[akka-user] [akka-persistence] Calling receiveRecover method inside persist block to be DRY

Fri, 26 Jun 2015 00:21:07 -0700

Hi,

Consider the following receives methods of a PersistentActor:
override def receiveRecover: Receive = {
  case CityAdded(v) => addCity(v)
  case CityRemoved(v) => removeCity(v)
}

override def receiveCommand: Receive = {
  case AddCity(c) => persist(CityAdded(c))(event => addCity(event.cityId))
  case RemoveCity(c) => persist(CityRemoved(c))(event => removeCity(event.cityId))
}
We can call receiveRecover inside the persist block which is more DRY. Like this:
override def receiveRecover: Receive = {
  case CityAdded(v) => addCity(v)
  case CityRemoved(v) => removeCity(v)
}

override def receiveCommand: Receive = {
  case AddCity(c) => persist(CityAdded(c))(receiveRecover(_))
  case RemoveCity(c) => persist(CityRemoved(c))(receiveRecover(_))
}

Is it correct? I didn't see anyone do that. What is the problem?

Regards,
Amir

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