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Merge pull request #1930 from akka/wip-3710-UnsubscribeTransitionCallback-patriknw

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=act #3710 Correct doc of FSM unregistering listener
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Patrik Nordwall 2014-01-17 02:26:30 -08:00
commit a04a784121
2 changed files with 7 additions and 6 deletions
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7
akka-actor/src/main/scala/akka/actor/FSM.scala
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@ -223,9 +223,10 @@ object FSM {
* the first matching one.
*
* Another feature is that other actors may subscribe for transition events by
* sending a <code>SubscribeTransitionCallback</code> message to this actor;
* use <code>UnsubscribeTransitionCallback</code> before stopping the other
* actor.
* sending a <code>SubscribeTransitionCallback</code> message to this actor.
* Stopping a listener without unregistering will not remove the listener from the
* subscription list; use <code>UnsubscribeTransitionCallback</code> before stopping
* the listener.
*
* State timeouts set an upper bound to the time which may pass before another
* message is received in the current state. If no external message is

6
akka-docs/rst/scala/fsm.rst
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@ -330,9 +330,9 @@ and will receive :class:`Transition(actorRef, oldState, newState)` messages
whenever a new state is reached. External monitors may be unregistered by
sending :class:`UnsubscribeTransitionCallBack(actorRef)` to the FSM actor.
Registering a not-running listener generates a warning and fails gracefully.
Stopping a listener without unregistering will remove the listener from the
subscription list upon the next transition.
Stopping a listener without unregistering will not remove the listener from the
subscription list; use :class:`UnsubscribeTransitionCallback` before stopping
the listener.
Transforming State
------------------