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   Re: [xml-dev] Element declaring

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I try the example:
<xs:simpleType name='MyEnum' >
  <xs:restriction base='xs:QName' >
   <xs:enumeration value='foo:Val1' />
   <xs:enumeration value='foo:Val2' />
   <xs:enumeration value='foo:Val3' />

 <xs:simpleType name='MyOpenEnum' >
  <xs:union memberTypes='tns:MyEnum xs:QName' />

 <xs:element name='MyData' type='tns:MyOpenEnum' />

but, in the code, MyData is the String type. That means i can't use a  MyEnum instance for MyData.
Is that right?

     Best Regards.
       Jacky Keenmicro
   ----- Original Message ----- 
From: "Jonathan Robie" <jonathan.robie@datadirect.com>
To: "Rich Salz" <rsalz@datapower.com>
Cc: "David Carlisle" <davidc@nag.co.uk>; <xml-dev@lists.xml.org>
Sent: Thursday, October 14, 2004 9:08 PM
Subject: Re: [xml-dev] Element declaring

> Rich Salz wrote:
> > Sure.  It's like saying "xsd:string" except that it gives special
> > significance to particular values.  You can enumerate them in the schema,
> > define semantics in a spec more easily, etc.
> > 
> > It's just a neat hack.  For standards, in particular, that want to define
> > some base functionality and still allow an extensibility point, this makes
> > it explicit.
> Right - programs can know exactly what to do with the enumerated values. 
> If it's not one of these, then all the program cares about is that it is 
> something else, which is why I like the 'other' trick. But the program 
> might want to know where to find the user's value so it can be 
> displayed, even if it has no special semantics for the program.
> Jonathan
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