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Re: what is the meaning of elementFormDefault="qualified" in a

  • From: "G. Ken Holman" <gkholman@C...>
  • To: "XML Developers List" <xml-dev@l...>
  • Date: Thu, 03 May 2007 08:00:38 -0400

Re:  what is the meaning of elementFormDefault="qualified" in a
At 2007-05-03 11:10 +0200, bryan rasmussen wrote:
>As per the subject line.
>
>I am looking over a rather big application with some XML schemas in
>which elementFormDefault is always given as qualified but there is no
>targetNamespace. This strikes me as weird because the implication is
>that one would have instances like this
>
><t:test xmlns:t="" xsi:schemaLocation="myschema.xsd"
>xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
>
>which by my understanding would be very illegal.

I'll defer to others with more expertise on the W3C schema question 
but regarding your test instance, the namespaces specification 
section 2.2 forbids what you've put forward for testing:

   http://www.w3.org/TR/2006/REC-xml-names-20060816/#iri-use
   The empty string, though it is a legal URI reference, cannot
   be used as a namespace name

The empty string can only be used for the default namespace to 
specify no namespace ... it cannot be used for a prefixed namespace.

I hope this helps.

. . . . . . . . . . . . Ken

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