Ejemplo n.º 1
0
  /**
   * Tests whether an algebra expression gives the same results when run both with and without a
   * given optimizer
   *
   * @param algStr Algebra
   * @param ds Dataset
   * @param opt Optimizer
   * @param expected Expected number of results
   */
  public static void testAsAlgebra(String algStr, Dataset ds, Symbol opt, int expected) {
    Op op = SSE.parseOp(algStr);
    List<String> vars = new ArrayList<>();
    for (Var v : OpVars.visibleVars(op)) {
      vars.add(v.getName());
    }

    // Track current state
    boolean isEnabled = ARQ.isTrue(opt);
    boolean isDisabled = ARQ.isFalse(opt);

    try {
      // Run first without optimization
      ARQ.set(opt, false);
      QueryEngineMain engine =
          new QueryEngineMain(op, ds.asDatasetGraph(), BindingFactory.binding(), ARQ.getContext());
      QueryIterator iter =
          engine.eval(op, ds.asDatasetGraph(), BindingFactory.binding(), ARQ.getContext());
      ResultSetRewindable rs =
          ResultSetFactory.makeRewindable(
              new ResultSetStream(vars, ModelFactory.createDefaultModel(), iter));
      if (expected != rs.size()) {
        System.err.println("Non-optimized results not as expected");
        TextOutput output = new TextOutput((SerializationContext) null);
        output.format(System.out, rs);
        rs.reset();
      }
      Assert.assertEquals(expected, rs.size());
      iter.close();

      // Run with optimization
      ARQ.set(opt, true);
      engine =
          new QueryEngineMain(op, ds.asDatasetGraph(), BindingFactory.binding(), ARQ.getContext());
      QueryIterator iterOpt =
          engine.eval(op, ds.asDatasetGraph(), BindingFactory.binding(), ARQ.getContext());
      ResultSetRewindable rsOpt =
          ResultSetFactory.makeRewindable(
              new ResultSetStream(vars, ModelFactory.createDefaultModel(), iterOpt));
      if (expected != rsOpt.size()) {
        System.err.println("Optimized results not as expected");
        TextOutput output = new TextOutput((SerializationContext) null);
        output.format(System.out, rsOpt);
        rsOpt.reset();
      }
      Assert.assertEquals(expected, rsOpt.size());
      iterOpt.close();

      Assert.assertTrue(ResultSetCompare.isomorphic(rs, rsOpt));
    } finally {
      // Restore previous state
      if (isEnabled) {
        ARQ.set(opt, true);
      } else if (isDisabled) {
        ARQ.set(opt, false);
      } else {
        ARQ.unset(opt);
      }
    }
  }
  @Test
  public void directDataLinkToQuads() throws IOException {
    // first make a file of quads to load later
    final Model model = createDefaultModel();
    final Path quads = createTempFile("quadExample", ".nq");
    final Resource quadsURI = model.createResource(quads.toFile().toURI().toString());
    final Resource simpleExample = model.createResource("test:simpleExample");
    simpleExample.addProperty(type, DatasetAssemblerVocab.tDatasetTxnMem);
    simpleExample.addProperty(data, quadsURI);

    final DatasetGraph dsg = createTxnMem().asDatasetGraph();
    model
        .listStatements()
        .mapWith(Statement::asTriple)
        .mapWith(t -> new Quad(quadsURI.asNode(), t))
        .forEachRemaining(dsg::add);
    try (OutputStream out = new FileOutputStream(quads.toFile())) {
      write(out, dsg, NQUADS);
    }

    final Dataset dataset = assemble(simpleExample);
    final Model assembledDefaultModel = dataset.getDefaultModel();
    final Model assembledNamedModel = dataset.getNamedModel(quadsURI.getURI());
    assertTrue(assembledDefaultModel.isEmpty());
    assertTrue(
        assembledNamedModel.contains(
            assembledNamedModel.createStatement(simpleExample, data, quadsURI)));
  }
 @Test
 public void emptyDataset() {
   final Model model = createDefaultModel();
   final Resource empty = model.createResource("test:empty");
   empty.addProperty(type, DatasetAssemblerVocab.tDatasetTxnMem);
   Dataset dataset = assemble(empty);
   assertFalse(dataset.asDatasetGraph().find().hasNext());
 }
Ejemplo n.º 4
0
  public void setup() {

