生命周期组件框架：生命周期描述语言——可继承状态机示例
@StateMachine protected static interface CustomerLifecycleMeta { @StateSet static interface States { @Initial @Function(transition = CustomerLifecycleMeta.Transitions.Activate.class, value = { Active.class }) static interface Draft {} @Functions({ @Function(transition = CustomerLifecycleMeta.Transitions.Suspend.class, value = Suspended.class), @Function(transition = CustomerLifecycleMeta.Transitions.Cancel.class, value = Canceled.class) }) static interface Active {} @Function(transition = CustomerLifecycleMeta.Transitions.Resume.class, value = Active.class) static interface Suspended {} @End static interface Canceled {} } @TransitionSet static interface Transitions { static interface Activate {} static interface Suspend {} static interface Resume {} static interface Cancel {} } } @StateMachine protected static interface InternetServiceLifecycleMeta { @StateSet static interface States { @Initial @Function(transition = InternetServiceLifecycleMeta.Transitions.Start.class, value = { InternetServiceLifecycleMeta.States.InService.class }) @ValidWhile(on = { CustomerLifecycleMeta.States.Active.class }, relation = InternetServiceLifecycleMeta.Relations.CustomerRelation.class) static interface New {} @Function(transition = InternetServiceLifecycleMeta.Transitions.End.class, value = { InternetServiceLifecycleMeta.States.Ended.class }) // @InboundWhile(on = { CustomerLifecycleMeta.States.Active.class }, // relation = // InternetServiceLifecycleMeta.Relations.CustomerRelation.class) static interface InService {} @End static interface Ended {} } @TransitionSet static interface Transitions { static interface Start {} static interface End {} } @RelationSet static interface Relations { @RelateTo(value = CustomerLifecycleMeta.class) static interface CustomerRelation {} } } @StateMachine protected static interface ServiceProviderLifecycle { @StateSet static interface States { @Initial @Function(transition = Transitions.Shutdown.class, value = Closed.class) static interface ServiceAvailable {} @End static interface Closed {} } @TransitionSet static interface Transitions { static interface Shutdown {} } } @StateMachine protected static interface InternetTVServiceLifecycle extends InternetServiceLifecycleMeta { @StateSet static interface States extends InternetServiceLifecycleMeta.States { @ValidWhile(relation = TVProvider.class, on = ServiceAvailable.class) static interface New extends InternetServiceLifecycleMeta.States.New {} } @RelationSet static interface Relations extends InternetServiceLifecycleMeta.Relations { @RelateTo(InternetTVProviderLifecycle.class) static interface TVProvider {} } } @StateMachine protected static interface InternetTVProviderLifecycle extends ServiceProviderLifecycle {}?
@LifecycleMeta(CustomerLifecycleMeta.class) public static class Customer extends ReactiveObject { protected Customer() { initialState(Draft.class.getSimpleName()); } @Transition public void activate() {} @Transition public void suspend() {} @Transition public void resume() {} @Transition public void cancel() {} } @LifecycleMeta(InternetServiceLifecycleMeta.class) public class InternetServiceOrder extends ReactiveObject { private Date startDate; private Date endDate; @Relation(InternetServiceLifecycleMeta.Relations.CustomerRelation.class) private Customer customer; private String type; public InternetServiceOrder() { initialState(InternetServiceLifecycleMeta.States.New.class.getSimpleName()); } public InternetServiceOrder(Date startDate, Date endDate, Customer customer, String type) { super(); this.startDate = startDate; this.endDate = endDate; this.customer = customer; this.type = type; initialState(InternetServiceLifecycleMeta.States.New.class.getSimpleName()); } @Transition public void start() {} @Transition public void end() {} public void setStartDate(Date startDate) { this.startDate = startDate; } public void setEndDate(Date endDate) { this.endDate = endDate; } public void setCustomer(Customer customer) { this.customer = customer; } public void setType(String type) { this.type = type; } public Date getStartDate() { return startDate; } public Date getEndDate() { return endDate; } public Customer getCustomer() { return customer; } public String getType() { return type; } }?
@LifecycleMeta(InternetServiceLifecycleMeta.class) public static class BaseService<T extends BaseServiceProvider> extends ReactiveObject { private Customer customer; public BaseService(Customer customer) { initialState(InternetServiceLifecycleMeta.States.New.class.getSimpleName()); this.customer = customer; } private T provider; public T getProvider() { return provider; } public void setProvider(T provider) { this.provider = provider; } @Relation(InternetServiceLifecycleMeta.Relations.CustomerRelation.class) public Customer getCustomer() { return customer; } public void setCustomer(Customer customer) { this.customer = customer; } @Transition void start() {} @Transition void end() {} } @LifecycleMeta(ServiceProviderLifecycle.class) public static class BaseServiceProvider extends ReactiveObject { public BaseServiceProvider() { initialState(ServiceProviderLifecycle.States.ServiceAvailable.class.getSimpleName()); } @Transition void shutdown() {} } @LifecycleMeta(InternetTVServiceLifecycle.class) public static class InternetTVService extends BaseService<InternetTVServiceProvider> { public InternetTVService(Customer customer) { super(customer); } @Relation(InternetTVServiceLifecycle.Relations.TVProvider.class) public InternetTVServiceProvider getProvider() { return super.getProvider(); } } @LifecycleMeta(InternetTVProviderLifecycle.class) public static class InternetTVServiceProvider extends BaseServiceProvider {}?
@Test public void test_inherited_valid_while_relation_validation() { final InternetTVServiceProvider provider = new InternetTVServiceProvider(); assertEquals(InternetTVProviderLifecycle.States.ServiceAvailable.class.getSimpleName(), provider.getState()); Customer customer = new Customer(); customer.activate(); assertEquals(CustomerLifecycleMeta.States.Active.class.getSimpleName(), customer.getState()); final InternetTVService service = new InternetTVService(customer); service.setProvider(provider); service.start(); assertEquals(InternetServiceLifecycleMeta.States.InService.class.getSimpleName(), service.getState()); } @Test(expected = LifecycleException.class) public void test_inherited_valid_while_relation_validation_negative_with_self_valid_while() throws LifecycleException { final InternetTVServiceProvider provider = new InternetTVServiceProvider(); assertEquals(InternetTVProviderLifecycle.States.ServiceAvailable.class.getSimpleName(), provider.getState()); provider.shutdown(); assertEquals(InternetTVProviderLifecycle.States.Closed.class.getSimpleName(), provider.getState()); final Customer customer = new Customer(); customer.activate(); assertEquals(CustomerLifecycleMeta.States.Active.class.getSimpleName(), customer.getState()); final InternetTVService service = new InternetTVService(customer); service.setProvider(provider); try { service.start(); } catch (LifecycleException e) { assertInvalidStateErrorByValidWhile(e, provider, service, VOIPProviderLifecycleMeta.States.ServiceAvailable.class); } }?前文：生命周期组件框架——关系型状态及服务