Module org.datanucleus
Package org.datanucleus.state

Interface CallbackHandler

  • All Known Implementing Classes:
    ExecutionContextImpl.NullCallbackHandler
    public interface CallbackHandler
    CallBack handlers receive notification of events on persistent objects. Handlers are responsible for invoking event listeners/callback methods on Callback or Listener implementations. When a validation handler is set, the prePersist, preStore and preDelete callbacks will be routed through to this validation handler.

    • Method Detail

      • postCreate

        default void postCreate​(Object pc)
        Callback after the object has been created.
        Parameters:
        pc - The Object

      • prePersist

        default void prePersist​(Object pc)
        Callback before the object is persisted (just before the lifecycle state change).
        Parameters:
        pc - The Object

      • preStore

        default void preStore​(Object pc)
        Callback before the object is stored.
        Parameters:
        pc - The Object

      • postStore

        default void postStore​(Object pc)
        Callback after the object is stored.
        Parameters:
        pc - The Object

      • preClear

        default void preClear​(Object pc)
        Callback before the fields of the object are cleared.
        Parameters:
        pc - The Object

      • postClear

        default void postClear​(Object pc)
        Callback after the fields of the object are cleared.
        Parameters:
        pc - The Object

      • preDelete

        default void preDelete​(Object pc)
        Callback before the object is deleted.
        Parameters:
        pc - The Object

      • postDelete

        default void postDelete​(Object pc)
        Callback after the object is deleted.
        Parameters:
        pc - The Object

      • preDirty

        default void preDirty​(Object pc)
        Callback before the object is made dirty.
        Parameters:
        pc - The Object

      • postDirty

        default void postDirty​(Object pc)
        Callback after the object is made dirty.
        Parameters:
        pc - The Object

      • postLoad

        default void postLoad​(Object pc)
        Callback after the fields of the object are loaded.
        Parameters:
        pc - The Object

      • postRefresh

        default void postRefresh​(Object pc)
        Callback after the fields of the object are refreshed.
        Parameters:
        pc - The Object

      • preDetach

        default void preDetach​(Object pc)
        Callback before the object is detached.
        Parameters:
        pc - The Object

      • postDetach

        default void postDetach​(Object pc,
                        Object detachedPC)
        Callback after the object is detached.
        Parameters:
        pc - The Object
        detachedPC - The detached object

      • preAttach

        default void preAttach​(Object detachedPC)
        Callback before the object is attached.
        Parameters:
        detachedPC - The Object

      • postAttach

        default void postAttach​(Object pc,
                        Object detachedPC)
        Callback after the object is attached.
        Parameters:
        pc - The attached Object
        detachedPC - The detached object

      • addListener

        void addListener​(Object listener,
                 Class[] classes)
        Adds a new listener to this handler.
        Parameters:
        listener - the listener instance
        classes - the persistent classes which events are fired for the listener

      • removeListener

        void removeListener​(Object listener)
        Remove a listener for this handler.
        Parameters:
        listener - the listener instance

      • close

        void close()
        Clear any objects to release resources.