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Re: [xml-dev] Re: XSLT 3.0 Relax NG Schema
- From: George Cristian Bina <george@oxygenxml.com>
- To: mozer <xmlizer@gmail.com>
- Date: Tue, 25 Jun 2013 00:36:36 +0300
Just a comment on Relax NG and default values:
On 6/24/13 6:56 PM, mozer wrote:
>> >
>> >(2) - In W3C's working draft some attributes have a default value, e.g.,
>> >attribute "decimal-separator" of element "decimal-format" has default value
>> >".".
>> >Your schema does not contain any default values, is that for a reason?
> Well, first reason is that Relax NG doesn't support default values.
> But there is a specific extension that could deal with that.
Relax NG itself does not define anything for default values indeed.
However, the Relax NG DTD compatibility specification defines an
annotation that can be used to specify a default value, see
http://relaxng.org/compatibility-20011203.html#default-value
I implemented this support on top of Jing in the DITA-NG project
http://code.google.com/p/dita-ng/
This implements DITA in Relax NG and DITA relies at its core on default
values for the class and domains attributes, so this was a very
important requirement to be able to use Relax NG for DITA.
In any case, if the specification talks about default values then you
may consider adding them though an a:defaultValue annotation and leave
the tools to support that if they want to.
Best Regards,
George
--
George Cristian Bina
<oXygen/> XML Editor, Schema Editor and XSLT Editor/Debugger
http://www.oxygenxml.com
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