Examples with StatementMetadataNode org.apache.rya.indexing.statement.metadata.matching.StatementMetadataNode used on opensource projects

Example 1 with StatementMetadataNode

use of org.apache.rya.indexing.statement.metadata.matching.StatementMetadataNode in project incubator-rya by apache.

the class MongoStatementMetadataNodeIT method simpleQueryWithBindingSetJoinOnProperty.

/**
 * Tests if the StatementMetadataNode joins BindingSet correctly for
 * variables appearing in metadata statements. In this case, the metadata
 * statements are (_:blankNode <http://createdOn 2017-01-04 ) and
 * (_:blankNode <http://createdBy> ?y). The variable ?y appears as the
 * object in the above metadata statement and its values are joined to the
 * constraint BindingSets in the example below.
 */
@Test
public void simpleQueryWithBindingSetJoinOnProperty() throws Exception {
    MongoDBRyaDAO dao = new MongoDBRyaDAO();
    try {
        dao.setConf(conf);
        dao.init();
        StatementMetadata metadata = new StatementMetadata();
        metadata.addMetadata(new RyaURI("http://createdBy"), new RyaType("Joe"));
        metadata.addMetadata(new RyaURI("http://createdOn"), new RyaType(XMLSchema.DATE, "2017-01-04"));
        RyaStatement statement1 = new RyaStatement(new RyaURI("http://Joe"), new RyaURI("http://worksAt"), new RyaType("CoffeeShop"), new RyaURI("http://context"), "", metadata);
        dao.add(statement1);
        SPARQLParser parser = new SPARQLParser();
        ParsedQuery pq = parser.parseQuery(query, null);
        List<StatementPattern> spList = StatementPatternCollector.process(pq.getTupleExpr());
        StatementMetadataNode<MongoDBRdfConfiguration> node = new StatementMetadataNode<>(spList, conf);
        QueryBindingSet bsConstraint = new QueryBindingSet();
        bsConstraint.addBinding("x", new LiteralImpl("CoffeeShop"));
        bsConstraint.addBinding("y", new LiteralImpl("Doug"));
        CloseableIteration<BindingSet, QueryEvaluationException> iteration = node.evaluate(bsConstraint);
        List<BindingSet> bsList = new ArrayList<>();
        while (iteration.hasNext()) {
            bsList.add(iteration.next());
        }
        Assert.assertEquals(0, bsList.size());
        dao.delete(statement1, conf);
    } finally {
        dao.destroy();
    }
}

Example 2 with StatementMetadataNode

use of org.apache.rya.indexing.statement.metadata.matching.StatementMetadataNode in project incubator-rya by apache.

the class MongoStatementMetadataNodeIT method simpleQueryWithoutBindingSet.

@Test
public void simpleQueryWithoutBindingSet() throws Exception {
    MongoDBRyaDAO dao = new MongoDBRyaDAO();
    try {
        dao.setConf(conf);
        dao.init();
        StatementMetadata metadata = new StatementMetadata();
        metadata.addMetadata(new RyaURI("http://createdBy"), new RyaType("Joe"));
        metadata.addMetadata(new RyaURI("http://createdOn"), new RyaType(XMLSchema.DATE, "2017-01-04"));
        RyaStatement statement = new RyaStatement(new RyaURI("http://Joe"), new RyaURI("http://worksAt"), new RyaType("CoffeeShop"), new RyaURI("http://context"), "", metadata);
        dao.add(statement);
        SPARQLParser parser = new SPARQLParser();
        ParsedQuery pq = parser.parseQuery(query, null);
        List<StatementPattern> spList = StatementPatternCollector.process(pq.getTupleExpr());
        StatementMetadataNode<?> node = new StatementMetadataNode<>(spList, conf);
        CloseableIteration<BindingSet, QueryEvaluationException> iteration = node.evaluate(new QueryBindingSet());
        QueryBindingSet bs = new QueryBindingSet();
        bs.addBinding("x", new LiteralImpl("CoffeeShop"));
        bs.addBinding("y", new LiteralImpl("Joe"));
        List<BindingSet> bsList = new ArrayList<>();
        while (iteration.hasNext()) {
            bsList.add(iteration.next());
        }
        Assert.assertEquals(1, bsList.size());
        Assert.assertEquals(bs, bsList.get(0));
        dao.delete(statement, conf);
    } finally {
        dao.destroy();
    }
}

Example 3 with StatementMetadataNode

use of org.apache.rya.indexing.statement.metadata.matching.StatementMetadataNode in project incubator-rya by apache.

the class StatementMetadataOptimizerTest method getExpected.

private static Set<StatementMetadataNode<?>> getExpected(String query) throws MalformedQueryException {
    ParsedQuery pq = parser.parseQuery(query, null);
    StatementMetadataExternalSetProvider provider = new StatementMetadataExternalSetProvider(getConf(false));
    List<StatementPattern> patterns = StatementPatternCollector.process(pq.getTupleExpr());
    JoinSegment<StatementMetadataNode<?>> segment = new JoinSegment<>(new HashSet<QueryModelNode>(patterns), new ArrayList<QueryModelNode>(patterns), new HashMap<ValueExpr, Filter>());
    return new HashSet<>(provider.getExternalSets(segment));
}

Example 4 with StatementMetadataNode

use of org.apache.rya.indexing.statement.metadata.matching.StatementMetadataNode in project incubator-rya by apache.

the class AccumuloStatementMetadataNodeTest method simpleQueryWithBindingSetJoinOnProperty.

