package org.squirrelframework.foundation.fsm.samples;
import org.squirrelframework.foundation.fsm.StateMachineBuilderFactory;
import org.squirrelframework.foundation.fsm.UntypedStateMachine;
import org.squirrelframework.foundation.fsm.UntypedStateMachineBuilder;
import org.squirrelframework.foundation.fsm.annotation.StateMachineParameters;
import org.squirrelframework.foundation.fsm.impl.AbstractUntypedStateMachine;
public class QuickStartSample {
// 1. Define State Machine Event
enum FSMEvent {
ToA, ToB, ToC, ToD
}
// 2. Define State Machine Class
@StateMachineParameters(stateType=String.class, eventType=FSMEvent.class, contextType=Integer.class)
static class StateMachineSample extends AbstractUntypedStateMachine {
protected void fromAToB(String from, String to, FSMEvent event, Integer context) {
System.out.println("Transition from '"+from+"' to '"+to+"' on event '"+event+
"' with context '"+context+"'.");
}
protected void ontoB(String from, String to, FSMEvent event, Integer context) {
System.out.println("Entry State \'"+to+"\'.");
}
}
public static void main(String[] args) {
// 3. Build State Transitions
UntypedStateMachineBuilder builder = StateMachineBuilderFactory.create(StateMachineSample.class);
builder.externalTransition().from("A").to("B").on(FSMEvent.ToB).callMethod("fromAToB");
builder.onEntry("B").callMethod("ontoB");
// 4. Use State Machine
UntypedStateMachine fsm = builder.newStateMachine("A");
fsm.fire(FSMEvent.ToB, 10);
System.out.println("Current state is "+fsm.getCurrentState());
}
}