Example usage for org.springframework.statemachine.transition DefaultExternalTransition DefaultExternalTransition

Introduction

In this page you can find the example usage for org.springframework.statemachine.transition DefaultExternalTransition DefaultExternalTransition.

Prototype

public DefaultExternalTransition(State<S, E> source, State<S, E> target,
        Collection<Function<StateContext<S, E>, Mono<Void>>> actions, E event,
        Function<StateContext<S, E>, Mono<Boolean>> guard, Trigger<S, E> trigger) 

Source Link

Document

Instantiates a new default external transition.

Usage

From source file:org.springframework.statemachine.EnumStateMachineTests.java

@Test
public void testSimpleStateSwitch() {
    PseudoState<TestStates, TestEvents> pseudoState = new DefaultPseudoState<TestStates, TestEvents>(
            PseudoStateKind.INITIAL);/*from www  .ja  v a 2s.co  m*/
    State<TestStates, TestEvents> stateSI = new EnumState<TestStates, TestEvents>(TestStates.SI, pseudoState);
    State<TestStates, TestEvents> stateS1 = new EnumState<TestStates, TestEvents>(TestStates.S1);
    State<TestStates, TestEvents> stateS2 = new EnumState<TestStates, TestEvents>(TestStates.S2);
    State<TestStates, TestEvents> stateS3 = new EnumState<TestStates, TestEvents>(TestStates.S3);

    Collection<State<TestStates, TestEvents>> states = new ArrayList<State<TestStates, TestEvents>>();
    states.add(stateSI);
    states.add(stateS1);
    states.add(stateS2);
    states.add(stateS3);

    Collection<Transition<TestStates, TestEvents>> transitions = new ArrayList<Transition<TestStates, TestEvents>>();

    Collection<Action<TestStates, TestEvents>> actionsFromSIToS1 = new ArrayList<Action<TestStates, TestEvents>>();
    actionsFromSIToS1.add(new LoggingAction("actionsFromSIToS1"));
    DefaultExternalTransition<TestStates, TestEvents> transitionFromSIToS1 = new DefaultExternalTransition<TestStates, TestEvents>(
            stateSI, stateS1, actionsFromSIToS1, TestEvents.E1, null,
            new EventTrigger<TestStates, TestEvents>(TestEvents.E1));

    Collection<Action<TestStates, TestEvents>> actionsFromS1ToS2 = new ArrayList<Action<TestStates, TestEvents>>();
    actionsFromS1ToS2.add(new LoggingAction("actionsFromS1ToS2"));
    DefaultExternalTransition<TestStates, TestEvents> transitionFromS1ToS2 = new DefaultExternalTransition<TestStates, TestEvents>(
            stateS1, stateS2, actionsFromS1ToS2, TestEvents.E2, null,
            new EventTrigger<TestStates, TestEvents>(TestEvents.E2));

    Collection<Action<TestStates, TestEvents>> actionsFromS2ToS3 = new ArrayList<Action<TestStates, TestEvents>>();
    actionsFromS1ToS2.add(new LoggingAction("actionsFromS2ToS3"));
    DefaultExternalTransition<TestStates, TestEvents> transitionFromS2ToS3 = new DefaultExternalTransition<TestStates, TestEvents>(
            stateS2, stateS3, actionsFromS2ToS3, TestEvents.E3, null,
            new EventTrigger<TestStates, TestEvents>(TestEvents.E3));

    transitions.add(transitionFromSIToS1);
    transitions.add(transitionFromS1ToS2);
    transitions.add(transitionFromS2ToS3);

    SyncTaskExecutor taskExecutor = new SyncTaskExecutor();
    BeanFactory beanFactory = new DefaultListableBeanFactory();
    ObjectStateMachine<TestStates, TestEvents> machine = new ObjectStateMachine<TestStates, TestEvents>(states,
            transitions, stateSI);
    machine.setTaskExecutor(taskExecutor);
    machine.setBeanFactory(beanFactory);
    machine.afterPropertiesSet();
    machine.start();

    State<TestStates, TestEvents> initialState = machine.getInitialState();
    assertThat(initialState, is(stateSI));

    State<TestStates, TestEvents> state = machine.getState();
    assertThat(state, is(stateSI));

    machine.sendEvent(MessageBuilder.withPayload(TestEvents.E1).build());
    state = machine.getState();
    assertThat(state, is(stateS1));

    machine.sendEvent(MessageBuilder.withPayload(TestEvents.E2).build());
    state = machine.getState();
    assertThat(state, is(stateS2));

