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This is a frozen snapshot of the FHIR specification created for the purpose of balloting the GAO implementation Guide. It includes draft changes that may be part of the future DSTU 2.1 release but further change is expected. Readers should focus solely on the GAO implementation content, and FHIR DSTU 2 for other purposes.

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Extension: Regular expression pattern

URL for this extension:

http://hl7.org/fhir/StructureDefinition/regex

Status: draft. Extension maintained by: Health Level Seven International (FHIR Infrastructure)

A regular expression that defines the syntax for the data element to be considered valid.

Context of Use: Use on element: ElementDefinition, Questionnaire.item

usage info: insert a list of places where this extension is used

Extension Content

• Summary
• Full Structure
• XML
• JSON
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Summary

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	string	URL = http://hl7.org/fhir/StructureDefinition/regex Regular expression pattern: A regular expression that defines the syntax for the data element to be considered valid. Use on element: ElementDefinition, Questionnaire.item
Documentation for this format

Fulle Structure

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	Extension	URL = http://hl7.org/fhir/StructureDefinition/regex Regular expression pattern: A regular expression that defines the syntax for the data element to be considered valid. Use on element: ElementDefinition, Questionnaire.item
extension		0..0
url		1..1	uri	"http://hl7.org/fhir/StructureDefinition/regex"
valueString		1..1	string	Value of extension
Documentation for this format

XML Template

<!-- Regular expression pattern -->

<extension xmlns="http://hl7.org/fhir"
     url="http://hl7.org/fhir/StructureDefinition/regex" >
  <!-- from Element: extension -->
 <valueString value="[string]"/><!-- 1..1 Value of extension -->
</extension>

JSON Template

{ // Regular expression pattern
  // from Element: extension
    "url" : "http://hl7.org/fhir/StructureDefinition/regex", // R! 
    "valueString" : "<string>" // R! Value of extension
  }

Summary

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	string	URL = http://hl7.org/fhir/StructureDefinition/regex Regular expression pattern: A regular expression that defines the syntax for the data element to be considered valid. Use on element: ElementDefinition, Questionnaire.item
Documentation for this format

Full Structure

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	Extension	URL = http://hl7.org/fhir/StructureDefinition/regex Regular expression pattern: A regular expression that defines the syntax for the data element to be considered valid. Use on element: ElementDefinition, Questionnaire.item
extension		0..0
url		1..1	uri	"http://hl7.org/fhir/StructureDefinition/regex"
valueString		1..1	string	Value of extension
Documentation for this format

XML Template

<!-- Regular expression pattern -->

<extension xmlns="http://hl7.org/fhir"
     url="http://hl7.org/fhir/StructureDefinition/regex" >
  <!-- from Element: extension -->
 <valueString value="[string]"/><!-- 1..1 Value of extension -->
</extension>

JSON Template

{ // Regular expression pattern
  // from Element: extension
    "url" : "http://hl7.org/fhir/StructureDefinition/regex", // R! 
    "valueString" : "<string>" // R! Value of extension
  }