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

   1 package org.simantics.interop.mapping.data;\r
   2 \r
   3 \r
   4 import org.simantics.utils.datastructures.hints.HintContext;\r
   5 \r
   6 public class Link <T> extends HintContext {\r
   7         private GraphNode<T> from;\r
   8         private GraphNode<T> to;\r
   9         private String name;\r
  10         \r
  11         private Link<T> inverseLink;\r
  12         private Link<T> mainLink;\r
  13 \r
  14         Link(GraphNode<T> from, String name, GraphNode<T> to) {\r
  15                 this.from = from;\r
  16                 this.to = to;\r
  17                 this.name = name;\r
  18         }\r
  19         \r
  20         public GraphNode<T> from() {\r
  21                 return from;\r
  22         }\r
  23         \r
  24         public GraphNode<T> to() {\r
  25                 return to;\r
  26         }\r
  27         \r
  28         public String getName() {\r
  29                 return name;\r
  30         }\r
  31         \r
  32         void setInverseLink(Link<T> inverseLink) {\r
  33                 this.inverseLink = inverseLink;\r
  34         }\r
  35         \r
  36         void setMainLink(Link<T> mainLink) {\r
  37                 this.mainLink = mainLink;\r
  38         }\r
  39         \r
  40         public String getInverseName() {\r
  41                 if (inverseLink != null)\r
  42                         return inverseLink.getName();\r
  43                 if (mainLink != null)\r
  44                         return mainLink.getName();\r
  45                 return null;\r
  46         }\r
  47         \r
  48         public boolean hasInverse() {\r
  49                 return inverseLink != null || mainLink != null;\r
  50         }\r
  51         \r
  52         public Link<T> getInverse() {\r
  53                 if (inverseLink != null)\r
  54                         return inverseLink;\r
  55                 if (mainLink != null)\r
  56                         return mainLink;\r
  57                 return null;\r
  58         }\r
  59         \r
  60         public boolean isInverse() {\r
  61                 return mainLink != null;\r
  62         }\r
  63         \r
  64         public boolean isMain() {\r
  65                 return inverseLink != null;\r
  66         }\r
  67         \r
  68         @Override\r
  69         public boolean equals(Object obj) {\r
  70                 if (!obj.getClass().equals(getClass()))\r
  71                         return false;\r
  72                 Link<?> other = (Link<?>)obj;\r
  73                 if (!from.equals(other.from))\r
  74                         return false;\r
  75                 if (!to.equals(other.to))\r
  76                         return false;\r
  77                 if (!GraphNode.equals(name,other.name))\r
  78                         return false;\r
  79                 return true;\r
  80                 \r
  81         }\r
  82         \r
  83         @Override\r
  84         public int hashCode() {\r
  85                 return from.hashCode() * to.hashCode() + name.hashCode();\r
  86         }\r
  87         \r
  88         @Override\r
  89     public void setHint(Key key, Object value) {\r
  90                 if (value == null)\r
  91                         return;\r
  92                 super.setHint(key, value);\r
  93         }\r
  94 \r
  95         \r
  96         public String toString() {\r
  97                 return name + "/" + getInverseName() + " -> " + to.toString();\r
  98         }\r
  99 }\r