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Re: [Entailment] D-entailment (and upwards) issue?

From: Andy Seaborne <andy.seaborne@talis.com>
Date: Tue, 11 May 2010 11:37:26 +0100
Message-ID: <4BE93366.60905@talis.com>
To: Axel Polleres <axel.polleres@deri.org>
CC: SPARQL Working Group <public-rdf-dawg@w3.org>


On 11/05/2010 9:31 AM, Axel Polleres wrote:
> Ah, phew, that solves the issue for numerics, and for "=" with custom datatypes
> this issue can be solved by Operator Extensibility (Section 11.3.1) right?

Yes.  SPARQL requires support for the XSD cases of numbers, dateTimes, 
strings and boolean.  XSD F&O provides a large body of work to reuse.

By popular demand, ARQ adds xsd:time, Gregorian dates, and xsd durations 
(much of the real work and details like parsing and range checking is 
actually done by Xerces/J).  And Roman numerals for testing the 
extension mechanisms.

	Andy
Received on Tuesday, 11 May 2010 10:38:03 GMT

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