要让Jena在本地建立索引：
public static final String tdbDirectory = "C:\TDBLoadGeoCoordinatesAndLabels";public static final String dbdump0 = "C:\Users\Public\documents\TDB\dbpedia_3.8\dbpedia_3.8.owl";public static final String dbdump1 = "C:\Users\Public\documents\TDB\geo_coordinates_en\geo_coordinates_en.nt"; ...Model tdbModel = TDBFactory.createModel(tdbDirectory);<n>FileManager.get().readModel( tdbModel, dbdump0);FileManager.get().readModel( tdbModel, dbdump1, "N-TRIPLES");FileManager.get().readModel( tdbModel, dbdump2, "N-TRIPLES");FileManager.get().readModel( tdbModel, dbdump3, "N-TRIPLES");FileManager.get().readModel( tdbModel, dbdump4, "N-TRIPLES");FileManager.get().readModel( tdbModel, dbdump5, "N-TRIPLES");FileManager.get().readModel( tdbModel, dbdump6, "N-TRIPLES");tdbModel.close();
查询耶拿：
String queryStr = "dbpedia query ";Dataset dataset = TDBFactory.createDataset(tdbDirectory);Model tdb = dataset.getDefaultModel();Query query = QueryFactory.create(queryStr);QueryExecution qexec = QueryExecutionFactory.create(query, tdb);ResultSet results = qexec.execSelect();while (results.hasNext()) { // Do something important}qexec.close();tdb.close() ;
