Release 5 Ballot

This page is part of the FHIR Specification (v5.0.0-ballot: R5 Ballot - see ballot notes). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions . Page versions: R4B R4

Example StructureDefinition/valueset-expression (Turtle)

Vocabulary Work GroupMaturity Level: N/AStandards Status: Informative

Raw Turtle (+ also see Turtle/RDF Format Specification)

expression

@prefix fhir: <http://hl7.org/fhir/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .

# - resource -------------------------------------------------------------------

[] a fhir:StructureDefinition;
  fhir:Resource.id [ fhir:value "valueset-expression"];
  fhir:DomainResource.extension [
     fhir:Extension.url [ fhir:value "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg" ];
     fhir:Extension.value [ fhir:value "vocab" ]
  ], [
     fhir:Extension.url [ fhir:value "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm" ];
     fhir:Extension.value [ fhir:value "1" ]
  ];
  fhir:CanonicalResource.url [ fhir:value "http://hl7.org/fhir/StructureDefinition/valueset-expression"];
  fhir:CanonicalResource.identifier [
     fhir:Identifier.system [ fhir:value "urn:ietf:rfc:3986" ];
     fhir:Identifier.value [ fhir:value "urn:oid:2.16.840.1.113883.4.642.5.1211" ]
  ];
  fhir:CanonicalResource.version [ fhir:value "5.0.0-ballot"];
  fhir:CanonicalResource.name [ fhir:value "expression"];
  fhir:CanonicalResource.status [ fhir:value "draft"];
  fhir:CanonicalResource.experimental [ fhir:value "false"];
  fhir:CanonicalResource.date [ fhir:value "2020-12-28T16:55:11+11:00"];
  fhir:CanonicalResource.publisher [ fhir:value "HL7"];
  fhir:CanonicalResource.description [ fhir:value "An expression that provides an alternative definition of the content of the value set (compose). There are two different ways to use this expression extension: If both an expression (this extension) and a compose element is present, the compose is understood to the make the same statement as the expression. If there is no compose, the expression is the only definition of the value set, and the value set can only be processed by a server that understands the expression syntax, the expression is computable."];
  fhir:StructureDefinition.url [ fhir:value "http://hl7.org/fhir/StructureDefinition/valueset-expression"];
  fhir:StructureDefinition.identifier [
     fhir:Identifier.system [ fhir:value "urn:ietf:rfc:3986" ];
     fhir:Identifier.value [ fhir:value "urn:oid:2.16.840.1.113883.4.642.5.1211" ]
  ];
  fhir:StructureDefinition.version [ fhir:value "5.0.0-ballot"];
  fhir:StructureDefinition.name [ fhir:value "expression"];
  fhir:StructureDefinition.status [ fhir:value "draft"];
  fhir:StructureDefinition.experimental [ fhir:value "false"];
  fhir:StructureDefinition.date [ fhir:value "2020-12-28T16:55:11+11:00"];
  fhir:StructureDefinition.publisher [ fhir:value "HL7"];
  fhir:StructureDefinition.description [ fhir:value "An expression that provides an alternative definition of the content of the value set (compose). There are two different ways to use this expression extension: If both an expression (this extension) and a compose element is present, the compose is understood to the make the same statement as the expression. If there is no compose, the expression is the only definition of the value set, and the value set can only be processed by a server that understands the expression syntax, the expression is computable."];
  fhir:StructureDefinition.fhirVersion [ fhir:value "5.0.0"];
  fhir:StructureDefinition.mapping [
     fhir:StructureDefinitionMappingComponent.identity [ fhir:value "rim" ];
     fhir:StructureDefinitionMappingComponent.uri [ fhir:value "http://hl7.org/v3" ];
     fhir:StructureDefinitionMappingComponent.name [ fhir:value "RIM Mapping" ]
  ];
  fhir:StructureDefinition.kind [ fhir:value "complex-type"];
  fhir:StructureDefinition.abstract [ fhir:value "false"];
  fhir:StructureDefinition.context [
     fhir:StructureDefinitionContextComponent.type [ fhir:value "element" ];
     fhir:StructureDefinitionContextComponent.expression [ fhir:value "ValueSet" ]
  ];
  fhir:StructureDefinition.type [ fhir:value "Extension"];
  fhir:StructureDefinition.baseDefinition [ fhir:value "http://hl7.org/fhir/StructureDefinition/Extension"];
  fhir:StructureDefinition.derivation [ fhir:value "constraint"];
