Examples with QueryBindingSet org.openrdf.query.algebra.evaluation.QueryBindingSet used on opensource projects

Example 46 with QueryBindingSet

use of org.openrdf.query.algebra.evaluation.QueryBindingSet in project incubator-rya by apache.

the class RdfCloudTripleStoreConnection method evaluateInternal.

@Override
protected CloseableIteration<? extends BindingSet, QueryEvaluationException> evaluateInternal(TupleExpr tupleExpr, final Dataset dataset, BindingSet bindings, final boolean flag) throws SailException {
    verifyIsOpen();
    logger.trace("Incoming query model:\n{}", tupleExpr.toString());
    if (provenanceCollector != null) {
        try {
            provenanceCollector.recordQuery(tupleExpr.toString());
        } catch (final ProvenanceCollectionException e) {
            logger.trace("Provenance failed to record query.", e);
        }
    }
    tupleExpr = tupleExpr.clone();
    final C queryConf = (C) store.getConf().clone();
    if (queryConf == null) {
        // Should not happen, but this is better than a null dereference error.
        throw new SailException("Cloning store.getConf() returned null, aborting.");
    }
    if (bindings != null) {
        final Binding dispPlan = bindings.getBinding(RdfCloudTripleStoreConfiguration.CONF_QUERYPLAN_FLAG);
        if (dispPlan != null) {
            queryConf.setDisplayQueryPlan(Boolean.parseBoolean(dispPlan.getValue().stringValue()));
        }
        final Binding authBinding = bindings.getBinding(RdfCloudTripleStoreConfiguration.CONF_QUERY_AUTH);
        if (authBinding != null) {
            queryConf.setAuths(authBinding.getValue().stringValue().split(","));
        }
        final Binding ttlBinding = bindings.getBinding(RdfCloudTripleStoreConfiguration.CONF_TTL);
        if (ttlBinding != null) {
            queryConf.setTtl(Long.valueOf(ttlBinding.getValue().stringValue()));
        }
        final Binding startTimeBinding = bindings.getBinding(RdfCloudTripleStoreConfiguration.CONF_STARTTIME);
        if (startTimeBinding != null) {
            queryConf.setStartTime(Long.valueOf(startTimeBinding.getValue().stringValue()));
        }
        final Binding performantBinding = bindings.getBinding(RdfCloudTripleStoreConfiguration.CONF_PERFORMANT);
        if (performantBinding != null) {
            queryConf.setBoolean(RdfCloudTripleStoreConfiguration.CONF_PERFORMANT, Boolean.parseBoolean(performantBinding.getValue().stringValue()));
        }
        final Binding inferBinding = bindings.getBinding(RdfCloudTripleStoreConfiguration.CONF_INFER);
        if (inferBinding != null) {
            queryConf.setInfer(Boolean.parseBoolean(inferBinding.getValue().stringValue()));
        }
        final Binding useStatsBinding = bindings.getBinding(RdfCloudTripleStoreConfiguration.CONF_USE_STATS);
        if (useStatsBinding != null) {
            queryConf.setUseStats(Boolean.parseBoolean(useStatsBinding.getValue().stringValue()));
        }
        final Binding offsetBinding = bindings.getBinding(RdfCloudTripleStoreConfiguration.CONF_OFFSET);
        if (offsetBinding != null) {
            queryConf.setOffset(Long.parseLong(offsetBinding.getValue().stringValue()));
        }
        final Binding limitBinding = bindings.getBinding(RdfCloudTripleStoreConfiguration.CONF_LIMIT);
        if (limitBinding != null) {
            queryConf.setLimit(Long.parseLong(limitBinding.getValue().stringValue()));
        }
    } else {
        bindings = new QueryBindingSet();
    }
    if (!(tupleExpr instanceof QueryRoot)) {
        tupleExpr = new QueryRoot(tupleExpr);
    }
    try {
        final List<Class<QueryOptimizer>> optimizers = queryConf.getOptimizers();
        final Class<QueryOptimizer> pcjOptimizer = queryConf.getPcjOptimizer();
        if (pcjOptimizer != null) {
            QueryOptimizer opt = null;
            try {
                final Constructor<QueryOptimizer> construct = pcjOptimizer.getDeclaredConstructor(new Class[] {});
                opt = construct.newInstance();
            } catch (final Exception e) {
            }
            if (opt == null) {
                throw new NoSuchMethodException("Could not find valid constructor for " + pcjOptimizer.getName());
            }
            if (opt instanceof Configurable) {
                ((Configurable) opt).setConf(conf);
            }
            opt.optimize(tupleExpr, dataset, bindings);
        }
        final ParallelEvaluationStrategyImpl strategy = new ParallelEvaluationStrategyImpl(new StoreTripleSource<C>(queryConf, ryaDAO), inferenceEngine, dataset, queryConf);
        (new BindingAssigner()).optimize(tupleExpr, dataset, bindings);
        (new ConstantOptimizer(strategy)).optimize(tupleExpr, dataset, bindings);
        (new CompareOptimizer()).optimize(tupleExpr, dataset, bindings);
        (new ConjunctiveConstraintSplitter()).optimize(tupleExpr, dataset, bindings);
