Class IncidentEdgeIndexFunction<V,E>

java.lang.Object
edu.uci.ics.jung.graph.util.IncidentEdgeIndexFunction<V,E>
All Implemented Interfaces:
EdgeIndexFunction<V,E>

public class IncidentEdgeIndexFunction<V,E> extends Object implements EdgeIndexFunction<V,E>
A class which creates and maintains indices for incident edges.
  • Field Details

  • Constructor Details

    • IncidentEdgeIndexFunction

      private IncidentEdgeIndexFunction()
  • Method Details

    • getInstance

      public static <V, E> IncidentEdgeIndexFunction<V,E> getInstance()
      Type Parameters:
      V - the vertex type
      E - the edge type
      Returns:
      an instance of this type.
    • getIndex

      public int getIndex(Graph<V,E> graph, E e)
      Returns the index for the specified edge. Calculates the indices for e and for all edges parallel to e.
      Specified by:
      getIndex in interface EdgeIndexFunction<V,E>
      Parameters:
      graph - the graph with respect to which the index is calculated
      e - the edge whose index is to be queried
      Returns:
      e's index in graph
    • getIndex

      protected int getIndex(Graph<V,E> graph, E e, V u, V v)
    • getIndex

      protected int getIndex(Graph<V,E> graph, E e, V v)
    • reset

      public void reset(Graph<V,E> graph, E e)
      Resets the indices for this edge and its parallel edges. Should be invoked when an edge parallel to e has been added or removed.
      Specified by:
      reset in interface EdgeIndexFunction<V,E>
      Parameters:
      graph - the graph whose indices are to be reset
      e - the edge whose associated indices are to be reset
    • reset

      public void reset()
      Clears all edge indices for all edges in all graphs. Does not recalculate the indices.
      Specified by:
      reset in interface EdgeIndexFunction<V,E>