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Re: conditions in xml schema

• To: "K.R.Vaidyanathan" <vaidyanathan.khizhakancherry@w...>
• Subject: Re: conditions in xml schema
• From: John Cowan <jcowan@r...>
• Date: Mon, 11 Feb 2002 11:05:44 -0500
• Cc: xml-dev@l...
• References: <008f01c1b315$2bc41380$3e17a8c0@w...>
• User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.6) Gecko/20011120

K.R.Vaidyanathan wrote:


> Eg.. If element01 is present or element02 is present then element 03 should
> be present.
>       If either of ele01 or ele02 are present then the other is required


This is a co-occurrence constraint, which generally speaking
XML Schema cannot handle.  In RELAX NG (plug, plug), it's fairly
straightforward:

((element01 & element02?) | element02) & element03

 

-- 
John Cowan <jcowan@r...>     http://www.reutershealth.com
I amar prestar aen, han mathon ne nen,    http://www.ccil.org/~cowan
han mathon ne chae, a han noston ne 'wilith.  --Galadriel, _LOTR:FOTR_

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    • From: "K.R.Vaidyanathan" <vaidyanathan.khizhakancherry@w...>

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