Examples with PathEvaluator org.neo4j.graphdb.traversal.PathEvaluator used on opensource projects

Example 1 with PathEvaluator

use of org.neo4j.graphdb.traversal.PathEvaluator in project neo4j by neo4j.

the class Dijkstra method traverser.

private Traverser traverser(Node start, final Node end, PathInterest<Double> interest) {
    PathExpander dijkstraExpander;
    PathEvaluator dijkstraEvaluator;
    if (stateInUse) {
        dijkstraExpander = expander;
        dijkstraEvaluator = Evaluators.includeWhereEndNodeIs(end);
    } else {
        MutableDouble shortestSoFar = new MutableDouble(Double.MAX_VALUE);
        dijkstraExpander = new DijkstraPathExpander(expander, shortestSoFar, epsilon, interest.stopAfterLowestCost());
        dijkstraEvaluator = new DijkstraEvaluator(shortestSoFar, end, costEvaluator);
    }
    lastTraverser = new MonoDirectionalTraversalDescription().uniqueness(Uniqueness.NODE_PATH).expand(dijkstraExpander, stateFactory).order(new DijkstraSelectorFactory(interest, costEvaluator)).evaluator(dijkstraEvaluator).traverse(start);
    return lastTraverser;
}