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From: Pier Fumagalli <pier@betaversion.org>
Subject: Re: validation block: RELAX-NG, XML-Schema,
 any other languages required?
Date: Thu, 8 Sep 2005 11:40:41 +0100
To: dev@cocoon.apache.org


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On 8 Sep 2005, at 10:19, Gianugo Rabellino wrote:
> On 9/7/05, Pier Fumagalli <pier@betaversion.org> wrote:
>
>> I'm almost done implementing XSD (XML Schema) validation using
>> Xerces' internals! :-P
>> That was hard, but I got it working outside Cocoon's sandbox, now it
>> only needs a couple of wrappers for source/entity resolution between
>> Cocoon and Xerces.
>>
>> Any other languages that _seriously_ deserve some attention before
>> marking the block as "stable" ?
>>
>
> I'd love to see Schematron, as the only language which allows easy and
> selective validation (not to mention domain-specific validation as
> well). I still don't quite see why you didn't go the MSV way apart
> from distribution issues (we have schema, rng and schematron
> implemented as msv plugins in our validation stuff), but hey, as long
> as you're giving free code away, I'm happy ;)

Well, distribution issues _are_ quite important :-D

If you want to use MSV, simply write a couple of "mocks" classes for  
what you need, and from there you can build a MSVSchemaParser and a  
MSVSchema you can use directly with the components provided within  
the "validation" block. That should be straightforward to do. Someone  
could do exactly the same for javax.xml.validation in JAXP 1.4 and so  
on and so forth (actually, javax.xml.validation _is_ redistributed  
with cocoon, I'll do something with it)...

I don't think that having a dependancy on something we cannot  
redistribute for a generic (and IMVHO essential) feature such as  
validation is a good thing.

But hey, if you want to implement it, mock, and write! :-P

     Pier


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