Package org.apache.cayenne.graph

Interface GraphChangeHandler

All Known Subinterfaces:
GraphManager
All Known Implementing Classes:
ChildDiffLoader, DataChannelSyncCallbackAction, GraphMap, NoSyncObjectStore, ObjectStore
public interface GraphChangeHandler
Defines callback API that can be used by object graph nodes to notify of their state changes. Graph nodes can be any objects as long as each node supports a notion of a unique id within the graph and each directional arc has a unique identifier within its source node.
Since:
1.2

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    arcCreated(Object nodeId, Object targetNodeId, ArcId arcId)
    Notifies implementing object that a new arc was created between two nodes.
    void
    arcDeleted(Object nodeId, Object targetNodeId, ArcId arcId)
    Notifies implementing object that an arc between two nodes was deleted.
    void
    nodeCreated(Object nodeId)
    Notifies implementing object that a new node was created in the graph.
    void
    nodeIdChanged(Object nodeId, Object newId)
    Notifies implementing object that a node was assigned a new id.
    void
    nodePropertyChanged(Object nodeId, String property, Object oldValue, Object newValue)
    Notifies implementing object that a node's property was modified.
    void
    nodeRemoved(Object nodeId)
    Notifies implementing object that a node was removed from the graph.

  • Method Details

    • nodeIdChanged

      void nodeIdChanged(Object nodeId, Object newId)
      Notifies implementing object that a node was assigned a new id.

    • nodeCreated

      void nodeCreated(Object nodeId)
      Notifies implementing object that a new node was created in the graph.

    • nodeRemoved

      void nodeRemoved(Object nodeId)
      Notifies implementing object that a node was removed from the graph.

    • nodePropertyChanged

      void nodePropertyChanged(Object nodeId, String property, Object oldValue, Object newValue)
      Notifies implementing object that a node's property was modified.

    • arcCreated

      void arcCreated(Object nodeId, Object targetNodeId, ArcId arcId)
      Notifies implementing object that a new arc was created between two nodes.

    • arcDeleted

      void arcDeleted(Object nodeId, Object targetNodeId, ArcId arcId)
      Notifies implementing object that an arc between two nodes was deleted.