Re: [xml-dev] Relax NG question: extending an enumeration list?

[Dave Pawson <davep@dpawson.co.uk>]

Costello, Roger L. wrote:
> Hi Folks,
> 
> Is there a way, in Relax NG, to extend an enumeration list?
> 
> For example, here is a schema with an enumeration list:
> 
> --------------------------------------------
> Color.rng
> --------------------------------------------
> <?xml version="1.0" encoding="UTF-8"?>
> <grammar xmlns="http://relaxng.org/ns/structure/1.0";>
>     <start>
>         <element name="Color">
>             <ref name="ColorDefn" />
>         </element>
>     </start>
>     <define name="ColorDefn">
>         <choice>
>             <value>white</value>
>             <value>grey</value>
>             <value>blue</value>
>         </choice>
>     </define>
> </grammar>
> 
> I would like to create another schema that imports Color.rng and
> extends its enumeration list.  Here is my (incorrect) attempt:
> 
> --------------------------------------------
> Color-ext.rng
> --------------------------------------------
> <?xml version="1.0" encoding="UTF-8"?>
> <grammar xmlns="http://relaxng.org/ns/structure/1.0";>
> 
>     <include href="Color.rng" />
> 
>     <define name="ColorDefn" combine="interleave">
>         <choice>
>             <value>green</value>
>             <value>purple</value>
>         </choice>
>     </define>
> </grammar>
> 
> What is the correct way of doing it (if it's possible)?  <define name="Month">
     <a:documentation>
       <html:p>Element </html:p>
     </a:documentation>
     <choice>
       <value>Jan</value>
       <value>Feb</value>
       <value>Mar</value>
       <value>Apr</value>
       <value>May</value>
       <value>Jun</value>
       <value>Jul</value>
       <value>Aug</value>
       <value>Sep</value>
       <value>Oct</value>
       <value>Nov</value>
       <value>Dec</value>
     </choice>
   </define>


Is my 'exampler'

HTH


regards

-- 
Dave Pawson
XSLT XSL-FO FAQ.
http://www.dpawson.co.uk