Thanks very much for the response. I have been able to persist the ontology and triples successfully now using either methods.
Best, -Zhiyun On Tue, Oct 1, 2013 at 3:42 AM, Andy Seaborne <[email protected]> wrote: > On 30/09/13 16:23, Zhiyun Qian wrote: > >> Please help...A friendly reminder... >> > > Whatelse have you tried? > > Responses come from volunteers - there is no gauarnteed response time. > > > >> >> >> On Sun, Sep 29, 2013 at 11:33 PM, Zhiyun Qian <[email protected]> wrote: >> >> Hi there, >>> >>> I have been trying to persist my ontology (a .owl file that I defined on >>> my own) and some models I created based on the it. However, I could't >>> seem >>> to read what I have previously written. >>> >>> The way I wrote to TDB is as follows: >>> >>> Dataset dataset = TDBFactory.createDataset(dir); >>> OntModel m = ModelFactory.**createOntologyModel( OntModelSpec.OWL_MEM, >>> null >>> ); >>> dataset.addNamedModel(graph_**name, m); >>> FileManager.get().readModel(m, "ontology/test.owl"); >>> >>> ... add triples to model m. >>> >>> TDB.sync(dataset); >>> >>> Did I do anything wrong here? I was trying to find some examples on jena >>> documentation. However there's on link on >>> http://jena.apache.org/**documentation/ontology/<http://jena.apache.org/documentation/ontology/>that >>> points to >>> http://jena.apache.org/**documentation/examples/** >>> persistent-ont-model/index.**html<http://jena.apache.org/documentation/examples/persistent-ont-model/index.html>which >>> is broken...Please help... >>> >> > Adding a model copies the contents into the database. But you added > material after the copy, so it's only in the in-memory m. > > Use Dataset.getNamedModel, which is a view of the database, then, > optiomnally, create the OntModel with that as the base, then read into it. > > Or reverse the two lines for read and add above. > > Andy > >
