Comments (3)
Thanks for reporting this issue. Normally transition should only be triggered once when single event fired. I don't know what is the problem now. It would be helpful if you could provide complete runnable test case to reproduce the issue.
from squirrel.
It's weird because I'm just checking the FSM with keyboard events.
public class OrangutanWriter {
private static OrangutanWriterFSM StateMachine;
public static void setup() {
StateMachineBuilder<OrangutanWriterFSM, FSMState, FSMEvent, Void> builder = StateMachineBuilderFactory
.create(OrangutanWriterFSM.class, FSMState.class,
FSMEvent.class, Void.class);
builder.onExit(FSMState.StandBy).callMethod("exitStandBy");
builder.externalTransition().from(FSMState.StandBy).to(FSMState.Stream)
.on(FSMEvent.Connected).callMethod("entryStream");
builder.onExit(FSMState.Stream).callMethod("exitStream");
builder.externalTransition().from(FSMState.Stream).to(FSMState.Encode)
.on(FSMEvent.EncodeList).callMethod("Encode");
// 4. Use State Machine
StateMachine = builder.newStateMachine(FSMState.StandBy);
}
public static void main(String[] args) {
setup();
StateMachine.start();
while (true) {
int myint = 0;
Scanner keyboard = new Scanner(System.in);
System.out.println("You are at: " + StateMachine.getCurrentState()
+ "\nEnter an integer:");
myint = keyboard.nextInt();
switch (myint) {
case 1:
System.out.println("My Int = " + myint);
StateMachine.fire(FSMEvent.Connected);
myint = 0;
break;
case 4:
StateMachine.fire(FSMEvent.EncodeList);
break;
case 5:
StateMachine.fire(FSMEvent.StopEncode);
break;
default:
break;
}
}
}
}
from squirrel.
FSM will call method "exitStandBy" when you initial FSM.
like this.
StateMachine = builder.newStateMachine(FSMState.StandBy);
Because of this code.
builder.onExit(FSMState.StandBy).callMethod("exitStandBy");
You can avoid initial call by check FSMEvent is not null.
protected void exitStandBy(FSMState from, FSMState to, FSMEvent event, Void context) { if (event != null) { //your code } }
from squirrel.
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from squirrel.