# Package org.apache.cayenne.graph

package org.apache.cayenne.graph
Contains generic graph management tools used in Cayenne. Main focus of this API is not graph semantics, but rather working with a graph as a random access map of nodes and tracking graph changes.

- Related Packages
  Package
  Description
  org.apache.cayenne
  Contains persistence APIs directly accessible by users.
- Class
  Description
  ArcCreateOperation
  ArcDeleteOperation
  ArcId
  Object that represents Arc identifier.
  ChildDiffLoader
  A GraphChangeHandler that loads child ObjectContext diffs into a parent ObjectContext.
  CompoundDiff
  A GraphDiff that is a list of other GraphDiffs.
  GraphChangeHandler
  Defines callback API that can be used by object graph nodes to notify of their state changes.
  GraphDiff
  Represents a change in an object graph.
  GraphDiffCompressor
  A utility class that removes redundant and mutually exclusive graph changes from the graph diff.
  GraphEvent
  An event indicating a change in the object graph.
  GraphManager
  Represents a generic "managed" graph with nodes mapped by their ids.
  GraphMap
  A base implementation of GraphManager that stores graph nodes keyed by their ids.
  NodeCreateOperation
  NodeDeleteOperation
  NodeDiff
  An abstract superclass of operations on individual nodes and arcs in a digraph.
  NodeIdChangeOperation
  A GraphDiff representing a change in node ID.
  NodePropertyChangeOperation