duplication in xslt preceeding-sibling - xslt

Question

i've the below xml document.
<toc-div>
<toc-item>
<toc-title>CHAPTER 1 INTRODUCTION</toc-title>
<toc-subitem num="1.">
<toc-title>The British Virgin Islands</toc-title>
<toc-pg>1.001</toc-pg>
</toc-subitem>
<toc-subitem num="2.">
<toc-title>History and early constitutional developments</toc-title>
<toc-pg>1.003</toc-pg>
</toc-subitem>
<toc-subitem num="3.">
<toc-title>Development as a financial centre</toc-title>
<toc-pg>1.008</toc-pg>
</toc-subitem>
<toc-subitem num="4.">
<toc-title>Common Law and Equity</toc-title>
<toc-pg>1.015</toc-pg>
</toc-subitem>
<toc-subitem num="5.">
<toc-title>Statutes</toc-title>
<toc-pg>1.017</toc-pg>
</toc-subitem>
<toc-subitem num="6.">
<toc-title>Taxation</toc-title>
<toc-pg>1.022</toc-pg>
</toc-subitem>
</toc-item>
and i'm applying the below xslt.
<xsl:template match="toc-subitem">
<table>
<td>
<xsl:value-of select="preceding-sibling::toc-title[1]"/>
</td></table>
<xsl:variable name="tocpg">
<xsl:value-of select="current()/toc-pg"/></xsl:variable>
<xsl:variable name="abc">
<xsl:choose>
<xsl:when test="not(contains(#num, '('))">
<xsl:value-of select="1"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="2"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:variable name="before">
<xsl:value-of select="normalize-space(substring-before($tocpg, '.'))"/>
</xsl:variable>
<xsl:variable name="after">
<xsl:value-of select="normalize-space(substring-after($tocpg, '.'))"/>
</xsl:variable>
<xsl:variable name="z">
<xsl:value-of select="current()/#num"/>
</xsl:variable>
<xsl:variable name="tocpgtag" select="translate($tocpg,'.', '-')"/>
<xsl:variable name="numa" select="number(translate(#num, '.', ''))" />
<xsl:variable name="itemlevel">
<xsl:value-of select="$ThisDocument//ntw:nums[#num=$abc]/#word"/>
</xsl:variable>
<xsl:variable name="tocitemlevel">
<xsl:value-of select="concat('toc-item-', $itemlevel,'-level')"/>
</xsl:variable>
<xsl:variable name="conc">
<xsl:value-of select="concat('er:#BVI_CH_0',$before, '/P', normalize-space($tocpgtag))"/>
</xsl:variable>
<table class="{$tocitemlevel}">
<tbody>
<tr>
<td class="toc-subitem-num">
<xsl:value-of select="$z" />
</td>
<td class="toc-title">
<xsl:value-of select="current()/toc-title" />
</td>
<td class="toc-pg">
<a href="{$conc}">
<xsl:value-of select="current()/toc-pg" />
</a>
</td>
</tr>
</tbody>
</table>
</xsl:template>
when i'm applying this template, the output i'm getting is as below.
<table>
<td>CHAPTER 1 INTRODUCTION</td>
</table>
<table class="toc-item--level">
<tbody>
<tr>
<td class="toc-subitem-num">1.</td>
<td class="toc-title">The British Virgin Islands</td>
<td class="toc-pg">1.001</td>
</tr>
</tbody>
</table>
<table>
<td>CHAPTER 1 INTRODUCTION</td>
</table>
<table class="toc-item--level">
<tbody>
<tr>
<td class="toc-subitem-num">2.</td>
<td class="toc-title">History and early constitutional developments</td>
<td class="toc-pg">1.003</td>
</tr>
</tbody>
</table>
<table>
<td>CHAPTER 1 INTRODUCTION</td>
</table>
<table class="toc-item--level">
<tbody>
<tr>
<td class="toc-subitem-num">3.</td>
<td class="toc-title">Development as a financial centre</td>
<td class="toc-pg">1.008</td>
</tr>
</tbody>
</table>
<table>
<td>CHAPTER 1 INTRODUCTION</td>
</table>
<table class="toc-item--level">
<tbody>
<tr>
<td class="toc-subitem-num">4.</td>
<td class="toc-title">Common Law and Equity</td>
<td class="toc-pg">1.015</td>
</tr>
</tbody>
</table>
<table>
<td>CHAPTER 1 INTRODUCTION</td>
</table>
<table class="toc-item--level">
<tbody>
<tr>
<td class="toc-subitem-num">5.</td>
<td class="toc-title">Statutes</td>
<td class="toc-pg">1.017</td>
</tr>
</tbody>
</table>
<table>
<td>CHAPTER 1 INTRODUCTION</td>
</table>
<table class="toc-item--level">
<tbody>
<tr>
<td class="toc-subitem-num">6.</td>
<td class="toc-title">Taxation</td>
<td class="toc-pg">1.022</td>
</tr>
</tbody>
</table>
but i want to get it as below
<table>
<td>CHAPTER 1 INTRODUCTION</td>
</table>
<table class="toc-item--level">
<tbody>
<tr>
<td class="toc-subitem-num">1.</td>
<td class="toc-title">The British Virgin Islands</td>
<td class="toc-pg">1.001</td>
</tr>
</tbody>
</table>
<table class="toc-item--level">
<tbody>
<tr>
<td class="toc-subitem-num">2.</td>
<td class="toc-title">History and early constitutional developments</td>
<td class="toc-pg">1.003</td>
</tr>
</tbody>
</table>
<table class="toc-item--level">
<tbody>
<tr>
<td class="toc-subitem-num">3.</td>
<td class="toc-title">Development as a financial centre</td>
<td class="toc-pg">1.008</td>
</tr>
</tbody>
</table>
<table class="toc-item--level">
<tbody>
<tr>
<td class="toc-subitem-num">4.</td>
<td class="toc-title">Common Law and Equity</td>
<td class="toc-pg">1.015</td>
</tr>
</tbody>
</table>
<table class="toc-item--level">
<tbody>
<tr>
<td class="toc-subitem-num">5.</td>
<td class="toc-title">Statutes</td>
<td class="toc-pg">1.017</td>
</tr>
</tbody>
</table>
<table class="toc-item--level">
<tbody>
<tr>
<td class="toc-subitem-num">6.</td>
<td class="toc-title">Taxation</td>
<td class="toc-pg">1.022</td>
</tr>
</tbody>
</table>
please let me know where I'm going wrong.
Thanks

