Hi Carlos,
The reason it fails is that the xi:include element isn't formally part of the DocBook schema, so when you validate against the pure DocBook schema, you will get these errors.
The good news is that there is a RelaxNG schema that includes the xinclude syntax. I just tried to validate your example with that schema and it succeeded. Here is a link to the DocBook 5.0 RelaxNG page:
http://www.docbook.org/xml/5.0/rng/
The schema you need is docbookxi.rng (there's also a .rnc version there).
Best Regards,
Dick Hamilton
-------
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On Mar 6, 2013, at 10:33 AM, Carlos Araya wrote:
> Good morning:
>
> I have the following file that runs multiple XIncluded content.
>
> <?xml version="1.0" encoding="UTF-8"?>
> <book version="5.0" xml:id="ruby-on-rails-3.2-en" xml:lang="en"
> xmlns="http://docbook.org/ns/docbook"
> xmlns:xlink="http://www.w3.org/1999/xlink"
> xmlns:xi="http://www.w3.org/2001/XInclude"
> xmlns:svg="http://www.w3.org/2000/svg"
> xmlns:m="http://www.w3.org/1998/Math/MathML"
> xmlns:html="http://www.w3.org/1999/xhtml"
> xmlns:db="http://docbook.org/ns/docbook">
> <info>
> <title>Ruby on Rails 3.2 - Step by Step</title>
>
> <abstract>
> <para>This is a step by step book to learn how to code Ruby 1.9 and use Ruby on Rails 3.2 to create modern web applications.</para>
> </abstract>
>
> <edition>1.0</edition>
>
> <author>
> <personname><firstname>Some</firstname><surname>Author</surname></personname>
>
> <email></email>
>
> <affiliation>
> <orgname>AMOOMA GmbH</orgname>
> </affiliation>
> </author>
>
> <pubdate>2012</pubdate>
> </info>
>
> <dedication>
> <para>For my family.</para>
> </dedication>
>
> <preface xml:id="preface">
> <title>Preface</title>
>
> <para>Content for the preface goes here...</para>
> </preface>
>
> <xi:include href="installation-und-versionsauswahl.xml"/>
>
> <xi:include href="ruby-grundlagen.xml"/>
>
> <xi:include href="erste_schritte_mit_rails.xml"/>
>
> <xi:include href="activerecord.xml"/>
>
> <xi:include href="scaffolding.xml"/>
>
> <!-- There is more xi:included content. This was trimmed for the email -->
> <index xml:id="stichwortverzeichnis"/>
> </book>
>
> When I try to validate with Jing, I get the following errors:
>
> [java] /Users/carlos.araya/code/ruby-book/en/docbook/index.xml:68:60: error: element "xi:include" not allowed here; expected the element end-tag or element "acknowledgements", "appendix", "article", "bibliography", "chapter", "colophon", "dedication", "glossary", "index", "part", "preface", "reference" or "toc"
> [java] /Users/carlos.araya/code/ruby-book/en/docbook/index.xml:70:43: error: element "xi:include" not allowed here; expected the element end-tag or element "acknowledgements", "appendix", "article", "bibliography", "chapter", "colophon", "dedication", "glossary", "index", "part", "preface", "reference" or "toc"
> [java] /Users/carlos.araya/code/ruby-book/en/docbook/index.xml:72:52: error: element "xi:include" not allowed here; expected the element end-tag or element "acknowledgements", "appendix", "article", "bibliography", "chapter", "colophon", "dedication", "glossary", "index", "part", "preface", "reference" or "toc"
> [java] /Users/carlos.araya/code/ruby-book/en/docbook/index.xml:74:40: error: element "xi:include" not allowed here; expected the element end-tag or element "acknowledgements", "appendix", "article", "bibliography", "chapter", "colophon", "dedication", "glossary", "index", "part", "preface", "reference" or "toc"
> [java] /Users/carlos.araya/code/ruby-book/en/docbook/index.xml:76:39: error: element "xi:include" not allowed here; expected the element end-tag or element "acknowledgements", "appendix", "article", "bibliography", "chapter", "colophon", "dedication", "glossary", "index", "part", "preface", "reference" or "toc"
> [java] /Users/carlos.araya/code/ruby-book/en/docbook/index.xml:78:34: error: element "xi:include" not allowed here; expected the element end-tag or element "acknowledgements", "appendix", "article", "bibliography", "chapter", "colophon", "dedication", "glossary", "index", "part", "preface", "reference" or "toc"
>
> I've checked both the DB5: The Definitive Guide and Bob's book and can't find a reason why this would fail validation.
>
> Caros