    // not processed
    machine.sendEvent(MessageBuilder.withPayload(TestEvents.E1).build());
    state = machine.getState();
    assertThat(state, is(stateS2));

    machine.sendEvent(MessageBuilder.withPayload(TestEvents.E3).build());
    state = machine.getState();
    assertThat(state, is(stateS3));
}

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From source file:org.springframework.statemachine.EnumStateMachineTests.java

@Test
public void testDeferredEvents() {
    PseudoState<TestStates, TestEvents> pseudoState = new DefaultPseudoState<TestStates, TestEvents>(
            PseudoStateKind.INITIAL);//from w  ww . j a v  a2s. com

    Collection<TestEvents> deferred = new ArrayList<TestEvents>();
    deferred.add(TestEvents.E2);
    deferred.add(TestEvents.E3);

    // states
    State<TestStates, TestEvents> stateSI = new EnumState<TestStates, TestEvents>(TestStates.SI, deferred, null,
            null, pseudoState);
    State<TestStates, TestEvents> stateS1 = new EnumState<TestStates, TestEvents>(TestStates.S1);
    State<TestStates, TestEvents> stateS2 = new EnumState<TestStates, TestEvents>(TestStates.S2);
    State<TestStates, TestEvents> stateS3 = new EnumState<TestStates, TestEvents>(TestStates.S3);

    Collection<State<TestStates, TestEvents>> states = new ArrayList<State<TestStates, TestEvents>>();
    states.add(stateSI);
    states.add(stateS1);
    states.add(stateS2);
    states.add(stateS3);

    // transitions
    Collection<Transition<TestStates, TestEvents>> transitions = new ArrayList<Transition<TestStates, TestEvents>>();

    Collection<Action<TestStates, TestEvents>> actionsFromSIToS1 = new ArrayList<Action<TestStates, TestEvents>>();
    actionsFromSIToS1.add(new LoggingAction("actionsFromSIToS1"));
    DefaultExternalTransition<TestStates, TestEvents> transitionFromSIToS1 = new DefaultExternalTransition<TestStates, TestEvents>(
            stateSI, stateS1, actionsFromSIToS1, TestEvents.E1, null,
            new EventTrigger<TestStates, TestEvents>(TestEvents.E1));

    Collection<Action<TestStates, TestEvents>> actionsFromS1ToS2 = new ArrayList<Action<TestStates, TestEvents>>();
    actionsFromS1ToS2.add(new LoggingAction("actionsFromS1ToS2"));
    DefaultExternalTransition<TestStates, TestEvents> transitionFromS1ToS2 = new DefaultExternalTransition<TestStates, TestEvents>(
            stateS1, stateS2, actionsFromS1ToS2, TestEvents.E2, null,
            new EventTrigger<TestStates, TestEvents>(TestEvents.E2));

    Collection<Action<TestStates, TestEvents>> actionsFromS2ToS3 = new ArrayList<Action<TestStates, TestEvents>>();
    actionsFromS1ToS2.add(new LoggingAction("actionsFromS2ToS3"));
    DefaultExternalTransition<TestStates, TestEvents> transitionFromS2ToS3 = new DefaultExternalTransition<TestStates, TestEvents>(
            stateS2, stateS3, actionsFromS2ToS3, TestEvents.E3, null,
            new EventTrigger<TestStates, TestEvents>(TestEvents.E3));

    transitions.add(transitionFromSIToS1);
    transitions.add(transitionFromS1ToS2);
    transitions.add(transitionFromS2ToS3);

    // create machine
    SyncTaskExecutor taskExecutor = new SyncTaskExecutor();
    BeanFactory beanFactory = new DefaultListableBeanFactory();
    ObjectStateMachine<TestStates, TestEvents> machine = new ObjectStateMachine<TestStates, TestEvents>(states,
            transitions, stateSI);
    machine.setTaskExecutor(taskExecutor);
    machine.setBeanFactory(beanFactory);
    machine.afterPropertiesSet();
    machine.start();

    State<TestStates, TestEvents> initialState = machine.getInitialState();
    assertThat(initialState, is(stateSI));

    State<TestStates, TestEvents> state = machine.getState();
    assertThat(state, is(stateSI));

    machine.sendEvent(MessageBuilder.withPayload(TestEvents.E2).build());
    machine.sendEvent(MessageBuilder.withPayload(TestEvents.E3).build());
    state = machine.getState();
    assertThat(state, is(stateSI));

    machine.sendEvent(MessageBuilder.withPayload(TestEvents.E1).build());
    state = machine.getState();
    assertThat(state, is(stateS3));
}

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