Thanks for the prompt answer.
On Mon 2 Mar, 2020 11:34 pm Rob Vesse, <[email protected]> wrote: > It's because you are trying to close the model after you've committed the > transaction so the error message is quite correct in that you are no longer > in a transaction at that point > > Put the dataset.commit() after the model.close() line and it will work > > Rob > > On 02/03/2020, 16:16, "Diptendu Dutta" <[email protected]> wrote: > > I have the following code > > public class JenaProcessor { > > static Dataset dataset = null; > static String ns = "http://www.lke.com/lke.owl#";; > > static { > try { > dataset = > TDBFactory.createDataset("C:\\Users\\Diptendu\\Desktop\\lke"); > } > catch(Exception ex) { > ex.printStackTrace(); > } > } > > static public void clearKnowledgeGraph(String corpus_file_id) { > dataset.begin(ReadWrite.WRITE) ; > Model model = null; > try { > model = dataset.getNamedModel(corpus_file_id); > model.removeAll(); > dataset.commit(); > if( model != null ) model.close(); > } > catch(Exception ex) { > ex.printStackTrace(); > } > finally { > dataset.end(); > } > } > } > > model.close() is causing the error TDBTransactionException: Not in a > transaction > > org.apache.jena.tdb.transaction.TDBTransactionException: Not in a > transaction > at > > org.apache.jena.tdb.transaction.DatasetGraphTransaction.get(DatasetGraphTransaction.java:138) > at > > org.apache.jena.tdb.transaction.DatasetGraphTransaction.getDatasetGraphToQuery(DatasetGraphTransaction.java:84) > at > > org.apache.jena.tdb.store.GraphTxnTDB.getDatasetGraphTDB(GraphTxnTDB.java:51) > at org.apache.jena.tdb.store.GraphTDB.sync(GraphTDB.java:128) > at org.apache.jena.tdb.store.GraphTDB.close(GraphTDB.java:133) > at org.apache.jena.rdf.model.impl.ModelCom.close(ModelCom.java:1494) > at > knowledgegraph.JenaProcessor.clearKnowledgeGraph(JenaProcessor.java:120) > > What do I need to do? > > Regards, > > Diptendu Dutta > > > > > >
