Re: [Virtuoso-users] Query optimization, possible indexing?

2018-01-25 Thread Sergey Malinin
Hi Jason, In you sources: > Query sparql = QueryFactory.create(qStr); > VirtuosoQueryExecution vqd = VirtuosoQueryExecutionFactory.create(sparql, graph); Based on this, SPARQL query will be parsed by Jena ARQ and after this, it will be converted back to String before send to Vi

Re: [Virtuoso-users] Query optimization, possible indexing?

2018-01-25 Thread Henrik Schmidt
If there will be a fix for this it would be nice this solution for the jena provider will be also added to the main repo : https://github.com/openlink/virtuoso-opensource/issues/687 Am 25.01.2018 um 11:19 schrieb Hugh Williams: Hi Quentin, Thanks for the input, I see what you mean as the jena

Re: [Virtuoso-users] Query optimization, possible indexing?

2018-01-25 Thread Hugh Williams
Hi Quentin, Thanks for the input, I see what you mean as the jena program is executing the query: String qStr = "PREFIX base: PREFIX xsd: SELECT ?s {?s base:name \"test_sensor\"^^xsd:string}"; and does actually return results whe

Re: [Virtuoso-users] Query optimization, possible indexing?

2018-01-25 Thread Jason Koh
Hugh, Thanks for taking a look at this problem. It's been painful to me... Let me know once you get an idea on this or if you need any help from my side. Thanks! With regards, Jason Koh cseweb.ucsd.edu/~jbkoh On Wed, Jan 24, 2018 at 3:34 PM, Hugh Williams wrote: > Hi Jason, > > I have been a