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RE: RE: Muenchian technique, was (Keys on multiple el

Subject: RE: RE: Muenchian technique, was (Keys on multiple element types)
From: DPawson@xxxxxxxxxxx
Date: Tue, 5 Feb 2002 14:22:17 -0000
muenchian technique
Mike said.
> > Mike, your books states that the [1] is redundant for the Muenchian
> > technique, yet it keeps getting repeated.
> 
> The [1] is indeed redundant, because generate-id(), if given 
> a set of more
> than one node, returns the id for the first one. But I think 
> using the [1]
> is good practice, as it documents clearly what you're doing.
> 
> Also, with XSLT 2.0 we might start to see processors that 
> choose to do more
> rigorous type-checking, and although omitting the [1] will 
> still work, some
> processors might give you a warning. In XPath 2.0 we say that 
> supplying a
> sequence where a singleton is expected is a type exception, 
> from which an
> XSLT processor should recover by taking the first item in the 
> sequence: but
> as with conditions like having conflicting template rules, we 
> don't say the
> processor can't produce a warning first.

<grin/> So Jeni, perhaps we could say Mike was (sorta) wrong,
even if he wasn't, really (When else do we get such a chance?) :-)

I'll stick with leaving the predicate in.
Good advice Mike.

Regards DaveP.



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