Example 2: A simple action

Extending the previous example, an action will occur during the transition from STATE_OFF to STATE_ON. For this reason we define an action:

public class TurnLightsOnAction extends AbstractAction {
    @Override
    public void execute(StateContext context) throws ActionException {
        System.out.println("Action: Turned the lights on!");
    }
}

    <bean id="actionTurnLightsOn" 
          class=" gr.ekt.fsmengine.example2.TurnLightsOnAction" />

And we associate the action with the transition.

    <!-- Transitions -->
    <bean id="transition" class="gr.ekt.fsmengine.api.DefaultTransition">
        <property name="fromState" ref="stateOff" />
        <property name="toState" ref="stateOn" />
        <property name="actions">
            <list>
                <ref bean="actionTurnLightsOn"/>
            </list>
        </property>
    </bean>

The complete declaration is under conf/context-example2.xml.

Run src/test/java/gr.ekt.fsmengine.example2.Run to see the execution flow.