- From: <jos.deroo@agfa.com>
- Date: Mon, 13 Dec 2004 01:40:27 +0100
- To: andy.seaborne@hp.com
- Cc: "Eric Prud'hommeaux" <eric@w3.org>, public-rdf-dawg@w3.org
Andy Seaborne wrote:
> [...]
> I'm guessing but I think the query should be:
>
> SELECT ?name
> WHERE ( ?x foaf:name ?name )
> UNSAID ( ?x foaf:page ?mbox )
I believe that we should avoid closed world assumption
and so would like to propose "unsaid in which document"
I've done a test with similar query testC.n3
[] q:select {<> q:answer (?name)};
q:where {?x foaf:name ?name.
<testP.n3> q:unsaid {?x foaf:page ?mbox}}.
and having both GRAPH and FROM testP.n3
:a foaf:name "Alice" .
:a foaf:page <http://work.example/alice> .
:a foaf:workplaceHomepage <http://work.example/alice> .
:b foaf:name "Bob" .
:c foaf:name "Eve" .
:c foaf:page <http://isp.example/eve> .
:c foaf:workplaceHomepage <http://work.example/eve> .
http://www.agfa.com/w3c/euler/#R4072 gives
<file:/temp/testC.n3> q:answer ("Bob").
--
Jos De Roo, AGFA http://www.agfa.com/w3c/jdroo/
Received on Monday, 13 December 2004 00:41:22 UTC