Examples with TitanVertex com.thinkaurelius.titan.core.TitanVertex used on opensource projects

Example 56 with TitanVertex

use of com.thinkaurelius.titan.core.TitanVertex in project titan by thinkaurelius.

the class TitanIndexTest method testIndexReplay.

@Category({ BrittleTests.class })
@Test
public void testIndexReplay() throws Exception {
    final TimestampProvider times = graph.getConfiguration().getTimestampProvider();
    final Instant startTime = times.getTime();
    clopen(option(SYSTEM_LOG_TRANSACTIONS), true, option(KCVSLog.LOG_READ_LAG_TIME, TRANSACTION_LOG), Duration.ofMillis(50), option(LOG_READ_INTERVAL, TRANSACTION_LOG), Duration.ofMillis(250), option(MAX_COMMIT_TIME), Duration.ofSeconds(1), option(STORAGE_WRITE_WAITTIME), Duration.ofMillis(300), option(TestMockIndexProvider.INDEX_BACKEND_PROXY, INDEX), readConfig.get(INDEX_BACKEND, INDEX), option(INDEX_BACKEND, INDEX), TestMockIndexProvider.class.getName(), option(TestMockIndexProvider.INDEX_MOCK_FAILADD, INDEX), true);
    PropertyKey name = mgmt.makePropertyKey("name").dataType(String.class).make();
    PropertyKey age = mgmt.makePropertyKey("age").dataType(Integer.class).make();
    mgmt.buildIndex("mi", Vertex.class).addKey(name, getTextMapping()).addKey(age).buildMixedIndex(INDEX);
    finishSchema();
    Vertex[] vs = new TitanVertex[4];
    vs[0] = tx.addVertex("name", "Big Boy Bobson", "age", 55);
    newTx();
    vs[1] = tx.addVertex("name", "Long Little Lewis", "age", 35);
    vs[2] = tx.addVertex("name", "Tall Long Tiger", "age", 75);
    vs[3] = tx.addVertex("name", "Long John Don", "age", 15);
    newTx();
    vs[2] = getV(tx, vs[2]);
    vs[2].remove();
    vs[3] = getV(tx, vs[3]);
    vs[3].property(VertexProperty.Cardinality.single, "name", "Bad Boy Badsy");
    vs[3].property("age").remove();
    newTx();
    vs[0] = getV(tx, vs[0]);
    vs[0].property(VertexProperty.Cardinality.single, "age", 66);
    newTx();
    clopen();
    //Just to make sure nothing has been persisted to index
    evaluateQuery(tx.query().has("name", Text.CONTAINS, "boy"), ElementCategory.VERTEX, 0, new boolean[] { true, true }, "mi");
    /*
        Transaction Recovery
         */
    TransactionRecovery recovery = TitanFactory.startTransactionRecovery(graph, startTime);
    //wait
    Thread.sleep(12000L);
    recovery.shutdown();
    long[] recoveryStats = ((StandardTransactionLogProcessor) recovery).getStatistics();
    clopen();
    evaluateQuery(tx.query().has("name", Text.CONTAINS, "boy"), ElementCategory.VERTEX, 2, new boolean[] { true, true }, "mi");
    evaluateQuery(tx.query().has("name", Text.CONTAINS, "long"), ElementCategory.VERTEX, 1, new boolean[] { true, true }, "mi");
    //        TitanVertex v = Iterables.getOnlyElement(tx.query().has("name",Text.CONTAINS,"long").vertices());
    //        System.out.println(v.getProperty("age"));
    evaluateQuery(tx.query().has("name", Text.CONTAINS, "long").interval("age", 30, 40), ElementCategory.VERTEX, 1, new boolean[] { true, true }, "mi");
    evaluateQuery(tx.query().has("age", 75), ElementCategory.VERTEX, 0, new boolean[] { true, true }, "mi");
    evaluateQuery(tx.query().has("name", Text.CONTAINS, "boy").interval("age", 60, 70), ElementCategory.VERTEX, 1, new boolean[] { true, true }, "mi");
    evaluateQuery(tx.query().interval("age", 0, 100), ElementCategory.VERTEX, 2, new boolean[] { true, true }, "mi");
    //schema transaction was successful
    assertEquals(1, recoveryStats[0]);
    //all 4 index transaction had provoked errors in the indexing backend
    assertEquals(4, recoveryStats[1]);
}

Example 57 with TitanVertex

use of com.thinkaurelius.titan.core.TitanVertex in project titan by thinkaurelius.

the class TitanGraphTest method testIndexUpdatesWithReindexAndRemove.

