CODEWITHSUNDEEP
javaquery-optimizationrdfjena
Soheila DehghanZadeh
Soheila DehghanZadeh

Reputation: 419

convert jena model to jena tdb

I created a model in jena with this java code 

    Model m = ModelFactory.createDefaultModel();
    Resource a1 = m.createResource("<http://Actor1>");
    Resource a2 = m.createResource("<http://Actor2>");
    Resource a3 = m.createResource("<http://Actor3>");
    Property p3 = m.createProperty("<http://MovieTitle>");

    Resource m1 = m.createResource("<http://Movie1>");
    m1.addProperty(p3, "<http://M1>");
    Resource m2 = m.createResource("<http://Movie2>");
    m2.addProperty(p3, "<http://M2>");
    Resource m3 = m.createResource("<http://Movie3>");
    m3.addProperty(p3, "<http://M3>");
    Resource m4 = m.createResource("<http://Movie4>");
    m4.addProperty(p3, "<http://M4>");

    Property p1 = m.createProperty("<http://dateOfbirth>");
    Property p2 = m.createProperty("<http://played>");

    m.add(a1,p1 , "1980");
    m.add(a2,p1 , "1981");
    m.add(a3,p1 , "1982");

    m.add(a1,p2 , m1);
    m.add(a1,p2 , m2);
    m.add(a1,p2 , m3);
    m.add(a1,p2 , m4);
    m.add(a2,p2 , m1);
    m.add(a2,p2 , m3);
    m.add(a3,p2 , m1);
    m.add(a3,p2 , m3);
    m.add(a3,p2 , m4);

now i want to convert this model into a jena tdb to create the stats.opt file for optimizing queries executed over this model. I know that rdf files can be loaded into tdb and create stats.opt using the command line. but i want to do it with my code. Is there a way to do it? Thanks!

Upvotes: 0

Views: 250

Answers (1)

Bahar
Bahar

Reputation: 834

You can create your tdb in jena using --> 

// First create an empty tdb 
Dataset tdb = TDBFactory.createDataset(path2NewTdb);

// Then get its Model
Model tdbModel = tdb.getDefaultModel();

// Then update tdbModel. For example use the code you wrote
// above or if you already have a model use tdbModel.add(anotherModel)
// After that make sure to close everything

tdbModel.close();
tdb.close();

Upvotes: 1

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