  fhir:StructureDefinition.snapshot [
     fhir:StructureDefinitionSnapshotComponent.element [
       fhir:Element.id [ fhir:value "Extension" ];
       fhir:ElementDefinition.path [ fhir:value "Extension" ];
       fhir:ElementDefinition.short [ fhir:value "An alternative computable expression of the value set content" ];
       fhir:ElementDefinition.definition [ fhir:value "An expression that provides an alternative definition of the content of the value set (compose). There are two different ways to use this expression extension: If both an expression (this extension) and a compose element is present, the compose is understood to the make the same statement as the expression. If there is no compose, the expression is the only definition of the value set, and the value set can only be processed by a server that understands the expression syntax, the expression is computable." ];
       fhir:ElementDefinition.comment [ fhir:value "The expression may be a reference or the actual expression, and is expected to be in a computable format. Use the [rules-text extension](extension-valueset-rules-text.html) for a non-computable expression of the value set definition (compose)." ];
       fhir:ElementDefinition.min [ fhir:value "0" ];
       fhir:ElementDefinition.max [ fhir:value "1" ];
       fhir:ElementDefinition.base [
         fhir:ElementDefinitionBaseComponent.path [ fhir:value "Extension" ];
         fhir:ElementDefinitionBaseComponent.min [ fhir:value "0" ];
         fhir:ElementDefinitionBaseComponent.max [ fhir:value "*" ]
       ];
       fhir:ElementDefinition.constraint [
         fhir:ElementDefinitionConstraintComponent.key [ fhir:value "ele-1" ];
         fhir:ElementDefinitionConstraintComponent.severity [ fhir:value "error" ];
         fhir:ElementDefinitionConstraintComponent.human [ fhir:value "All FHIR elements must have a @value or children" ];
         fhir:ElementDefinitionConstraintComponent.expression [ fhir:value "hasValue() or (children().count() > id.count())" ];
         fhir:ElementDefinitionConstraintComponent.xpath [ fhir:value "@value|f:*|h:div" ];
         fhir:ElementDefinitionConstraintComponent.source [ fhir:value "http://hl7.org/fhir/StructureDefinition/Element" ]
       ], [
         fhir:ElementDefinitionConstraintComponent.key [ fhir:value "ext-1" ];
         fhir:ElementDefinitionConstraintComponent.severity [ fhir:value "error" ];
         fhir:ElementDefinitionConstraintComponent.human [ fhir:value "Must have either extensions or value[x], not both" ];
         fhir:ElementDefinitionConstraintComponent.expression [ fhir:value "extension.exists() != value.exists()" ];
         fhir:ElementDefinitionConstraintComponent.xpath [ fhir:value "exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" ];
         fhir:ElementDefinitionConstraintComponent.source [ fhir:value "http://hl7.org/fhir/StructureDefinition/Extension" ]
       ];
       fhir:ElementDefinition.isModifier [ fhir:value "false" ]
     ], [
       fhir:Element.id [ fhir:value "Extension.id" ];
       fhir:ElementDefinition.path [ fhir:value "Extension.id" ];
       fhir:ElementDefinition.representation [ fhir:value "xmlAttr" ];
       fhir:ElementDefinition.short [ fhir:value "Unique id for inter-element referencing" ];
       fhir:ElementDefinition.definition [ fhir:value "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." ];
       fhir:ElementDefinition.min [ fhir:value "0" ];
       fhir:ElementDefinition.max [ fhir:value "1" ];
       fhir:ElementDefinition.base [
         fhir:ElementDefinitionBaseComponent.path [ fhir:value "Element.id" ];
         fhir:ElementDefinitionBaseComponent.min [ fhir:value "0" ];
         fhir:ElementDefinitionBaseComponent.max [ fhir:value "1" ]
       ];
       fhir:ElementDefinition.type [
         fhir:Element.extension [
           fhir:Extension.url [ fhir:value "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type" ];
           fhir:Extension.value [ fhir:value "id" ]
         ];
         fhir:TypeRefComponent.code [ fhir:value "http://hl7.org/fhirpath/System.String" ]
       ];
       fhir:ElementDefinition.isModifier [ fhir:value "false" ];
       fhir:ElementDefinition.isSummary [ fhir:value "false" ];
       fhir:ElementDefinition.mapping [
         fhir:ElementDefinitionMappingComponent.identity [ fhir:value "rim" ];
