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Re: Template language for SPARQL?

From: James Leigh <james-nospam@leighnet.ca>
Date: Fri, 08 Jun 2012 13:58:14 -0400
Message-ID: <1339178294.2288.19.camel@james-PBL21>
To: David Booth <david@dbooth.org>
Cc: semantic-web <semantic-web@w3.org>
On Thu, 2012-05-31 at 21:45 -0400, David Booth wrote:
> [Resending, as my previous message never showed up.]
> 
> I would like to be able to write something like this:
> 
>   SELECT ?s
>   WHERE { ?s a ${CLASS} . }
> 
> and have ${CLASS} substituted in from an environment variable or other
> parameter, but SPARQL does not currently provide anything like this, and
> it's clearly beyond what the working group could put in SPARQL 1.1.  
> So I'm wondering . . . 
> 
> What have others been using as a template language for SPARQL?  
> 
> I know TopQuadrant uses an RDF representation for SPARQL CONSTRUCT
> queries in conjunction with SPIN, 
> http://www.w3.org/Submission/2011/02/ 
> but it shreds the SPARQL query into tiny RDF pieces, which is rather
> unfriendly for a human to read.  It would be much nicer to have
> something like the above.
> 
> How are others handling the need to parameterize their SPARQL queries
> like this?
> 
> 
> 

In Callimachus we have created four types of query parameters for use
with query string parameters. You can read about them here:

http://code.google.com/p/callimachus/wiki/NamedQueries#Parameters

Cheers,
James
Received on Friday, 8 June 2012 17:58:39 GMT

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