You can rewrite this:
<xsl:for-each select="data">
<xsl:variable name="date" select="@name"/>
<xsl:if test="$date >= $startDate and $date <= $endDate">
<xsl:value-of select="$date"/>
</xsl:if>
</xsl:for-each>
as this:
<xsl:for-each select="data[(_at_)name >= $startDate and @name <=
$endDate]">
<xsl:value-of select="@name"/>
</xsl:for-each>
or as
<xsl:apply-templates select="data[(_at_)name >= $startDate and @name
<=
$endDate]"/>
<xsl:template match="data">
<xsl:value-of select="@name"/>
</xsl:template>
or even as
<xsl:apply-templates select="data"/>
<xsl:template match="data[(_at_)name >= $startDate and @name <=
$endDate]">
<xsl:value-of select="@name"/>
</xsl:template>
(but this last one can't be used with a conformant 1.0 processor - variables
are not allowed in a match pattern).
Don't expect any significant differences in performance (it might be that
one processor does one of these better than the others, but another
processor might do the opposite).
I am trying to use xsl:for-each-group
method for the first time in an XSL and tried running it
using Xalan
Xalan is an XSLT 1.0 processor. You need a 2.0 processor such as Saxon.
Michael Kay
http://www.saxonica.com/
-----Original Message-----
From: Bhaskar Venkateswaran [mailto:bhaskarji(_at_)hotmail(_dot_)com]
Sent: 12 June 2007 12:07
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] How to select specific nodes using
xsl:template match or similar?
Hi,
I tried posting twice before but couldn't get the code
inserted - sorry about that.
Here's is a snippet of an XML I have:
<?xml version="1.0"?>
<rep>
<data name = "20050102">
<data name = "AAA">
</data>
<data name = "BBB">
</data>
</data>
<data name = "20050103">
<data name = "AAA">
</data>
</data>
<data name = "20050104">
<data name = "BBB">
</data>
<data name = "CCC">
</data>
</data>
</rep>
My objective is to choose all first-level data nodes (i.e,
nodes with names 20050102, 20050103 & 20050104 above) within
a specified range of dates. In other words, what is the best
way to, say, choose only the nodes whose name-value is
between 20050102 and 20050103 (both inclusive). I want to be
able to choose such nodes at the top-level WITHOUT using a
for-each loop.
That is, I don't want to do something like this because here
I am running through all nodes that meet my condition as
opposed to just selecting all such nodes in one query:
<xsl:variable name="startDate">20050102</xsl:param>
<xsl:variable name="endDate">20050103</xsl:param>
<xsl:template match="rep">
<xsl:for-each select="data">
<xsl:variable name="date" select="@name"/>
<xsl:if test="$date >= $startDate and $date <= $endDate">
<xsl:value-of select="$date"/>
</xsl:if>
</xsl:for-each>
</xsl:template>
Hope I am clear. Any help/idea is much appreciated.
Another question: I am trying to use xsl:for-each-group
method for the first time in an XSL and tried running it
using Xalan (C version 1.10.0) with Xerces (C version 2.7.0)
but I get the following warning:
XSLT Warning: The element xsl:for-each-group is an unknown
XSLT element.
(sample.xsl, line 34, column 71.)
Does it mean I need to upgrade?
Thanks,
Bhaskar
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