The key() function finds nodes within the current document (the document
containing the context node). Within xsl:for-each select="xx:node-set()",
the current document is the result tree fragment itself. I suspect you are
looking for nodes in the original source document.

Michael Kay
Software AG
home: Michael.H.Kay@xxxxxxxxxxxx
work: Michael.Kay@xxxxxxxxxxxxxx

> -----Original Message-----
> From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> [mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx]On Behalf Of
> Macaulay,Malcolm (US)
> Sent: 15 March 2002 05:34
> To: XSL-List@xxxxxxxxxxxxxxxxxxxxxx
> Subject:  Key function using key strings from msxsl:node-set
> generated node. Doesn't work?
>
>
> I have a baffling problem. I'm trying to call the key
> function using strings extracted from nodes coming from the
> msxsl:node-set function. No matter what I try (i.e.
> normalize-space etc) I can't get the same string from
> msxsl:node-set as I do from the raw XML.
>
> There's a good reason why I don't want to use the Muenchian
> method (which works fine). But I won't bore you with that.
> I've created a simple example which illustrates the point.
> Any help would be greatly appreciated.
>
> cheers
>
> Malcolm
>
>
> <?xml version="1.0" encoding="UTF-8"?>
>
> <?xml-stylesheet type="text/xsl" href="Table from keys.xsl"?>
> <People>
> 	<Person>
> 		<Name>Malcolm</Name>
> 		<Address>
> 			<No>10</No>
> 			<Street>Lime Close</Street>
> 		</Address>
> 	</Person>
> 	<Person>
> 		<Name>Peter</Name>
> 		<Address>
> 			<No>20</No>
> 			<Street>Milner Rd</Street>
> 		</Address>
> 	</Person>
> 	<Person>
> 		<Name>Mary</Name>
> 		<Address>
> 			<No>20</No>
> 			<Street>Milner Rd</Street>
> 		</Address>
> 	</Person>
> 	<Person>
> 		<Name>John</Name>
> 		<Address>
> 			<No>20</No>
> 			<Street>Milner Rd</Street>
> 		</Address>
> 	</Person>
> </People>
>
>
> <?xml version="1.0" encoding="UTF-8"?>
> <xsl:stylesheet version="1.0"
> xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
> xmlns:msxsl="urn:schemas-microsoft-com:xslt">
> 	<xsl:preserve-space elements="*"/>
> 	<!--
>
> 	key giving Person by the raw address string-->
> 	<xsl:key name="PersonByAddress" match="/People/Person"
> use="Address"/>
> 	<!--
>
> 	Address string key so unqiue addresses can a extracted
> by Muenchian method-->
> 	<xsl:key name="Address" match="/People/Person/Address" use="."/>
> 	<!--
>
> 	Alternative to Muenchian method - a ready-made list of
> the unique addresses-->
> 	<xsl:variable name="UniqueAddressStrings">
> 		<Address>
> 			<No> 10</No>
> 			<Street>Lime Close</Street>
> 		</Address>
> 		<Address>
> 			<No> 20</No>
> 			<Street>Milner Rd</Street>
> 		</Address>
> 	</xsl:variable>
> 	<!--
>
> 	-->
> 	<xsl:template match="/">
> 		<!--
>
> 		-->
> 		<p>Works: Table contents keyed by unique
> address strings, determined on-the-fly by Muenchian method</p>
> 		<!--
>
> 		 -->
> 		<table border="1" cellspacing="0">
> 			<tr>
> 				<td>Address</td>
> 				<td>No. of people</td>
> 			</tr>
> 			<xsl:for-each
> select="/People/Person/Address[generate-id(.)=generate-id(key(
> 'Address',.)[1])]">
> 				<xsl:sort select="."/>
> 				<tr>
> 					<td>
> 						<xsl:value-of
> select="."/>
> 					</td>
> 					<td>
> 						<xsl:value-of
> select="count(key('PersonByAddress',.))"/>
> 					</td>
> 				</tr>
> 			</xsl:for-each>
> 		</table>
> 		<!--
>
> 		-->
> 		<p>Doesn't work: Table contents keyed by unique
> address strings, extracted from a unique list of address
> included in the XSLT. Requires msxsl:node-set, but cannot get
> the same string nodes created by node-set function.
> Normalize-space does not seem to help.</p>
> 		<!--
>
> 		 -->
> 		<table border="1" cellspacing="0">
> 			<tr>
> 				<td>Address</td>
> 				<td>No. of people</td>
> 			</tr>
> 			<xsl:for-each
> select="msxsl:node-set($UniqueAddressStrings)/Address">
> 				<xsl:sort select="."/>
> 				<tr>
> 					<td>
> 						<xsl:value-of
> select="normalize-space(.)"/>
> 					</td>
> 					<td>
> 						<xsl:value-of
> select="count(key('PersonByAddress',normalize-space(.)))"/>
> 					</td>
> 				</tr>
> 			</xsl:for-each>
> 		</table>
> 	</xsl:template>
> </xsl:stylesheet>
>
>
>
>
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>


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