Dear Hugh,
I apologize, I sent you the version of the virtjdbc4.jar and not of the
virtjdbc3.jar that I am actually using and is the exact same version you
listed.
I believe I have the most recent versions of all the components.
Anything else I should check?
Thank you,
Paolo
On Sun, Feb 2, 2014 at 1:43 PM, Hugh Williams <hwilli...@openlinksw.com>wrote:
> Hi Paolo,
>
> Looking at the version of your JDBC driver it seems quite old, as the
> latest version is:
>
> $ java -jar virtjdbc3.jar
> OpenLink Virtuoso(TM) Driver for JDBC(TM) Version 3.x [Build 3.62]
> $
>
> available for download from:
>
>
> http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VOSDownload#Jena%20Provider
>
> Can you please update to this version and try again ...
>
> Best Regards
> Hugh Williams
> Professional Services
> OpenLink Software, Inc. // http://www.openlinksw.com/
> Weblog -- http://www.openlinksw.com/blogs/
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> Universal Data Access, Integration, and Management Technology Providers
>
> On 31 Jan 2014, at 00:21, Paolo Ciccarese <paolo.ciccar...@gmail.com>
> wrote:
>
> Hi Hugh,
> I am running basically the code of that example, trimmed down to the ASK
> (the full example run fine though).
> The ASK in my case is simply to verify the existence of a graph
>
> I am using
> Virtuoso Open Source Edition (Row Store) (multi-threaded)
> Version 6.1.8.3127-pthreads as of Jan 22 2014
> Compiled for Darwin (i386-apple-darwin10.8.0)
>
> JDBC
> OpenLink Virtuoso(TM) Driver for JDBC(TM) Version 4.x [Build 3.55]
>
> Jena provider
> OpenLink Virtuoso(TM) Provider for Jena(TM) Version 2.10.1 [Build 1.10]
> Jena API
> v. 2.11.0
>
>
> Thank you for your help,
> Paolo
>
>
>
>
> On Wed, Jan 29, 2014 at 8:41 PM, Hugh Williams
> <hwilli...@openlinksw.com>wrote:
>
>> Hi Paolo,
>>
>> Have you tried the Example9 program which demonstrates the use of ASK
>> queries in the Jena Provider documentation at:
>>
>>
>> http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VirtJenaProvider
>>
>> Also, please confirm the version of the Virtuoso server, Jena Provider ,
>> Jena Framework and JDBC Driver being used:
>>
>> virtuoso-t -?
>> java -jar virt_jena.jar
>> java -jar virtjdbc3.jar
>>
>> Best Regards
>> Hugh Williams
>> Professional Services
>> OpenLink Software, Inc. // http://www.openlinksw.com/
>> Weblog -- http://www.openlinksw.com/blogs/
>> LinkedIn -- http://www.linkedin.com/company/openlink-software/
>> Twitter -- http://twitter.com/OpenLink
>> Google+ -- http://plus.google.com/100570109519069333827/
>> Facebook -- http://www.facebook.com/OpenLinkSoftware
>> Universal Data Access, Integration, and Management Technology Providers
>>
>> On 29 Jan 2014, at 20:07, Paolo Ciccarese <paolo.ciccar...@gmail.com>
>> wrote:
>>
>> I am trying to check for the existence of a graph and if I execute this
>> query in the Conductor
>> ASK { GRAPH <http://example.org/tests/graph/001> { ?s ?p ?o . } }
>> returns 'false' when the graph is not there.
>>
>> However, if I run the same query with Jena and the Virtuoso Jena Provider
>> I always get back 'true':
>>
>> VirtGraph set = new VirtGraph ("jdbc:virtuoso://localhost:1111", "*dba*",
>> "*dba*");
>> String query = "ASK { GRAPH <http://example.org/tests/graph/001> { ?s ?p
>> ?o . } }";
>> Query sparql = QueryFactory.create(query);
>> VirtuosoQueryExecution vqe = VirtuosoQueryExecutionFactory.create
>> (sparql, set);
>> boolean result = vqe.execAsk();
>>
>> Any advice that can help me out?
>>
>> Thank you in advance,
>> Paolo
>>
>>
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>>
>
>
> --
> Dr. Paolo Ciccarese
> http://www.paolociccarese.info/
> Biomedical Informatics Research & Development
> Instructor of Neurology at Harvard Medical School
> Assistant in Neuroscience at Mass General Hospital
> Member of the MGH Biomedical Informatics Core
> +1-857-366-1524 (mobile) +1-617-768-8744 (office)
>
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> ------------------------------------------------------------------------------
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> security issues and trends. Skip the complicated setup - simply import
> a virtual appliance and go from zero to informed in seconds.
>
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>
--
Dr. Paolo Ciccarese
http://www.paolociccarese.info/
Biomedical Informatics Research & Development
Instructor of Neurology at Harvard Medical School
Assistant in Neuroscience at Mass General Hospital
Member of the MGH Biomedical Informatics Core
+1-857-366-1524 (mobile) +1-617-768-8744 (office)
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