- From: Kendall Clark <kendall@monkeyfist.com>
- Date: Fri, 18 Jun 2004 15:02:01 -0400
- To: Dave Beckett <dave.beckett@bristol.ac.uk>
- Cc: RDF Data Access Working Group <public-rdf-dawg@w3.org>
On Tue, Jun 15, 2004 at 11:42:35AM +0100, Dave Beckett wrote: > Free text searching of literals > > It should be possible to perform free text searches of RDF literals > in the query. Free text search at the minimum means allowing > substring searches of literals or could include more powerful > matches such as regexs or full-blown matches with stemming etc. I think we need some more discussion of this issue. A related issue came up the other day, a use case from the guys at Fujitsu Labs of America (who're doing interesting stuff w/ SW and services). They want to be able from DAWG QL to query the 'metadata of literals' -- an awkward phrase, but I'm not sure how else to put it. They want, in other words, to be able to query, say, the xml:lang of a literal. Something like: SELECT ?x FROM <graph> WHERE (foo, rdfs:label, ?x) and (?x, xml:lang, "jp") That last bit isn't really in the graph (?), but I can't think of a syntax for filter on literals. Kendall
Received on Friday, 18 June 2004 15:04:07 UTC