    DatasetGraph dsg = TDBFactory.createDatasetGraph();

    dsg.getContext().set(TDB.symUnionDefaultGraph, true);
    Dataset myDataset = DatasetFactory.create(dsg);

    baseModel = myDataset.getNamedModel("http://example.com/baseModel");
    baseModel = QueryEngineTest.populateModel(baseModel);

    dftModel = Factory.getInstance(eval, "http://example.com/securedModel", baseModel);

    dataset = DatasetFactory.createMem();
    dataset.setDefaultModel(dftModel);
  }
Ejemplo n.º 5
0
  @BeforeClass
  public static void setup() {
    // Dataset for implicit join tests
    implJoin = DatasetFactory.createTxnMem();

    Node a = NodeFactory.createURI("http://a");
    Node b = NodeFactory.createURI("http://b");
    Node c = NodeFactory.createURI("http://c");
    Node p1 = NodeFactory.createURI("http://p1");
    Node p2 = NodeFactory.createURI("http://p2");
    Node pSelf = NodeFactory.createURI("http://self");
    Node o = NodeFactory.createLiteral("object");

    DatasetGraph dsg = implJoin.asDatasetGraph();
    dsg.add(Quad.defaultGraphNodeGenerated, a, p1, o);
    dsg.add(Quad.defaultGraphNodeGenerated, a, p2, o);
    dsg.add(Quad.defaultGraphNodeGenerated, b, p1, o);
    dsg.add(Quad.defaultGraphNodeGenerated, b, p2, o);
    dsg.add(Quad.defaultGraphNodeGenerated, c, p1, o);
    // dsg.add(Quad.defaultGraphNodeGenerated, a, pSelf, a);

    // Currently these optimizations are off by default
    Assert.assertFalse(ARQ.isFalse(ARQ.optFilterImplicitJoin));
    Assert.assertFalse(ARQ.isFalse(ARQ.optImplicitLeftJoin));
  }
Ejemplo n.º 6
0
  @Test
  public void testOpenQueryType() {
    eval = new MockSecurityEvaluator(true, true, true, true, true, true);

    setup();

    try {
      final String query =
          "prefix fn: <http://www.w3.org/2005/xpath-functions#>  "
              + " SELECT ?foo ?bar WHERE "
              + " { ?foo a <http://example.com/class> ; "
              + "?bar [] ."
              + "  } ";
      final QueryExecution qexec = QueryExecutionFactory.create(query, dataset);
      try {
        final ResultSet results = qexec.execSelect();
        int count = 0;
        for (; results.hasNext(); ) {
          count++;
          results.nextSolution();
        }
        Assert.assertEquals(8, count);
      } finally {
        qexec.close();
      }
    } finally {
      dataset.close();
    }
  }
Ejemplo n.º 7
0
  @Test
  public void testSelectAllType() {
    eval =
        new MockSecurityEvaluator(true, true, true, true, true, true) {

          @Override
          public boolean evaluate(
              final Object principal,
              final Action action,
              final Node graphIRI,
              final Triple triple) {
            if (triple.getSubject().isURI()
                && triple.getSubject().getURI().equals("http://example.com/resource/1")) {
              return false;
            }
            return super.evaluate(principal, action, graphIRI, triple);
          }
        };

    setup();

    try {
      String query = "SELECT ?s ?p ?o WHERE " + " { ?s ?p ?o } ";
      QueryExecution qexec = QueryExecutionFactory.create(query, dataset);
      try {
        final ResultSet results = qexec.execSelect();
        int count = 0;
        for (; results.hasNext(); ) {
          count++;
          results.nextSolution();
        }
        // 2x 3 values + type triple
        Assert.assertEquals(8, count);
      } finally {
        qexec.close();
      }

