I have the following document structure and I want to generate a table of contents which would fit to my XSLT transformation. I was trying many things but none of them worked for me. Could anybody help me with this?
With the following transformation I get this WARNING and empty page number in the place.
WARNING: Page 2: Unresolved id reference "N65898" found.
Document structure
<article>
<chapter>
<title>Chapter 1</title>
<para>chapter 1 text</para>
<sect1>
<title>Section1 1.1</title>
<para>text 1.1</para>
<sect2>
<title>Section2 1.1.1</title>
<para>text 1.1.1</para>
</sect2>
<sect2>
<title>Section2 1.1.2</title>
<para>text 1.1.2</para>
</sect2>
<sect2>
<title>Section2 1.1.3</title>
<para>text 1.1.3</para>
</sect2>
<sect2>
<title>Section2 1.1.4</title>
<para>text 1.1.4</para>
</sect2>
</sect1>
<sect1>
<title>Section1 1.2</title>
<sect2>
<title>Section2 1.2.1</title>
</sect2>
<sect2>
<title>Section2 1.2.2</title>
<sect3>
<title>Section3 1.2.2.1</title>
</sect3>
<sect3>
<title>Section3 1.2.2.2</title>
</sect3>
</sect2>
</sect1>
</chapter>
<chapter>
<title>Chapter 2</title>
<sect1>
<title>Section1 2.1</title>
<sect2>
<title>Section2 2.1.1</title>
</sect2>
<sect2>
<title>Section2 2.1.2</title>
<sect3>
<title>Section3 2.1.2.1</title>
</sect3>
<sect3>
<title>Section3 2.1.2.2</title>
</sect3>
</sect2>
</sect1>
<sect1>
<title>Section1 2.2</title>
<sect2>
<title>Section2 2.2.1</title>
</sect2>
<sect2>
<title>Section2 2.2.2</title>
<sect3>
<title>Section3 2.2.2.1</title>
</sect3>
<sect3>
<title>Section3 2.2.2.2</title>
</sect3>
</sect2>
</sect1>
</chapter>
<chapter>
<title>Chapter 3</title>
<sect1>
<title>Section1 3.1</title>
<sect2>
<title>Section2 3.1.1</title>
</sect2>
<sect2>
<title>Section2 3.1.2</title>
<sect3>
<title>Section3 3.1.2.1</title>
</sect3>
<sect3>
<title>Section3 3.1.2.2</title>
</sect3>
</sect2>
</sect1>
<sect1>
<title>Section1 3.2</title>
<sect2>
<title>Section2 3.2.1</title>
</sect2>
<sect2>
<title>Section2 3.2.2</title>
<sect3>
<title>Section3 3.2.2.1</title>
</sect3>
<sect3>
<title>Section3 3.2.2.2</title>
</sect3>
</sect2>
</sect1>
</chapter>
</article>
Transformation
<!-- table of contents -->
<fo:block break-before='page'>
<fo:block font-size="16pt" font-weight="bold">TABLE OF CONTENTS</fo:block>
<xsl:for-each select="//chapter">
<fo:block text-align-last="justify">
<fo:basic-link internal-destination="{generate-id(.)}">
<xsl:value-of select="count(preceding::chapter) + 1" />
<xsl:text> </xsl:text>
<xsl:value-of select="title" />
<fo:leader leader-pattern="dots" />
<fo:page-number-citation ref-id="{generate-id(.)}" />
</fo:basic-link>
</fo:block>
</xsl:for-each>
</fo:block>
This will only work if you output an ID when you are outputting <chapter>. The @ref-id in <fo:page-number-citation> needs something to point to.
See my answer here.
EDIT - Example of generated ID
Here's an example stylesheet. It will generate a PDF with a working TOC from your input XML. I tested with Saxon 6.5.5 and FOP.