@Test
public void testIndexUpdatesWithReindexAndRemove() throws InterruptedException, ExecutionException {
    clopen(option(LOG_SEND_DELAY, MANAGEMENT_LOG), Duration.ofMillis(0), option(KCVSLog.LOG_READ_LAG_TIME, MANAGEMENT_LOG), Duration.ofMillis(50), option(LOG_READ_INTERVAL, MANAGEMENT_LOG), Duration.ofMillis(250));
    //Types without index
    PropertyKey time = mgmt.makePropertyKey("time").dataType(Integer.class).make();
    PropertyKey name = mgmt.makePropertyKey("name").dataType(String.class).cardinality(Cardinality.SET).make();
    EdgeLabel friend = mgmt.makeEdgeLabel("friend").multiplicity(Multiplicity.MULTI).make();
    PropertyKey sensor = mgmt.makePropertyKey("sensor").dataType(Double.class).cardinality(Cardinality.LIST).make();
    finishSchema();
    RelationTypeIndex pindex, eindex;
    TitanGraphIndex gindex;
    //Add some sensor & friend data
    TitanVertex v = tx.addVertex();
    for (int i = 0; i < 10; i++) {
        v.property("sensor", i, "time", i);
        v.property("name", "v" + i);
        TitanVertex o = tx.addVertex();
        v.addEdge("friend", o, "time", i);
    }
    newTx();
    //Indexes should not yet be in use
    v = getV(tx, v);
    evaluateQuery(v.query().keys("sensor").interval("time", 1, 5).orderBy("time", decr), PROPERTY, 4, 1, new boolean[] { false, false }, tx.getPropertyKey("time"), Order.DESC);
    evaluateQuery(v.query().keys("sensor").interval("time", 101, 105).orderBy("time", decr), PROPERTY, 0, 1, new boolean[] { false, false }, tx.getPropertyKey("time"), Order.DESC);
    evaluateQuery(v.query().labels("friend").direction(OUT).interval("time", 1, 5).orderBy("time", decr), EDGE, 4, 1, new boolean[] { false, false }, tx.getPropertyKey("time"), Order.DESC);
    evaluateQuery(v.query().labels("friend").direction(OUT).interval("time", 101, 105).orderBy("time", decr), EDGE, 0, 1, new boolean[] { false, false }, tx.getPropertyKey("time"), Order.DESC);
    evaluateQuery(tx.query().has("name", "v5"), ElementCategory.VERTEX, 1, new boolean[] { false, true });
    evaluateQuery(tx.query().has("name", "v105"), ElementCategory.VERTEX, 0, new boolean[] { false, true });
    newTx();
    //Create indexes after the fact
    finishSchema();
    sensor = mgmt.getPropertyKey("sensor");
    time = mgmt.getPropertyKey("time");
    name = mgmt.getPropertyKey("name");
    friend = mgmt.getEdgeLabel("friend");
    mgmt.buildPropertyIndex(sensor, "byTime", decr, time);
    mgmt.buildEdgeIndex(friend, "byTime", Direction.OUT, decr, time);
    mgmt.buildIndex("bySensorReading", Vertex.class).addKey(name).buildCompositeIndex();
    finishSchema();
    newTx();
    //Add some sensor & friend data that should already be indexed even though index is not yet enabled
    v = getV(tx, v);
    for (int i = 100; i < 110; i++) {
        v.property("sensor", i, "time", i);
        v.property("name", "v" + i);
        TitanVertex o = tx.addVertex();
        v.addEdge("friend", o, "time", i);
    }
    tx.commit();
    //Should not yet be able to enable since not yet registered
    pindex = mgmt.getRelationIndex(mgmt.getRelationType("sensor"), "byTime");
    eindex = mgmt.getRelationIndex(mgmt.getRelationType("friend"), "byTime");
    gindex = mgmt.getGraphIndex("bySensorReading");
    try {
        mgmt.updateIndex(pindex, SchemaAction.ENABLE_INDEX);
        fail();
    } catch (IllegalArgumentException e) {
    }
    try {
        mgmt.updateIndex(eindex, SchemaAction.ENABLE_INDEX);
        fail();
    } catch (IllegalArgumentException e) {
    }
    try {
        mgmt.updateIndex(gindex, SchemaAction.ENABLE_INDEX);
        fail();
    } catch (IllegalArgumentException e) {
    }
    mgmt.commit();
    ManagementUtil.awaitVertexIndexUpdate(graph, "byTime", "sensor", 10, ChronoUnit.SECONDS);
