FHIR IG Statistics: StructureDefinition/JavascriptExpression
Resources that use this resource
Resources that this resource uses
Narrative
Note: links and images are rebased to the (stated) source
Source
{
"resourceType": "StructureDefinition",
"id": "JavascriptExpression",
"text": {
"status": "extensions",
"div": "<!-- snip (see above) -->"
},
"extension": [
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
"valueCode": "fhir"
}
],
"url": "http://hl7.org/fhir/uv/javascript/StructureDefinition/JavascriptExpression",
"version": "0.1.0",
"name": "JavascriptExpression",
"status": "draft",
"experimental": false,
"date": "2025-05-12T10:18:26+00:00",
"publisher": "Hl7 International/ FHIR infrastructure",
"contact": [
{
"name": "Hl7 International/ FHIR infrastructure",
"telecom": [
{
"system": "url",
"value": "http://www.hl7.org/Special/committees/"
}
]
}
],
"fhirVersion": "4.0.1",
"mapping": [
{
"identity": "rim",
"uri": "http://hl7.org/v3",
"name": "RIM Mapping"
}
],
"kind": "complex-type",
"abstract": false,
"type": "Expression",
"baseDefinition": "http://hl7.org/fhir/uv/javascript/StructureDefinition/JavascriptEnabledExpression",
"derivation": "constraint",
"snapshot": {
"extension": [
{
"url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version",
"valueString": "0.1.0"
}
],
"element": [
{
"id": "Expression",
"path": "Expression",
"short": "An expression that can be used to generate a value",
"definition": "A expression that is evaluated in a specified context and returns a value. The context of use of the expression must specify the context in which the expression is evaluated, and how the result of the expression is used.",
"min": 0,
"max": "*",
"base": {
"path": "Expression",
"min": 0,
"max": "*"
},
"condition": [
"ele-1"
],
"constraint": [
{
"key": "ele-1",
"severity": "error",
"human": "All FHIR elements must have a @value or children",
"expression": "hasValue() or (children().count() > id.count())",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element"
},
{
"key": "exp-1",
"severity": "error",
"human": "An expression or a reference must be provided",
"expression": "expression.exists() or reference.exists()",
"xpath": "exists(f:expression) or exists(f:reference)",
"source": "http://hl7.org/fhir/StructureDefinition/Expression"
}
],
"isModifier": false,
"mapping": [
{
"identity": "rim",
"map": "n/a"
}
]
},
{
"id": "Expression.id",
"path": "Expression.id",
"representation": [
"xmlAttr"
],
"short": "Unique id for inter-element referencing",
"definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
"min": 0,
"max": "1",
"base": {
"path": "Element.id",
"min": 0,
"max": "1"
},
"type": [
{
"extension": [
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
"valueUrl": "string"
}
],
"code": "http://hl7.org/fhirpath/System.String"
}
],
"isModifier": false,
"isSummary": false,
"mapping": [
{
"identity": "rim",
"map": "n/a"
}
]
},
{
"id": "Expression.extension",
"path": "Expression.extension",
"slicing": {
"discriminator": [
{
"type": "value",
"path": "url"
}
],
"description": "Extensions are always sliced by (at least) url",
"rules": "open"
},
"short": "Additional content defined by implementations",
"definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
"comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
"alias": [
"extensions",
"user content"
],
"min": 0,
"max": "*",
"base": {
"path": "Element.extension",
"min": 0,
"max": "*"
},
"type": [
{
"code": "Extension"
}
],
"constraint": [
{
"key": "ele-1",
"severity": "error",
"human": "All FHIR elements must have a @value or children",
"expression": "hasValue() or (children().count() > id.count())",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element"
},
{
"key": "ext-1",
"severity": "error",
"human": "Must have either extensions or value[x], not both",
"expression": "extension.exists() != value.exists()",
"xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
"source": "http://hl7.org/fhir/StructureDefinition/Extension"
}
],
"isModifier": false,
"isSummary": false,
"mapping": [
{
"identity": "rim",
"map": "n/a"
}
]
},
{
"id": "Expression.description",
"path": "Expression.description",
"short": "Natural language description of the condition",
"definition": "A brief, natural language description of the condition that effectively communicates the intended semantics.",
"min": 0,
"max": "1",
"base": {
"path": "Expression.description",
"min": 0,
"max": "1"
},
"type": [
{
"code": "string"
}
],
"constraint": [
{
"key": "ele-1",
"severity": "error",
"human": "All FHIR elements must have a @value or children",
"expression": "hasValue() or (children().count() > id.count())",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element"
}
],
"isModifier": false,
"isSummary": true
},
{
"id": "Expression.name",
"path": "Expression.name",
"short": "Short name assigned to expression for reuse",
"definition": "A short name assigned to the expression to allow for multiple reuse of the expression in the context where it is defined.",
"min": 0,
"max": "1",
"base": {
"path": "Expression.name",
"min": 0,
"max": "1"
},
"type": [
{
"code": "id"
}
],
"constraint": [
{
"key": "ele-1",
"severity": "error",
"human": "All FHIR elements must have a @value or children",
"expression": "hasValue() or (children().count() > id.count())",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element"
}
],
"isModifier": false,
"isSummary": true
},
{
"id": "Expression.language",
"path": "Expression.language",
"short": "text/cql | text/fhirpath | application/x-fhir-query | etc.",
"definition": "The media type of the language for the expression.",
"min": 1,
"max": "1",
"base": {
"path": "Expression.language",
"min": 1,
"max": "1"
},
"type": [
{
"code": "code"
}
],
"patternCode": "javascript",
"constraint": [
{
"key": "ele-1",
"severity": "error",
"human": "All FHIR elements must have a @value or children",
"expression": "hasValue() or (children().count() > id.count())",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element"
}
],
"isModifier": false,
"isSummary": true,
"binding": {
"strength": "required",
"valueSet": "http://hl7.org/fhir/uv/javascript/ValueSet/JavascriptExpressionLanguageValueset"
}
},
{
"id": "Expression.expression",
"path": "Expression.expression",
"short": "Expression in specified language",
"definition": "An expression in the specified language that returns a value.",
"min": 0,
"max": "1",
"base": {
"path": "Expression.expression",
"min": 0,
"max": "1"
},
"type": [
{
"code": "string"
}
],
"constraint": [
{
"key": "ele-1",
"severity": "error",
"human": "All FHIR elements must have a @value or children",
"expression": "hasValue() or (children().count() > id.count())",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element"
}
],
"isModifier": false,
"isSummary": true
},
{
"id": "Expression.reference",
"path": "Expression.reference",
"short": "Where the expression is found",
"definition": "A URI that defines where the expression is found.",
"comment": "If both a reference and an expression is found, the reference SHALL point to the same expression.",
"min": 0,
"max": "1",
"base": {
"path": "Expression.reference",
"min": 0,
"max": "1"
},
"type": [
{
"code": "uri"
}
],
"constraint": [
{
"key": "ele-1",
"severity": "error",
"human": "All FHIR elements must have a @value or children",
"expression": "hasValue() or (children().count() > id.count())",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element"
}
],
"isModifier": false,
"isSummary": true
}
]
},
"differential": {
"element": [
{
"id": "Expression",
"path": "Expression"
},
{
"id": "Expression.language",
"path": "Expression.language",
"patternCode": "javascript"
}
]
}
}
Expression 
FHIR