我試圖將我的RDF模型加載到JENA SDB中。我已經完成了連接(我認爲它應該沒問題)。 我不知道爲什麼,但它不正確。我認爲這是因爲我已經導入到我的項目中的ARQ庫,但我不知道。將RDF模型加載到Jena SDB
這裏的代碼:
String RDF_FILE = "./prova_rules_M_rdf.owl";
String className = "com.mysql.jdbc.Driver";
String DB_URL = "jdbc:mysql://localhost:3306/prova_rules";
String DB_USER = "root";
String DB_PASSWD = "";
// create store description
StoreDesc storeDesc = new StoreDesc(LayoutType.LayoutTripleNodesHash,DatabaseType.MySQL);
// load database driver
try {
Class.forName(className);
System.out.println("JDBC driver load successfully!");
} catch (Exception e) {
e.printStackTrace();
}
// create SDBConnection
SDBConnection sdbConnection = new SDBConnection(DB_URL,DB_USER,DB_PASSWD);
// connect to store
Store store = SDBFactory.connectStore(sdbConnection,storeDesc);
// connect store to dataset
Dataset dataset = SDBFactory.connectDataset(store);
// prepare the model
Model tmpModel = ModelFactory.createDefaultModel();
FileManager.get().readModel(tmpModel,RDF_FILE,"OWL");
System.out.println(tmpModel.size());
// add the model into the dataset
dataset.getDefaultModel().add(tmpModel);
// all done ... hopefully
store.close();
}
在這裏的錯誤:在螺紋
異常 「主」 java.lang.NoSuchMethodError:com.hp.hpl.jena.query.ARQ.getContext() LCOM /馬力/ HPL /耶拿/ SPARQL/util的/關聯; at com.hp.hpl.jena.sdb.SDB.initWorker(SDB.java:87) at com.hp.hpl.jena.sdb.SDB。(SDB.java:61) at com.hp.hpl .jena.sdb.store.StoreFactory。(StoreFactory.java:40) at com.hp.hpl.jena.sdb.SDBFactory.connectStore(SDBFactory.java:117) at CreateOntModel.main(CreateOntModel.java:94)