      query = "SELECT ?g ?s ?p ?o WHERE " + " { GRAPH ?g {?s ?p ?o } }";
      qexec = QueryExecutionFactory.create(query, dataset);
      try {
        final ResultSet results = qexec.execSelect();
        int count = 0;
        for (; results.hasNext(); ) {
          count++;
          results.nextSolution();
        }
        // 2x 3 values + type triple
        // all are in the base graph so no named graphs
        Assert.assertEquals(0, count);
      } finally {
        qexec.close();
      }
    } finally {
      dataset.close();
    }
  }
Ejemplo n.º 8
0
  @Test
  public void testUnionWorks() {
    Dataset ds = (Dataset) AssemblerUtils.build("union.ttl", SDBConnect.TYPE);
    ReconnectingDatasetGraph toQuery = (ReconnectingDatasetGraph) ds.asDatasetGraph();
    toQuery.getDatasetGraph().getStore().getTableFormatter().format();
    UpdateRequest ur =
        UpdateFactory.create(
            "insert data {"
                + "graph <http://example.com/a> { <http://example.com/1> <http://example.com/prop> 1 }"
                + "graph <http://example.com/b> { <http://example.com/2> <http://example.com/prop> 2 }"
                + "}");
    UpdateProcessor u = UpdateExecutionFactory.create(ur, toQuery);
    u.execute();

    QueryExecution qe = QueryExecutionFactory.create("SELECT * { ?s ?p ?o }", ds);
    ResultSetRewindable r = ResultSetFactory.makeRewindable(qe.execSelect());

    assertEquals("We have a union!", 2, r.size());
  }
  public static List<String> listThingDescriptions(String query) {
    List<String> tds = new ArrayList<>();

    Dataset dataset = Repository.get().dataset;
    dataset.begin(ReadWrite.READ);

    try {
      String q = "SELECT DISTINCT ?g WHERE { GRAPH ?g { " + query + " }}";
      try (QueryExecution qexec = QueryExecutionFactory.create(q, dataset)) {
        ResultSet result = qexec.execSelect();
        while (result.hasNext()) {
          tds.add(result.next().get("g").asResource().getURI());
        }
      }
    } finally {
      dataset.end();
    }

    return tds;
  }
Ejemplo n.º 10
0
  @AfterClass
  public static void teardown() {
    if (implJoin != null) {
      implJoin.close();
      implJoin = null;
    }

    // Currently these optimizations are off by default
    Assert.assertFalse(ARQ.isFalse(ARQ.optFilterImplicitJoin));
    Assert.assertFalse(ARQ.isFalse(ARQ.optImplicitLeftJoin));
  }
  @Test
  public void directDataLinkForDefaultAndNamedGraphs() throws IOException {
    // first make a file of triples to load later
    final Model model = createDefaultModel();
    final Path triples = createTempFile("simpleExample", ".nt");
    final Resource triplesURI = model.createResource(triples.toFile().toURI().toString());
    final Resource simpleExample = model.createResource("test:simpleExample");
    simpleExample.addProperty(type, DatasetAssemblerVocab.tDatasetTxnMem);
    // add a default graph
    simpleExample.addProperty(data, triplesURI);
    // add a named graph
    final Resource namedGraphDef = model.createResource("test:namedGraphDef");
    simpleExample.addProperty(pNamedGraph, namedGraphDef);
    final Resource namedGraphName = model.createResource("test:namedGraphExample");
    namedGraphDef.addProperty(type, MemoryModel);
    namedGraphDef.addProperty(pGraphName, namedGraphName);
    namedGraphDef.addProperty(data, triplesURI);

    try (OutputStream out = new FileOutputStream(triples.toFile())) {
      write(out, model, NTRIPLES);
    }

    final Dataset dataset = assemble(simpleExample);
    final Model assembledDefaultModel = dataset.getDefaultModel();
    final Model assembledNamedModel = dataset.getNamedModel(namedGraphName.getURI());

