fhir 扩展，它是一个对象数组

Question

我想了解我应该如何实现一个扩展字段，它应该包含 array/list 个 "Objects"。目前规范说扩展名只能包含 "one of these 23":

  "valueInteger" : <integer>
  "valueDecimal" : <decimal>
  "valueDateTime" : "<dateTime>"
  "valueDate" : "<date>"
  "valueInstant" : "<instant>"
  "valueString" : "<string>"
  "valueUri" : "<uri>"
  "valueBoolean" : <boolean>
  "valueCode" : "<code>"
  "valueBase64Binary" : "<base64Binary>"
  "valueCoding" : { Coding }
  "valueCodeableConcept" : { CodeableConcept }
  "valueAttachment" : { Attachment }
  "valueIdentifier" : { Identifier }
  "valueQuantity" : { Quantity }
  "valueRange" : { Range }
  "valuePeriod" : { Period }
  "valueRatio" : { Ratio }
  "valueHumanName" : { HumanName }
  "valueAddress" : { Address }
  "valueContactPoint" : { ContactPoint }
  "valueSchedule" : { Schedule }
  "valueReference" : { Reference }

我需要类似

的东西

{
  "extension": {
     "url": "list-of-things", 
     "valueArray" : [
          {"code":"123","value":"Yellow"},
          {"code":"333","value":"Cab"}
     ]
  }
}

你能告诉我正确的方向吗，谢谢！

Answer 1

扩展值不能是数组 - 处理重复的多态类型太难了。所以重复结构是通过重复扩展元素并声明相同的 URL 来处理的。使用嵌套扩展处理复杂结构。定义为复杂扩展的声明子项的扩展不需要完整的 URL 声明。

您的结构如下所示：


{
  "extension: [{
    "url": "http://example.org/fhir/StructureDefinition/list-of-things",
    "extension" [{
      "url": "code",
      "valueCode": "123"
    },
    {
      "url": "value",
      "valueString": "Yellow"
    }]
  },
  {
    "url": "http://example.org/fhir/StructureDefinition/list-of-things",
    "extension" [{
      "url": "code",
      "valueCode": "333"
    },
    {
      "url": "value",
      "valueString": "Cab"
    }]
  }]
}

fhir 扩展，它是一个对象数组

fhir extension, which is an array of objects

hl7-fhir