Re: [xsl] grouping/position problem

[Bruce D'Arcus <bdarcus@xxxxxxxxx>]

On Apr 24, 2005, at 1:11 PM, Michael Kay wrote:

> If the items to be grouped are already sorted on the grouping key, then
> group-by and group-adjacent will produce the same result, but 
> group-adjacent
> may be more efficient because each group can be processed sequentially 
> as it
> is encountered, rather than having to build all the groups in memory 
> before
> processing starts.

OK, thanks for the explanation.

Another question as I'm transferring the example template into my code:

I'm getting a complaint about my use of a function for the grouping 
here:

<xsl:for-each-group select="$bibrefs-for-author-sorted-by-year" 
group-adjacent="bib:year(.)">

F XPath syntax error at char 1 on line 32 in {$current-grouping-key()}:
    expected "<name>", found "<function>("

Is this my bug, or Saxon's?  I'm using an earlier version bundled with 
Oxygen.

If the former, how do I workaround it?  Store the result of the 
bib:year() function somehow?

Bruce