Java Code Examples for com.thinkaurelius.titan.core.TitanGraph#newTransaction()

@Test
public void testLists() {

    int num = 13;

    TitanGraph g = TitanFactory.open("inmemory");
    StandardTitanTx tx = (StandardTitanTx) g.newTransaction();
    VertexLongList vll = new VertexLongList(tx);
    VertexArrayList val = new VertexArrayList(tx);
    for (int i=0; i<num; i++) {
        TitanVertex v = tx.addVertex();
        vll.add(v);
        val.add(v);
    }

    assertEquals(num, Iterables.size(vll));
    assertEquals(num, Iterables.size(val));

    vll.sort();
    val.sort();
    assertTrue(vll.isSorted());
    assertTrue(val.isSorted());

    for (Iterable<TitanVertex> iterable : new Iterable[]{val,vll}) {
        Iterator<TitanVertex> iter = iterable.iterator();
        TitanVertex previous = null;
        for (int i = 0; i < num; i++) {
            TitanVertex next = iter.next();
            if (previous!=null) assertTrue(previous.longId()<next.longId());
            previous = next;
        }
        try {
            iter.next();
            fail();
        } catch (NoSuchElementException ex) {

        }
    }


    tx.commit();
    g.close();

}
 

public static void load(final TitanGraph graph, String mixedIndexName, boolean uniqueNameCompositeIndex) {

        //Create Schema
        TitanManagement mgmt = graph.openManagement();
        final PropertyKey name = mgmt.makePropertyKey("name").dataType(String.class).make();
        TitanManagement.IndexBuilder nameIndexBuilder = mgmt.buildIndex("name", Vertex.class).addKey(name);
        if (uniqueNameCompositeIndex)
            nameIndexBuilder.unique();
        TitanGraphIndex namei = nameIndexBuilder.buildCompositeIndex();
        mgmt.setConsistency(namei, ConsistencyModifier.LOCK);
        final PropertyKey age = mgmt.makePropertyKey("age").dataType(Integer.class).make();
        if (null != mixedIndexName)
            mgmt.buildIndex("vertices", Vertex.class).addKey(age).buildMixedIndex(mixedIndexName);

        final PropertyKey time = mgmt.makePropertyKey("time").dataType(Integer.class).make();
        final PropertyKey reason = mgmt.makePropertyKey("reason").dataType(String.class).make();
        final PropertyKey place = mgmt.makePropertyKey("place").dataType(Geoshape.class).make();
        if (null != mixedIndexName)
            mgmt.buildIndex("edges", Edge.class).addKey(reason).addKey(place).buildMixedIndex(mixedIndexName);

        mgmt.makeEdgeLabel("father").multiplicity(Multiplicity.MANY2ONE).make();
        mgmt.makeEdgeLabel("mother").multiplicity(Multiplicity.MANY2ONE).make();
        EdgeLabel battled = mgmt.makeEdgeLabel("battled").signature(time).make();
        mgmt.buildEdgeIndex(battled, "battlesByTime", Direction.BOTH, Order.decr, time);
        mgmt.makeEdgeLabel("lives").signature(reason).make();
        mgmt.makeEdgeLabel("pet").make();
        mgmt.makeEdgeLabel("brother").make();

        mgmt.makeVertexLabel("titan").make();
        mgmt.makeVertexLabel("location").make();
        mgmt.makeVertexLabel("god").make();
        mgmt.makeVertexLabel("demigod").make();
        mgmt.makeVertexLabel("human").make();
        mgmt.makeVertexLabel("monster").make();

        mgmt.commit();

        TitanTransaction tx = graph.newTransaction();
        // vertices

        Vertex saturn = tx.addVertex(T.label, "titan", "name", "saturn", "age", 10000);

        Vertex sky = tx.addVertex(T.label, "location", "name", "sky");

        Vertex sea = tx.addVertex(T.label, "location", "name", "sea");

        Vertex jupiter = tx.addVertex(T.label, "god", "name", "jupiter", "age", 5000);

        Vertex neptune = tx.addVertex(T.label, "god", "name", "neptune", "age", 4500);

        Vertex hercules = tx.addVertex(T.label, "demigod", "name", "hercules", "age", 30);

        Vertex alcmene = tx.addVertex(T.label, "human", "name", "alcmene", "age", 45);

        Vertex pluto = tx.addVertex(T.label, "god", "name", "pluto", "age", 4000);

        Vertex nemean = tx.addVertex(T.label, "monster", "name", "nemean");

        Vertex hydra = tx.addVertex(T.label, "monster", "name", "hydra");

        Vertex cerberus = tx.addVertex(T.label, "monster", "name", "cerberus");

        Vertex tartarus = tx.addVertex(T.label, "location", "name", "tartarus");

        // edges

        jupiter.addEdge("father", saturn);
        jupiter.addEdge("lives", sky, "reason", "loves fresh breezes");
        jupiter.addEdge("brother", neptune);
        jupiter.addEdge("brother", pluto);

        neptune.addEdge("lives", sea).property("reason", "loves waves");
        neptune.addEdge("brother", jupiter);
        neptune.addEdge("brother", pluto);

        hercules.addEdge("father", jupiter);
        hercules.addEdge("mother", alcmene);
        hercules.addEdge("battled", nemean, "time", 1, "place", Geoshape.point(38.1f, 23.7f));
        hercules.addEdge("battled", hydra, "time", 2, "place", Geoshape.point(37.7f, 23.9f));
        hercules.addEdge("battled", cerberus, "time", 12, "place", Geoshape.point(39f, 22f));

        pluto.addEdge("brother", jupiter);
        pluto.addEdge("brother", neptune);
        pluto.addEdge("lives", tartarus, "reason", "no fear of death");
        pluto.addEdge("pet", cerberus);

        cerberus.addEdge("lives", tartarus);

        // commit the transaction to disk
        tx.commit();
    }