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Re: namespaces

From: Andy Seaborne <andy.seaborne@epimorphics.com>
Date: Mon, 02 Jul 2012 09:04:59 +0100
Message-ID: <4FF1562B.1040103@epimorphics.com>
To: public-rdf-dawg@w3.org
This is ACTION-389?

On 02/07/12 08:31, Polleres, Axel wrote:
> http://www.w3.org/ns/sparql#
>
> was added to contain all SPARQL functions. If I remember correctly, the agreement was that all the functions we have defined in SPARQL1.1 (incl. the old ones from SPARQL1.0) have a URI in this namespace, even if they have equivalents in XPath or RIF).
>
>
> Axel
>
>
> --
> Dr. Axel Polleres
> Siemens AG Österreich
> Corporate Technology Central Eastern Europe Research & Technologies
> CT T CEE
>
> Tel.: +43 (0) 51707-36983
> Mobile: +43 (0) 664 88550859
> Fax: +43 (0) 51707-56682 mailto:axel.polleres@siemens.com
>
>
>> -----Original Message-----
>> From: Paul Gearon [mailto:pgearon@revelytix.com]
>> Sent: Thursday, 28 June 2012 10:13 PM
>> To: SPARQL Working Group
>> Subject: namespaces
>>
>> Hi all,
>>
>> In the work I'm doing we're looking at mapping External
>> functions into their SPARQL equivalents. That's OK for XPath
>> and RIF built-ins (where equivalent functions exist), but
>> there are a few functions that only occur in SPARQL. In this
>> case we want to use namespaces like sfn:.
>>
>> The Query document mentions the sfn: namespace in 1.2.1,
>> though it's not referenced again. It also points to the list at:
>>    http://www.w3.org/2009/sparql/wiki/SPARQL_Namespaces
>>
>> This list includes functions from SPARQL 1.0. From memory,
>> nothing was formally approved for 1.0, though there is the page at:
>>
>> http://lists.w3.org/Archives/Public/public-rdf-dawg/2006AprJun
>> /att-0138/sparql-function-uri.html
>>
>> So I'm wondering if there has been any acceptance of these
>> old 1.0 URIs, and what may have happened with the new
>> functions in 1.1. We're also concerned about not knowing the
>> case to use for the fragment portion of URIs (since the case
>> varies throughout the SPARQL query document, yet URIs are
>> case sensitive).
>>
>> I remember there being some discussion around URIs a while
>> back, but I don't recall anything coming of it beyond what
>> I've mentioned. I also note that the page corresponding to
>> the location specified by the sfn:
>> namespace has only a single function in it (bound), and there
>> is a note in the Query document saying it ought to be
>> populated. If it does get populated, then having a link to
>> that page from the query document would be useful as well (it
>> seems archaic to have to copy/paste to follow a link).
>>
>> Have I missed what transpired wrt to namespaces, or did the
>> discussion stall? If it's stalled, then I'm loathe to
>> introduce new work, but I do need to refer to the SPARQL
>> functions, and I don't want to be minting my own URIs to do it.
>>
>> Regards,
>> Paul Gearon
>> Revelytix, Inc
>>
>>
>
Received on Monday, 2 July 2012 08:05:36 GMT

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