Examples with Dataset org.apache.jena.query.Dataset used on opensource projects

Example 46 with Dataset

use of org.apache.jena.query.Dataset in project jena by apache.

the class TestDatasetGraphInMemoryBasic method prefixesAreManaged.

@Test
public void prefixesAreManaged() {
    final Node graphName = createURI("http://example/g");
    final DatasetGraph dsg = emptyDataset();
    dsg.addGraph(graphName, createGraphMem());
    final Dataset dataset = DatasetFactory.wrap(dsg);
    Model model = dataset.getNamedModel(graphName.getURI());
    final String testPrefix = "example";
    final String testURI = "http://example/";
    model.setNsPrefix(testPrefix, testURI);
    assertEquals(testURI, model.getNsPrefixURI(testPrefix));
    model.close();
    model = dataset.getNamedModel(graphName.getURI());
    final String nsURI = dataset.getNamedModel(graphName.getURI()).getNsPrefixURI(testPrefix);
    assertNotNull(nsURI);
    assertEquals(testURI, nsURI);
}

Example 47 with Dataset

use of org.apache.jena.query.Dataset in project jena by apache.

the class AbstractTestDataset method dataset_01.

@Test
public void dataset_01() {
    Dataset ds = createDataset();
    assertNotNull(ds.getDefaultModel());
    assertNotNull(ds.asDatasetGraph());
}

Example 48 with Dataset

use of org.apache.jena.query.Dataset in project jena by apache.

the class AbstractTestDataset method dataset_03.

@Test
public void dataset_03() {
    Dataset ds = createDataset();
    ds.setDefaultModel(model2);
    assertTrue(model2.isIsomorphicWith(ds.getDefaultModel()));
}

Example 49 with Dataset

use of org.apache.jena.query.Dataset in project jena by apache.

the class AbstractTestDataset method dataset_04.

@Test
public void dataset_04() {
    String graphName = "http://example/";
    Dataset ds = createDataset();
    ds.addNamedModel(graphName, model1);
    assertTrue(ds.containsNamedModel(graphName));
    List<String> x = Iter.toList(ds.listNames());
    assertEquals(1, x.size());
    assertEquals(graphName, x.get(0));
    assertFalse(model1.isIsomorphicWith(ds.getDefaultModel()));
    Model m = ds.getNamedModel(graphName);
    assertNotNull(m);
    assertTrue(model1.isIsomorphicWith(m));
    ds.removeNamedModel(graphName);
    // Not getNamedModel and test for null as some datasets are "auto graph creating"
    assertFalse(ds.containsNamedModel(graphName));
}

Example 50 with Dataset

use of org.apache.jena.query.Dataset in project jena by apache.

the class sse_query method exec.

@Override
protected void exec() {
    Op op = modAlgebra.getOp();
    if (op == null) {
        System.err.println("No query expression to execute");
        throw new TerminationException(9);
    }
    Dataset dataset = modDataset.getDataset();
    // Check there is a dataset.
    if (dataset == null)
        dataset = DatasetFactory.createGeneral();
    modTime.startTimer();
    DatasetGraph dsg = dataset.asDatasetGraph();
    if (printOp || printPlan) {
        if (printOp) {
            divider();
            IndentedWriter out = new IndentedWriter(System.out, true);
            op.output(out);
            out.flush();
        }
        if (printPlan) {
            QueryIterator qIter = Algebra.exec(op, dsg);
            Plan plan = new PlanOp(op, null, qIter);
            divider();
            IndentedWriter out = new IndentedWriter(System.out, false);
            plan.output(out);
            out.flush();
        }
    //return ;
    }
    // Do not optimize.  Execute as-is.
    QueryExecUtils.execute(op, dsg, modResults.getResultsFormat());
    long time = modTime.endTimer();
    if (modTime.timingEnabled())
        System.out.println("Time: " + modTime.timeStr(time));
}