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

Class com.hp.hpl.jena.query.QueryExecution

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

com.hp.hpl.jena.query.QueryExecution.execSelect()
Execute a SELECT query
Important: The name of this method is somewhat of a misnomer in that depending on the underlying implementation this typically does not execute the SELECT query but rather answers a wrapper over an internal data structure that can be used to answer the query. In essence calling this method only returns a plan for executing this query which only gets evaluated when you actually start iterating over the results.


    Query query = QueryFactory
        .create("PREFIX : <src/test/resources/PLOSone-search-results.csv#> SELECT ?author {?x :author ?author ; :doi '10.1371/journal.pone.0095156' }");
    
    QueryExecution qexec = QueryExecutionFactory.create(query, csv);
    ResultSet results = qexec.execSelect();
    
    assertTrue(results.hasNext());
    QuerySolution soln = results.nextSolution();
    assertEquals( "Oshrat Raz,Dorit L Lev,Alexander Battler,Eli I Lev", soln.getLiteral("author").getString());

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    Query query = QueryFactory
        .create("PREFIX : <src/test/resources/Palo_Alto_Trees.csv#> SELECT ?longitude ?latitude {?x :Longitude ?longitude ; :Latitude ?latitude ; :Distance%20from%20Property ?distance . FILTER(?distance > 50 )}");
    
    QueryExecution qexec = QueryExecutionFactory.create(query, csv);
    ResultSet results = qexec.execSelect();
    
    assertTrue(results.hasNext());
    QuerySolution soln = results.nextSolution();
    assertEquals( -122.1566921, soln.getLiteral("longitude").getDouble(), 0);
    assertEquals( 37.4408948, soln.getLiteral("latitude").getDouble(), 0);

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            //String sparql = "select * where {?s a <http://www.mytravels.com/Itinerary/MovieCityItinerary> }";
            
            Query query = QueryFactory.create(sparql, Syntax.syntaxARQ);
            QueryExecution queryExecution = QueryExecutionFactory.create(query, infModel);
            
            com.hp.hpl.jena.query.ResultSet resultSet = queryExecution.execSelect();
            
            ResultSetFormatter.out(System.out, resultSet);
            
            
        } catch (FileNotFoundException e) {

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            }
            query = prefix+query;


            try{
                QueryExecution qexec = QueryExecutionFactory.create(query,jenamodel);
                ResultSet results = qexec.execSelect();


                return results;
            }catch (Exception e){
                e.printStackTrace();
                return null;

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        query.serialize(System.out) ;
        System.out.println();
                                          
        QueryExecution qExec = QueryExecutionFactory.create(query, model) ;
        //LARQ.setDefaultIndex(qExec.getContext(), index) ;
        ResultSetFormatter.out(System.out, qExec.execSelect(), query) ;
        qExec.close() ;
    }


}

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        QueryExecution qexec = QueryExecutionFactory.create(query, model) ;
        PipedInputStream inputStream = new PipedInputStream();


        try {
            // Assumption: it's a SELECT query.
            ResultSet rs = qexec.execSelect() ;
            if(format.compareTo("XML")==0){
              System.out.println("Processing XML");
//              ResultSetFormatter.outputAsXML(rs);
              ResultSetFormatter.outputAsXML(os, rs);
              os.close();

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        System.out.println("Processing XML");
        new Thread(
                  new Runnable(){
                    public void run(){
                      try {
                        ResultSet rs = qexec.execSelect() ;
                        ResultSetFormatter.outputAsXML(out, rs);
                  out.close();
                } catch (IOException e) {
                  // TODO Auto-generated catch block
                  e.printStackTrace();

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    QueryExecution qexec = QueryExecutionFactory.create(query, model);
    PipedInputStream inputStream = new PipedInputStream();


    try {
      // Assumption: it's a SELECT query.
      ResultSet rs = qexec.execSelect();
      if (format.compareTo("XML") == 0) {
        LOG.debug("Processing XML");
        // ResultSetFormatter.outputAsXML(rs);
        ResultSetFormatter.outputAsXML(os, rs);
        os.close();

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        // Create a single execution of this query, apply to a model
        // which is wrapped up as a Dataset
        final QueryExecution qexec = QueryExecutionFactory.sparqlService(
                repository, query);
        ResultSet rs = qexec.execSelect();
        try
        {
            createTupleList(rs, true, true);
        }
        catch (PipeClosedException e)

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    Query query = QueryFactory.create(queryString);
//    // Execute the query and obtain results
    QueryExecution qexec = QueryExecutionFactory.create(query, jenaModel);


    try {
      ResultSet results = qexec.execSelect() ;
      
      if (!results.hasNext()) {
        logger.info("query does not return any answer.");
        return null;
      }

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