Re: [SMW-devel] SMW and Virtuoso configuration ?

[Markus K. <ma...@se...>]

Dear Giovanni,

we are still trying to figure out why Virtuoso does not work with SMW in 
various cases. It cannot be a difficult problem but some support on the 
user side for testing would help to speed up diagnosis.

As a first measure, I suggest you turn off $smwgSparqlDataEndpoint; 
i.e., you leave the setting empty. This will use SPARQL update instead 
of the SPARQL-over-HTTP protocol for writing. Maybe it works, maybe it 
creates more helpful errors. Last time we tried, Virtuoso had trouble 
with the SPARQL syntax for named graphs in Updates. If it still fails to 
work, we could try and use the non-standard SPARUL-style syntax with 
Virtuoso.

Markus


On 06/12/11 14:35, solab wrote:
> Hi all,
>
> It was my intention to see how SMW perform on the 4store and on the
> Virtuoso rdf store.
>
> Runing 4store was simple but i have some difficulties with virtuoso.
>
> I run the SMW_refreshData.php, after  virtuoso configuration,  but  no
> errors are visible and no  data from the inline queries.
>
> Does somebody have a idea what i have to check or what could be wrong ?
>
> Thanks
> Giovanni
>
> PS my conf
>
> ==sparql Local settings ==
> $smwgDefaultStore = 'SMWSparqlStore';
> $smwgSparqlDatabase = 'SMWSparqlDatabase';
> $smwgSparqlQueryEndpoint = 'http://localhost:8890/sparql';
> $smwgSparqlUpdateEndpoint = 'http://localhost:8890/update';
> $smwgSparqlDataEndpoint = 'http://localhost:8890/dataspace'; // can be empty
>
>
> ==sparql part my viruoso.ini==
>
> [SPARQL]
> ExternalQuerySource             = 1
> ExternalXsltSource              = 1
> DefaultGraph                    = http://localhost:8890/dataspace
> ImmutableGraphs                 = http://localhost:8890/dataspace
> ResultSetMaxRows           = 10000
> MaxQueryCostEstimationTime = 400        ; in seconds
> MaxQueryExecutionTime      = 60 ; in seconds
> DefaultQuery               = select distinct ?Concept where {[] a ?Concept}
> DeferInferenceRulesInit    = 0  ; controls inference rules loading
>
>
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