        (new DisjunctiveConstraintOptimizer()).optimize(tupleExpr, dataset, bindings);
        (new SameTermFilterOptimizer()).optimize(tupleExpr, dataset, bindings);
        (new QueryModelNormalizer()).optimize(tupleExpr, dataset, bindings);
        (new IterativeEvaluationOptimizer()).optimize(tupleExpr, dataset, bindings);
        if (!optimizers.isEmpty()) {
            for (final Class<QueryOptimizer> optclz : optimizers) {
                QueryOptimizer result = null;
                try {
                    final Constructor<QueryOptimizer> meth = optclz.getDeclaredConstructor(new Class[] {});
                    result = meth.newInstance();
                } catch (final Exception e) {
                }
                try {
                    final Constructor<QueryOptimizer> meth = optclz.getDeclaredConstructor(EvaluationStrategy.class);
                    result = meth.newInstance(strategy);
                } catch (final Exception e) {
                }
                if (result == null) {
                    throw new NoSuchMethodException("Could not find valid constructor for " + optclz.getName());
                }
                if (result instanceof Configurable) {
                    ((Configurable) result).setConf(conf);
                }
                result.optimize(tupleExpr, dataset, bindings);
            }
        }
        (new FilterOptimizer()).optimize(tupleExpr, dataset, bindings);
        (new OrderLimitOptimizer()).optimize(tupleExpr, dataset, bindings);
        logger.trace("Optimized query model:\n{}", tupleExpr.toString());
        if (queryConf.isInfer() && this.inferenceEngine != null) {
            try {
                tupleExpr.visit(new DomainRangeVisitor(queryConf, inferenceEngine));
                tupleExpr.visit(new SomeValuesFromVisitor(queryConf, inferenceEngine));
                tupleExpr.visit(new AllValuesFromVisitor(queryConf, inferenceEngine));
                tupleExpr.visit(new HasValueVisitor(queryConf, inferenceEngine));
                tupleExpr.visit(new IntersectionOfVisitor(queryConf, inferenceEngine));
                tupleExpr.visit(new ReflexivePropertyVisitor(queryConf, inferenceEngine));
                tupleExpr.visit(new PropertyChainVisitor(queryConf, inferenceEngine));
                tupleExpr.visit(new TransitivePropertyVisitor(queryConf, inferenceEngine));
                tupleExpr.visit(new SymmetricPropertyVisitor(queryConf, inferenceEngine));
                tupleExpr.visit(new InverseOfVisitor(queryConf, inferenceEngine));
                tupleExpr.visit(new SubPropertyOfVisitor(queryConf, inferenceEngine));
                tupleExpr.visit(new SubClassOfVisitor(queryConf, inferenceEngine));
                tupleExpr.visit(new SameAsVisitor(queryConf, inferenceEngine));
                tupleExpr.visit(new OneOfVisitor(queryConf, inferenceEngine));
                tupleExpr.visit(new HasSelfVisitor(queryConf, inferenceEngine));
            } catch (final Exception e) {
                logger.error("Error encountered while visiting query node.", e);
            }
        }
        if (queryConf.isPerformant()) {
            tupleExpr.visit(new SeparateFilterJoinsVisitor());
        // tupleExpr.visit(new FilterTimeIndexVisitor(queryConf));
        // tupleExpr.visit(new PartitionFilterTimeIndexVisitor(queryConf));
        }
        final FilterRangeVisitor rangeVisitor = new FilterRangeVisitor(queryConf);
        tupleExpr.visit(rangeVisitor);
        // this has to be done twice to get replace the statementpatterns with the right ranges
        tupleExpr.visit(rangeVisitor);
        EvaluationStatistics stats = null;
        if (!queryConf.isUseStats() && queryConf.isPerformant() || rdfEvalStatsDAO == null) {
            stats = new DefaultStatistics();
        } else if (queryConf.isUseStats()) {
            if (queryConf.isUseSelectivity()) {
                stats = new RdfCloudTripleStoreSelectivityEvaluationStatistics<C>(queryConf, rdfEvalStatsDAO, selectEvalDAO);
            } else {
                stats = new RdfCloudTripleStoreEvaluationStatistics<C>(queryConf, rdfEvalStatsDAO);
            }
        }
        if (stats != null) {
            if (stats instanceof RdfCloudTripleStoreSelectivityEvaluationStatistics) {
                final QueryJoinSelectOptimizer qjso = new QueryJoinSelectOptimizer(stats, selectEvalDAO);
                qjso.optimize(tupleExpr, dataset, bindings);
            } else {
                final QueryJoinOptimizer qjo = new QueryJoinOptimizer(stats);
                // TODO: Make pluggable
                qjo.optimize(tupleExpr, dataset, bindings);
            }
        }
        final CloseableIteration<BindingSet, QueryEvaluationException> iter = strategy.evaluate(tupleExpr, EmptyBindingSet.getInstance());
        final CloseableIteration<BindingSet, QueryEvaluationException> iterWrap = new CloseableIteration<BindingSet, QueryEvaluationException>() {

