Jeni Tennison wrote:
Hi Edward,
Do keys have to be used within a context in which the associated
nodes exist?
Yes. The context node at the point where you use the key (with the
key() function) has to be a node in the document that you're
searching.
Usually this means that you should create a variable to hold the key
value that you want to search for, then switch into the context of the
document that you want to search in (using <xsl:for-each>) before
using the key.
I can't tell precisely what's going to work with your code, but
something like:
<xsl:key name="PageKey" match="/gnsl:Results/gnsl:Table/gnsl:Row"
use="((count(preceding-sibling::*) div $RowsPerPage) + 1)" />
<xsl:variable name="results" select="/" />
<xsl:template name="ProcessPageRows">
<xsl:variable name="PageNum" select="@PageNum" />
<xsl:variable name="StartRow" select="@StartRow" />
<xsl:variable name="EndRow" select="@EndRow" />
<xsl:if test="$NumberOfRows">
<xsl:for-each select="$results">
<xsl:apply-templates select="key('PageKey',$PageNum)" />
</xsl:for-each>
</xsl:if>
</xsl:template>
You need to set the $results variable to being a node set containing a
single node in the document in which the gnsl:Row elements that you're
interested in are held.
Jeni Tennison
http://www.jenitennison.com/
Worked, have to do the performance test to see what I gained. Had to
adjust the syntax a bit; (forcing the key to be an integer helped a
bunch):
<xsl:key name="PageKey" match="/gnsl:Results/gnsl:Table/gnsl:Row"
use="floor(count(preceding-sibling::gnsl:Row) div $RowsPerPage)
+ 1" />
<xsl:variable name="Results" select="/" />
<xsl:template name="ProcessPageRows">
<xsl:variable name="PageNum" select="@PageNum" />
<xsl:if test="$NumberOfRows">
<xsl:for-each select="$Results">
<xsl:for-each select="key('PageKey',$PageNum)">
<xsl:apply-templates select="." />
</xsl:for-each>
</xsl:for-each>
</xsl:if>
</xsl:template>
Thanks for the help,
Ed
--
Edward L. Knoll Phone (work) : (719)484-2717
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