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Re: XML Schema Either Text Or Sequence

• To: xml-dev@l...
• Subject: Re: XML Schema Either Text Or Sequence
• From: ht@i... (Henry S. Thompson)
• Date: Mon, 20 Dec 2004 06:43:15 +0000
• In-reply-to: <20041220024655.GA11749@m...> (Alan Gutierrez'smessage of "Sun, 19 Dec 2004 21:46:55 -0500")
• References: <20041220024655.GA11749@m...>
• User-agent: Gnus/5.1006 (Gnus v5.10.6) XEmacs/21.4 (Security ThroughObscurity, linux)

>    I'd like to assert that the element set either contains a simple
>    type or more set elements.

As specified, your requirement cannot be met by W3C XML Schema.

I'm tempted to say that this looks like questionable markup design,
since all the structural information which would allow validation
and/or type assignment to do any useful work is 'hidden' in
attributes, and to wonder why you don't say

 <phone>
  <type>work</type>
  <number>555-1212</number>
 </phone>

but I won't, because I don't know what other constraints you are
trying to satisfy. . .

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@i...
                   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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