Customization layer problem. Bug?

[fsteimke]

Hy,

i would like to extend DocBook with elements from another namespace. I have created a RELAX NC grammar like this:

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 namespace cl = "http://osci.bremen.de/publish/codelist"

 namespace db = "http://docbook.org/ns/docbook"



 include "http://docbook.org/xml/5.0/rng/docbookxi.rnc" {

    db.components |= cl.codeliste

 }

 cl.codeliste =

    element cl:codeliste {

        attribute title { text }

    }

Then i have created a very simple book for demo purpose:

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 <book xmlns="http://docbook.org/ns/docbook" xmlns:xi="http://www.w3.org/2001/XInclude"    xmlns:cl="http://osci.bremen.de/publish/codelist"

    xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">

    <title>Test</title>

    <chapter>

        <title>Test</title>

        <simpara>Chapter should be valid</simpara>

    </chapter>

 </book>

This is fine, unless i assign the schema from above via

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 <?xml-model href="standardcodelisten-v2.rnc" type="application/relax-ng-compact-syntax"?>

If i do, the <chapter> elemt becomes invalid. JING says:

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System-ID: E:\cygwin\home\osci\oscisoftware\docbook 5\framework\codelist\source\demo.xml

Haupt-Validierungsdatei: E:\cygwin\home\osci\oscisoftware\docbook 5\framework\codelist\source\demo.xml

Schema: E:\cygwin\home\osci\oscisoftware\docbook 5\framework\codelist\source\standardcodelisten-v2.rnc

Programmname: Jing

Fehlerlevel: error

Beschreibung: element "chapter" not allowed anywhere; expected the element end-tag or element "bibliography", "cl:codeliste", "glossary", "index", "info", "part", "reference", "subtitle", "titleabbrev", "toc" or "xi:include"

Anfang: 6:6

Ende: 6:13

Program version is Oxygen 14.2.

Is this a bug, or did i get something wrong?

Sincerely,
Frank

[ohofrichter]

Hi,

it's not an bug.

The problem is the redefinition of db.components instead of combination:

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include "http://docbook.org/xml/5.0/rng/docbookxi.rnc" {

    db.components |= cl.codeliste

}

In the previous code the grammar docbookxi.rnc is is included and as part of this inclusion the element db.components is redefined.

You have to do it the following way to merge the definitions:

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include "http://docbook.org/xml/5.0/rng/docbookxi.rnc"



db.components |= cl.codeliste