Answer 1

Note:
Your title table is not valid - it does not have <tr>.
The reason your XSLT gave you duplicate toc-title was that you printed it for every toc-subitem processed. In the solution below it is printed only once.
Make the following change to your XSLT:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0">
<xsl:output method="xml" indent="yes" omit-xml-declaration="yes" />
<xsl:template match="//toc-item">
<table>
<td>
<!-- Print the title *once* -->
<xsl:value-of select="./toc-title"/>
</td>
</table>
<!-- Process each subitem -->
<xsl:apply-templates select="toc-subitem"/>
</xsl:template>
<xsl:template match="toc-subitem">
<!-- Removed the <table> with the preceding sibling -->
<xsl:variable name="tocpg">
<xsl:value-of select="current()/toc-pg"/></xsl:variable>
<!-- Put the rest of your XSLT here, no changes there -->
</xsl:template>
</xsl:stylesheet>

Answer 2

You should use separate templates for this (I also cleaned up a bunch of the <xsl:variable>s):
<xsl:template match="toc-title">
<table>
<tr>
<td>
<xsl:value-of select="preceding-sibling::toc-title[1]"/>
</td>
</tr>
</table>
</xsl:template>
<xsl:template match="toc-subitem">
<xsl:variable name="tocpg" select="toc-pg" />
<xsl:variable name="abc" select="1 + contains(#num, '(')" />
<xsl:variable name="before"
select="normalize-space(substring-before($tocpg, '.'))"/>
<xsl:variable name="after"
select="normalize-space(substring-after($tocpg, '.'))"/>
<xsl:variable name="z" select="#num"/>
<xsl:variable name="tocpgtag" select="translate($tocpg,'.', '-')"/>
<xsl:variable name="numa" select="number(translate(#num, '.', ''))" />
<xsl:variable name="itemlevel"
select="$ThisDocument//ntw:nums[#num=$abc]/#word"/>
<xsl:variable name="tocitemlevel"
select="concat('toc-item-', $itemlevel,'-level')"/>
<xsl:variable name="conc"
select="concat('er:#BVI_CH_0',$before, '/P',
normalize-space($tocpgtag))"/>
<table class="{$tocitemlevel}">
<tbody>
<tr>
<td class="toc-subitem-num">
<xsl:value-of select="$z" />
</td>
<td class="toc-title">
<xsl:value-of select="toc-title" />
</td>
<td class="toc-pg">
<a href="{$conc}">
<xsl:value-of select="toc-pg" />
</a>
</td>
</tr>
</tbody>
</table>
</xsl:template>
However, I think putting every row in its own table is not a very good design. Why have you chosen to do that?