    ManagementUtil.awaitGraphIndexUpdate(graph, "bySensorReading", 5, ChronoUnit.SECONDS);
    finishSchema();
    //Verify new status
    pindex = mgmt.getRelationIndex(mgmt.getRelationType("sensor"), "byTime");
    eindex = mgmt.getRelationIndex(mgmt.getRelationType("friend"), "byTime");
    gindex = mgmt.getGraphIndex("bySensorReading");
    assertEquals(SchemaStatus.REGISTERED, pindex.getIndexStatus());
    assertEquals(SchemaStatus.REGISTERED, eindex.getIndexStatus());
    assertEquals(SchemaStatus.REGISTERED, gindex.getIndexStatus(gindex.getFieldKeys()[0]));
    finishSchema();
    //Simply enable without reindex
    eindex = mgmt.getRelationIndex(mgmt.getRelationType("friend"), "byTime");
    mgmt.updateIndex(eindex, SchemaAction.ENABLE_INDEX);
    finishSchema();
    assertTrue(ManagementSystem.awaitRelationIndexStatus(graph, "byTime", "friend").status(SchemaStatus.ENABLED).timeout(10L, ChronoUnit.SECONDS).call().getSucceeded());
    //Reindex the other two
    pindex = mgmt.getRelationIndex(mgmt.getRelationType("sensor"), "byTime");
    ScanMetrics reindexSensorByTime = mgmt.updateIndex(pindex, SchemaAction.REINDEX).get();
    finishSchema();
    gindex = mgmt.getGraphIndex("bySensorReading");
    ScanMetrics reindexBySensorReading = mgmt.updateIndex(gindex, SchemaAction.REINDEX).get();
    finishSchema();
    assertNotEquals(0, reindexSensorByTime.getCustom(IndexRepairJob.ADDED_RECORDS_COUNT));
    assertNotEquals(0, reindexBySensorReading.getCustom(IndexRepairJob.ADDED_RECORDS_COUNT));
    //Every index should now be enabled
    pindex = mgmt.getRelationIndex(mgmt.getRelationType("sensor"), "byTime");
    eindex = mgmt.getRelationIndex(mgmt.getRelationType("friend"), "byTime");
    gindex = mgmt.getGraphIndex("bySensorReading");
    assertEquals(SchemaStatus.ENABLED, eindex.getIndexStatus());
    assertEquals(SchemaStatus.ENABLED, pindex.getIndexStatus());
    assertEquals(SchemaStatus.ENABLED, gindex.getIndexStatus(gindex.getFieldKeys()[0]));
    //Add some more sensor & friend data
    newTx();
    v = getV(tx, v);
    for (int i = 200; i < 210; i++) {
        v.property("sensor", i, "time", i);
        v.property("name", "v" + i);
        TitanVertex o = tx.addVertex();
        v.addEdge("friend", o, "time", i);
    }
    newTx();
    //Use indexes now but only see new data for property and graph index
    v = getV(tx, v);
    evaluateQuery(v.query().keys("sensor").interval("time", 1, 5).orderBy("time", decr), PROPERTY, 4, 1, new boolean[] { true, true }, tx.getPropertyKey("time"), Order.DESC);
    evaluateQuery(v.query().keys("sensor").interval("time", 101, 105).orderBy("time", decr), PROPERTY, 4, 1, new boolean[] { true, true }, tx.getPropertyKey("time"), Order.DESC);
    evaluateQuery(v.query().keys("sensor").interval("time", 201, 205).orderBy("time", decr), PROPERTY, 4, 1, new boolean[] { true, true }, tx.getPropertyKey("time"), Order.DESC);
    evaluateQuery(v.query().labels("friend").direction(OUT).interval("time", 1, 5).orderBy("time", decr), EDGE, 0, 1, new boolean[] { true, true }, tx.getPropertyKey("time"), Order.DESC);
    evaluateQuery(v.query().labels("friend").direction(OUT).interval("time", 101, 105).orderBy("time", decr), EDGE, 4, 1, new boolean[] { true, true }, tx.getPropertyKey("time"), Order.DESC);
    evaluateQuery(v.query().labels("friend").direction(OUT).interval("time", 201, 205).orderBy("time", decr), EDGE, 4, 1, new boolean[] { true, true }, tx.getPropertyKey("time"), Order.DESC);
    evaluateQuery(tx.query().has("name", "v5"), ElementCategory.VERTEX, 1, new boolean[] { true, true }, "bySensorReading");
    evaluateQuery(tx.query().has("name", "v105"), ElementCategory.VERTEX, 1, new boolean[] { true, true }, "bySensorReading");
    evaluateQuery(tx.query().has("name", "v205"), ElementCategory.VERTEX, 1, new boolean[] { true, true }, "bySensorReading");