    // we put the same triples in each model, so we check for the same triples in each model
    for (final Model m : new Model[] {assembledDefaultModel, assembledNamedModel}) {
      assertTrue(m.contains(simpleExample, pNamedGraph, namedGraphDef));
      assertTrue(m.contains(namedGraphDef, pGraphName, namedGraphName));
      assertTrue(m.contains(simpleExample, data, triplesURI));
    }
    final Iterator<Node> graphNodes = dataset.asDatasetGraph().listGraphNodes();
    assertTrue(graphNodes.hasNext());
    assertEquals(namedGraphName.asNode(), graphNodes.next());
    assertFalse(graphNodes.hasNext());
  }
Ejemplo n.º 12
0
  @Test
  public void dataset_05() {
    String graphName = "http://example/";
    Dataset ds = createFixed();
    ds.addNamedModel(graphName, model1);
    ds.replaceNamedModel(graphName, model2);
    assertTrue(ds.containsNamedModel(graphName));

    List<String> x = Iter.toList(ds.listNames());
    assertEquals(1, x.size());
    assertEquals(graphName, x.get(0));

    assertFalse(model1.isIsomorphicWith(ds.getNamedModel(graphName)));
    assertTrue(model2.isIsomorphicWith(ds.getNamedModel(graphName)));
  }
Ejemplo n.º 13
0
  @Test
  public void testRestrictedQueryType() {
    eval =
        new MockSecurityEvaluator(true, true, true, true, true, true) {

          @Override
          public boolean evaluate(
              final Object principal,
              final Action action,
              final Node graphIRI,
              final Triple triple) {
            if (triple.getSubject().isURI()
                && triple.getSubject().getURI().equals("http://example.com/resource/1")) {
              return false;
            }
            return super.evaluate(principal, action, graphIRI, triple);
          }
        };

    setup();

    try {
      final String query =
          "prefix fn: <http://www.w3.org/2005/xpath-functions#>  "
              + " SELECT ?foo ?bar WHERE "
              + " { ?foo a <http://example.com/class> ; "
              + "?bar [] ."
              + "  } ";
      final QueryExecution qexec = QueryExecutionFactory.create(query, dataset);
      try {
        final ResultSet results = qexec.execSelect();
        int count = 0;
        for (; results.hasNext(); ) {
          count++;
          results.nextSolution();
        }
        Assert.assertEquals(4, count);
      } finally {
        qexec.close();
      }
    } finally {
      dataset.close();
    }
  }
Ejemplo n.º 14
0
  @Test
  public void dataset_04() {
    String graphName = "http://example/";
    Dataset ds = createFixed();
    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));
  }
Ejemplo n.º 15
0
  public static void main(String[] args) throws IOException {
    if (args.length != 2) {
      err.println("usage: difference <db1> <db2>");
    }

    Dataset ds1 = dataset_(args[0]);
    Dataset ds2 = dataset_(args[1]);
    Model m1 = ds1.getDefaultModel();
    Model m2 = ds2.getDefaultModel();
    System.out.println(m1.size());
    System.out.println(m2.size());

    Model m1_minus_m2 = m1.difference(m2);
    RDFDataMgr.write(
        new FileOutputStream("missing-orthologousMatch-in-biological-concepts-db.ttl"),
        m1_minus_m2,
        Lang.TURTLE);

    ds1.close();
    ds2.close();
  }
Ejemplo n.º 16
0
 @Test
 public void dataset_03() {
   Dataset ds = createFixed();
   ds.setDefaultModel(model2);
   assertTrue(model2.isIsomorphicWith(ds.getDefaultModel()));
 }
Ejemplo n.º 17
0
 @Test
 public void dataset_02() {
   Dataset ds = createFixed();
   ds.getDefaultModel().add(s1, p1, o1);
   assertTrue(model1.isIsomorphicWith(ds.getDefaultModel()));
 }
Ejemplo n.º 18
0
 @Test
 public void dataset_01() {
   Dataset ds = createFixed();
   assertNotNull(ds.getDefaultModel());
   assertNotNull(ds.asDatasetGraph());
 }