Examples with SPARQLParser org.eclipse.rdf4j.query.parser.sparql.SPARQLParser used on opensource projects

Example 21 with SPARQLParser

use of org.eclipse.rdf4j.query.parser.sparql.SPARQLParser in project incubator-rya by apache.

the class SparqlToPigTransformVisitorTest method testHardQuery.

public void testHardQuery() throws Exception {
    String query = "PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>\n" + " PREFIX ub: <urn:lubm:rdfts#>\n" + " SELECT * WHERE\n" + " {\n" + "        ?y rdf:type ub:University .\n" + "        ?z ub:subOrganizationOf ?y .\n" + "        ?z rdf:type ub:Department .\n" + "        ?x ub:memberOf ?z .\n" + "        ?x ub:undergraduateDegreeFrom ?y .\n" + "       ?x rdf:type ub:GraduateStudent .\n" + " }\n" + "limit 100";
    // String query = "PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>\n" +
    // " PREFIX ub: <urn:lubm:rdfts#>\n" +
    // " SELECT * WHERE\n" +
    // " {\n" +
    // "\t?x ub:advisor ?y.\n" +
    // "\t?y ub:teacherOf ?z.\n" +
    // "\t?x ub:takesCourse ?z.\n" +
    // "\t?x rdf:type ub:Student.\n" +
    // "\t?y rdf:type ub:Faculty.\n" +
    // "\t?z rdf:type ub:Course.\n" +
    // " }\n" +
    // "limit 100";
    // System.out.println(query);
    QueryParser parser = new SPARQLParser();
    ParsedQuery parsedQuery = parser.parseQuery(query, null);
    TupleExpr tupleExpr = parsedQuery.getTupleExpr();
    // CloudbaseRdfEvalStatsDAO rdfEvalStatsDAO = new CloudbaseRdfEvalStatsDAO();
    // rdfEvalStatsDAO.setConnector(new ZooKeeperInstance("stratus", "stratus13:2181").getConnector("root", "password".getBytes()));
    // rdfEvalStatsDAO.setEvalTable("l_eval");
    // RdfCloudTripleStoreEvaluationStatistics stats = new RdfCloudTripleStoreEvaluationStatistics(new Configuration(), rdfEvalStatsDAO);
    // (new SimilarVarJoinOptimizer(stats)).optimize(tupleExpr, null, null);
    // System.out.println(tupleExpr);
    SparqlToPigTransformVisitor visitor = new SparqlToPigTransformVisitor();
    visitor.setTablePrefix(tablePrefix);
    visitor.setInstance(instance);
    visitor.setZk(zk);
    visitor.setUser(user);
    visitor.setPassword(password);
    visitor.meet(new QueryRoot(tupleExpr));
// System.out.println(visitor.getPigScript());
}

Example 22 with SPARQLParser

use of org.eclipse.rdf4j.query.parser.sparql.SPARQLParser in project incubator-rya by apache.

the class SparqlToPigTransformVisitorTest method testJoin.

public void testJoin() throws Exception {
    String query = "select * where {\n" + "?subj <urn:lubm:rdfts#name> 'Department0'.\n" + "?subj <urn:lubm:rdfts#subOrganizationOf> <http://www.University0.edu>.\n" + "}";
    // System.out.println(query);
    QueryParser parser = new SPARQLParser();
    ParsedQuery parsedQuery = parser.parseQuery(query, null);
    // System.out.println(parsedQuery);
    SparqlToPigTransformVisitor visitor = new SparqlToPigTransformVisitor();
    visitor.setTablePrefix(tablePrefix);
    visitor.setInstance(instance);
    visitor.setZk(zk);
    visitor.setUser(user);
    visitor.setPassword(password);
    visitor.meet(new QueryRoot(parsedQuery.getTupleExpr()));
// System.out.println(visitor.getPigScript());
}

Example 23 with SPARQLParser

use of org.eclipse.rdf4j.query.parser.sparql.SPARQLParser in project incubator-rya by apache.

the class RdfCloudTripleStoreSelectivityEvaluationStatisticsTest method getTupleExpr.

private TupleExpr getTupleExpr(String query) throws MalformedQueryException {
    SPARQLParser sp = new SPARQLParser();
    ParsedQuery pq = sp.parseQuery(query, null);
    return pq.getTupleExpr();
}

Example 24 with SPARQLParser

use of org.eclipse.rdf4j.query.parser.sparql.SPARQLParser in project incubator-rya by apache.

the class QueryJoinSelectOptimizerTest method getTupleExpr.

private TupleExpr getTupleExpr(String query) throws MalformedQueryException {
    SPARQLParser sp = new SPARQLParser();
    ParsedQuery pq = sp.parseQuery(query, null);
    return pq.getTupleExpr();
}

Example 25 with SPARQLParser

use of org.eclipse.rdf4j.query.parser.sparql.SPARQLParser in project incubator-rya by apache.

the class StatementPatternEvalTest method simpleQueryNoBindingSetConstantContext.

@Test
public void simpleQueryNoBindingSetConstantContext() throws MalformedQueryException, QueryEvaluationException, RyaDAOException {
    // query is used to build statement that will be evaluated
    String query = "select ?x ?c where{ graph <uri:context1>  {?x <uri:talksTo> <uri:Bob>. }}";
    SPARQLParser parser = new SPARQLParser();
    ParsedQuery pq = parser.parseQuery(query, null);
    List<StatementPattern> spList = StatementPatternCollector.process(pq.getTupleExpr());
    RyaStatement statement1 = new RyaStatement(new RyaIRI("uri:Joe"), new RyaIRI("uri:talksTo"), new RyaType("uri:Bob"), new RyaIRI("uri:context1"), "", new StatementMetadata());
    dao.add(statement1);
    RyaStatement statement2 = new RyaStatement(new RyaIRI("uri:Doug"), new RyaIRI("uri:talksTo"), new RyaType("uri:Bob"), new RyaIRI("uri:context2"), "", new StatementMetadata());
    dao.add(statement2);
    RyaStatement statement3 = new RyaStatement(new RyaIRI("uri:Eric"), new RyaIRI("uri:talksTo"), new RyaType("uri:Bob"), new RyaIRI("uri:context3"), "", new StatementMetadata());
    dao.add(statement3);
    QueryBindingSet bsConstraint1 = new QueryBindingSet();
    CloseableIteration<BindingSet, QueryEvaluationException> iteration = eval.evaluate(spList.get(0), Arrays.asList(bsConstraint1));
    List<BindingSet> bsList = new ArrayList<>();
    while (iteration.hasNext()) {
        bsList.add(iteration.next());
    }
    Assert.assertEquals(1, bsList.size());
    QueryBindingSet expected = new QueryBindingSet();
    expected.addBinding("x", VF.createIRI("uri:Joe"));
    Assert.assertEquals(expected, bsList.get(0));
    dao.delete(Arrays.asList(statement1, statement2, statement3).iterator(), conf);
}