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Topic

Dan Wonacott

Subject: HTML tables from sorted XSL
Author: Dan Wonacott
Date: 28 Nov 2007 08:41 PM

Hi,
I'm trying to create a two-dimensional table where each cell is filled according to XML node data which are sorted. This is something we commonly require and have yet to find a solution.
The only solution I can come up with cheats by using CDATA sections to open and close the table rows which, although totally effective, I don't believe is using XSL appropriately and I'd like to find a better solution. The XML and XSL should explain the problem more clearly:

The XML:
<document>
<test>
<value>G</value>
</test>
<test>
<value>A</value>
</test>
<test>
<value>D</value>
</test>
<test>
<value>C</value>
</test>
<test>
<value>F</value>
</test>
<test>
<value>B</value>
</test>
<test>
<value>E</value>
</test>
</document>

The XSL:
<xsl:template match="/">
<table>
<xsl:apply-templates select="/document/test" mode="makeCell">
<xsl:sort select="value"/>
</xsl:apply-templates>
</table>
</xsl:template>

<xsl:template match="test" mode="makeCell">
<xsl:if test="position() mod 3 = 1">
<xsl:text disable-output-escaping="yes"><![CDATA[<tr>]]></xsl:text>
</xsl:if>
<td><xsl:value-of select="value"/></td>
<xsl:if test="position() mod 3 = 0 or position() = last()">
<xsl:text disable-output-escaping="yes"><![CDATA[</tr>]]></xsl:text>
</xsl:if>
</xsl:template>

The output:
<table>
<tr>
<td>A</td>
<td>B</td>
<td>C</td>
</tr>
<tr>
<td>D</td>
<td>E</td>
<td>F</td>
</tr>
<tr>
<td>G</td>
</tr>
</table>

If it wasn't for the sort I would use a following-sibling method as Michael Kay suggests in XSLT 2.0.

Any suggestions?

Thanks. Dan Wonacott

(Deleted User)

Subject: HTML tables from sorted XSL
Author: (Deleted User)
Date: 30 Nov 2007 04:44 AM

Hi dan,
maybe it's not the most efficient way of doing this, but this should work (unless you have duplicate values...):

<?xml version='1.0'?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="html"/>

<xsl:template match="/">
<table border="1">
<xsl:for-each select="/document/test">
<xsl:sort select="value"/>
<xsl:if test="position() mod 3 = 1">
<tr>
<xsl:call-template name="print3">
<xsl:with-param name="startAt" select="value/text()"/>
</xsl:call-template>
</tr>
</xsl:if>
</xsl:for-each>
</table>
</xsl:template>

<xsl:template name="print3">
<xsl:param name="startAt"/>
<xsl:for-each select="/document/test[value/text() >= string($startAt)]">
<xsl:sort select="value"/>
<xsl:if test="position() <= 3">
<td><xsl:value-of select="."/></td>
</xsl:if>
</xsl:for-each>
</xsl:template>

</xsl:stylesheet>

Hope this helps,
Alberto

Dan Wonacott

Subject: HTML tables from sorted XSL
Author: Dan Wonacott
Date: 02 Dec 2007 03:28 PM

Hi Alberto,

Thanks for your reply, it's an excellent solution. I was hoping there might be a way to do this without repeating the sort; I imagine this to be inefficient with large XML but I can't see there's an XSL alternative. Fortunately, the data I'm working with is pretty small so this will fit the bill perfectly. Thanks again!

Dan

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