- From: Eric van der Vlist <vdv@dyomedea.com>
- Date: Wed, 29 May 2002 13:43:06 +0200 (CEST)
- To: <ijs@decisionsoft.com>
- Cc: <vdv@dyomedea.com>, <xmlschema-dev@w3.org>
Ian Stokes-Rees said:
> I meant this only in the sense that a many data types will have
> difficulty being interpretted meaningfully on mixed content. For
> example, imagine
>
> <A>start<B>middle</B>end</A>
>
> If the data type for A is any numeric data type, a date, or some
> pattern, it will be very difficult to meaningfully apply.
This is also what I meant :-) ... with Relax NG you can define what
"start", "middle" and "end" look like. And this is so simple that it's
surprising that other schema languages may stumble on this issue:
<element name="A">
<data type="TypeOfStart"/>
<element name="B">
<data type="TypeOfMiddle"/>
</element>
<data type="TypeOfEnd"/>
</element>
What you can't do with Relax NG alone is to say for instance that the
string value of "A" is a date, but this will be made possible by the DSDL
interoperabily framework (which BTW, should enable W3C XML Schema to do so
as well).
Eric
--
See you in San Diego.
http://conferences.oreillynet.com/os2002/
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Eric van der Vlist http://xmlfr.org http://dyomedea.com
http://xsltunit.org http://4xt.org http://examplotron.org
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Received on Wednesday, 29 May 2002 07:43:42 UTC