoolean . value[x] 0..1 I 1..1 boolean Value of extension

doco Documentation for this format

XML Template

<!-- hierarchy -->doco
<extension xmlns="http://hl7.org/fhir"
     url="http://hl7.org/fhir/StructureDefinition/structuredefinition-hierarchy" >
  <!-- from Element: extension -->
 <

 <valueBoolean value="[boolean]"/><!-- ?? 1..1 Value of extension -->

</extension>

JSON Template

{ // hierarchy
  // from Element: extension
    "extension" : [ //  sliced by value:url  in the specified order, Open ]
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-hierarchy", // R! 
    "

    "valueBoolean" : <boolean> // C? R! Value of extension

  }

Summary

Name Flags Card. Type Description & Constraints doco
. . extension hierarchy 0..1 boolean URL = http://hl7.org/fhir/StructureDefinition/structuredefinition-hierarchy
hierarchy: For circular references (references back to the same type of resource): whether they are allowed to transitively point back to the same instance (false), or whether the relationship must be a strict one-way hierarchy (true).


Use on Element ID ElementDefinition.type

doco Documentation for this format

Full Structure

Name Flags Card. Type Description & Constraints doco
. . extension 0..1 Extension URL = http://hl7.org/fhir/StructureDefinition/structuredefinition-hierarchy
hierarchy: For circular references (references back to the same type of resource): whether they are allowed to transitively point back to the same instance (false), or whether the relationship must be a strict one-way hierarchy (true).


Use on Element ID ElementDefinition.type
. . . extension I 0..0
. . . url 1..1 uri "http://hl7.org/fhir/StructureDefinition/structuredefinition-hierarchy"
. . valueBoolean . value[x] 0..1 I 1..1 boolean Value of extension

doco Documentation for this format

XML Template

<!-- hierarchy -->doco
<extension xmlns="http://hl7.org/fhir"
     url="http://hl7.org/fhir/StructureDefinition/structuredefinition-hierarchy" >
  <!-- from Element: extension -->
 <

 <valueBoolean value="[boolean]"/><!-- ?? 1..1 Value of extension -->

</extension>

JSON Template

{ // hierarchy
  // from Element: extension
    "extension" : [ //  sliced by value:url  in the specified order, Open ]
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-hierarchy", // R! 
    "

    "valueBoolean" : <boolean> // C? R! Value of extension

  }

 

Constraints

  • ele-1 : All FHIR elements must have a @value or children (xpath: @value|f:*|h:div )
  • ext-1 : Must have either extensions or value[x], not both (xpath: exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')]) )
  • ele-1 : On Extension.extension: All FHIR elements must have a @value or children (xpath on Extension.extension: @value|f:*|h:div )
  • ext-1 : On Extension.extension: Must have either extensions or value[x], not both (xpath on Extension.extension: exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")]) )
  • ele-1 : On Extension.value[x]: All FHIR elements must have a @value or children (xpath on Extension.value[x]: @value|f:*|h:div )