    finishSchema();
    eindex = mgmt.getRelationIndex(mgmt.getRelationType("friend"), "byTime");
    ScanMetrics reindexFriendByTime = mgmt.updateIndex(eindex, SchemaAction.REINDEX).get();
    finishSchema();
    assertNotEquals(0, reindexFriendByTime.getCustom(IndexRepairJob.ADDED_RECORDS_COUNT));
    finishSchema();
    newTx();
    //It should now have all the answers
    v = getV(tx, v);
    evaluateQuery(v.query().labels("friend").direction(OUT).interval("time", 1, 5).orderBy("time", decr), EDGE, 4, 1, new boolean[] { true, true }, tx.getPropertyKey("time"), Order.DESC);
    evaluateQuery(v.query().labels("friend").direction(OUT).interval("time", 101, 105).orderBy("time", decr), EDGE, 4, 1, new boolean[] { true, true }, tx.getPropertyKey("time"), Order.DESC);
    evaluateQuery(v.query().labels("friend").direction(OUT).interval("time", 201, 205).orderBy("time", decr), EDGE, 4, 1, new boolean[] { true, true }, tx.getPropertyKey("time"), Order.DESC);
    pindex = mgmt.getRelationIndex(mgmt.getRelationType("sensor"), "byTime");
    gindex = mgmt.getGraphIndex("bySensorReading");
    mgmt.updateIndex(pindex, SchemaAction.DISABLE_INDEX);
    mgmt.updateIndex(gindex, SchemaAction.DISABLE_INDEX);
    mgmt.commit();
    tx.commit();
    ManagementUtil.awaitVertexIndexUpdate(graph, "byTime", "sensor", 10, ChronoUnit.SECONDS);
    ManagementUtil.awaitGraphIndexUpdate(graph, "bySensorReading", 5, ChronoUnit.SECONDS);
    finishSchema();
    pindex = mgmt.getRelationIndex(mgmt.getRelationType("sensor"), "byTime");
    gindex = mgmt.getGraphIndex("bySensorReading");
    assertEquals(SchemaStatus.DISABLED, pindex.getIndexStatus());
    assertEquals(SchemaStatus.DISABLED, gindex.getIndexStatus(gindex.getFieldKeys()[0]));
    finishSchema();
    newTx();
    //The two disabled indexes should force full scans
    v = getV(tx, v);
    evaluateQuery(v.query().keys("sensor").interval("time", 1, 5).orderBy("time", decr), PROPERTY, 4, 1, new boolean[] { false, false }, tx.getPropertyKey("time"), Order.DESC);
    evaluateQuery(v.query().keys("sensor").interval("time", 101, 105).orderBy("time", decr), PROPERTY, 4, 1, new boolean[] { false, false }, tx.getPropertyKey("time"), Order.DESC);
    evaluateQuery(v.query().keys("sensor").interval("time", 201, 205).orderBy("time", decr), PROPERTY, 4, 1, new boolean[] { false, false }, tx.getPropertyKey("time"), Order.DESC);
    evaluateQuery(v.query().labels("friend").direction(OUT).interval("time", 1, 5).orderBy("time", decr), EDGE, 4, 1, new boolean[] { true, true }, tx.getPropertyKey("time"), Order.DESC);
    evaluateQuery(v.query().labels("friend").direction(OUT).interval("time", 101, 105).orderBy("time", decr), EDGE, 4, 1, new boolean[] { true, true }, tx.getPropertyKey("time"), Order.DESC);
    evaluateQuery(v.query().labels("friend").direction(OUT).interval("time", 201, 205).orderBy("time", decr), EDGE, 4, 1, new boolean[] { true, true }, tx.getPropertyKey("time"), Order.DESC);
    evaluateQuery(tx.query().has("name", "v5"), ElementCategory.VERTEX, 1, new boolean[] { false, true });
    evaluateQuery(tx.query().has("name", "v105"), ElementCategory.VERTEX, 1, new boolean[] { false, true });
    evaluateQuery(tx.query().has("name", "v205"), ElementCategory.VERTEX, 1, new boolean[] { false, true });
    tx.commit();
    finishSchema();
    pindex = mgmt.getRelationIndex(mgmt.getRelationType("sensor"), "byTime");
    gindex = mgmt.getGraphIndex("bySensorReading");
    ScanMetrics pmetrics = mgmt.updateIndex(pindex, SchemaAction.REMOVE_INDEX).get();
    ScanMetrics gmetrics = mgmt.updateIndex(gindex, SchemaAction.REMOVE_INDEX).get();
    finishSchema();
    assertEquals(30, pmetrics.getCustom(IndexRemoveJob.DELETED_RECORDS_COUNT));
    assertEquals(30, gmetrics.getCustom(IndexRemoveJob.DELETED_RECORDS_COUNT));
}

