@Test
public void shouldThrowExceptionOnvInDifferentPartition() {
final Vertex vA = g.addVertex("any", "a");
assertEquals(vA.id(), g.v(vA.id()).id());
final PartitionGraphStrategy strategy =
(PartitionGraphStrategy) ((StrategyWrappedGraph) g).strategy().getGraphStrategy().get();
strategy.clearReadPartitions();
try {
g.v(vA.id());
} catch (Exception ex) {
final Exception expected = Graph.Exceptions.elementNotFound(Vertex.class, vA.id());
assertEquals(expected.getClass(), ex.getClass());
assertEquals(expected.getMessage(), ex.getMessage());
}
}
@Test
public void shouldWriteToMultiplePartitions() {
final Vertex vA = g.addVertex("any", "a");
final Vertex vAA = g.addVertex("any", "aa");
final Edge eAtoAA = vA.addEdge("a->a", vAA);
final PartitionGraphStrategy strategy =
(PartitionGraphStrategy) ((StrategyWrappedGraph) g).strategy().getGraphStrategy().get();
strategy.setWritePartition("B");
final Vertex vB = g.addVertex("any", "b");
vA.addEdge("a->b", vB);
strategy.setWritePartition("C");
final Vertex vC = g.addVertex("any", "c");
final Edge eBtovC = vB.addEdge("b->c", vC);
final Edge eAtovC = vA.addEdge("a->c", vC);
/* not applicable to SubgraphStrategy
final GraphTraversal t = g.V();
assertTrue(t.strategies().get().stream().anyMatch(o -> o.getClass().equals(PartitionGraphStrategy.PartitionGraphTraversalStrategy.class)));
*/
strategy.clearReadPartitions();
assertEquals(new Long(0), g.V().count().next());
assertEquals(new Long(0), g.E().count().next());
strategy.addReadPartition("A");
assertEquals(new Long(2), g.V().count().next());
assertEquals(new Long(1), g.E().count().next());
assertEquals(new Long(1), g.v(vA.id()).outE().count().next());
assertEquals(eAtoAA.id(), g.v(vA.id()).outE().next().id());
assertEquals(new Long(1), g.v(vA.id()).out().count().next());
assertEquals(vAA.id(), g.v(vA.id()).out().next().id());
strategy.addReadPartition("B");
assertEquals(new Long(3), g.V().count().next());
assertEquals(new Long(2), g.E().count().next());
strategy.addReadPartition("C");
assertEquals(new Long(4), g.V().count().next());
assertEquals(new Long(4), g.E().count().next());
strategy.removeReadPartition("A");
strategy.removeReadPartition("B");
assertEquals(new Long(1), g.V().count().next());
// two edges are in the "C" partition, but one each of their incident vertices are not
assertEquals(new Long(0), g.E().count().next());
assertEquals(new Long(0), g.v(vC.id()).inE().count().next());
assertEquals(new Long(0), g.v(vC.id()).in().count().next());
strategy.addReadPartition("B");
// only one edge in, due to excluded vertices; vA is not in {B,C}
assertEquals(new Long(1), g.v(vC.id()).inE().count().next());
assertEquals(new Long(1), g.v(vC.id()).in().count().next());
assertEquals(vC.id(), g.e(eBtovC.id()).inV().id().next());
assertEquals(vB.id(), g.e(eBtovC.id()).outV().id().next());
assertEquals(vC.id(), g.e(eAtovC.id()).inV().id().next());
assertFalse(g.e(eAtovC.id()).outV().hasNext());
/* not applicable to SubgraphStrategy
strategy.addReadPartition("A");
g.v(vA.id()).out().out().forEach(v -> {
assertTrue(v instanceof StrategyWrapped);
assertFalse(((StrategyWrappedElement) v).getBaseElement() instanceof StrategyWrapped);
});
g.v(vA.id()).outE().inV().outE().forEach(e -> {
assertTrue(e instanceof StrategyWrapped);
assertFalse(((StrategyWrappedElement) e).getBaseElement() instanceof StrategyWrapped);
});
*/
}