Hi folks,
Good day. I'm just starting with Akka (Java with Lambda) and I have a
question regarding AbstractFSM.
When using "*akka.actor.FSM.State.using(Data)*" does "*Data*" need to be
immutable?
Example:
*when(State.Idle,*
* matchEvent(Event.class, StateData.class,*
* (event, stateData) ->*
* stay().using(new StateData())));*
* when(State.Active,*
* matchEvent(Event.class, StateData.class,*
* (event, stateData) -> goTo(State.Idle).using(stateData.mutate())));*
.......
* public class StateData{*
* public StateData mutate(){*
* //mutate myself*
* return this;*
* }*
Is it safe to mutate the data this way? I'm uncertain since I saw that
"*akka.actor.AbstractFSM.onTransition(PartialFunction<Tuple2<BatchingState,
BatchingState>, BoxedUnit>)*" allows you to access both the current
stateData and the nextStateData.
Any help would be much appreciated. Thanks and have a great day.
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