/**
 * Tests if the StatementMetadataNode joins BindingSet correctly for
 * variables appearing in metadata statements. In this case, the metadata
 * statements are (_:blankNode <http://createdOn 2017-01-04 ) and
 * (_:blankNode <http://createdBy> ?y). The variable ?y appears as the
 * object in the above metadata statement and its values are joined to the
 * constraint BindingSets in the example below.
 *
 * @throws MalformedQueryException
 * @throws QueryEvaluationException
 * @throws RyaDAOException
 */
@Test
public void simpleQueryWithBindingSetJoinOnProperty() throws MalformedQueryException, QueryEvaluationException, RyaDAOException {
    StatementMetadata metadata = new StatementMetadata();
    metadata.addMetadata(new RyaURI("http://createdBy"), new RyaType("Joe"));
    metadata.addMetadata(new RyaURI("http://createdOn"), new RyaType(XMLSchema.DATE, "2017-01-04"));
    RyaStatement statement1 = new RyaStatement(new RyaURI("http://Joe"), new RyaURI("http://worksAt"), new RyaType("CoffeeShop"), new RyaURI("http://context"), "", metadata);
    dao.add(statement1);
    SPARQLParser parser = new SPARQLParser();
    ParsedQuery pq = parser.parseQuery(query, null);
    List<StatementPattern> spList = StatementPatternCollector.process(pq.getTupleExpr());
    StatementMetadataNode<AccumuloRdfConfiguration> node = new StatementMetadataNode<>(spList, conf);
    QueryBindingSet bsConstraint = new QueryBindingSet();
    bsConstraint.addBinding("x", new LiteralImpl("CoffeeShop"));
    bsConstraint.addBinding("y", new LiteralImpl("Doug"));
    CloseableIteration<BindingSet, QueryEvaluationException> iteration = node.evaluate(bsConstraint);
    List<BindingSet> bsList = new ArrayList<>();
    while (iteration.hasNext()) {
        bsList.add(iteration.next());
    }
    Assert.assertEquals(0, bsList.size());
    dao.delete(statement1, conf);
}

Example 5 with StatementMetadataNode

use of org.apache.rya.indexing.statement.metadata.matching.StatementMetadataNode in project incubator-rya by apache.

the class AccumuloStatementMetadataNodeTest method simpleQueryWithBindingSet.

@Test
public void simpleQueryWithBindingSet() throws MalformedQueryException, QueryEvaluationException, RyaDAOException {
    StatementMetadata metadata = new StatementMetadata();
    metadata.addMetadata(new RyaURI("http://createdBy"), new RyaType("Joe"));
    metadata.addMetadata(new RyaURI("http://createdOn"), new RyaType(XMLSchema.DATE, "2017-01-04"));
    RyaStatement statement1 = new RyaStatement(new RyaURI("http://Joe"), new RyaURI("http://worksAt"), new RyaType("CoffeeShop"), new RyaURI("http://context"), "", metadata);
    RyaStatement statement2 = new RyaStatement(new RyaURI("http://Joe"), new RyaURI("http://worksAt"), new RyaType("HardwareStore"), new RyaURI("http://context"), "", metadata);
    dao.add(statement1);
    dao.add(statement2);
    SPARQLParser parser = new SPARQLParser();
    ParsedQuery pq = parser.parseQuery(query, null);
    List<StatementPattern> spList = StatementPatternCollector.process(pq.getTupleExpr());
    StatementMetadataNode<AccumuloRdfConfiguration> node = new StatementMetadataNode<>(spList, conf);
    QueryBindingSet bsConstraint = new QueryBindingSet();
    bsConstraint.addBinding("x", new LiteralImpl("CoffeeShop"));
    bsConstraint.addBinding("z", new LiteralImpl("Virginia"));
    CloseableIteration<BindingSet, QueryEvaluationException> iteration = node.evaluate(bsConstraint);
    QueryBindingSet expected = new QueryBindingSet();
    expected.addBinding("x", new LiteralImpl("CoffeeShop"));
    expected.addBinding("y", new LiteralImpl("Joe"));
    expected.addBinding("z", new LiteralImpl("Virginia"));
    List<BindingSet> bsList = new ArrayList<>();
    while (iteration.hasNext()) {
        bsList.add(iteration.next());
    }
    Assert.assertEquals(1, bsList.size());
    Assert.assertEquals(expected, bsList.get(0));
    dao.delete(statement1, conf);
    dao.delete(statement2, conf);
}