Re: [xsl] Interpretaion of grouping for-each

["james walker" <jameswalkerandy@xxxxxxxxxxx>]

What does count() =1 represent (got a bit confused about jeni's explanation)
"and
> count(. | .....) =1
> id the currently selected viewdata is that first element.
> so
"
Just to be clear, am i right in saying that "viewentry{key('ve-by-firstocc', 
substring(entrydata[3]/text,1,1))[1]]" selects the first of each group of 
viewentries with the same key (including groups which only have one 
viewentry in it)?


> From: David Carlisle <davidc@xxxxxxxxx>
> Reply-To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: Re: [xsl] Interpretaion of grouping for-each
> Date: Mon, 3 Nov 2003 17:02:29 GMT
>
> > Does it go through viewentries which have dont have repeat key values?
>
> No it selects the first (in document order) viewentry with each key
> value (even if that key value is not repeated).
>
> See any description of muenchian grouping, eg Jeni's site.
>
> <xsl:for-each select="viewentry
> that selects all viewentries then
> key('ve-by-firstocc', substring(entrydata[3]/text,1,1))
> selects al the entries with the same key,
> so
> key('ve-by-firstocc', substring(entrydata[3]/text,1,1))[1]
> selects the first of that group
> and
> count(. | .....) =1
> id the currently selected viewdata is that first element.
> so
> viewentry[....]
> just selects the first entry in each group as teh predicate is false in
> other case.
>
> David
>
> --
> http://www.dcarlisle.demon.co.uk/matthew
>
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