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Re: a minor thing... prefix syntax

From: Andy Seaborne <andy.seaborne@talis.com>
Date: Tue, 20 Jul 2010 20:29:33 +0100
Message-ID: <4C45F91D.6070206@talis.com>
To: Axel Polleres <axel.polleres@deri.org>
CC: SPARQL Working Group <public-rdf-dawg@w3.org>
Well, some mmebers of that community were on DAWG.

See
http://www.w3.org/DesignIssues/N3QL
for several designs including @select.

and also
http://www.w3.org/2002/09/wbs/35463/initdn/results

	Andy

On 20/07/2010 4:47 PM, Axel Polleres wrote:
> Fair point... was it ever asked to the N3/Turtle proponents?
>
> Axel
>
> On 20 Jul 2010, at 14:55, Andy Seaborne wrote:
>
>> Because it's not @SELECT @WHERE @OPTIONAL @FILTER @ORDER_BY.
>>
>> Because @prefix is syntactically a language tag and using @ to trigger
>> that gets us the greatest coverage for parsers.
>>
>> (The question I have is is why N3 has @prefix given that N3 qnames must
>> always have a ':' in them and @ is the marker for language tag.)
>>
>>          Andy
>>
>> On 20/07/2010 2:46 PM, Axel Polleres wrote:
>>> <excplicitchairhatoff>
>>>
>>> asking mainly those with historical knowledge...
>>>
>>> was it ever discussed whether to alternatively allow TURTLE style prefix declarations in SPARQL, i.e.
>>>
>>>
>>> @prefix ns:<http://example.org/ns#>   .
>>>
>>> instead of
>>>
>>> PREFIX ns:<http://example.org/ns#>
>>>
>>> ?
>>>
>>> It doesn't seem to be a major threat to the grammar for me and would ease copy paste in many cases...
>>> ... I know it is not directly in scope and if there is disagreement on it, I won't mention it further, but just thought it would be nice
>>>
>>> </excplicitchairhatoff>
>>>
>>>
>>>
>>>
>>>
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Received on Tuesday, 20 July 2010 19:29:58 GMT

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