private <N extends InternalTitanVertex> void persist(
ListMultimap<N, InternalRelation> mutatedEdges,
Map<TitanType, TypeSignature> signatures,
InternalTitanTransaction tx,
StoreMutator mutator)
throws StorageException {
assert mutatedEdges != null && !mutatedEdges.isEmpty();
Collection<N> vertices = mutatedEdges.keySet();
// if (sortNodes) {
// List<N> sortedvertices = new ArrayList<N>(vertices);
// Collections.sort(sortedvertices, new Comparator<N>(){
//
// @Override
// public int compare(N o1, N o2) {
// assert o1.getID()!=o2.getID();
// if (o1.getID()<o2.getID()) return -1;
// else return 1;
// }
//
// });
// vertices=sortedvertices;
// }
for (N node : vertices) {
List<InternalRelation> edges = mutatedEdges.get(node);
List<Entry> additions = new ArrayList<Entry>(edges.size());
List<ByteBuffer> deletions = new ArrayList<ByteBuffer>(Math.max(10, edges.size() / 10));
List<TitanProperty> properties = new ArrayList<TitanProperty>();
for (InternalRelation edge : edges) {
if (edge.isRemoved()) {
if (edge.isProperty()) {
deleteIndexEntry((TitanProperty) edge, mutator);
}
deletions.add(getEntry(tx, edge, node, signatures, true).getColumn());
} else {
assert edge.isNew();
if (edge.isProperty()) properties.add((TitanProperty) edge);
additions.add(getEntry(tx, edge, node, signatures));
}
}
mutator.mutateEdges(IDHandler.getKey(node.getID()), additions, deletions);
// Persist property index for retrieval
for (TitanProperty prop : properties) {
addIndexEntry(prop, mutator);
}
}
}
public static double round(double d) {
return Math.round(d * 1000.0) / 1000.0;
}