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Re: NRL

From: Marc Hadley <Marc.Hadley@Sun.COM>
Date: Thu, 26 May 2005 11:32:45 -0400
To: Mark Nottingham <mnot@mnot.net>
Cc: Stefan Tilkov <stefan.tilkov@innoq.com>, public-web-http-desc@w3.org
Message-id: <1C1A5DCB-B9DF-4185-B412-2B2E71A7AD72@Sun.COM>

On May 26, 2005, at 10:57 AM, Mark Nottingham wrote:

>
> I very much agree that you should be able to plug in any  
> description of the content you want -- and be able to have multiple  
> descriptions co-exist. I'm not sure that NRL is necessary, though;  
> isn't it enough to do something like;
>
> <web:resource id="foo">
>    <web:method name="GET">
>        <web:representation media_type="application/xml">
>           <web:xml_schema>...</web:xml_schema>
>           <web:rng>...</web:rng>
>           <web:owl>...</web:owl>
>           <web:xpath_name_tuples>...</web:xpath_name_tuples>
>        </web:representation>
>     </web:method>
> </web:resource>
>
> ?
>
> (or put any or ever of the description containers in a separate  
> namespace)
>
> After all, you don't need to process the description; it's just  
> metadata.
>
I agree, with WADL the wadl:types element can contain any kind of  
(XML based) description desired. A wadl:representation references the  
root element of an XML-based representation using the element QName  
so anything that supports definition of XML elements in a namespace  
will suffice. NRL would work inside the wadl:types element but it  
would also be OK to include multiple different description formats of  
the same thing too.

Marc.

>
> On May 26, 2005, at 12:36 AM, Stefan Tilkov wrote:
>
>
>>
>> In a comment to one his weblog postings [1], DaveO pointed me to  
>> James Clark's NRL [2]. It's probably  known to everybody here, but  
>> in the context of web description formats, maybe using this or  
>> something similar to decouple the description format from the  
>> schema language is a good idea.
>>
>> [1] http://www.pacificspirit.com/blog/2005/05/16/ 
>> partial_understanding
>> [2] http://www.thaiopensource.com/relaxng/nrl.html
>>
>> Stefan
>>
>> --
>> Stefan Tilkov, stefan.tilkov@innoq.com, http://www.innoq.com
>> innoQ Deutschland GmbH, Halskestr. 17, D-40880 Ratingen, Germany
>> Phone: +49 170 471 2624  Fax: +49 2102 77160-1
>> ICQ: 177869128, AIM: stefantilkov, Weblog: http://www.innoq.com/ 
>> blog/st/
>>
>>
>>
>>
>>
>>
>
> --
> Mark Nottingham     http://www.mnot.net/
>
>
>

---
Marc Hadley <marc.hadley at sun.com>
Business Alliances, CTO Office, Sun Microsystems.
Received on Thursday, 26 May 2005 15:32:59 GMT

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