         fhir:ElementDefinitionMappingComponent.map [ fhir:value "n/a" ]
       ]
     ], [
       fhir:Element.id [ fhir:value "Extension.extension" ];
       fhir:ElementDefinition.path [ fhir:value "Extension.extension" ];
       fhir:ElementDefinition.slicing [
         fhir:ElementDefinitionSlicingComponent.discriminator [
           fhir:ElementDefinitionSlicingDiscriminatorComponent.type [ fhir:value "value" ];
           fhir:ElementDefinitionSlicingDiscriminatorComponent.path [ fhir:value "url" ]
         ];
         fhir:ElementDefinitionSlicingComponent.description [ fhir:value "Extensions are always sliced by (at least) url" ];
         fhir:ElementDefinitionSlicingComponent.rules [ fhir:value "open" ]
       ];
       fhir:ElementDefinition.short [ fhir:value "Extension" ];
       fhir:ElementDefinition.definition [ fhir:value "An Extension" ];
       fhir:ElementDefinition.min [ fhir:value "0" ];
       fhir:ElementDefinition.max [ fhir:value "0" ];
       fhir:ElementDefinition.base [
         fhir:ElementDefinitionBaseComponent.path [ fhir:value "Element.extension" ];
         fhir:ElementDefinitionBaseComponent.min [ fhir:value "0" ];
         fhir:ElementDefinitionBaseComponent.max [ fhir:value "*" ]
       ];
       fhir:ElementDefinition.type [
         fhir:TypeRefComponent.code [ fhir:value "Extension" ]
       ];
       fhir:ElementDefinition.constraint [
         fhir:ElementDefinitionConstraintComponent.key [ fhir:value "ele-1" ];
         fhir:ElementDefinitionConstraintComponent.severity [ fhir:value "error" ];
         fhir:ElementDefinitionConstraintComponent.human [ fhir:value "All FHIR elements must have a @value or children" ];
         fhir:ElementDefinitionConstraintComponent.expression [ fhir:value "hasValue() or (children().count() > id.count())" ];
         fhir:ElementDefinitionConstraintComponent.xpath [ fhir:value "@value|f:*|h:div" ];
         fhir:ElementDefinitionConstraintComponent.source [ fhir:value "http://hl7.org/fhir/StructureDefinition/Element" ]
       ], [
         fhir:ElementDefinitionConstraintComponent.key [ fhir:value "ext-1" ];
         fhir:ElementDefinitionConstraintComponent.severity [ fhir:value "error" ];
         fhir:ElementDefinitionConstraintComponent.human [ fhir:value "Must have either extensions or value[x], not both" ];
         fhir:ElementDefinitionConstraintComponent.expression [ fhir:value "extension.exists() != value.exists()" ];
         fhir:ElementDefinitionConstraintComponent.xpath [ fhir:value "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])" ];
         fhir:ElementDefinitionConstraintComponent.source [ fhir:value "http://hl7.org/fhir/StructureDefinition/Extension" ]
       ];
       fhir:ElementDefinition.isModifier [ fhir:value "false" ];
       fhir:ElementDefinition.isSummary [ fhir:value "false" ]
     ], [
       fhir:Element.id [ fhir:value "Extension.url" ];
       fhir:ElementDefinition.path [ fhir:value "Extension.url" ];
       fhir:ElementDefinition.representation [ fhir:value "xmlAttr" ];
       fhir:ElementDefinition.short [ fhir:value "identifies the meaning of the extension" ];
       fhir:ElementDefinition.definition [ fhir:value "Source of the definition for the extension code - a logical name or a URL." ];
       fhir:ElementDefinition.comment [ fhir:value "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension." ];
       fhir:ElementDefinition.min [ fhir:value "1" ];
       fhir:ElementDefinition.max [ fhir:value "1" ];
       fhir:ElementDefinition.base [
         fhir:ElementDefinitionBaseComponent.path [ fhir:value "Extension.url" ];
         fhir:ElementDefinitionBaseComponent.min [ fhir:value "1" ];
         fhir:ElementDefinitionBaseComponent.max [ fhir:value "1" ]
       ];
       fhir:ElementDefinition.type [
         fhir:Element.extension [
           fhir:Extension.url [ fhir:value "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type" ];
           fhir:Extension.value [ fhir:value "uri" ]
         ];
         fhir:TypeRefComponent.code [ fhir:value "http://hl7.org/fhirpath/System.String" ]
       ];
       fhir:ElementDefinition.fixed [ fhir:value "http://hl7.org/fhir/StructureDefinition/valueset-expression" ];
       fhir:ElementDefinition.isModifier [ fhir:value "false" ];
       fhir:ElementDefinition.isSummary [ fhir:value "false" ];
       fhir:ElementDefinition.mapping [
