[xsl] Re: Key and/or grouping questions.

["Edward L. Knoll" <ed.knoll@xxxxxxxxxxxxxx>]

"Edward L. Knoll" wrote:
> 
> I have a set of style sheets which have a sever performance problem.
> Distilled (hopefully not diluted past usefulness), I am processing a
> large set of sibling elements a few elements at a time.   I believe the
> problem is with the following statement (which I've changed/condensed
> the expression of):
> 
> <xsl:for-each  select="/elements[ (position() &gt;= $Start) and
> (position() &lt;= $End) ]">
> ...
> </xsl:for-each>
> 
> I was referred to a FAQ on grouping and this led me to attempt to setup
> some kind of solution utilizing keys.   Unfortunately, the XSL reference
> I have has no information on <xsl:key> and my favorite FAQ has a list of
> topics under keys with no corresponding content.  Anyway, my
> XSL processor (Xalan) doesn't like my key definition.  Is the
> "use" parameter limited from being a numerical expressions?
> 
> <xsl:key name="PageKey" match="/gnsl:Results/gnsl:Table/gnsl:Row"
>          use="((position() - 1) / $RowsPerPage) + 1)" />

Sorry, saw part of the problem as soon as a hit send: ' / ' instead of '
div '.  I've been working across too many different contexts and need
compilers to tell me when I'm mixing language syntax.

Now it's taking my key definition, but when I try to reference the key
to get the associated elements, I seem to be coming up with an empty
list.  I'll keep pluggin and see if I can figure it out.

Ed Knoll

-- 
Edward L. Knoll   Phone (work)     : (719)484-2717
                  e-mail (work)    : ed.knoll@xxxxxxxxxxxxxx
                  e-mail (business): eknoll@xxxxxxxxxx
                  e-mail (personal): edward@xxxxxxxxxxx

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