RE: [docbook] Java binding (JAXB) for docbook.rng and docbook.xsd (Are "role" and "type" duplicated in the 5.0 XML schema?)

["stefano casadei" <scasadei@yahoo.com>]

I don't really know if omitting those elements is safe (until 1 week ago I
knew nothing about xml).
Moreover, since there are a lot of errors of that kind I suspect it won't be
a quick fix...

On the other hand, the relax NG version, docbook.rng, PASSED the "parse
stage" of xjc:
parsing a schema...
compiling a schema...
But, I got lots of errors of the type:
[ERROR] Invalid class name "db.bridgehead.renderas.enumeration". 
Either XJC has failed to derive a class name from XML name, or invalid name
is given. 
Use <jaxb:class> customization to override a name.

These errors show up if and only if the string "enumeration" appears in the
name.
I tried to replace "enumeration" with "jenumeration" but that did not solve
the problem.
I am quite puzzled by this, even more so that the reserved keyword "class"
did not trigger an error 
(e.g., <define name="db.biblio.class.attribute"> was ok).

 


-----Original Message-----
From: Wolfgang Laun [mailto:wolfgang.laun@gmail.com] 
Sent: Wednesday, February 03, 2010 4:23 PM
To: docbook@lists.oasis-open.org
Subject: [docbook] Are "role" and "type" duplicated in the 5.0 XML schema?

docbook.xsd contains:

<xs:attributeGroup name="db.common.linking.attributes">...
    <xs:attribute ref="xlink:type"/>
    <xs:attribute ref="xlink:role"/>

and several docbook element definitions contain

<xs:element name="...">
   <xs:complexType mixed="true">
      ...
      <xs:attribute name="role"/>              <!-- or name="type" -->
      <xs:attributeGroup ref="docbook:db.common.linking.attributes"/>
  </xs:complexType>
</xs:element>

which, although unusual, is technically correct since one attribute is
in namespace  "http://docbook.org/ns/docbook"; and the other one in
"http://www.w3.org/1999/xlink";.

But it is apparent from the docbook spec that this is unintentional
and therefore I think that the redundant <xs:attribute> elements
should be omitted. Is this correct?

-W

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