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