Example 58 with TitanVertex

use of com.thinkaurelius.titan.core.TitanVertex in project titan by thinkaurelius.

the class TitanGraphTest method testEdgeTTLTiming.

/* ==================================================================================
                            TIME TO LIVE
     ==================================================================================*/
@Test
public void testEdgeTTLTiming() throws Exception {
    if (!features.hasCellTTL()) {
        return;
    }
    EdgeLabel label1 = mgmt.makeEdgeLabel("likes").make();
    int ttl1 = 1;
    int ttl2 = 4;
    mgmt.setTTL(label1, Duration.ofSeconds(ttl1));
    EdgeLabel label2 = mgmt.makeEdgeLabel("dislikes").make();
    mgmt.setTTL(label2, Duration.ofSeconds(ttl2));
    EdgeLabel label3 = mgmt.makeEdgeLabel("indifferentTo").make();
    assertEquals(Duration.ofSeconds(ttl1), mgmt.getTTL(label1));
    assertEquals(Duration.ofSeconds(ttl2), mgmt.getTTL(label2));
    assertEquals(Duration.ZERO, mgmt.getTTL(label3));
    mgmt.commit();
    TitanVertex v1 = graph.addVertex(), v2 = graph.addVertex(), v3 = graph.addVertex();
    v1.addEdge("likes", v2);
    v2.addEdge("dislikes", v1);
    v3.addEdge("indifferentTo", v1);
    // initial, pre-commit state of the edges.  They are not yet subject to TTL
    assertNotEmpty(v1.query().direction(Direction.OUT).vertices());
    assertNotEmpty(v2.query().direction(Direction.OUT).vertices());
    assertNotEmpty(v3.query().direction(Direction.OUT).vertices());
    long commitTime = System.currentTimeMillis();
    graph.tx().commit();
    // edges are now subject to TTL, although we must commit() or rollback() to see it
    assertNotEmpty(v1.query().direction(Direction.OUT).vertices());
    assertNotEmpty(v2.query().direction(Direction.OUT).vertices());
    assertNotEmpty(v3.query().direction(Direction.OUT).vertices());
    Thread.sleep(commitTime + (ttl1 * 1000L + 200) - System.currentTimeMillis());
    graph.tx().rollback();
    // e1 has dropped out
    assertEmpty(v1.query().direction(Direction.OUT).vertices());
    assertNotEmpty(v2.query().direction(Direction.OUT).vertices());
    assertNotEmpty(v3.query().direction(Direction.OUT).vertices());
    Thread.sleep(commitTime + (ttl2 * 1000L + 500) - System.currentTimeMillis());
    graph.tx().rollback();
    // both e1 and e2 have dropped out.  e3 has no TTL, and so remains
    assertEmpty(v1.query().direction(Direction.OUT).vertices());
    assertEmpty(v2.query().direction(Direction.OUT).vertices());
    assertNotEmpty(v3.query().direction(Direction.OUT).vertices());
}

Example 59 with TitanVertex

use of com.thinkaurelius.titan.core.TitanVertex in project titan by thinkaurelius.

the class TitanGraphTest method testVertexCentricIndexWithNull.

