On 6 Jun, 04:46, Grant Robertson <b...@bogus.invalid> wrote:
> If I use the 'any' element in my schema to allow elements from another
> schema to be used in instance documents based on my schema, is there a
> way to force that the contents of that element must be an entire,
> complete instance document for that other schema?
>
> Let's say I have the following schema:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
>     <xs:element name="BogusElement" type="BogusType"/>
>     <xs:complexType name="BogusType">
>         <xs:sequence>
>             <xs:any namespace="http://www.w3.org/1999/xhtml"/>
>         </xs:sequence>
>     </xs:complexType>
> </xs:schema>

This would allow any global element from www.w3.org/1999/xhtml/.

> <?xml version="1.0" encoding="UTF-8"?>
> <BogusElement
>   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>   xsi:noNamespaceSchemaLocation="Untitled1.xsd"
>   xmlns:xhtml="http://www.w3.org/1999/xhtml">
>    <xhtml:strong>Bolded Text.</xhtml:strong>
> </BogusElement>
>
> be a valid document under the above schema?

Yes.

> How can I make it so that the contents of the BogusElement element in the
> instance document must be a complete XHTML document in order to be valid?
> Or would I just have to make that a verbal rule, not expressed in the
> schema?

You could try the following schema approach...

 <?xml version="1.0" encoding="UTF-8"?>
 <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
     <xs:element name="BogusElement" type="BogusType"/>
     <xs:complexType name="BogusType">
         <xs:sequence>
             <xs:element xmlns:xhtml="http://www.w3.org/1999/xhtml"
ref="xhtml:xthml"/>
         </xs:sequence>
     </xs:complexType>
 </xs:schema>

> To complicate things further: Let's say I wanted that element to contain
> only one of a list of valid, complete documents such as either a complete
> html document OR a complete XHTML document OR a complete DocBook
> document, all with headers. How would I do that?

Including an HTML document obviously has the problem that an HTML
document is not typically well-formed XML.  But we can leave that
aside for the moment!

Also, I'm not sure of the valid set of DocBook schemas.

Given that, your schema could look something like:

 <?xml version="1.0" encoding="UTF-8"?>
 <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
     <xs:element name="BogusElement" type="BogusType"/>
     <xs:complexType name="BogusType">
         <xs:choice>    <!--Changed from sequence-->
             <xs:element xmlns:xhtml="http://www.w3.org/1999/xhtml"
ref="xhtml:xthml"/>
             <xs:element xmlns:docbook="http://docbook"
ref="docbook:docbook"/>
         </xs:choice>
     </xs:complexType>
 </xs:schema>

HTH,

Pete.
--
=============================================
Pete Cordell
Codalogic Ltd
for XML Schema to C++ data binding visit
 http://www.codalogic.com/lmx/
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