Re: [Virtuoso-users] Exposing relational data as RDF in Virtuoso 7 open source edition

Hi Lorena, The Virtuoso Virtual Database engine required for such virtualisation of relational data is a commercial product feature only and not part of open source: http://virtuoso.openlinksw.com/features-comparison-matrix/ Best Regards Hugh Williams Professional Services OpenLink Sof

[Virtuoso-users] Exposing relational data as RDF in Virtuoso 7 open source edition

Hi It seems that it is not possible to use a R2RML mapping file to convert data from an external relational database (PostgreSQL for example) in Virtuoso Open Source edition I this correct? Is it possible to "workaround" this? regards Lorena -

Re: [Virtuoso-users] Wrong result with multiple FROM in SPARQL query

Hi Nicola, Are you able to provide a test case to recreate this behaviour we can setup locally ? Best Regards Hugh Williams Professional Services OpenLink Software, Inc. // http://www.openlinksw.com/ Weblog -- http://www.openlinksw.com/blogs/ LinkedIn -- http://www.linkedin.c

Re: [Virtuoso-users] Unable to drop graph from isql-vt

Hi Alex, On 06-Dec-13 1:12 PM, Alex Bondo Andersen wrote: Thank you for your reply. I have also tried CLEAR GRAPH and DROP SILENT GRAPH (sorry for not stating that before), none of these displays the error, yet the graph is not dropped (when I go look at the graphs through conductor). Also I h

Re: [Virtuoso-users] Geo load in Open source virtuoso 7 stable

Hi Ian, Support for geospatial ploygons, linestrings, boxes etc is available in the the open source develop/7 branch, which is soon to become the stable/7 release ... in the next few days probably ... Although note your format of your coordinates even for "point" is incorrect as the coordinate

Re: [Virtuoso-users] Unable to drop graph from isql-vt

Hi Alex, On 03-Dec-13 2:59 PM, Alex Bondo Andersen wrote: Hi, Some graphs I cannot drop from the isql-vt interface using "sparql DROP GRAPH ;", I get the following error: *** Error 22023: [Virtuoso Driver][Virtuoso Server]SPARUL_DROP() failed: graph

[Virtuoso-users] Unable to drop graph from isql-vt

Hi, Some graphs I cannot drop from the isql-vt interface using "sparql DROP GRAPH ;", I get the following error: *** Error 22023: [Virtuoso Driver][Virtuoso Server]SPARUL_DROP() failed: graph has not been explicitl

[Virtuoso-users] Wrong result with multiple FROM in SPARQL query

According to the SPARQL reference, multiple FROM clauses should mean a query over the merge of all specified datasets. http://www.w3.org/TR/sparql11-query/#unnamedGraph I used multiple graph in a query and a combination of filter and minus operators in "where" clause in this way: SELECT ?s

[Virtuoso-users] Geo load in Open source virtuoso 7 stable

I'm having problems loading ntriples like this "POLYGON((-95.131717,45.412415 -94.765356,45.4128 -94.763067,45.326113 -94.386553,45.3267 -94.383436,45.28281 -94.260949,45.28394 -94.089517,45.346629

Re: [Virtuoso-users] Finding time of query execution

Thanks a lot for your help thus far. I am really grateful to you for the same. But is there some other way out? On Tue, Nov 26, 2013 at 7:55 PM, Hugh Williams wrote: > Hi Rose, > > If you are repeat executing the same query multiple time then it will not > be recompiled thus the time reported fo

Re: [Virtuoso-users] Finding time of query execution

Sorry to drop another mail. Actually I have a deadline tomorrow (I am done with benchmarking other frameworks just Virtuoso is left) Is there some way out by which I may find the query execution time excluding the compilation time using version 6 of virtuoso? On Tue, Nov 26, 2013 at 11:21 AM, Ros

Re: [Virtuoso-users] Issue with virtuoso and apache redirection

Perfect !! Thank you Dimitris and Quentins for this help :-) 2013/12/6 Dimitris Kontokostas > For complete functionality you should define all the following rules in > apache > > ProxyPass/conductor http://example.com:/conductor > ProxyPassReverse /conductor http://examp