@Test
public void testVertexCentricIndexWithNull() {
    EdgeLabel bought = makeLabel("bought");
    PropertyKey time = makeKey("time", Long.class);
    mgmt.buildEdgeIndex(bought, "byTimeDesc", BOTH, decr, time);
    mgmt.buildEdgeIndex(bought, "byTimeIncr", BOTH, incr, time);
    finishSchema();
    TitanVertex v1 = tx.addVertex(), v2 = tx.addVertex();
    v1.addEdge("bought", v2).property("time", 1);
    v1.addEdge("bought", v2).property("time", 2);
    v1.addEdge("bought", v2).property("time", 3);
    v1.addEdge("bought", v2);
    v1.addEdge("bought", v2);
    assertEquals(5, v1.query().direction(OUT).labels("bought").edgeCount());
    assertEquals(1, v1.query().direction(OUT).labels("bought").has("time", 1).edgeCount());
    assertEquals(1, v1.query().direction(OUT).labels("bought").has("time", Cmp.LESS_THAN, 3).has("time", Cmp.GREATER_THAN, 1).edgeCount());
    assertEquals(3, v1.query().direction(OUT).labels("bought").has("time", Cmp.LESS_THAN, 5).edgeCount());
    assertEquals(3, v1.query().direction(OUT).labels("bought").has("time", Cmp.GREATER_THAN, 0).edgeCount());
    assertEquals(2, v1.query().direction(OUT).labels("bought").has("time", Cmp.LESS_THAN, 3).edgeCount());
    assertEquals(1, v1.query().direction(OUT).labels("bought").has("time", Cmp.GREATER_THAN, 2).edgeCount());
    assertEquals(2, v1.query().direction(OUT).labels("bought").hasNot("time").edgeCount());
    assertEquals(5, v1.query().direction(OUT).labels("bought").edgeCount());
    newTx();
    v1 = tx.getVertex(v1.longId());
    //Queries copied from above
    assertEquals(5, v1.query().direction(OUT).labels("bought").edgeCount());
    assertEquals(1, v1.query().direction(OUT).labels("bought").has("time", 1).edgeCount());
    assertEquals(1, v1.query().direction(OUT).labels("bought").has("time", Cmp.LESS_THAN, 3).has("time", Cmp.GREATER_THAN, 1).edgeCount());
    assertEquals(3, v1.query().direction(OUT).labels("bought").has("time", Cmp.LESS_THAN, 5).edgeCount());
    assertEquals(3, v1.query().direction(OUT).labels("bought").has("time", Cmp.GREATER_THAN, 0).edgeCount());
    assertEquals(2, v1.query().direction(OUT).labels("bought").has("time", Cmp.LESS_THAN, 3).edgeCount());
    assertEquals(1, v1.query().direction(OUT).labels("bought").has("time", Cmp.GREATER_THAN, 2).edgeCount());
    assertEquals(2, v1.query().direction(OUT).labels("bought").hasNot("time").edgeCount());
    assertEquals(5, v1.query().direction(OUT).labels("bought").edgeCount());
}

Example 60 with TitanVertex

use of com.thinkaurelius.titan.core.TitanVertex in project titan by thinkaurelius.

the class TitanGraphTest method testLargeJointIndexRetrieval.

@Test
public void testLargeJointIndexRetrieval() {
    makeVertexIndexedKey("sid", Integer.class);
    makeVertexIndexedKey("color", String.class);
    finishSchema();
    int sids = 17;
    String[] colors = { "blue", "red", "yellow", "brown", "green", "orange", "purple" };
    int multiplier = 200;
    int numV = sids * colors.length * multiplier;
    for (int i = 0; i < numV; i++) {
        TitanVertex v = graph.addVertex("color", colors[i % colors.length], "sid", i % sids);
    }
    clopen();
    assertCount(numV / sids, graph.query().has("sid", 8).vertices());
    assertCount(numV / colors.length, graph.query().has("color", colors[2]).vertices());
    assertCount(multiplier, graph.query().has("sid", 11).has("color", colors[3]).vertices());
}