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This doesn't work.
Section 3.8.1: "When two or more particles contained directly or indirectly
in the {particles} of a model group have identically named element
declarations as their {term}, the type definitions of those declarations
must be the same." More specifically, see Schema Component Constraint:
Element Declarations Consistent.
Michael Kay
> -----Original Message-----
> From: Bryce K. Nielsen [mailto:bryce@sysonyx.com]
> Sent: 14 June 2004 05:23
> To: XML Developers List
> Subject: Re: [xml-dev] XML schema: how to define choice
> between value as an attribute and value as element text
>
> In a rather stange looking schema you could. For example:
>
> <schema>
> <simpleType name="PersonNameType">
> <restriction>
> <!-- put your restrictions here, like length and stuff -->
> </restriction>
> </simpleType>
>
> <element name="Person">
> <complexType>
> <choice>
>
> <sequence>
> <element name="PersonName">
> <complexType>
> <simpleContent>
> <extension>
> <attribute name="value" type="PersonNameType"/>
> </extension>
> </simpleConent>
> </complexType>
> </element>
> <!-- Add all your other *attribute* elements here -->
> </sequence>
>
> <sequence>
> <element name="PersonName" type="PersonNameType"/>
> <!-- Add all your other *element text* elements here -->
> </sequence>
>
>
> </choice>
> </complexType>
> </element>
> </schema>
>
> This sort of schema would in effect do what you're looking
> for, making all
> the nodes have either a "value" attribute, or the text of the
> element having
> the value. The only restriction is that you couldn't do this
> to the document
> element, since there's no way to "choice" a document element
> with the same
> name. It's an ugly schema, IMHO, but would work.
>
> Bryce K. Nielsen
> SysOnyx, Inc. (www.sysonyx.com)
> Makers of xmlHack, the Simple XML Editor
> http://www.sysonyx.com/products/xmlhack
>
>
> ----- Original Message -----
> From: "Patrik Beno" <pb@patrikbeno.net>
> To: "XML Developers List" <xml-dev@lists.xml.org>
> Sent: Saturday, June 12, 2004 2:48 PM
> Subject: [xml-dev] XML schema: how to define choice between
> value as an
> attribute and value as element text
>
>
>
> Hey there :-)
>
>
> Suppose I have simple element <PersonName>.
>
> I want to define restriction that data (person name itself) may be
> defined either in "value" attribute or as element text.
>
> Meaning - either this way:
>
> <PersonName value="John Doe"/>
>
> or this way:
>
> <PersonName> John Doe </PersonName>
>
> But this is forbidden:
>
> <PersonName value="John Doe"> Jane Smith <PersonName>
>
> I have been reading spec, tutorials, references, I have
> been gooooooooogling for hours but I can't find out how to do this or
> even if it is feasible at all.
>
> Please - can this restriction be defined using XML schema?
> If so, how? Can anyone provide an example?
>
> thnx
>
> --
> Patrik Beno
> mailto:pb@patrikbeno.net
>
>
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