Question

Is there any difference between

Approach 1:

   TraversalDescription one = new TraversalDescriptionImpl();
        one = one.breadthFirst()
             .relationships(RelType.KNOWS, Direction.OUTGOING)
             .evaluator(Evaluators.excludeStartPosition());
    Traverser t1 = one.traverse(node);

Approach 2:

    TraversalDescription two = Traversal.description()
            .breadthFirst()
            .relationships(RelType.KNOWS, Direction.OUTGOING)
            .evaluator(Evaluators.excludeStartPosition());

    Traverser t2 = one.traverse(node);

Both Traversers seem to deliver the same results. Is there one approach preferred over another? When and why?

Answer 1

An object of the class TraversalDescriptionImpl is what the factory class Traversal will return when calling Traversal.description(). Snipped from the Traversal class source:

public static TraversalDescription description() {
    return new TraversalDescriptionImpl();
}

Hence,

TraversalDescription one = new TraversalDescriptionImpl();

is the same as

TraversalDescription two = Traversal.description()