[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

RE: semantics in schema (xsd)

• To: 'Chiusano Joseph' <chiusano_joseph@b...>, Pedro Salazar <pedro-b-salazar@p...>
• Subject: RE: semantics in schema (xsd)
• From: Tom Gaven <Tom.Gaven@e...>
• Date: Wed, 25 Feb 2004 16:24:03 -0500
• Cc: xml-dev@l...

 RelaxNG can also handle this with the following schema:

start = human
human = element human { husbandModel | wifeModel }
husbandModel= ( maleGenderAttr, element husband { text } )
wifeModel = ( femaleGenderAttr, element wife { text } )
maleGenderAttr = attribute gender { "male" }
femaleGenderAttr = attribute gender { "female" }





-----Original Message-----
From: Chiusano Joseph [mailto:chiusano_joseph@b...] 
Sent: Wednesday, February 25, 2004 3:34 PM
To: Pedro Salazar
Cc: xml-dev@l...
Subject: Re:  semantics in schema (xsd)


This is not possible with W3C Schema - we normally refer to this requirement
as "co-occurrence constraints". This may be more than what you need, but you
could express these requirements as classes in RDF or OWL (where a wife
could be a subclass of female, for example).

Schematron will allow you to do this, however, and someone will most likely
be along soon to tell you how.

Kind Regards,
Joe Chiusano
Booz | Allen | Hamilton
Strategy and Technology Consultants to the World

Pedro Salazar wrote:
> 
> Greetings,
> 
> I'm creating a schema file but by several times I feel the needed of 
> something to validate my sub-elements in tree (children elements) 
> subordinated to an attribute value on the parent element.
> 
> Is it possible to validate this with the schema semantics?
> 
> For instance, a schema may define an element called "human" that would 
> allow to have a <wife> or <husband> element below it. However, I would 
> like to apply an extra semantic rule that would only allow the <wife> 
> element be inside a human of gender type "female", and the same thing 
> for <husband> with "male". Is it possible?
> 
> <human gender="female">
>    <wife />
> </human>
> 
> <human gender="male">
>    <husband />
> </human>
> 
> thanks,
> Pedro Salazar.
> --
> PS
> pedro-b-salazar_at_ptinovacao_dot_pt
> PGP:0E129E31D803BC61
> 
> -----------------------------------------------------------------
> The xml-dev list is sponsored by XML.org <http://www.xml.org>, an 
> initiative of OASIS <http://www.oasis-open.org>
> 
> The list archives are at http://lists.xml.org/archives/xml-dev/
> 
> To subscribe or unsubscribe from this list use the subscription
> manager: <http://www.oasis-open.org/mlmanage/index.php>

-----------------------------------------------------------------
The xml-dev list is sponsored by XML.org <http://www.xml.org>, an initiative
of OASIS <http://www.oasis-open.org>

The list archives are at http://lists.xml.org/archives/xml-dev/

To subscribe or unsubscribe from this list use the subscription
manager: <http://www.oasis-open.org/mlmanage/index.php>

• Prev by Date: Where things stand with SAX
• Next by Date: Re: semantics in schema (xsd)
• Previous by thread: semantics in schema (xsd)
• Next by thread: RE: semantics in schema (xsd)
• Index(es):
  • Date
  • Thread