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Re: Fine namespace control in XML Schema

• To: Daniel Prager <danielp@d...>
• Subject: Re: Fine namespace control in XML Schema
• From: Eddie Robertsson <erobertsson@a...>
• Date: Thu, 11 Jul 2002 17:10:15 +1000
• Cc: xml-dev <xml-dev@l...>
• References: <3D2CF3EF.6CFAD59E@d...> <3D2D03AB.7010407@a...> <3D2D10DA.674B7682@d...>
• User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0.0) Gecko/20020530

>
>
>Hi Eddie
>
>Thanks -- this is certainly getting close to what I would ideally like.
>
>Your 3 schemas are a great step forward, but they do admit a false
>positive (taking the RELAX NG definition as canonical) by passing
>the following document as valid:
>
><a:frog xmlns:a="http://www.example.com/a">
> <name> Spotted tree frog </name>
> <colour> Blue with red spots </colour>
> <leap> minimal </leap>
></a:frog>
>
>Great step forward; can you (or anyone) do even better?
>
No, I think this is as close as you can get using W3C XML Schema. You 
can include a Schematron rule to check the root element but that might 
be overkill for your needs:

....
    <xs:element name="example">
        <xs:annotation>
            <xs:appinfo>
                <sch:pattern name="Test document element" 
xmlns:sch="http://www.ascc.net/xml/schematron">
                    <sch:rule context="/">
                        <sch:assert test="example">The document element 
must be &lt;example></sch:assert>
                    </sch:rule>
                </sch:pattern>
            </xs:appinfo>
        </xs:annotation>
        <xs:complexType>
            <xs:sequence>
                <xs:element ref="a:frog"/>
                <xs:element ref="b:frog"/>
            </xs:sequence>
        </xs:complexType>
    </xs:element>
.....

Cheers,
/Eddie

• References:
  • Fine namespace control in XML Schema
    • From: Daniel Prager <danielp@d...>
  • Re: Fine namespace control in XML Schema
    • From: Eddie Robertsson <erobertsson@a...>
  • Re: Fine namespace control in XML Schema
    • From: Daniel Prager <danielp@d...>

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