Re: [Virtuoso-users] NOT EXISTS keyword support in virtuoso SPARQL endpoints?

Hello Christian, There's no NOT EXISTS in current version but you may use, say, FILTER (!bif:exists ((select (1) ...))) Example from an RDF clone of Q-16 from TPC-D benchmark: sparql prefix tpcd: prefix oplsioc:

Re: [Virtuoso-users] jdbc virtuoso quad store

Hi Madhu, Are you using the Virtuoso open source or commercial product on windows, as the JDBCDemo.bat ? Below is a sample program showing how a basic JDBC connection can be made and data retrieved from the Virtuoso RDF store: $ more sample.java import java.io.*; import java.lang.*; import jav

[Virtuoso-users] NOT EXISTS keyword support in virtuoso SPARQL endpoints?

Hi, while using vos6, I discovered that the virtuoso SPARQL endpoints do not support the NOT EXISTS keyword (http://www.w3.org/TR/2009/WD-sparql11-query-20091022/#negation) at present. Is there any virtuoso specific function that acts like it? Thanks, Christian Fürber

Re: [Virtuoso-users] lod.openlinksw.com strange behaviour

Hi Kingsley, To buy my own EC2 instance is what I'm planning to do in the nearest future. Really I would be glad to do it right now but there are two critical problems (LinkedGeoData encoding and Entity Framework support bug) that make me unsure I can use Virtuoso at production. Regards, Alexande

[Virtuoso-users] jdbc virtuoso quad store

Hi, I have stored a triples file(http://sider.com) in virtuoso quad store.I am trying to access it using jdbc.Part of my program is something like this Class.forName("virtuoso.jdbc3.Driver"); String url = "jdbc:virtuoso://localhost:/DATABASE=DB/UID=dba/PWD=dba/"; Connection conn = DriverManag