Examples with HashJoin org.apache.rya.api.persist.query.join.HashJoin used on opensource projects

Example 6 with HashJoin

use of org.apache.rya.api.persist.query.join.HashJoin in project incubator-rya by apache.

the class HashJoinTest method testSimpleHashJoinPredicateOnly.

@Test
public void testSimpleHashJoinPredicateOnly() throws Exception {
    // add data
    RyaURI pred1 = new RyaURI(litdupsNS, "pred1");
    RyaURI pred2 = new RyaURI(litdupsNS, "pred2");
    RyaType one = new RyaType("1");
    RyaURI subj1 = new RyaURI(litdupsNS, "subj1");
    RyaURI subj2 = new RyaURI(litdupsNS, "subj2");
    RyaURI subj3 = new RyaURI(litdupsNS, "subj3");
    RyaURI subj4 = new RyaURI(litdupsNS, "subj4");
    dao.add(new RyaStatement(subj1, pred1, one));
    dao.add(new RyaStatement(subj1, pred2, one));
    dao.add(new RyaStatement(subj2, pred1, one));
    dao.add(new RyaStatement(subj2, pred2, one));
    dao.add(new RyaStatement(subj3, pred1, one));
    dao.add(new RyaStatement(subj3, pred2, one));
    dao.add(new RyaStatement(subj4, pred1, one));
    dao.add(new RyaStatement(subj4, pred2, one));
    // 1 join
    HashJoin ijoin = new HashJoin(dao.getQueryEngine());
    CloseableIteration<RyaStatement, RyaDAOException> join = ijoin.join(null, pred1, pred2);
    int count = 0;
    while (join.hasNext()) {
        RyaStatement next = join.next();
        count++;
    }
    assertEquals(4, count);
    join.close();
}

Example 7 with HashJoin

use of org.apache.rya.api.persist.query.join.HashJoin in project incubator-rya by apache.

the class HashJoinTest method testMergeJoinMultiWayNone.

@Test
public void testMergeJoinMultiWayNone() throws Exception {
    // add data
    RyaURI pred = new RyaURI(litdupsNS, "pred1");
    RyaType zero = new RyaType("0");
    RyaType one = new RyaType("1");
    RyaType two = new RyaType("2");
    RyaType three = new RyaType("3");
    RyaType four = new RyaType("4");
    RyaURI subj1 = new RyaURI(litdupsNS, "subj1");
    RyaURI subj2 = new RyaURI(litdupsNS, "subj2");
    RyaURI subj3 = new RyaURI(litdupsNS, "subj3");
    RyaURI subj4 = new RyaURI(litdupsNS, "subj4");
    dao.add(new RyaStatement(subj1, pred, one));
    dao.add(new RyaStatement(subj1, pred, three));
    dao.add(new RyaStatement(subj1, pred, four));
    dao.add(new RyaStatement(subj2, pred, zero));
    dao.add(new RyaStatement(subj2, pred, one));
    dao.add(new RyaStatement(subj2, pred, four));
    dao.add(new RyaStatement(subj3, pred, two));
    dao.add(new RyaStatement(subj3, pred, four));
    dao.add(new RyaStatement(subj4, pred, one));
    dao.add(new RyaStatement(subj4, pred, two));
    dao.add(new RyaStatement(subj4, pred, three));
    // 1 join
    HashJoin hjoin = new HashJoin(dao.getQueryEngine());
    CloseableIteration<RyaURI, RyaDAOException> join = hjoin.join(null, new RdfCloudTripleStoreUtils.CustomEntry<RyaURI, RyaType>(pred, one), new RdfCloudTripleStoreUtils.CustomEntry<RyaURI, RyaType>(pred, two), new RdfCloudTripleStoreUtils.CustomEntry<RyaURI, RyaType>(pred, three), new RdfCloudTripleStoreUtils.CustomEntry<RyaURI, RyaType>(pred, four));
    assertFalse(join.hasNext());
    join.close();
}