Indeed, I had overlooked the need of an event loop... The query's
working fine. Thanks.
Cheers
Stéphane
> Hi Stephane,
>
> On 05/11/2010 10:54 AM, Stéphane Laurière wrote:
>> I'm trying to execute an AsyncQuery using the Python bindings with the
>> snippet below taken from [1] but I get the following error: "Soprano"
>> Error in thread "Invalid iterator ID.", and the query slot is never
>> called. Any idea why? The same query executed in sync mode works fine.
>
>> def query(self):
>> query = Soprano.Util.AsyncQuery.executeQuery(model, self.sparql,
>
> you forgot the "self." query is probably garbage collected after this
> method. Not sure, this is a guess...
>
>> Soprano.Query.QueryLanguageSparql)
>> QObject.connect( query,
>> SIGNAL("nextReady(Soprano.Util.AsyncQuery*
>> ) "), self.queryNextReadySlot)
>
> you know that you can use the fancy way:
>
> self.query.nextReady.connect(self.queryNextReadySlot)
>
> :)
>
>> if __name__ == "__main__":
>>
>> nepomukType = Nepomuk.Types.Class(Soprano.Vocabulary.RDFS.Resource())
>> term = Nepomuk.Query.ResourceTypeTerm(nepomukType)
>> query = Nepomuk.Query.Query(term)
>> sparql = query.toSparqlQuery()
>> asyncmodel = AsyncResourceLoadingModel(sparql)
>> asyncmodel.query()
>
> Also you never enter any event loop. So the app will quit before any
> slot is executed.
>
> Cheers,
> Sebastian
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>
>
--
Stéphane Laurière
Mandriva http://mandriva.com
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