You are viewing a plain text version of this content. The canonical link for it is here.

Posted to users@jena.apache.org by Charles Li <ch...@gmail.com> on 2013/08/27 07:19:25 UTC

Always got TDB model size = 0

Hi, Jena experts:

Jena v2.10.1 on Windows 7.

(1) Run TDB loader: loadRDF.cmd myDir myRdfXML.xml.

(2) Create a TDB sitting on "myDir":
     model = TDBFactory.createDataset("myDir").getDefaultModel();

However, model.size() will always give 0! And any query won't return
anything!

If I start Fuseki on "myDir": fuseki-server.bat --loc myDir
--home=<fuseki_home> /myDir, I can run the same query and return rows.

Is there anything wrong with my code in step (2)?

Thanks a lot for your help!!
- Charles

Re: Always got TDB model size = 0

Posted by Andy Seaborne <an...@apache.org>.

On 27/08/13 06:19, Charles Li wrote:
> Hi, Jena experts:
>
> Jena v2.10.1 on Windows 7.
>
> (1) Run TDB loader: loadRDF.cmd myDir myRdfXML.xml.

Don't know what that does.

>
> (2) Create a TDB sitting on "myDir":
>       model = TDBFactory.createDataset("myDir").getDefaultModel();
>
> However, model.size() will always give 0! And any query won't return
> anything!
>
> If I start Fuseki on "myDir": fuseki-server.bat --loc myDir
> --home=<fuseki_home> /myDir, I can run the same query and return rows.
>
> Is there anything wrong with my code in step (2)?

Maybe "myDir" is naming a different directory, maybe because the current 
working directory is different.  The details matter here I'm afraid.  A 
complete, minimal, example would help.

	Andy

>
> Thanks a lot for your help!!
> - Charles
>