RE: [xml-dev] stupid deterministic content model question

["Alessandro Triglia" <sandro@mclink.it>]

I wrote:
> 
> K. Ari Krupnikov wrote:
> > 
> > David Tolpin <dvd@davidashen.net> writes:
> > 
> > > > I'm having a blackout. Is (para+|(para*, summary)) 
> deterministic?
> > > 
> > > No, it is not.
> > > 
> > > > What I want is at least one element, at most one summary,
> > and if a
> > > > summary appears, it should be the last element.
> > > 
> > > (para*,(para|summary))
> > 
> > Hm, how would <para/><para/><para/> match this? The three
> > paras would match "para*", and then there would be nothing to 
> > satisfy "para|summary".
> > 
> > Is (a*, a) satisfiable at all? It reads as "forever and one day".
> 
> 
> If you want one or more <P> followed by an optional <S>, you can use:
> 
> (P, P*, S?)


Or simply

(P+, S?)

Alessandro


> 
> which, once expressed in XML Schema, does not violate the UPA.
> 
> Alessandro
> 
> 
> > 
> > Ari.
> > 
> > --
> > Elections only count as free and trials as fair if you can 
> > lose money betting on the outcome.
> > 
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