Cross-Version Extension for SearchParameter.chain in R3

Context of Use

This extension may be used in the following contexts:

• element SearchParameter (For version R2)
• extension http://hl7.org/fhir/1.0/StructureDefinition/extension-SearchParameter

Name	Flags	Card.	Type	Description & Constraints
Extension		0..*	Extension	Chained names supported
extension		..0
value[x]		1..	string
url				"http://hl7.org/fhir/3.0/StructureDefinition/extension-SearchParameter.chain"
Documentation for this format

{
  "resourceType" : "StructureDefinition",
  "id" : "xv-r3-spd.chain",
  "url" : "http://hl7.org/fhir/3.0/StructureDefinition/extension-SearchParameter.chain",
  "name" : "XVerExtensionSearchParameter.chainR3",
  "title" : "Cross-Version Extension for SearchParameter.chain in R3",
  "status" : "active",
  "experimental" : false,
  "publisher" : "Health Level Seven International (FHIR Infrastructure)",
  "contact" : [{
    "telecom" : [{
      "system" : "url",
      "value" : "http://hl7.org/fhir"
    }]
  },
  {
    "telecom" : [{
      "system" : "url",
      "value" : "http://www.hl7.org/Special/committees/fiwg/index.cfm"
    }]
  }],
  "description" : "Cross-Version Extension for SearchParameter.chain. Valid in versions R2\r\n\r\nThis is a valid cross-version extension because it's counted as a new element",
  "jurisdiction" : [{
    "coding" : [{
      "system" : "http://unstats.un.org/unsd/methods/m49/m49.htm",
      "code" : "001"
    }]
  }],
  "fhirVersion" : "5.0.0",
  "kind" : "complex-type",
  "abstract" : false,
  "context" : [{
    "extension" : [{
      "extension" : [{
        "url" : "startFhirVersion",
        "valueCode" : "1.0"
      },
      {
        "url" : "endFhirVersion",
        "valueCode" : "1.0"
      }],
      "url" : "http://hl7.org/fhir/StructureDefinition/version-specific-use"
    }],
    "type" : "element",
    "expression" : "SearchParameter"
  },
  {
    "type" : "extension",
    "expression" : "http://hl7.org/fhir/1.0/StructureDefinition/extension-SearchParameter"
  }],
  "type" : "Extension",
  "baseDefinition" : "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation" : "constraint",
  "differential" : {
    "element" : [{
      "path" : "Extension",
      "short" : "Chained names supported",
      "definition" : "Contains the names of any search parameters which may be chained to the containing search parameter. Chained parameters may be added to search parameters of type reference, and specify that resources will only be returned if they contain a reference to a resource which matches the chained parameter value. Values for this field should be drawn from SearchParameter.code for a parameter on the target resource type.",
      "comment" : "Systems are not required to list all the chain names they support, but if they don't list them, clients may not know to use them.",
      "min" : 0,
      "max" : "*",
      "isModifier" : false
    },
    {
      "path" : "Extension.extension",
      "max" : "0"
    },
    {
      "path" : "Extension.value[x]",
      "min" : 1,
      "type" : [{
        "code" : "string"
      }]
    },
    {
      "path" : "Extension.url",
      "fixedUri" : "http://hl7.org/fhir/3.0/StructureDefinition/extension-SearchParameter.chain"
    }]
  }
}