On 12/2/10 2:48 PM, Aldo Bucchi wrote:
Vanessa,
On Thu, Dec 2, 2010 at 4:34 PM, Vanessa Lopez wrote:
Hi all!
Is there any way to access to a public virtuoso SPARQL end point
(e.g. http://dbpedia.org/sparql or http://demo.openlinksw.com) via
JDBC ? (same as when accessing to it locally)
Som
* [2010-12-02 13:23:30 -0700] Wood, Jamey écrit:
] Thanks for your response. I wonder if anyone could comment on how
] difficult the remaining work would be. Since the R-Tree indexing part has
] already been implemented, I wonder if the rest would largely just be a
] matter of integrating vario
Hi Patrick,
Thanks for your response. I wonder if anyone could comment on how
difficult the remaining work would be. Since the R-Tree indexing part has
already been implemented, I wonder if the rest would largely just be a
matter of integrating various higher-level functionality from an existing
Vanessa,
On Thu, Dec 2, 2010 at 4:34 PM, Vanessa Lopez wrote:
> Hi all!
>
> Is there any way to access to a public virtuoso SPARQL end point
> (e.g. http://dbpedia.org/sparql or http://demo.openlinksw.com) via
> JDBC ? (same as when accessing to it locally)
>
> Something like:
>
> Class.forName
Hi Jamey,
In playing with a trial copy of Virtuoso 6.2 (Commercial Edition),
I've noticed that it appears that its geospatial capabilities only
cover points. For example:
SQL> select st_geomfromtext('LINESTRING(3 4,10 50,20 25)');
*** Error 37000: [Virtuoso Driver][Virtuoso Server]GEO..
On 12/2/10 2:34 PM, Vanessa Lopez wrote:
Hi all!
Is there any way to access to a public virtuoso SPARQL end point
(e.g. http://dbpedia.org/sparql or http://demo.openlinksw.com) via
JDBC ? (same as when accessing to it locally)
Something like:
Class.forName("virtuoso.jdbc3.Driver");
con = Dr
Hi all!
Is there any way to access to a public virtuoso SPARQL end point
(e.g. http://dbpedia.org/sparql or http://demo.openlinksw.com) via
JDBC ? (same as when accessing to it locally)
Something like:
Class.forName("virtuoso.jdbc3.Driver");
con = DriverManager.getConnection("jdbc:virtu
Hello Vanessa,
Finding all graphs on a busy database is indeed a problem.
The most popular way is to "cheat" a bit in hope that every graph
contains at least one triple for some rdf:type of some subject. The
query
SELECT DISTINCT ?g WHERE { GRAPH ?g {?s a ?t}}
has much more changes to complete,
In playing with a trial copy of Virtuoso 6.2 (Commercial Edition), I've noticed
that it appears that its geospatial capabilities only cover points. For
example:
SQL> select st_geomfromtext('LINESTRING(3 4,10 50,20 25)');
*** Error 37000: [Virtuoso Driver][Virtuoso Server]GEO..: Bad geometry
Hi Hugh,
thank you very much for your hints. I have changed the settings
accordingly and now queries with umlauts seem to work.
Best Regards,
Andreas
Am 30.11.10 04:49, schrieb Hugh Williams:
> Hi Andreas,
>
> Please see the following documentation on configuring Virtuoso for wide
> character /
Thanks Hugh!
Maybe this is a silly question, I can run an isql command in my local
virtuoso, but how can I obtain the different graphs that are currently
in a public SPARQL end point such as http://demo.openlinksw.com/sparql
wihouth a login?
I notice that the graph URI: http://dbpedia.org
Hi Vanessa,
Please use the following special function for obtaining a list of available
graphs in Virtuoso:
DB.DBA.SPARQL_SELECT_KNOWN_GRAPHS()
Which can be run from an isql command line prompt or the Virtuoso conductor SQL
interface.
Best Regards
Hugh Williams
Professional Services
O
Hi all!
How can obtain all graph URIs in a given Virtuoso sparql end point?
I tried in http://demo.openlinksw.com/sparql with the query
SELECT DISTINCT ?g
WHERE { GRAPH ?g {?s ?p ?o}}
But it just gives me
40001 Error SR172: Transaction deadlocked
in
DB.DBA.SPARQL_SELECT_KNOWN_GRAPHS([executable
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