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  package org.apache.cayenne;
  
  import org.apache.cayenne.reflect.LifecycleCallbackRegistry;
  
  /**
   * A callback interface to listen to persistent object lifecycle events. Note that
   * listeners ARE NOT REQUIRED to implement this interface, and in fact most won't. It
   * exists for type safety and for simplifying listener registration. See
   * {@link LifecycleCallbackRegistry} for details on how to register callbacks.
   * 
   * @since 3.0
   */
  public interface LifecycleListener {
  
      void postAdd(Object entity);
      
      void prePersist(Object entity);
  
      void postPersist(Object entity);
  
      void preRemove(Object entity);
  
      void postRemove(Object entity);
  
      void preUpdate(Object entity);
  
      void postUpdate(Object entity);
  
      void postLoad(Object entity);
  }
  