我如何根据扩展值搜索fhir资源？

Question

我有以下形式的一组fhir资源:

<Basic>
    <meta>
      <versionId value="1.0"/>
      <lastUpdated value="2016-11-18T10:26:51Z"/>
      <profile value="http://stelar.org/StructureDefinition/stelar/profile/anthropometry"/>
    </meta>
    <text>
      <status value="generated"/>
    </text>
    <extension url="http://stelar.org/StructureDefinition/stelar/extension/const-sourceIdentifier">
      <cohortName value="TEST"/>
      <datasetName value="SEATONJEAug14A1"/>
      <archetypeName value="Abdo20wks"/>
    </extension>
    <extension url="http://stelar.org/StructureDefinition/stelar/extension/const-resourceTags">
      <valueString value="SEATON"/>
    </extension>
    <extension url="http://stelar.org/StructureDefinition/stelar/extension/anthropometryType">
      <valueCoding value="AnthropometricMeasure"/>
    </extension>
    <extension url="http://stelar.org/StructureDefinition/stelar/extension/subjectNo">
      <valueString value="5375"/>
    </extension>
    <extension url="http://stelar.org/StructureDefinition/stelar/extension/methodOfFollowUp">
      <valueCoding value="FollowUpMethod.ClinicVisit"/>
    </extension>
    <extension url="http://stelar.org/StructureDefinition/stelar/extension/followUp">
      <valueCoding value="FollowUp.SNRecruitment"/>
    </extension>
    <extension url="http://stelar.org/StructureDefinition/stelar/extension/variableLabel">
      <valueString value="Abdominal girth 20 week fetal scan (mm)"/>
    </extension>
    <extension url="http://stelar.org/StructureDefinition/stelar/extension/AIW">
      <valueDouble value="1841.0"/>
    </extension>
    <extension url="http://stelar.org/StructureDefinition/stelar/extension/subject">
      <valueCoding value="Person.StudySubject"/>
    </extension>
    <extension url="http://stelar.org/StructureDefinition/stelar/extension/clinicalType">
      <valueCoding value="ClinicalMeasurement.AnthropometricMeasure"/>
    </extension>
    <extension url="http://stelar.org/StructureDefinition/stelar/extension/dataSource">
      <valueCoding value="DataSource.ClinicalMeasurement"/>
    </extension>
    <extension url="http://stelar.org/StructureDefinition/stelar/extension/dataAnthropometricMeasure"/>
</Basic>

我有许多类似的结构化资源,其中一些常量会发生变化,例如http://stelar.org/StructureDefinition/stelar/extension/dataSource的值.我将如何构建查询来搜索具有"DataSource.ClinicalMeasurement"数据源的资源.

我已经阅读了有关搜索的文档,但似乎没有提到搜索扩展.

作为旁注,我必须将我的所有数据都基于Basic资源类型并使用扩展,原因有点太不相关了.

Answer 1

您可以定义自己的SearchParameter实例,该实例定义如何使用元素的任何元素或组合进行查询 - 扩展或核心.您可以使用服务器的一致性资源来识别您支持的SearchParameters以及这些搜索参数应使用的名称.