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FHIRPath

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{
  "resourceType": "StructureDefinition",
  "id": "oid",
  "text": {
    "status": "generated",
    "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n      <p>Primitive type 'oid'</p>\n    </div>"
  },
  "extension": [
    {
      "url": "http://hl7.org/fhir/tools/StructureDefinition/xml-namespace",
      "valueUri": "urn:hl7-org:v3"
    },
    {
      "url": "http://hl7.org/fhir/tools/StructureDefinition/logical-container",
      "valueUri": "http://hl7.org/cda/stds/core/StructureDefinition/ClinicalDocument"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-type-characteristics",
      "valueCode": "can-bind"
    }
  ],
  "url": "http://hl7.org/cda/stds/core/StructureDefinition/oid",
  "version": "2.0.1-sd",
  "name": "oid",
  "title": "oid: ISO Object Identifier",
  "status": "active",
  "experimental": false,
  "date": "2024-12-18T01:03:45+00:00",
  "publisher": "Health Level 7",
  "contact": [
    {
      "name": "HL7 International - Structured Documents",
      "telecom": [
        {
          "system": "url",
          "value": "http://www.hl7.org/Special/committees/structure"
        },
        {
          "system": "email",
          "value": "structdog@lists.HL7.org"
        }
      ]
    }
  ],
  "description": "A globally unique string representing an ISO Object Identifier (OID) in a form that consists only of numbers and dots (e.g., '2.16.840.1.113883.3.1').",
  "fhirVersion": "5.0.0",
  "kind": "primitive-type",
  "abstract": false,
  "type": "string",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/string",
  "derivation": "constraint",
  "snapshot": {
    "element": [
      {
        "id": "string",
        "path": "string",
        "short": "Primitive Type string",
        "definition": "A sequence of Unicode characters",
        "comment": "Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size",
        "min": 0,
        "max": "*",
        "base": {
          "path": "string",
          "min": 0,
          "max": "*"
        },
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          },
          {
            "key": "oid-pattern",
            "severity": "error",
            "human": "Must conform to OID (#.#.#), UUID (32 hexadecimal digits separated by hyphens), or RUID (a letter followed by any combination of letters, numbers or hyphens)",
            "expression": "matches('^[0-2](\\\\.(0|[1-9][0-9]*))+$')"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "string.id",
        "path": "string.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "xml:id (or equivalent in JSON)",
        "definition": "unique id for the element within a resource (for internal references)",
        "min": 0,
        "max": "0",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "string.extension",
        "path": "string.extension",
        "short": "Extension",
        "definition": "An Extension",
        "min": 0,
        "max": "0",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "string.value",
        "path": "string.value",
        "representation": [
          "xmlAttr"
        ],
        "short": "Primitive value for string",
        "definition": "The actual value",
        "min": 0,
        "max": "1",
        "base": {
          "path": "string.value",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              },
              {
                "url": "http://hl7.org/fhir/StructureDefinition/regex",
                "valueString": "^[\\s\\S]+$"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "maxLength": 1048576,
        "isModifier": false,
        "isSummary": false
      }
    ]
  },
  "differential": {
    "element": [
      {
        "id": "string",
        "path": "string",
        "constraint": [
          {
            "key": "oid-pattern",
            "severity": "error",
            "human": "Must conform to OID (#.#.#), UUID (32 hexadecimal digits separated by hyphens), or RUID (a letter followed by any combination of letters, numbers or hyphens)",
            "expression": "matches('^[0-2](\\\\.(0|[1-9][0-9]*))+$')"
          }
        ]
      },
      {
        "id": "string.id",
        "path": "string.id",
        "max": "0"
      },
      {
        "id": "string.extension",
        "path": "string.extension",
        "max": "0"
      }
    ]
  }
}

name : oid

{

}