Re: [relax-ng-comment] Mixing patterns and (empty) tags

[Rick Jelliffe <ricko@topologi.com>]

If someone has a Schematron implementation using the EXSLT extensions,
then the  regexp:match() function will be available.   

For usage, see http://www.exslt.org/regexp/index.html

It should only take the addition of 
   
                xmlns:regexp="http://exslt.org/regular-expressions";
                extension-element-prefixes="regexp"

to the output XSLT template for Schematron, for anyone using an XSLT which
provides the EXSLT extensions.  I will add this to the open source templates.

What is the latest news on RELAX NG adding regular expression support of text?

Cheers
Rick Jelliffe


----- Original Message ----- 
From: "Daniel Prager" <danielp@deakin.edu.au>
To: "Rick Jelliffe" <ricko@topologi.com>; "relax-ng" <relax-ng-comment@lists.oasis-open.org>
Sent: Monday, September 30, 2002 2:39 PM
Subject: Re: [relax-ng-comment] Mixing patterns and (empty) tags


> Hi Rick
> 
> Thanks for your reply.
> 
> > If you build in the idea that you may have a RELAX + Schematron
> > combination from the beginning, you may find you can
> > get the best of both worlds: a pair of nice relatively simple schemas.
> 
> Fair comment.  In my case, however, co-occurrence constraints
> seem to enter in at a lower level of improtance, hence I've started
> (some time ago now!) with the grammar-based approaches.
> 
> However, I'd certainly have a good look at Schematron if it helped
> to resolve the current impasse.  But from Eddie's suggestion it
> appears that it doesn't actually help owing to the absence of
> the ability to test against regular expressions.  Is that correct?
> 
> The mythical RNG schema
> 
> <element name="example">
>     <interleave>
>         <data type="token">
>             <param name="pattern">[a-zA-Z0-9]+</param>
>         </data>
>         <element name="a"> <empty/> </element>
>         <element name="b"> <empty/> </element>
>         <element name="c"> <empty/> </element>
>     </interleave>
> </element>
> 
> would validate my original example (now corrected!)
> 
> <example>
>     The quick <a/> brown fox <b/> <a/> jumped <c/> over the lazy dog 5 times <c/>
> </example>
> 
> but would reject
> 
> <example>
>     An  <a/> example <b/> <a/> containing characters such as *&^%$#. <c/>
> </example>
> 
> Can Schematron (possibly + RELAX NG) do better in this case?
> 
> 
> Cheers
> 
> Daniel
> 
> 
> 
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