Subject: Re: [xsl] xsl:key on variable containing result of apply-templates From: Joerg Heinicke <joerg.heinicke@xxxxxx> Date: Mon, 25 Nov 2002 00:36:13 +0100 |
<xsl:variable name="alphabet-NodeSet" select="document('')/xsl:stylesheet/xsl:variable[@name='alphabet']"
<xsl:variable name="alphabet"> <xsl:apply-templates select="/test/alphabetList/alphabet" mode="loadList"/> </xsl:variable>
<alphabet col="1">a</alphabet> <alphabet col="2">b</alphabet> <alphabet col="3">c</alphabet> <alphabet col="4">d</alphabet> <alphabet col="5">e</alphabet>
<xsl:template match="numbers"> <xsl:for-each select="number"> <xsl:variable name="curPosition" select="position()"/> <xsl:for-each select="$alphabet-exslNodeSet"> <!-- context changed to converted node set --> <xsl:copy-of select="key('myKey', $curPosition)"/> </xsl:for-each> </xsl:for-each> </xsl:template>
<xsl:template match="/"> <xsl:apply-templates select="test/numbers"/> </xsl:template>
<alphabet col="1">a</alphabet> <alphabet col="2">b</alphabet> <alphabet col="3">c</alphabet> <alphabet col="4">d</alphabet> <alphabet col="5">e</alphabet>
<xsl:template match="numbers"> <xsl:for-each select="number"> <xsl:copy-of select="key('myKey', position())"/> </xsl:for-each> </xsl:template>
Hello,
This is my first post to this list and I apologize for it's length. My question basically is whether it is possible to create a key on a variable which contains the result of applying a template? In my real stylesheet and xml the template which creates the node-set I would like to create the key on is much more complicated than the example I have given below - but the concept is the same. I apply-templates to the source document and the result tree fragment is kept in a variable ($alphabet). I convert this to a node-set ($alphabet-exslNodeSet) and then use that node-set in another template. It works but is pretty slow - I think it would be much faster if I were able to create a key on the node-set (each item in the node set is used multiple times). I can't see how to do that - it looks like my attempt below gives me the code in the variable, not the result. I know I can't use a variable in the key's match attribute, so I'm at a loss how to do this.
Thanks for any suggestions,
Grainne.
The Stylesheet:
============
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:saxon="http://icl.com/saxon" xmlns:exsl="http://exslt.org/common"
exclude-result-prefixes="ss"
extension-element-prefixes="exsl saxon">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:variable name="alphabet">
<xsl:apply-templates select="/test/alphabetList/alphabet" mode="loadList"/>
</xsl:variable>
<xsl:variable name="alphabet-NodeSet" select="document('')/xsl:stylesheet/xsl:variable[@name='alphabet']" />
<xsl:variable name="alphabet-exslNodeSet" select="exsl:node-set($alphabet)"/>
<xsl:key name="myKey" match="/*/xsl:variable[@name='alphabet']" use="@col"/>
<xsl:template match="alphabet" mode="loadList"> <xsl:copy-of select="."/> </xsl:template>
<xsl:template match="*"/>
<xsl:template match="/">
Value of alphabet variable is:<xsl:text>
</xsl:text> <xsl:copy-of select="$alphabet"/><xsl:text>
</xsl:text>
Value of alphabet-NodeSet varaible is (I think this is what I get in the key!!)<xsl:text>
</xsl:text><xsl:copy-of select="$alphabet-NodeSet"/><xsl:text>
</xsl:text>
Value of alphabet-exslNodeSet variable is <xsl:text>
</xsl:text><xsl:copy-of select="$alphabet-exslNodeSet"/> <xsl:text>
</xsl:text>
<xsl:apply-templates select="test/numbers"/> </xsl:template>
<xsl:template match="numbers">
<xsl:for-each select="number">
<xsl:variable name="curPosition" select="position()"/>
Using the key to get the alphabet element (THIS is what I'd like to do since each node in the set is used multiple times):
<number value="{.}">
<xsl:for-each select="document('')">
<xsl:copy-of select="key('myKey',$curPosition)"/>
</xsl:for-each>
</number>
Using the exslNodeSet variable to get the alphabet element (what I am doing but which is very slow in my real code):
<number value="{.}">
<xsl:copy-of select="$alphabet-exslNodeSet/alphabet[@col=$curPosition]"/>
</number>
<xsl:text>
</xsl:text> </xsl:for-each> </xsl:template> </xsl:stylesheet>
Example xml: ========== <?xml version="1.0" encoding="UTF-8"?> <test> <alphabetList> <alphabet col="1">a</alphabet> <alphabet col="2">b</alphabet> <alphabet col="3">c</alphabet> <alphabet col="4">d</alphabet> <alphabet col="5">e</alphabet> </alphabetList> <numbers> <number>one</number> <number>two</number> <number>three</number> <number>four</number> <number>five</number> </numbers> </test>
Result (tidied up a little):
====================
<?xml version="1.0" encoding="UTF-8"?>
Value of alphabet variable is:
<alphabet col="1">a</alphabet>
<alphabet col="2">b</alphabet>
<alphabet col="3">c</alphabet>
<alphabet col="4">d</alphabet>
<alphabet col="5">e</alphabet>
Value of alphabet-NodeSet varaible is (I think this is what I get in the key!!)
<xsl:variable xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:saxon="http://icl.com/saxon" xmlns:exsl="http://exslt.org/common" name="alphabet"> <xsl:apply-templates select="/test/alphabetList/alphabet" mode="loadList"/>
</xsl:variable>
Value of alphabet-exslNodeSet variable is
<alphabet col="1">a</alphabet>
<alphabet col="2">b</alphabet>
<alphabet col="3">c</alphabet>
<alphabet col="4">d</alphabet>
<alphabet col="5">e</alphabet>
Using the key to get the alphabet element (THIS is what I'd like to do since each node in the set is used multiple times):
<number value="one"/>
Using the exslNodeSet variable to get the alphabet element (what I am doing but which is very slow in my real code):
<number value="one">
<alphabet col="1">a</alphabet>
</number>
...<snip>... Using the key to get the alphabet element (THIS is what I'd like to do since each node in the set is used multiple times):
<number value="five"/>
Using the exslNodeSet variable to get the alphabet element (what I am doing but which is very slow in my real code):
<number value="five">
<alphabet col="5">e</alphabet>
</number>
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