Module org.jgrapht.core
Package org.jgrapht.graph

Class DefaultGraphMapping<V,​E>

  • Type Parameters:
    V - the graph vertex type
    E - the graph edge type
    All Implemented Interfaces:
    GraphMapping<V,​E>
    public class DefaultGraphMapping<V,​E>
extends java.lang.Object
implements GraphMapping<V,​E>
    Implementation of the GraphMapping interface. The performance of getVertex/EdgeCorrespondence is based on the performance of the concrete Map class which is passed in the constructor. For example, using HashMap will provide expected $O(1)$ performance.
    Author:
    Assaf Lehr

    • Constructor Summary

      Constructors 
      Constructor Description
      DefaultGraphMapping​(java.util.Map<V,​V> g1ToG2, java.util.Map<V,​V> g2ToG1, Graph<V,​E> g1, Graph<V,​E> g2)
      The maps themselves are used.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      E getEdgeCorrespondence​(E currEdge, boolean forward)
      Gets the mapped value where the key is edge
      V getVertexCorrespondence​(V keyVertex, boolean forward)
      Gets the mapped value where the key is vertex

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • DefaultGraphMapping

        public DefaultGraphMapping​(java.util.Map<V,​V> g1ToG2,
                           java.util.Map<V,​V> g2ToG1,
                           Graph<V,​E> g1,
                           Graph<V,​E> g2)
        The maps themselves are used. There is no defensive-copy. Assumption: The key and value in the mappings are of valid graph objects. It is not checked.
        Parameters:
        g1ToG2 - vertex mapping from the first graph to the second
        g2ToG1 - vertex mapping from the second graph to the first
        g1 - the first graph
        g2 - the second graph

    • Method Detail

      • getEdgeCorrespondence

        public E getEdgeCorrespondence​(E currEdge,
                               boolean forward)
        Description copied from interface: GraphMapping
        Gets the mapped value where the key is edge
        Specified by:
        getEdgeCorrespondence in interface GraphMapping<V,​E>
        Parameters:
        currEdge - edge in one of the graphs
        forward - if true, uses mapping from graph1 to graph2; if false, use mapping from graph2 to graph1
        Returns:
        corresponding edge in other graph, or null if none

      • getVertexCorrespondence

        public V getVertexCorrespondence​(V keyVertex,
                                 boolean forward)
        Description copied from interface: GraphMapping
        Gets the mapped value where the key is vertex
        Specified by:
        getVertexCorrespondence in interface GraphMapping<V,​E>
        Parameters:
        keyVertex - vertex in one of the graphs
        forward - if true, uses mapping from graph1 to graph2; if false, use mapping from graph2 to graph1
        Returns:
        corresponding vertex in other graph, or null if none