Package org.apache.openjpa.lib.graph

Interface GraphVisitor

public interface GraphVisitor

A helper interface that allows third parties to be notified of graph events during graph traversals

Since:
1.0.0
Author:
Steve Kim

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    edgeVisited(Edge edge)
    may visit the node twice (both sides)
    void
    nodeSeen(Object node)
    May not be called.
    void
    nodeVisited(Object node)
    will only be called once per node

  • Method Details

    • nodeSeen

      void nodeSeen(Object node)
      May not be called. The meaning of this method is dependent on the traversal being used. See each appropriate graph walker for details.

    • nodeVisited

      void nodeVisited(Object node)
      will only be called once per node

    • edgeVisited

      void edgeVisited(Edge edge)
      may visit the node twice (both sides)