         fhir:ElementDefinitionMappingComponent.identity [ fhir:value "rim" ];
         fhir:ElementDefinitionMappingComponent.map [ fhir:value "N/A" ]
       ]
     ], [
       fhir:Element.id [ fhir:value "Extension.value[x]" ];
       fhir:ElementDefinition.path [ fhir:value "Extension.value[x]" ];
       fhir:ElementDefinition.short [ fhir:value "Value of extension" ];
       fhir:ElementDefinition.definition [ fhir:value "Value of extension - must be one of a constrained set of the data types (see [Extensibility](extensibility.html) for a list)." ];
       fhir:ElementDefinition.min [ fhir:value "1" ];
       fhir:ElementDefinition.max [ fhir:value "1" ];
       fhir:ElementDefinition.base [
         fhir:ElementDefinitionBaseComponent.path [ fhir:value "Extension.value[x]" ];
         fhir:ElementDefinitionBaseComponent.min [ fhir:value "0" ];
         fhir:ElementDefinitionBaseComponent.max [ fhir:value "1" ]
       ];
       fhir:ElementDefinition.type [
         fhir:TypeRefComponent.code [ fhir:value "Expression" ]
       ];
       fhir:ElementDefinition.constraint [
         fhir:ElementDefinitionConstraintComponent.key [ fhir:value "ele-1" ];
         fhir:ElementDefinitionConstraintComponent.severity [ fhir:value "error" ];
         fhir:ElementDefinitionConstraintComponent.human [ fhir:value "All FHIR elements must have a @value or children" ];
         fhir:ElementDefinitionConstraintComponent.expression [ fhir:value "hasValue() or (children().count() > id.count())" ];
         fhir:ElementDefinitionConstraintComponent.xpath [ fhir:value "@value|f:*|h:div" ];
         fhir:ElementDefinitionConstraintComponent.source [ fhir:value "http://hl7.org/fhir/StructureDefinition/Element" ]
       ];
       fhir:ElementDefinition.isModifier [ fhir:value "false" ];
       fhir:ElementDefinition.isSummary [ fhir:value "false" ];
       fhir:ElementDefinition.mapping [
         fhir:ElementDefinitionMappingComponent.identity [ fhir:value "rim" ];
         fhir:ElementDefinitionMappingComponent.map [ fhir:value "N/A" ]
       ]
     ]
  ];
  fhir:StructureDefinition.differential [
     fhir:StructureDefinitionDifferentialComponent.element [
       fhir:Element.id [ fhir:value "Extension" ];
       fhir:ElementDefinition.path [ fhir:value "Extension" ];
       fhir:ElementDefinition.short [ fhir:value "An alternative computable expression of the value set content" ];
       fhir:ElementDefinition.definition [ fhir:value "An expression that provides an alternative definition of the content of the value set (compose). There are two different ways to use this expression extension: If both an expression (this extension) and a compose element is present, the compose is understood to the make the same statement as the expression. If there is no compose, the expression is the only definition of the value set, and the value set can only be processed by a server that understands the expression syntax, the expression is computable." ];
       fhir:ElementDefinition.comment [ fhir:value "The expression may be a reference or the actual expression, and is expected to be in a computable format. Use the [rules-text extension](extension-valueset-rules-text.html) for a non-computable expression of the value set definition (compose)." ];
       fhir:ElementDefinition.min [ fhir:value "0" ];
       fhir:ElementDefinition.max [ fhir:value "1" ]
     ], [
       fhir:Element.id [ fhir:value "Extension.extension" ];
       fhir:ElementDefinition.path [ fhir:value "Extension.extension" ];
       fhir:ElementDefinition.max [ fhir:value "0" ]
     ], [
       fhir:Element.id [ fhir:value "Extension.url" ];
       fhir:ElementDefinition.path [ fhir:value "Extension.url" ];
       fhir:ElementDefinition.fixed [ fhir:value "http://hl7.org/fhir/StructureDefinition/valueset-expression" ]
     ], [
       fhir:Element.id [ fhir:value "Extension.value[x]" ];
       fhir:ElementDefinition.path [ fhir:value "Extension.value[x]" ];
       fhir:ElementDefinition.min [ fhir:value "1" ];
       fhir:ElementDefinition.type [
         fhir:TypeRefComponent.code [ fhir:value "Expression" ]
       ]
     ]
  ] .

# -------------------------------------------------------------------------------------

Usage note: every effort has been made to ensure that the examples are correct and useful, but they are not a normative part of the specification.