Answer 3

I don't really understand why you'd want output like that (<td> is not a valid child of <table>, for example, in HTML), but this stylesheet should get you closer (I rewrote the stylesheet to split your code into separate <xsl:template> elements):
Stylesheet
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="html" encoding="utf-8" indent="yes"/>
<xsl:template match="/">
<html>
<body>
<table>
<xsl:apply-templates/>
</table>
</body>
</html>
</xsl:template>
<xsl:template match="toc-item/toc-title">
<td><xsl:value-of select="."/></td>
</xsl:template>
<xsl:template match="toc-subitem">
<!--
I don't know how your code that fetches the TOC item level is supposed
to work so you'll have to figure that out yourself.
-->
<table class="toc-item-$level-level">
<tbody>
<tr>
<xsl:apply-templates select="#* | node()"/>
</tr>
</tbody>
</table>
</xsl:template>
<xsl:template match="#num">
<td class="toc-subitem-num">
<xsl:value-of select="."/>
</td>
</xsl:template>
<xsl:template match="toc-subitem/toc-title">
<td class="toc-title">
<xsl:value-of select="."/>
</td>
</xsl:template>
<xsl:template match="toc-pg">
<td class="toc-pg">
<a href="{concat('er:#BVI_CH_0', substring-before(., '.'), '/P', translate(., '.', '-'))}">
<xsl:value-of select="."/>
</a>
</td>
</xsl:template>
</xsl:stylesheet>
Input
<?xml version="1.0"?>
<toc-div>
<toc-item>
<toc-title>CHAPTER 1 INTRODUCTION</toc-title>
<toc-subitem num="1.">
<toc-title>The British Virgin Islands</toc-title>
<toc-pg>1.001</toc-pg>
</toc-subitem>
<toc-subitem num="2.">
<toc-title>History and early constitutional developments</toc-title>
<toc-pg>1.003</toc-pg>
</toc-subitem>
<toc-subitem num="3.">
<toc-title>Development as a financial centre</toc-title>
<toc-pg>1.008</toc-pg>
</toc-subitem>
<toc-subitem num="4.">
<toc-title>Common Law and Equity</toc-title>
<toc-pg>1.015</toc-pg>
</toc-subitem>
<toc-subitem num="5.">
<toc-title>Statutes</toc-title>
<toc-pg>1.017</toc-pg>
</toc-subitem>
<toc-subitem num="6.">
<toc-title>Taxation</toc-title>
<toc-pg>1.022</toc-pg>
</toc-subitem>
</toc-item>
</toc-div>
Output
<html>
<body>
<table>
<td>CHAPTER 1 INTRODUCTION</td>
<table class="toc-item-$level-level">
<tbody>
<tr>
<td class="toc-subitem-num">1.</td>
<td class="toc-title">The British Virgin Islands</td>
<td class="toc-pg">
1.001
</td>
</tr>
</tbody>
</table>
<table class="toc-item-$level-level">
<tbody>
<tr>
<td class="toc-subitem-num">2.</td>
<td class="toc-title">History and early constitutional developments</td>
<td class="toc-pg">
1.003
</td>
</tr>
</tbody>
</table>
<table class="toc-item-$level-level">
<tbody>
<tr>
<td class="toc-subitem-num">3.</td>
<td class="toc-title">Development as a financial centre</td>
<td class="toc-pg">
1.008
</td>
</tr>
</tbody>
</table>
<table class="toc-item-$level-level">
<tbody>
<tr>
<td class="toc-subitem-num">4.</td>
<td class="toc-title">Common Law and Equity</td>
<td class="toc-pg">
1.015
</td>
</tr>
</tbody>
</table>
<table class="toc-item-$level-level">
<tbody>
<tr>
<td class="toc-subitem-num">5.</td>
<td class="toc-title">Statutes</td>
<td class="toc-pg">
1.017
</td>
</tr>
</tbody>
</table>
<table class="toc-item-$level-level">
<tbody>
<tr>
<td class="toc-subitem-num">6.</td>
<td class="toc-title">Taxation</td>
<td class="toc-pg">
1.022
</td>
</tr>
</tbody>
</table>
</table>
</body>
</html>
Just remove the <html> and <body> elements from the first <xsl:template> rule if you really don't need them.