// Copyright 2003, Trustees of Indiana University
// Please see the license in the file ../LICENSE

public class indirect_cmp<
  Vertex,
  Distance,
  DistanceMap extends ReadablePropertyMap<Vertex, Distance>,
  DistanceCompare extends StrictWeakOrdering<Distance>
> implements StrictWeakOrdering<Vertex> {
  private DistanceMap m_distance;
  private DistanceCompare m_compare;

  public indirect_cmp(DistanceMap distance, DistanceCompare compare) {
    m_distance = distance;
    m_compare = compare;
  }

  public boolean less(Vertex a, Vertex b) {
    return m_compare.less(m_distance.get(a), m_distance.get(b));
  }
}