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Re: xs:choice and xs:sequence question

From: Henry S. Thompson <ht@inf.ed.ac.uk>
Date: Thu, 12 Jan 2006 09:51:36 +0000
To: d_a_carver@yahoo.com
Cc: xmlschema-dev@w3.org
Message-ID: <f5bmzi1n593.fsf@erasmus.inf.ed.ac.uk>

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David Carver writes:

> [complex type defn]

Either you have a very old version of XSV, or you've changed the
example in some way before sending it. . .

XSV 2.10 reports 4 errors for your example : one for each element decl
in the 2nd sequence, because you're not allowed both 'ref' and 'type'
attributes, and one for the content model as a whole, because it
violates UPA.

> What I want to do is require DescriptionMessage, MeassageReasonCode if
> there is an ApplicationReasonCode, if there isn't an
> ApplicationReasonCode, then DescriptionMessage and MessageReasonCode
> are optional.

I don't _think_ there's a way to do that, given that you want ARC to
come last . . . The closest I can get is

 (DM+, MR, ARC?)?

which differs from your requirement in not allowing DM w/o MR or MR
w/o DM (but _maybe_ you didn't want to allow that anyway -- I could
read your description either way).

Hope this helps.

ht
- -- 
 Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
                     Half-time member of W3C Team
    2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
            Fax: (44) 131 650-4587, e-mail: ht@inf.ed.ac.uk
                   URL: http://www.ltg.ed.ac.uk/~ht/
[mail really from me _always_ has this .sig -- mail without it is forged spam]
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Received on Thursday, 12 January 2006 09:51:47 GMT

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