Hi, it says: "Premature end of file". Maybe, the result from your query is too big and/or the server times out.
You can try to run the same query without using Jena and just have the response in a file for inspection. Paolo Gunaratna, Dalkandura Arachchige Kalpa Shashika Silva wrote: > Hi, > I am querying Dbpedia for instances and properties using the sparql > endpoint http://dbpedia.org/sparql and I use Jena libraries in Java. Recently > I got the following error while querying and it does not happen for all > queries (all queries are the same format) but most of them. Following is the > error I get. Anyone knows what is the cause of this? > > > > WARN [main] (ALog.java:58) - XMLStreamException: ParseError at > [row,col]:[1,1] > Message: Premature end of file. > javax.xml.stream.XMLStreamException: ParseError at [row,col]:[1,1] > Message: Premature end of file. > at > com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl.next(XMLStreamReaderImpl.java:592) > at > com.hp.hpl.jena.sparql.resultset.XMLInputStAX$ResultSetStAX.skipTo(XMLInputStAX.java:305) > at > com.hp.hpl.jena.sparql.resultset.XMLInputStAX$ResultSetStAX.skipTo(XMLInputStAX.java:297) > at > com.hp.hpl.jena.sparql.resultset.XMLInputStAX$ResultSetStAX.init(XMLInputStAX.java:185) > at > com.hp.hpl.jena.sparql.resultset.XMLInputStAX$ResultSetStAX.<init>(XMLInputStAX.java:178) > at > com.hp.hpl.jena.sparql.resultset.XMLInputStAX.worker(XMLInputStAX.java:137) > at > com.hp.hpl.jena.sparql.resultset.XMLInputStAX.<init>(XMLInputStAX.java:100) > at com.hp.hpl.jena.sparql.resultset.XMLInput.make(XMLInput.java:64) > at com.hp.hpl.jena.sparql.resultset.XMLInput.fromXML(XMLInput.java:33) > at com.hp.hpl.jena.sparql.resultset.XMLInput.fromXML(XMLInput.java:28) > at > com.hp.hpl.jena.query.ResultSetFactory.fromXML(ResultSetFactory.java:225) > at > com.hp.hpl.jena.sparql.engine.http.QueryEngineHTTP.execSelect(QueryEngineHTTP.java:132) > at > org.knoesis.searchenhancer.InformationProcessor.queryDBpedia_object(InformationProcessor.java:795) > at > org.knoesis.searchenhancer.InformationProcessor.isObjectsMatching(InformationProcessor.java:381) > at > org.knoesis.searchenhancer.InformationProcessor.processLargeScale(InformationProcessor.java:258) > at > org.knoesis.searchenhancer.InformationProcessor.main(InformationProcessor.java:61) > com.hp.hpl.jena.sparql.resultset.ResultSetException: Not an ResultSet result >
