<status value="draft" /> <experimental value="true" /> <date value="2019-02-10T00:11:08+00:00" /> <publisher value="HL7 FHIR Standard" /> <contact> <telecom> <system value="url" /> <value value="http://hl7.org/fhir" /> </telecom> </contact> <description value="Data Element for ElementDefinition.constraint.xpath" /> <purpose value="Data Elements are defined for each element to assist in questionnaire construction etc" /> <fhirVersion value="4.0.0" /> <mapping> <identity value="v2" /> <uri value="http://hl7.org/v2" /> <name value="HL7 v2 Mapping" /> </mapping> <mapping> <identity value="rim" /> <uri value="http://hl7.org/v3" /> <name value="RIM Mapping" /> </mapping> <mapping> <identity value="iso11179" /> <uri value="http://metadata-standards.org/11179/" /> <name value="ISO 11179" /> </mapping> <mapping> <identity value="dex" /> <uri value="http://ihe.net/data-element-exchange" /> <name value="IHE Data Element Exchange (DEX)" /> </mapping> <mapping> <identity value="loinc" /> <uri value="http://loinc.org" /> <name value="LOINC code for the element" /> </mapping> <kind value="logical" /> <abstract value="false" /> <type value="ElementDefinition.constraint.xpath" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Element" /> <derivation value="specialization" /> <snapshot> <element id="ElementDefinition.constraint.xpath"> <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status"> <valueCode value="trial-use" /> </extension> <path value="ElementDefinition.constraint.xpath" /> <short value="XPath expression of constraint" /> <definition value="An XPath expression of constraint that can be executed to see if this constraint is met." /> <comment value="Elements SHALL use "f" as the namespace prefix for the FHIR namespace, and "x" for the xhtml namespace, and SHALL NOT use any other prefixes. Note: XPath is generally considered not useful because it does not apply to JSON and other formats and because of XSLT implementation issues, and may be removed in the future." /> <requirements value="Used in Schematron tests of the validity of the resource." /> <min value="0" /> <max value="1" /> <base> <path value="ElementDefinition.constraint.xpath" /> <min value="0" /> <max value="1" /> </base> <type> <code value="string" /> </type> <isModifier value="false" /> <isSummary value="true" /> <mapping> <identity value="rim" /> <map value="N/A (MIF territory)" /> </mapping> </element> </snapshot> </StructureDefinition>