Examples of org.neo4j.graphdb.traversal.TraversalDescription.evaluator()

org.neo4j.graphdb.traversal.TraversalDescription.evaluator()

NOTE: Replaces {@link #filter(Predicate)} and{@link #prune(PruneEvaluator)}. Adds {@code evaluator} to the list of evaluators which will control thebehaviour of the traversal. Each {@link Evaluator} can decide whether ornot to include a position in the traverser result, i.e. return it from the {@link Traverser} iterator and also whether to continue down thatpath or to prune, so that the traverser won't continue further down that path. Multiple {@link Evaluator}s can be added. For a path to be included in the result, all evaluators must agree to include it, i.e. returning either {@link Evaluation#INCLUDE_AND_CONTINUE} or{@link Evaluation#INCLUDE_AND_PRUNE}. For making the traversal continue down that path all evaluators must agree to continue from that path, i.e. returning either {@link Evaluation#INCLUDE_AND_CONTINUE} or{@link Evaluation#EXCLUDE_AND_CONTINUE}. @param evaluator @return a new traversal description with the new modifications.

      .breadthFirst()
      .uniqueness(getUniqueness());


    // set evaluators
    for (Evaluator evaluator : getEvaluators()) {
      description = description.evaluator(evaluator);
    }
    
    // add predicates as evaluators
    for (final Predicate<Node> predicate : predicates) {
      description = description.evaluator(new Evaluator() {

      description = description.evaluator(evaluator);
    }
    
    // add predicates as evaluators
    for (final Predicate<Node> predicate : predicates) {
      description = description.evaluator(new Evaluator() {


        @Override
        public Evaluation evaluate(Path path) {
          Node endNode = path.endNode();
          if (predicate.evaluate(securityContext, endNode)) {

            }
        };
        
        TraversalDescription description = Traversal.description().evaluator( mustBeConnectedToK );
        expectNodes( description.traverse( referenceNode() ), "b", "c" );
        expectNodes( description.evaluator( mustNotHaveMoreThanTwoOutRels ).traverse( referenceNode() ), "c" );
    }
    
    @Test
    public void testBroadeningFilters()
    {

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