Hi Daniel, the problem in your query is the Filter clause, so if you can change it, that will make your query more handy.
On 10/15/2011 05:11 PM, Gerber Daniel wrote: > Hi Patrick, > Thanks for the quick reply. > > Could you tell me this setting you were talking about? Would be really cool > to have this also working on the dbpedia-live instance! > > Cheers, > Daniel > > On Oct 15, 2011, at 5:06 PM, Patrick van Kleef wrote: > >> Hi Daniel, >> >>> I'm executing the following SPARQL query in JAVA... >>> >>> PREFIX rdf:<http://www.w3.org/1999/02/22-rdf-syntax-ns#> >>> PREFIX rdfs:<http://www.w3.org/2000/01/rdf-schema#> >>> SELECT ?s ?sl ?p ?o ?ol ?range ?domain >>> WHERE { >>> ?s rdf:type<http://dbpedia.org/ontology/Person> . >>> ?s rdfs:label ?sl . >>> ?s ?p ?o . >>> ?o rdfs:label ?ol . >>> FILTER ( langMatches( lang(?sl), "de" )&& langMatches( lang(?ol), >>> "de" ) ) >>> ?p rdfs:range ?range . >>> ?p rdfs:domain ?domain . } >>> LIMIT 10000 // tried different LIMITs ranging from 1000 - 100.000 >>> OFFSET 0 >>> >>> ... like this: >>> >>> QueryEngineHTTP qexec = new QueryEngineHTTP(SPARQL_ENDPOINT_URI, query); >>> qexec.addDefaultGraph(DBPEDIA_DEFAULT_GRAPH); >>> >>> But I get, regardless of the endpoint I'm choosing, >>> http://dbpedia.org/sparql or http://live.dbpedia.org/sparql, only this >>> error message. What is this error? Is there a way to avoid it? >>> >>> Exception in thread "main" HttpException: HttpException: 502 Proxy Error: >>> HttpException: 502 Proxy Error >>> at >>> com.hp.hpl.jena.sparql.engine.http.HttpQuery.execCommon(HttpQuery.java:340) >>> at >>> com.hp.hpl.jena.sparql.engine.http.HttpQuery.execGet(HttpQuery.java:190) >>> at com.hp.hpl.jena.sparql.engine.http.HttpQuery.exec(HttpQuery.java:147) >>> at >>> com.hp.hpl.jena.sparql.engine.http.QueryEngineHTTP.execSelect(QueryEngineHTTP.java:117) >>> at >>> de.uni_leipzig.simba.boa.backend.configuration.command.impl.WriteRelationToFileCommand.getKnowledge(WriteRelationToFileCommand.java:208) >>> at >>> de.uni_leipzig.simba.boa.backend.configuration.command.impl.WriteRelationToFileCommand.execute(WriteRelationToFileCommand.java:49) >>> at >>> de.uni_leipzig.simba.boa.backend.configuration.command.impl.WriteRelationToFileCommand.main(WriteRelationToFileCommand.java:38) >>> Caused by: HttpException: 502 Proxy Error >>> at >>> com.hp.hpl.jena.sparql.engine.http.HttpQuery.execCommon(HttpQuery.java:301) >>> ... 6 more >> >> There was a setting on dbpedia.org which was too small for some header >> responses leading to a 502 error which may have caused your original >> problem. This setting has now been fixed. >> >> >> However when i run your query against the http://dbpedia.org/sparql endpoint >> i am now getting: >> Virtuoso 42000 Error The estimated execution time 3212 (sec) exceeds the >> limit of 1500 (sec). >> >> Please check if you can simplify your query or use an alternative endpoint >> like our http://lod.openlinksw.com/sparql which has the same data. >> >> Patrick >> --- >> OpenLink Software >> > > ------------------------------------------------------------------------------ > All the data continuously generated in your IT infrastructure contains a > definitive record of customers, application performance, security > threats, fraudulent activity and more. Splunk takes this data and makes > sense of it. Business sense. IT sense. Common sense. > http://p.sf.net/sfu/splunk-d2d-oct > _______________________________________________ > Dbpedia-discussion mailing list > Dbpedia-discussion@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion > -- Kind Regards Mohamed Morsey Department of Computer Science University of Leipzig ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct _______________________________________________ Dbpedia-discussion mailing list Dbpedia-discussion@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
