Re: [jjc@hplb.hpl.hp.com: Literal searching requirement]

On Tue, Sep 28, 2004 at 10:43:10AM -0400, Kendall Clark wrote:
> 
> >From our comments list:
> 
> ----- Forwarded message from Jeremy Carroll <jjc@hplb.hpl.hp.com> -----
> 
> In
> http://www.w3.org/TR/2004/WD-rdf-dawg-uc-20040802/
> 
> I note that there is a design objective that
> [[
> 4.8 Literal Search
> 
> It should be possible for a query to perform substring searches of RDF 
> string literals.
> ]]
> and a requirement
> [[
> 3.3 Extensible Value Testing
> ]]
> 
> but no requirement to be able to search on langtag of plain literals, 
> nor the datatype of typed literals.
> 
> This seems like an omission, since the langtag gives vital information
> in multilingual documents. Also it may often be useful to find all
> literals with a particular datatype.
> 
> Ideally some langtag matching such as language ranges or lang tag 
> fallback, as described in RFC 3066 would be best.

We can also get a use case from PICS, which, in current thinking
(according to danbri), requires beginsWith, endsWith, contains, and
matches application rules (no idea what the latter is).
-- 
-eric

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