This list is not a code writing service nor are we mind readers >From the unclear description given your code appears that it should do what you describe
If it doesn't then you need to explain what behaviour you see (error, incorrect results etc) and what behaviour you expected to see Rob On 06/08/2015 16:05, "Евгений =)" <[email protected]> wrote: >Hello again! >I need to do next staff: read all "name" fields from MY_TDB, do some >calculations with this "name" and save results to MY_TDB. >But I need to read and save on the fly, eg read on "name" -> do >calculaions >-> save results -> read next "name" -> calculations -> save result ... > >Here is the example code: >public class TestTdbTransactionsReadWrite { > public static void main(String[] args) { > Dataset dataset = TDBFactory.createDataset(); > dataset.begin(ReadWrite.WRITE); > DatasetGraph datasetGraph = dataset.asDatasetGraph(); > Graph graph = datasetGraph.getDefaultGraph(); > > // Fill graph. > graph.add( > new Triple( > NodeFactory.createURI("http://example/unit13";), > NodeFactory.createURI("http://example/name";), > NodeFactory.createLiteral("Unit 13", "en") > ) > ); > > graph.add( > new Triple( > NodeFactory.createURI("http://example/unit13";), > NodeFactory.createURI("http://example/type";), > NodeFactory.createURI("http://example/robot";) > ) > ); > > graph.add( > new Triple( > NodeFactory.createURI("http://example/unit13";), > NodeFactory.createURI("http://example/creationYear";), > NodeFactory.createURI("http://example/2015";) > ) > ); > > // Test. > String qs1 = "SELECT * { ?s <http://example/name> ?o }"; > try (QueryExecution qExec = QueryExecutionFactory.create(qs1, >dataset)) { > ResultSet rs = qExec.execSelect(); > > while (rs.hasNext()) { > QuerySolution qs = rs.next(); > RDFNode nodeSubject = qs.get("s"); > RDFNode nodeObject = qs.get("o"); > if (nodeSubject.isURIResource() && >nodeObject.isLiteral()) { > String str = nodeObject.asLiteral().getString(); > > graph.add( > new Triple( > >NodeFactory.createURI(nodeSubject.asResource().getURI()), > NodeFactory.createURI("http://example/value";), > >NodeFactory.createLiteral(String.valueOf(str.length())) > ) > ); > } > } > > dataset.commit(); > } finally { > dataset.end(); > } > > RDFDataMgr.write(System.out, graph, RDFFormat.NTRIPLES); > } >} > >https://github.com/Hronom/test-jena
