W3C home > Mailing lists > Public > semantic-web@w3.org > December 2007

Re: SPARQL endpoint URIs

From: Richard Cyganiak <richard@cyganiak.de>
Date: Wed, 19 Dec 2007 16:39:39 +0000
Cc: Marja Koivunen <marja@annotea.org>, SWIG <semantic-web@w3.org>
Message-Id: <ACFA8EAF-40D6-4235-99B0-55A3500B6E43@cyganiak.de>
To: Tim Berners-Lee <timbl@w3.org>

Tim,

On 19 Dec 2007, at 15:54, Tim Berners-Lee wrote:
> Is there an RDFS Class of SPARQL endpoints?

Semantic Sitemaps are a minimalist extension of Google's Sitemap  
protocol [1], which is XML-based, and not RDF. So at the moment we  
don't define RDFS classes.

Once our basic spec is finalized, we will look into making a matching  
RDF vocabulary and GRDDL transform. This would be nice because of  
RDF's natural extensibility, and there would be natural synergies with  
POWDER. This vocabulary would of course include a class for SPARQL  
endpoints.

Richard

[1] http://sitemaps.org/

>
>
> Tim
>
> On 2007-12 -19, at 10:36, Richard Cyganiak wrote:
>
>>
>>
>> On 19 Dec 2007, at 15:03, Marja Koivunen wrote:
>>> I probably missed something in the documents but is there an easy  
>>> way to know that a URI is a SPARQL endpoint URI?
>>
>> No. That's one of the things missing from the SPARQL protocol.  
>> There's no way to check if a URI is a SPARQL endpoint URI except by  
>> sending a test query.
>>
>> Semantic Sitemaps [1] are designed to solve this, among other  
>> things. But the standard is still under active development and not  
>> yet widely deployed.
>>
>> Best,
>> Richard
>>
>> [1] http://sw.deri.org/2007/07/sitemapextension/
>>
>>
>>>
>>>
>>> Marja
>>>
>>>
>>
>
>
Received on Wednesday, 19 December 2007 16:39:58 GMT

This archive was generated by hypermail 2.3.1 : Tuesday, 26 March 2013 21:45:19 GMT