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fo="http://www.w3.org/1999/XSL/Format">
<xsl:output indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:template match="node()|@*">
<xsl:apply-templates select="node()|@*"/>
</xsl:template>
<xsl:template match="/article">
<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format">
<fo:layout-master-set>
<fo:simple-page-master master-name="my-page" page-width="8.5in" page-height="11in">
<fo:region-body margin="1in" margin-top="1.5in"/>
</fo:simple-page-master>
</fo:layout-master-set>
<fo:page-sequence master-reference="my-page">
<fo:flow flow-name="xsl-region-body">
<xsl:call-template name="genTOC"/>
</fo:flow>
</fo:page-sequence>
<xsl:apply-templates/>
</fo:root>
</xsl:template>
<xsl:template name="genTOC">
<fo:block break-before='page'>
<fo:block font-size="16pt" font-weight="bold">TABLE OF CONTENTS</fo:block>
<xsl:for-each select="//chapter">
<fo:block text-align-last="justify">
<fo:basic-link internal-destination="{generate-id(.)}">
<xsl:value-of select="count(preceding::chapter) + 1" />
<xsl:text> </xsl:text>
<xsl:value-of select="title" />
<fo:leader leader-pattern="dots" />
<fo:page-number-citation ref-id="{generate-id(.)}" />
</fo:basic-link>
</fo:block>
</xsl:for-each>
</fo:block>
</xsl:template>
<xsl:template match="title|para">
<fo:block><xsl:value-of select="."/></fo:block>
</xsl:template>
<xsl:template match="chapter">
<fo:page-sequence master-reference="my-page" id="{generate-id(.)}">
<fo:flow flow-name="xsl-region-body">
<xsl:apply-templates/>
</fo:flow>
</fo:page-sequence>
</xsl:template>
</xsl:stylesheet>
EDIT 2023-07-27 - Noticed a deleted answer that was actually a question from 2014...
This is the best example I have found on the inet to create a toc. HOwever, this works for me, but can't figure out how to generate the sect1, sect2, etc headings in in toc with page numbers. tried repeating the fo:basic link code for section, but doesn't work. Please help. - Lori Boyters
Here's an updated XSLT 1.0 stylesheet that will also create TOC entries for sect1, sect2, and sect3.
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fo="http://www.w3.org/1999/XSL/Format">
<xsl:output indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="/article">
<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format">
<fo:layout-master-set>
<fo:simple-page-master master-name="my-page" page-width="8.5in" page-height="11in">
<fo:region-body margin="1in" margin-top="1.5in"/>
</fo:simple-page-master>
</fo:layout-master-set>
<fo:page-sequence master-reference="my-page">
<fo:flow flow-name="xsl-region-body">
<xsl:call-template name="genTOC"/>
</fo:flow>
</fo:page-sequence>
<xsl:apply-templates/>
</fo:root>
</xsl:template>
<xsl:template name="genTOC">
<fo:block break-before='page'>
<fo:block font-size="16pt" font-weight="bold" text-align="center">TABLE OF CONTENTS</fo:block>
<xsl:for-each select="//chapter|//sect1|//sect2|//sect3">
<fo:block text-align-last="justify" text-indent="{count(ancestor::chapter|ancestor::sect1|ancestor::sect2|ancestor::sect3) * 18}pt">
<fo:basic-link internal-destination="{generate-id(.)}">
<xsl:number count="chapter|sect1|sect2|sect3"
level="multiple" format="1.1.1.1."/>
<xsl:value-of select="concat(' ',title,' ')"/>
<fo:leader leader-pattern="dots" />
<fo:page-number-citation ref-id="{generate-id(.)}" />
</fo:basic-link>
</fo:block>
</xsl:for-each>
</fo:block>
</xsl:template>
<xsl:template match="title|para">
<fo:block><xsl:value-of select="."/></fo:block>
</xsl:template>
<xsl:template match="chapter">
<fo:page-sequence master-reference="my-page" id="{generate-id(.)}">
<fo:flow flow-name="xsl-region-body">
<xsl:apply-templates/>
</fo:flow>
</fo:page-sequence>
</xsl:template>
<xsl:template match="sect1|sect2|sect3">
<fo:block-container id="{generate-id()}">
<xsl:apply-templates/>
</fo:block-container>
</xsl:template>
</xsl:stylesheet>
Here's a working fiddle: http://xsltfiddle.liberty-development.net/bFD9uum