Package com.hp.hpl.jena.query

Examples of com.hp.hpl.jena.query.QueryExecution.execSelect()

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    System.out.println("RESULTS:");
   
    Query query = QueryFactory.create(Q);

    QueryExecution qe = QueryExecutionFactory.create(query, model);
    ResultSet results = qe.execSelect();
    ResultSetFormatter.out(System.out, results, query);

    qe.close();
  }
 
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    @Test(expected=QueryCancelledException.class)
    public void test_Cancel_API_1()
    {
        QueryExecution qExec = makeQExec("SELECT * {?s ?p ?o}") ;
        try {
            ResultSet rs = qExec.execSelect() ;
            assertTrue(rs.hasNext()) ;
            qExec.abort();
           
            assertTrue(rs.hasNext()) ;
            rs.nextSolution();
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    public void test_Cancel_API_2()
    {
        QueryExecution qExec = makeQExec("PREFIX ex: <" + ns + "> " +
        "SELECT * {?s ?p ?o . FILTER ex:wait(100) }") ;
        try {
            ResultSet rs = qExec.execSelect() ;
            assertTrue(rs.hasNext()) ;
            qExec.abort();
            assertTrue(rs.hasNext()) ;
            rs.nextSolution();
            assertFalse("Results not expected after cancel.", rs.hasNext()) ;
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        String query = "SELECT (<http://example/square>(2) AS ?square) { }";
        Query q = QueryFactory.create(query);
       
        QueryExecution qe = QueryExecutionFactory.create(q, ModelFactory.createDefaultModel());
        ResultSet rset = qe.execSelect();
        Assert.assertTrue(rset.hasNext());
        Binding b = rset.nextBinding();
        Assert.assertFalse(rset.hasNext());
        qe.close();
       
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    Dataset ds = DynamicDatasets.dynamicDataset(q.getDatasetDescription(), this.ds, false);
   
    //Then execute the query
    QueryExecution exec = QueryExecutionFactory.create(q, ds);
   
    ResultSet results = exec.execSelect();
    List<String> found = new ArrayList<String>();
    int count = 0;
    while (results.hasNext()) {
      count++;
      QuerySolution sln = results.next();
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    public void timeout_01()
    {
        String qs = prefix + "SELECT * { ?s ?p ?o }" ;
        QueryExecution qExec = QueryExecutionFactory.create(qs, ds) ;
        qExec.setTimeout(50, TimeUnit.MILLISECONDS) ;
        ResultSet rs = qExec.execSelect() ;
        sleep(100) ;
        exceptionExpected(rs) ;
    }

    @Test
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    public void timeout_02()
    {
        String qs = prefix + "SELECT * { ?s ?p ?o }" ;
        QueryExecution qExec = QueryExecutionFactory.create(qs, ds) ;
        qExec.setTimeout(50, TimeUnit.MILLISECONDS) ;
        ResultSet rs = qExec.execSelect() ;
        rs.next() ;
        sleep(75) ;
        exceptionExpected(rs) ;
    }

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    public void timeout_03()
    {
        String qs = prefix + "SELECT * { ?s ?p ?o }" ;
        QueryExecution qExec = QueryExecutionFactory.create(qs, ds) ;
        qExec.setTimeout(100, TimeUnit.MILLISECONDS) ;
        ResultSet rs = qExec.execSelect() ;
        ResultSetFormatter.consume(rs) ;
        qExec.close() ;
        qExec.abort() ;
    }

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    public void timeout_04()
    {
        String qs = prefix + "SELECT * { ?s ?p ?o }" ;
        QueryExecution qExec = QueryExecutionFactory.create(qs, ds) ;
        qExec.setTimeout(50, TimeUnit.MILLISECONDS) ;
        ResultSet rs = qExec.execSelect() ;
        ResultSetFormatter.consume(rs) ;
        sleep(100) ;
        rs.hasNext() ;         // Query ended - calling rs.hasNext() is safe.
        qExec.close() ;
    }
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    public void timeout_05()
    {
        String qs = prefix + "SELECT * { ?s ?p ?o FILTER f:wait(200) }" ;
        QueryExecution qExec = QueryExecutionFactory.create(qs, ds) ;
        qExec.setTimeout(50, TimeUnit.MILLISECONDS) ;
        ResultSet rs = qExec.execSelect() ;
        exceptionExpected(rs) ;
        qExec.close() ;
    }
   
    @Test
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