Docbook xi:include

Question

I am trying to create a docbook. I have created a main XML book and inside it I am using <xi:include> to add different chapters.

I am following DocBook XSL: The Complete Guide / Using XInclude to create book and chapter files.

Here is my main XML file book1.xml.

<?xml version="1.0"?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
                      "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
<book>
  <title>MAIN NOTES</title>
  <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="CH1.xml" />
</book>

And here is my chapter1 (CH1.xml).

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
                         "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
<chapter id="CH1">
  <title>Chapter 1</title>
  <para>This is Test</para>
</chapter>

Now when I am validating these XML files, CH1.xml is ok. But I am always getting

No Declaration found for element "xi:include"

for book1.xml. What am I missing here? Please help.

Which parser do you use? Is it XInclude-aware, or can you check that XInclude features are enabled? — potame, Jan 27 '15 at 14:25

score 1 · Accepted Answer · answered Jan 28 '15 at 17:21

1

How to make DTD validation work when using XInclude is described in another section of "DocBook XSL: The Complete Guide": http://www.sagehill.net/docbookxsl/ValidXinclude.html.

In short, there are two alternatives:

Validate after XInclude processing. With xmllint, this can be done using this command: xmllint --xinclude --postvalid book1.xml
Customize the DTD to include the xi:include element.

answered Jan 28 '15 at 17:21

mzjn

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Thanks. That solves the problem. I used `xmllint --xinclude --postvalid book1.xml` and output is a valid xml. – Joydeep Jan 29 '15 at 06:17

Docbook xi:include

1 Answers1