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- From: Leigh Dodds <email@example.com>
- To: xml-dev <firstname.lastname@example.org>
- Date: Fri, 14 May 1999 14:50:05 +0100
I've being toying with a content model now and I think my brain
must be overloaded because I can't think of the best way to
format it so it'll parse.
Basically I want to say that a tag should:
1. Contain #PCDATA, *OR*
2. an optional tag X followed by zero or more occurences of tag Y
I had thought something like : (#PCDATA|(X?, Y*)
but that doesn't seem to parse.
At the moment I've had to settle on (#PCDATA|X|Y)* just so I
can continue working, and manually check for the moment that
I'm building documents which I consider legal.
Any of you XML gurus got any suggestions?
p.s. A variation I'd also like to consider is changing the model
such that 2. (above) becomes:
2. zero or more occurences of X, followed by zero or more occurences
In this case X,Y can be interspersed. In the former, X *must* be before
Y if its provided.
"Never Do With More, What Can Be Achieved With Less"
---William of Occam
Leigh Dodds Eml: email@example.com
ingenta ltd Tel: +44 1225 826619
BUCS Building, University of Bath Fax: +44 1225 826283
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