---+ Entity Change Notifications To receive Atlas entity notifications a consumer should be obtained through the notification interface. Entity change notifications are sent every time a change is made to an entity. Operations that result in an entity change notification are: * <code>ENTITY_CREATE</code> - Create a new entity. * <code>ENTITY_UPDATE</code> - Update an attribute of an existing entity. * <code>TRAIT_ADD</code> - Add a trait to an entity. * <code>TRAIT_DELETE</code> - Delete a trait from an entity. <verbatim> // Obtain provider through injection… Provider<NotificationInterface> provider; // Get the notification interface NotificationInterface notification = provider.get(); // Create consumers List<NotificationConsumer<EntityNotification>> consumers = notification.createConsumers(NotificationInterface.NotificationType.ENTITIES, 1); </verbatim> The consumer exposes the Iterator interface that should be used to get the entity notifications as they are posted. The hasNext() method blocks until a notification is available. <verbatim> while(consumer.hasNext()) { EntityNotification notification = consumer.next(); IReferenceableInstance entity = notification.getEntity(); … } </verbatim>