Package org.apache.cayenne.graph

## Interface GraphManager

- All Superinterfaces:
    `GraphChangeHandler`
  All Known Implementing Classes:
    `GraphMap`, `NoSyncObjectStore`, `ObjectStore`

      public interface GraphManager
      extends GraphChangeHandler

  Represents a generic "managed" graph with nodes mapped by their ids. Inherited GraphChangeHandler methods are intended as callbacks for graph node objects to notify graph of their changes.
  Since:
    1.2

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `Object` | `getNode​(Object nodeId)` | Returns a graph node given an id.
    `Collection<Object>` | `registeredNodes()` | Returns all graph nodes registered with GraphManager.
    `void` | `registerNode​(Object nodeId, Object nodeObject)` | "Registers" a graph node, usually storing the node in some internal map using its id as a key.
    `Object` | `unregisterNode​(Object nodeId)` | "Unregisters" a graph node, forgetting any information associated with nodeId.

    - ### Methods inherited from interface org.apache.cayenne.graph.GraphChangeHandler

      `arcCreated, arcDeleted, nodeCreated, nodeIdChanged, nodePropertyChanged, nodeRemoved`

- - ### Method Detail

    - #### getNode

          Object getNode​(Object nodeId)

      Returns a graph node given an id.

    - #### registerNode

          void registerNode​(Object nodeId,
                            Object nodeObject)

      "Registers" a graph node, usually storing the node in some internal map using its id as a key.

    - #### unregisterNode

          Object unregisterNode​(Object nodeId)

      "Unregisters" a graph node, forgetting any information associated with nodeId.

    - #### registeredNodes

          Collection<Object> registeredNodes()

      Returns all graph nodes registered with GraphManager.