            @Override
            public void remove() throws QueryEvaluationException {
                iter.remove();
            }

            @Override
            public BindingSet next() throws QueryEvaluationException {
                return iter.next();
            }

            @Override
            public boolean hasNext() throws QueryEvaluationException {
                return iter.hasNext();
            }

            @Override
            public void close() throws QueryEvaluationException {
                iter.close();
                strategy.shutdown();
            }
        };
        return iterWrap;
    } catch (final QueryEvaluationException e) {
        throw new SailException(e);
    } catch (final Exception e) {
        throw new SailException(e);
    }
}

Example 47 with QueryBindingSet

use of org.openrdf.query.algebra.evaluation.QueryBindingSet in project incubator-rya by apache.

the class StatementPatternEvalTest method simpleQueryWithBindingSetSameContext.

@Test
public void simpleQueryWithBindingSetSameContext() throws MalformedQueryException, QueryEvaluationException, RyaDAOException {
    // query is used to build statement that will be evaluated
    String query = "select ?x ?c where{ graph ?c  {?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 RyaURI("uri:Joe"), new RyaURI("uri:talksTo"), new RyaType("uri:Bob"), new RyaURI("uri:context1"), "", new StatementMetadata());
    dao.add(statement1);
    RyaStatement statement2 = new RyaStatement(new RyaURI("uri:Doug"), new RyaURI("uri:talksTo"), new RyaType("uri:Bob"), new RyaURI("uri:context2"), "", new StatementMetadata());
    dao.add(statement2);
    RyaStatement statement3 = new RyaStatement(new RyaURI("uri:Eric"), new RyaURI("uri:talksTo"), new RyaType("uri:Bob"), new RyaURI("uri:context3"), "", new StatementMetadata());
    dao.add(statement3);
    QueryBindingSet bsConstraint1 = new QueryBindingSet();
    bsConstraint1.addBinding("c", new URIImpl("uri:context1"));
    QueryBindingSet bsConstraint2 = new QueryBindingSet();
    bsConstraint2.addBinding("c", new URIImpl("uri:context1"));
    CloseableIteration<BindingSet, QueryEvaluationException> iteration = eval.evaluate(spList.get(0), Arrays.asList(bsConstraint1, bsConstraint2));
    List<BindingSet> bsList = new ArrayList<>();
    while (iteration.hasNext()) {
        bsList.add(iteration.next());
    }
    Assert.assertEquals(1, bsList.size());
    QueryBindingSet expected = new QueryBindingSet();
    expected.addBinding("x", new URIImpl("uri:Joe"));
    expected.addBinding("c", new URIImpl("uri:context1"));
    Assert.assertEquals(expected, bsList.get(0));
    dao.delete(Arrays.asList(statement1, statement2, statement3).iterator(), conf);
}

