ninja.ugly.prevail.event.factory

Interface EventFactory<K,V>

Type Parameters:

K - The type of key on the Chunk operation

V - The type of value on the Chunk operation, or Object for delete operations.

All Known Subinterfaces:

DeleteEventFactory<K>, InsertEventFactory<K,V>, QueryEventFactory<K,V>, UpdateEventFactory<K,V>

All Known Implementing Classes:

DeleteEndEventFactory, DeleteEventFactory.EmptyDeleteEventFactory, InsertEndEventFactory, InsertEventFactory.EmptyInsertEventFactory, QueryEndEventFactory, QueryEventFactory.EmptyQueryEventFactory, UpdateEndEventFactory, UpdateEventFactory.EmptyUpdateEventFactory

public interface EventFactory<K,V>

A marker interface for all EventFactories.

An EventFactory is used by Chunk operations to obtain events to be dispatched throughout the operation lifecycle. Those events are then dispatched using an EventDispatcher registered on the Chunk.

Commonly EventFactories will provide events describing the start and end of an operation, perhaps so that feedback may be given on a UI about the duration of the operation. The 'end' event may also contain the result of the Chunk operation. Any exceptions occuring during the Chunk operation may also be returned as events. Some EventFactories may also choose to dispatch events describing the progress of any chunk operation.