Hi Luke,
Have you run the sample programs provided with the Jena RDF provider
to confirm these work as detailed at:
http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/
VirtJenaProvider#Testing
These all use the VirtGraph class, but VirtModel should work also.
The other point to check is that you are using the specific Virtuoso
JDBC Driver (virtjdbc3.jar) shipped with your release. This is
especially true if you've had previous Virtuoso installations
installed and they may be an old version being picked up, so check to
ensure the CLASSPATH is set to pickup the correct driver, the version
of which can be checked by running the following command:
$ java virtuoso.jdbc3.Driver
OpenLink Virtuoso(TM) Driver for JDBC(TM) Version 3.x [Build 3.25]
Best Regards
Hugh Williams
Professional Services
OpenLink Software
Web: http://www.openlinksw.com
Support: http://support.openlinksw.com
Forums: http://boards.openlinksw.com/support
On 28 Oct 2008, at 22:38, Luke McCarthy wrote:
Hi there,
I am attempting to query a Virtuoso server using Jena. For maximum
compatibility with the existing code base, I'd like to end up with a
com.hp.hpl.jena.rdf.model.Model implementation.
The code I've got looks like this:
Model model = VirtModel.createDatabaseModel(
"test_1",
"jdbc:virtuoso://localhost:1111",
"dba",
"dba"
);
This dies immediately with the following exception:
"virtuoso.jdbc3.VirtuosoException: Virtuoso Communications Link
Failure
(timeout) : Connection to the server lost"
Inspection of the server logs reveals the following message:
"Malformed data received from IP [127.0.0.1] : Box length too large.
Disconnecting the client"
Does anyone know how to fix this? Is it a server configuration
problem?
Something I'm missing in the code? I'm running
virtuoso-opensource-5.0.8 on 64-bit Ubuntu, using the default
virtuoso.ini unmodified.
Please let me know if any more information would help, and thanks in
advance. Cheers,
Luke
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