Hi Patrick,
It was working yesterday for the most of the object properties in DBpedia
(except for 5 of them) and today it seems like working for very few object
properties. A simple transitive restriction check fails for example on
http://dbpedia.org/ontology/genre. I am doing some experiment on these object
properties these days and it seems like often the server does not respond. For
the above property, it does not look like even the server is attempting to
process the query.
Both Dbpedia sparql endpoint in browser and also API calls using Jena ARQ
fail to get any result. Is there any other alternative instead of this sparql
endpoint that we can try? Thank you for your concerns.
Kalpa Gunaratna
----- Original Message -----
From: Patrick van Kleef <[email protected]>
Date: Tuesday, June 21, 2011 11:50 am
Subject: Re: [Dbpedia-discussion] query timeout error.
To: Dalkandura Arachchige Gunaratna <[email protected]>
Cc: [email protected]
> Hi Kalpa Gunaratna,
>
> > It was working last week but again not
> working for couple of
> > days. I am using http://dbpedia.org/sparql endpoint to
> query using
> > a java program. Is that a server issue or something else?
> Thank You.
>
> This appears to be a server side issue and we are currently
> looking
> into the cause.
>
> Please check as it should work at this time.
>
>
> Patrick
>
> > ----- Original Message -----
> > From: Patrick van Kleef <[email protected]>
> > Date: Wednesday, June 15, 2011 6:37 pm
> > Subject: Re: [Dbpedia-discussion] query timeout error.
> > To: Dalkandura Arachchige Gunaratna <[email protected]>
> > Cc: [email protected]
> >
> > > HI,
> > >
> > > > I am trying to run a query through a java program using Jena
> > > ARQ
> > > > API. Following is the query that I run through a java program.
> > > >
> > > > select distinct ?s ?o where { ?s
> > > <http://dbpedia.org/ontology/
> > > > team> ?o1 . ?o1 <http://dbpedia.org/ontology/team> ?o . ?s
> > > <http://dbpedia.org/ontology/team
> > > > > ?o .}
> > > >
> > > > sometimes this works and sometimes doesn't. I do not know
> > > the
> > > > problem. Even in the sparql endpoint, sometimes it doesn't
> > > work. The
> > > > exception I get from java program is HttpException: 500
> > > SPARQL
> > > > Request Failed. In sparql endpoint it says timeout. I
> > > increased the
> > > > timeout in the web interface but it doesn't help.
> > > >
> > > > I want to run this query for a list of properties and the
> > > code
> > > > breaks when it executes the above query since it returns
> > > an
> > > > exception. Do you have any clue what is going on?
> > >
> > > Assuming you are running your query against the
> > > http://dbpedia.org/sparql
> > > endpoint, could you retry your query and let me
> know if
> > > it now works.
> > >
> > > Patrick
>
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