Package org.apache.cayenne.graph

Interface GraphDiff

All Superinterfaces:
Serializable
All Known Implementing Classes:
ArcCreateOperation, ArcDeleteOperation, CompoundDiff, NodeCreateOperation, NodeDeleteOperation, NodeDiff, NodeIdChangeOperation, NodePropertyChangeOperation, ObjectDiff, ObjectStoreGraphDiff
public interface GraphDiff extends Serializable
Represents a change in an object graph. This can be a simple change (like a node property update) or a composite change that consists of a number of smaller changes.
Since:
1.2

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    apply(GraphChangeHandler handler)
    Calls appropriate methods on the handler to "replay" this change.
    boolean
    isNoop()
    Returns true if this diff is simply a placeholder and does not perform any actual operation.
    void
    undo(GraphChangeHandler handler)
    Calls appropriate methods on the handler to revert this change.

  • Method Details

    • isNoop

      boolean isNoop()
      Returns true if this diff is simply a placeholder and does not perform any actual operation.

    • apply

      void apply(GraphChangeHandler handler)
      Calls appropriate methods on the handler to "replay" this change.

    • undo

      void undo(GraphChangeHandler handler)
      Calls appropriate methods on the handler to revert this change.