{
"description": "A FHIRPath expression or FHIR Query that resolves to a list of candidate answers for the question item or that establishes context for a group item. The user may select from among the candidates to choose answers for the question.",
"_filename": "StructureDefinition-sdc-questionnaire-candidateExpression.json",
"package_name": "hl7.fhir.uv.sdc",
"date": "2014-04-21",
"derivation": "constraint",
"publisher": "Health Level Seven International (Orders and Observations - Structured Data Capture)",
"fhirVersion": "3.5.0",
"name": "Expression for possible answers",
"mapping": [ {
"uri": "http://hl7.org/v3",
"name": "RIM Mapping",
"identity": "rim"
} ],
"abstract": false,
"type": "Extension",
"experimental": null,
"resourceType": "StructureDefinition",
"title": "Candidate Answers Expression",
"package_version": "2.5.0",
"snapshot": {
"element": [ {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"source": "Element",
"severity": "error",
"expression": "hasValue() or (children().count() > id.count())"
}, {
"key": "ext-1",
"human": "Must have either extensions or value[x], not both",
"xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])",
"source": "Extension",
"severity": "error",
"expression": "extension.exists() != value.exists()"
} ],
"path": "Extension",
"min": 0,
"definition": "A FHIRPath expression or FHIR Query that resolves to a list of candidate answers for the question item or that establishes context for a group item. The user may select from among the candidates to choose answers for the question.",
"isModifier": false,
"short": "Expression for possible answers",
"max": "1",
"id": "Extension",
"condition": [ "ele-1" ],
"comment": "The results of the expression must correspond to the item type of the question the element appears on or must correspond to a resource, backbone element or complex data type for a group item. Resources are considered a match for the Reference item type. Quantity can be a match for decimal and integer items so long as a questionnaire-unit extension is present.",
"base": {
"max": "*",
"min": 0,
"path": "Extension"
}
}, {
"path": "Extension.id",
"min": 0,
"definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
"isModifier": false,
"short": "xml:id (or equivalent in JSON)",
"mapping": [ {
"map": "n/a",
"identity": "rim"
} ],
"type": [ {
"code": "string"
} ],
"representation": [ "xmlAttr" ],
"max": "1",
"id": "Extension.id",
"base": {
"max": "1",
"min": 0,
"path": "Element.id"
},
"isSummary": false
}, {
"path": "Extension.extension",
"min": 0,
"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.",
"isModifier": false,
"short": "Additional content defined by implementations",
"mapping": [ {
"map": "n/a",
"identity": "rim"
} ],
"slicing": {
"rules": "open",
"description": "Extensions are always sliced by (at least) url",
"discriminator": [ {
"path": "url",
"type": "value"
} ]
},
"type": [ {
"code": "Extension"
} ],
"alias": [ "extensions", "user content" ],
"max": "*",
"id": "Extension.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.",
"base": {
"max": "*",
"min": 0,
"path": "Element.extension"
},
"isSummary": false
}, {
"path": "Extension.url",
"min": 1,
"definition": "Source of the definition for the extension code - a logical name or a URL.",
"isModifier": false,
"short": "identifies the meaning of the extension",
"fixedUri": "http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-candidateExpression",
"mapping": [ {
"map": "N/A",
"identity": "rim"
} ],
"representation": [ "xmlAttr" ],
"max": "1",
"id": "Extension.url",
"comment": "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.",
"base": {
"max": "1",
"min": 1,
"path": "Extension.url"
},
"isSummary": false
}, {
"path": "Extension.valueExpression",
"min": 0,
"definition": "Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).",
"isModifier": false,
"short": "Value of extension",
"mapping": [ {
"map": "N/A",
"identity": "rim"
} ],
"type": [ {
"code": "Expression"
} ],
"max": "1",
"id": "Extension.valueExpression",
"base": {
"max": "1",
"min": 0,
"path": "Extension.value[x]"
},
"isSummary": false
} ]
},
"status": "draft",
"id": "2fc7427c-1eb9-49a2-9302-a6f91c326212",
"kind": "complex-type",
"url": "http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-candidateExpression",
"context": [ {
"type": "element",
"expression": "Questionnaire.item"
}, {
"type": "element",
"expression": "Questionnaire.item.item"
} ],
"version": "2.5.0",
"differential": {
"element": [ {
"id": "Extension",
"max": "1",
"min": 0,
"path": "Extension",
"short": "Expression for possible answers",
"comment": "The results of the expression must correspond to the item type of the question the element appears on or must correspond to a resource, backbone element or complex data type for a group item. Resources are considered a match for the Reference item type. Quantity can be a match for decimal and integer items so long as a questionnaire-unit extension is present.",
"definition": "A FHIRPath expression or FHIR Query that resolves to a list of candidate answers for the question item or that establishes context for a group item. The user may select from among the candidates to choose answers for the question.",
"isModifier": false
}, {
"id": "Extension.url",
"path": "Extension.url",
"fixedUri": "http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-candidateExpression"
}, {
"id": "Extension.valueExpression",
"path": "Extension.valueExpression",
"type": [ {
"code": "Expression"
} ]
} ]
},
"contact": [ {
"telecom": [ {
"value": "http://wiki.siframework.org/Structured+Data+Capture+Initiative",
"system": "url"
} ]
} ],
"baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension"
}