Id.profile.xml

StructureDefinition for id

<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="id"/> 
  <text> 
    <status value="generated"/> 
    <div xmlns="http://www.w3.org/1999/xhtml">to do</div> 
  </text> 
  <url value="http://hl7.org/fhir/StructureDefinition/id"/> 
  <name value="id"/> 
  <status value="draft"/> 
  <date value="2017-12-20T15:52:34+11:00"/> 
  <publisher value="HL7 FHIR Standard"/> 
  <contact> 
    <telecom> 
      <system value="url"/> 
      <value value="http://hl7.org/fhir"/> 
    </telecom> 
  </contact> 
  <description value="Base StructureDefinition for id type: Any combination of letters, numerals, &quot;-&quot;
   and &quot;.&quot;, with a length limit of 64 characters.  (This might be an integer, an
   unprefixed OID, UUID or any other identifier pattern that meets these constraints.)  Ids
   are case-insensitive."/> 
  <fhirVersion value="3.2.0"/> 
  <kind value="primitive-type"/> 
  <abstract value="false"/> 
  <type value="id"/> 
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/string"/> 
  <derivation value="specialization"/> 
  <snapshot> 
    <element id="id">
      <path value="id"/> 
      <short value="Primitive Type id"/> 
      <definition value="Any combination of letters, numerals, &quot;-&quot; and &quot;.&quot;, with a length limit
       of 64 characters.  (This might be an integer, an unprefixed OID, UUID or any other identifier
       pattern that meets these constraints.)  Ids are case-insensitive."/> 
      <comment value="RFC 4122"/> 
      <min value="0"/> 
      <max value="*"/> 
      <base> 
        <path value="id"/> 
        <min value="0"/> 
        <max value="*"/> 
      </base> 
      <constraint> 
        <key value="ele-1"/> 
        <severity value="error"/> 
        <human value="All FHIR elements must have a @value or children"/> 
        <expression value="hasValue() | (children().count() &gt; id.count())"/> 
        <xpath value="@value|f:*|h:div"/> 
        <source value="Element"/> 
      </constraint> 
    </element> 
    <element id="id.id">
      <path value="id.id"/> 
      <representation value="xmlAttr"/> 
      <short value="xml:id (or equivalent in JSON)"/> 
      <definition value="unique id for the element within a resource (for internal references)"/> 
      <min value="0"/> 
      <max value="1"/> 
      <base> 
        <path value="Element.id"/> 
        <min value="0"/> 
        <max value="1"/> 
      </base> 
      <type> 
        <code value="string"/> 
      </type> 
    </element> 
    <element id="id.extension">
      <path value="id.extension"/> 
      <short value="Additional Content defined by implementations"/> 
      <definition value="May be used to represent additional information that is not part of the basic definition
       of the resource. In order 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 is allowed to define an extension, there is a set of requirements that SHALL
       be met as part of the definition of the extension."/> 
      <comment value="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 value="extensions"/> 
      <alias value="user content"/> 
      <min value="0"/> 
      <max value="*"/> 
      <base> 
        <path value="Element.extension"/> 
        <min value="0"/> 
        <max value="*"/> 
      </base> 
      <type> 
        <code value="Extension"/> 
      </type> 
    </element> 
    <element id="id.value">
      <path value="id.value"/> 
      <representation value="xmlAttr"/> 
      <short value="Primitive value for id"/> 
      <definition value="Primitive value for id"/> 
      <min value="0"/> 
      <max value="1"/> 
      <base> 
        <path value="string.value"/> 
        <min value="0"/> 
        <max value="1"/> 
      </base> 
    <!--  Note: primitive values do not have an assigned type. e.g. this is compiler magic. XML,
       JSON and RDF types provided by extension  -->
      <type> 
        <extension url="http://hl7.org/fhir/StructureDefinition/regex">
          <valueString value="[A-Za-z0-9\-\.]{1,64}"/> 
        </extension> 
        <code> 
          <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-json-type">
            <valueString value="string"/> 
          </extension> 
          <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-xml-type">
            <valueString value="xsd:string"/> 
          </extension> 
          <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-rdf-type">
            <valueString value="xsd:string"/> 
          </extension> 
        </code> 
      </type> 
    </element> 
  </snapshot> 
  <differential> 
    <element id="id">
      <path value="id"/> 
      <short value="Primitive Type id"/> 
      <definition value="Any combination of letters, numerals, &quot;-&quot; and &quot;.&quot;, with a length limit
       of 64 characters.  (This might be an integer, an unprefixed OID, UUID or any other identifier
       pattern that meets these constraints.)  Ids are case-insensitive."/> 
      <comment value="RFC 4122"/> 
      <min value="0"/> 
      <max value="*"/> 
    </element> 
    <element id="id.value">
      <path value="id.value"/> 
      <representation value="xmlAttr"/> 
      <short value="Primitive value for id"/> 
      <definition value="Primitive value for id"/> 
      <min value="0"/> 
      <max value="1"/> 
    <!--  Note: primitive values do not have an assigned type. e.g. this is compiler magic. XML,
       JSON and RDF types provided by extension  -->
      <type> 
        <extension url="http://hl7.org/fhir/StructureDefinition/regex">
          <valueString value="[A-Za-z0-9\-\.]{1,64}"/> 
        </extension> 
        <code> 
          <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-json-type">
            <valueString value="string"/> 
          </extension> 
          <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-xml-type">
            <valueString value="xsd:string"/> 
          </extension> 
          <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-rdf-type">
            <valueString value="xsd:string"/> 
          </extension> 
        </code> 
      </type> 
    </element> 
  </differential> 
</StructureDefinition>