org.simantics.interop.mapping/src/org/simantics/interop/mapping/data/DistanceComparator.java

   1 package org.simantics.interop.mapping.data;\r
   2 \r
   3 import java.util.Comparator;\r
   4 \r
   5 public class DistanceComparator<T> implements Comparator<GraphNode<T>> {\r
   6 \r
   7         private String rel;\r
   8         private String inv;\r
   9         \r
  10         public DistanceComparator(String rel, String inv) {\r
  11                 this.rel = rel;\r
  12                 this.inv = inv;\r
  13         }\r
  14         \r
  15         @Override\r
  16         public int compare(GraphNode<T> arg0, GraphNode<T> arg1) {\r
  17                 int dist = arg0.distanceTo(arg1, rel, inv);\r
  18                 if (dist < 0) {\r
  19                         dist = arg0.distanceTo(arg1, inv, rel);\r
  20                         if (dist < 0)\r
  21                                 return 0;\r
  22                         return -dist;\r
  23                 } else {\r
  24                         return dist;\r
  25                 }\r
  26                 \r
  27         }\r
  28 }\r