Re: [xsl] mixed content grouping by whitespace

[David Carlisle <davidc@xxxxxxxxx>]

On 13/04/2010 16:47, Wendell Piez wrote:
> Hi,

> It's really helpful to keep this distinction in mind. One sort of
> grouping works with a key; @group-by or @group-adjacent calculates that
> key. The other sort simply applies a match criterion to each node in the
> group to determine whether it's the particular sort of node
> (group-starting or group-ending) of interest for that sort of grouping.

Is it just me?
this is one of the few distinctions in xslt for which I can never find a 
mental model (so I can never remember) I always have to look this up (or 
more exactly I don't look it up and get it wrong half the time).
the use of match expression sseem completely arbitrary, Why didn't they 
always make them xpath expressions?  It would mean you had to use
self::h1 instead of h1 to trigger grouping on an h1 element, but it 
would seem to be a lot more consistent and more powerful as the match 
versions of grouping are restricted to nodes, so you can't for example 
group a sequence of integers with group-starting with specifying some 
condition on integers...

David
rant not particular;y aimed at Wendell:-)





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