Hi, I am having a strange error while attempting to initialise a TDB2 dataset:
TDB2Factory.connectDataset(tdb2location); tdb2location existing. However, I am getting the error below, which I don't understand. It seems related to some file system issue, but I can initialise and connect to TDB2 instances fine in other parts of the app, on the same host (my laptop, btw...). Any clue? Thx! Enrico --- java.lang.ExceptionInInitializerError: null at org.apache.jena.tdb2.params.StoreParams.getDftStoreParams(StoreParams.java:121) at org.apache.jena.tdb2.store.TDB2StorageBuilder.build(TDB2StorageBuilder.java:91) at org.apache.jena.tdb2.sys.StoreConnection.make(StoreConnection.java:93) at org.apache.jena.tdb2.sys.StoreConnection.connectCreate(StoreConnection.java:61) at org.apache.jena.tdb2.sys.DatabaseOps.createSwitchable(DatabaseOps.java:96) at org.apache.jena.tdb2.sys.DatabaseOps.create(DatabaseOps.java:77) at org.apache.jena.tdb2.sys.DatabaseConnection.build(DatabaseConnection.java:103) at org.apache.jena.tdb2.sys.DatabaseConnection.lambda$make$0(DatabaseConnection.java:74) at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660) ~[?:1.8.0_292] at org.apache.jena.tdb2.sys.DatabaseConnection.make(DatabaseConnection.java:74) at org.apache.jena.tdb2.sys.DatabaseConnection.connectCreate(DatabaseConnection.java:63) at org.apache.jena.tdb2.sys.DatabaseConnection.connectCreate(DatabaseConnection.java:54) at org.apache.jena.tdb2.DatabaseMgr.DB_ConnectCreate(DatabaseMgr.java:41) at org.apache.jena.tdb2.DatabaseMgr.connectDatasetGraph(DatabaseMgr.java:46) at org.apache.jena.tdb2.TDB2Factory.connectDataset(TDB2Factory.java:52) at org.apache.jena.tdb2.TDB2Factory.connectDataset(TDB2Factory.java:70) [...] Caused by: java.lang.NullPointerException at org.apache.jena.tdb2.sys.SystemTDB.determineFileMode(SystemTDB.java:379) at org.apache.jena.tdb2.sys.SystemTDB.fileMode(SystemTDB.java:357) at org.apache.jena.tdb2.params.StoreParamsConst.<clinit>(StoreParamsConst.java:33) -- Enrico Daga, PhD www.enridaga.net<http://www.enridaga.net> | @enridaga SPARQL Anything http://sparql-anything.cc Polifonia http://polifonia-project.eu SPICE http://spice-h2020.eu Open Knowledge Graph http://data.open.ac.uk<http://data.open.ac.uk/> Senior Research Fellow, Knowledge Media Institute, STEM Faculty The Open University Level 4 Berrill Building, Walton Hall, Milton Keynes, MK7 6AA Direct: +44 (0) 1908 654887
