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[protege-owl] Database backend back to OWL/RDF

Timothy Redmond tredmond at
Mon Feb 9 17:27:23 PST 2009

Hi Bo - 

Sorry for the silence.  I was going to look at this today for sure but I
am running behind.  One (gross kludged hacky) thing that I thought of
was that the pprj file for a database project and for a file based
project are not too different.  Essentially they differ in their factory
and their sources (e.g. database url, table names, file names, etc).
It might not be too difficult to maintain one version and converting
that copy to the other format with something like a sed (or better a
Protege) script.  But I am hoping to look at this tonight or tomorrow
and send you something more useful and hopefully less hacky.


On Mon, 2009-02-09 at 14:35 +0100, Bo De Lange wrote:
> Silence from the Protege community....
> Tania/Timothy, could you please look into this briefly, since we need
> a local RDF/OWL file project to release a build of our own software
> project, soon-ish. I've worked around it for now by maintaining two
> versions of the .pprj file a database version and a local version, in
> which I have to maintain identical changes to forms, multi slot
> browser display patterns etc. 
> Thanks, 
> Bo
> On Tue, Feb 3, 2009 at 1:17 PM, Bo De Lange <bodelange at>
> wrote:
>         Hi there, 
>         we are running a database backend Server-Client setup (3.4
>         beta, build 519). Regularly, we require a local copy of the
>         ontology. Clients can easily obtain the latest .owl file by
>         File:Export to Format: OWL. However, they also require the
>         latest .pprj to see all the forms and multislot browser
>         patterns correctly in the local copy.
>         For the database backend version, we have a Project-dba.pprj
>         file, which will not work on local machines without access to
>         the SQL database. So we need to convert the whole dba project
>         on the server machine to an RDF/OWL file project that we can
>         copy and use elsewhere. To do this, I've started the dba
>         project locally on the server machine, and chose File:Convert
>         project to Format:OWL/RDF Files. However, and this will be a
>         familiar problem for Tania, the conversion crashes on the Jena
>         writer. Somehow we require the Protege Native writer, which I
>         cannot invoke from this menu option. 
>         Is there a quick solution?
>         Ideally, we would like for it to be possible to do the export
>         to OWL/RDF files from the client side in the server setup.
>         Thanks,
>         Bo
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