Subject: [xsl] How to iterate over the output of distinct-values()? From: cknell@xxxxxxxxxx Date: Tue, 06 Jun 2006 12:55:49 -0400 |
I have a document that consists of elements like this. <ROW> <CONTRACTOR></CONTRACTOR> <CASE_NO></CASE_NO> <SCHD_DATE></SCHD_DATE> <VERBAL></VERBAL> <COMPLT></COMPLT> <DOE_DTE></DOE_DTE> </ROW> While there are a few thousand rows, there are only a few distinct values for CONTRACTOR. I am working on a stylesheet that will perform various counts of data in these elements. I thought I would get the distinct values for CONTRACTOR with the distinct-values() function and the supply each distinct value as a parameter to an xsl:call-template, like this: <xsl:for-each select="distinct-values(ROWSET/ROW/CONTRACTOR)"> <xsl:sort select="." /> <xsl:call-template name="contractor-row"> <xsl:with-param name="contractor" select="." /> </xsl:call-template> </xsl:for-each> The context node where this is done is "/" and ROWSET in the root element. When the xsl:call-template is executed, Saxon gives this error: "XPTY0020: Finding root of tree: the context item is not a node" Here is the relevant part of the called template: <xsl:template name="contractor-row"> <xsl:param name="contractor" /> <tr height="17" style='height:12.75pt'> <td height="17" class="xl28" style='height:12.75pt;border-top:none'> <xsl:value-of select="$contractor" /> </td> <td class="xl26" align="right" style='border-top:none;border-left:none' x:num=""> <xsl:value-of select="count(/ROWSET/ROW[CONTRACTOR='$contractor'])" /> </td> ... more template here ... </xsl:template> The processor emits this error message when evaluating count(/ROWSET/ROW[CONTRACTOR='$contractor']) Now if I change the argument to the count() function to read: count(document('path-to-xml-file')/ROWSET/ROW[CONTRACTOR='$contractor']) The error goes away. It also returns a value of '0' (zero) for every call of the function. Can anyone shed light on any part of this (to me, at least) puzzle? Thanks. -- Charles Knell cknell@xxxxxxxxxx - email
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