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RE: XSD question: Can the name of a simpleType be the name of abuilt-in

• From: "Dowling, Nora M." <ndowling@mitre.org>
• To: "Costello, Roger L." <costello@mitre.org>, "xml-dev@l..."<xml-dev@l...>
• Date: Fri, 6 Sep 2019 17:33:09 +0000

Roger,

XML Spy considers it to be valid.

-Nora

-----Original Message-----
From: Costello, Roger L. <costello@mitre.org> 
Sent: Friday, September 6, 2019 1:14 PM
To: xml-dev@lists.xml.org
Subject:  XSD question: Can the name of a simpleType be the name of
a built-in datatype?

Hi Folks,

Is this legal:

<xsd:simpleType name="boolean" id="boolean">
       <xsd:restriction base="xsd:boolean">
       </xsd:restriction>
 </xsd:simpleType>

Notice that the name of the simpleType (boolean) is the name of the built-in
boolean datatype.

Saxon seems to think it's illegal:

Error: A simple type must not be based on itself

I don't see anything in XML Schema Part 1 that prohibits the name of a
simpleType being the name of a built-in datatype.

/Roger

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• References:
  • XSD question: Can the name of a simpleType be the name of a built-indatatype?
    • From: "Costello, Roger L." <costello@mitre.org>