Example 48 with QueryBindingSet

use of org.openrdf.query.algebra.evaluation.QueryBindingSet 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 RyaURI("uri:Joe"), new RyaURI("uri:talksTo"), new RyaType("uri:Bob"), new RyaURI("uri:context1"), "", new StatementMetadata());
    dao.add(statement1);
    RyaStatement statement2 = new RyaStatement(new RyaURI("uri:Doug"), new RyaURI("uri:talksTo"), new RyaType("uri:Bob"), new RyaURI("uri:context2"), "", new StatementMetadata());
    dao.add(statement2);
    RyaStatement statement3 = new RyaStatement(new RyaURI("uri:Eric"), new RyaURI("uri:talksTo"), new RyaType("uri:Bob"), new RyaURI("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", new URIImpl("uri:Joe"));
    Assert.assertEquals(expected, bsList.get(0));
    dao.delete(Arrays.asList(statement1, statement2, statement3).iterator(), conf);
}

Example 49 with QueryBindingSet

use of org.openrdf.query.algebra.evaluation.QueryBindingSet in project incubator-rya by apache.

the class StatementPatternEvalTest method simpleQueryWithoutBindingSets.

@Test
public void simpleQueryWithoutBindingSets() throws MalformedQueryException, QueryEvaluationException, RyaDAOException {
    // query is used to build statement that will be evaluated
    String query = "select ?x ?c where{ graph ?c  {?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 RyaURI("uri:Joe"), new RyaURI("uri:talksTo"), new RyaType("uri:Bob"), new RyaURI("uri:context1"), "", new StatementMetadata());
    dao.add(statement1);
    RyaStatement statement2 = new RyaStatement(new RyaURI("uri:Doug"), new RyaURI("uri:talksTo"), new RyaType("uri:Bob"), new RyaURI("uri:context2"), "", new StatementMetadata());
    dao.add(statement2);
    RyaStatement statement3 = new RyaStatement(new RyaURI("uri:Eric"), new RyaURI("uri:talksTo"), new RyaType("uri:Bob"), new RyaURI("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(3, bsList.size());
    QueryBindingSet expected1 = new QueryBindingSet();
    expected1.addBinding("x", new URIImpl("uri:Joe"));
    expected1.addBinding("c", new URIImpl("uri:context1"));
    QueryBindingSet expected2 = new QueryBindingSet();
    expected2.addBinding("x", new URIImpl("uri:Doug"));
    expected2.addBinding("c", new URIImpl("uri:context2"));
    QueryBindingSet expected3 = new QueryBindingSet();
    expected3.addBinding("x", new URIImpl("uri:Eric"));
    expected3.addBinding("c", new URIImpl("uri:context3"));
    Set<BindingSet> expected = new HashSet<>(Arrays.asList(expected1, expected2, expected3));
    Set<BindingSet> actual = new HashSet<>(bsList);
    Assert.assertEquals(expected, actual);
    dao.delete(Arrays.asList(statement1, statement2, statement3).iterator(), conf);
}

Example 50 with QueryBindingSet

use of org.openrdf.query.algebra.evaluation.QueryBindingSet in project incubator-rya by apache.

the class EntityTupleSet method evaluate.

@Override
public CloseableIteration<BindingSet, QueryEvaluationException> evaluate(BindingSet bindings) throws QueryEvaluationException {
    // into the remainder of the star query to be evaluated
    if (minCard < 1000 && starQuery.size() > 2 && numberOfSpVars(minSp) == 1 && !starQuery.commonVarConstant()) {
        try {
            RdfCloudTripleStoreConnection conn = getRyaSailConnection();
            CloseableIteration<BindingSet, QueryEvaluationException> sol = (CloseableIteration<BindingSet, QueryEvaluationException>) conn.evaluate(minSp, null, bindings, false);
            Set<BindingSet> bSet = Sets.newHashSet();
            while (sol.hasNext()) {
                // TODO this is not optimal - should check if bindings variables intersect minSp variables
                // creating the following QueryBindingSet is only necessary if no intersection occurs
                QueryBindingSet bs = new QueryBindingSet();
                bs.addAll(sol.next());
                bs.addAll(bindings);
                bSet.add(bs);
            }
            List<StatementPattern> spList = starQuery.getNodes();
            spList.remove(minSp);
            StarQuery sq = new StarQuery(spList);
            conn.close();
            return new EntityTupleSet(sq, conf, true).evaluate(bSet);
        } catch (Exception e) {
            throw new QueryEvaluationException(e);
        }
    } else {
        this.evalOptUsed = true;
        return this.evaluate(Collections.singleton(bindings));
    }
}