Re: [Springframework-developer] Extensible XML processing in Spring: prototype version available in CVS HEAD

[<jas...@ma...>]

On 13 Jun 2005, at 17:47, Fredrik Lindgren wrote:
> On Mon, 13 Jun 2005 09:51:04 +0200, <jas...@ma...> wrote:
>>
>>> Please go ahead and add the custm xml functionality, but in the  
>>> Spring spirit, keep the validation implementation pluggable.
>>>
>>
>> It is! :)
>>
>> Whatever the end user uses to validate their XML is up to them -  
>> either DTD, XSD or no validation are the choices right now.
>>
>
> I know. That's why I support adding the functionality as it is  
> right now. I only objected to the idea of switching to XSD as a  
> required/default validation mechanism for the spring XML.  
> Personally I prefer to use RELAX NG for my validation needs since  
> it has better support for alternative syntaxes (attribute or child  
> content) and support for cooccurence constraints which might be  
> helpful for catching some additional configuration errors. I'll  
> check out the implementation details and try to get back with more  
> constructive feedback.

Agreed! XSD is a PITA :)

It might even be simpler to write the Spring schema in terms of  
RelaxNG, then code generate the DTD and XSD from it - letting folks  
use whichever schema validation mechanism they wish - DTD or XSD or  
if they can Relax NG.

http://thaiopensource.com/relaxng/trang.html

If nothing else, this will mean we don't have to hand-maintain both  
the DTD and the XSD - but also RelaxNG is so much simpler to read

James
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