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Re: Best Practice - beyond schema

• To: "Xml-Dev" <xml-dev@l...>
• Subject: Re: Best Practice - beyond schema
• From: "Rick Jelliffe" <ricko@a...>
• Date: Sat, 22 Jun 2002 17:09:48 +1000
• References: <NBBBIBMKFOFCNEBAKDPLAEOCFLAA.paul@a...><f5bfzzluh1p.fsf@c...><d2f0huo6k63f967nuukl2jo41584l2ud3d@4...> <f5bznxo65jf.fsf@c...>

From: "Henry S. Thompson" <ht@c...>

> > I don't think use of <xs:any> etc is enough to allow us to use two
> > XML Schema schemas in series.
> 
> Not obvious why this won't work -- I hadn't thought of it but it's a
> good idea, if your locale-specific variants are not of the
> optional->required/prohibited variety.  

Being able to take a few passes at the data is a really useful technique.
The effective schema is an intersection of schemas.

It is built into Schematron (each pattern equivalent to a pass, though it
may not be implemented that way), and I see James Clark was able
to represent the exclusions in HTML using three passes in RELAX NG
(one for the general schema, one for the restriction that an <a> cannot
contain a child <a> at any level, and something else: presumably
XSD would require the same, sniff :-)

Cheers
Rick Jelliffe

• References:
  • Best Practice - beyond schema
    • From: "Paul Spencer" <paul@a...>
  • Re: Best Practice - beyond schema
    • From: ht@c... (Henry S. Thompson)
  • Re: Best Practice - beyond schema
    • From: Paul Spencer <paul@a...>
  • Re: Best Practice - beyond schema
    • From: ht@c... (Henry S. Thompson)

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