Java tutorial
/* * Copyright 2016-2019 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * https://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.springframework.statemachine.action; import java.util.function.Function; import org.springframework.statemachine.StateContext; import org.springframework.statemachine.StateMachine; import reactor.core.publisher.Mono; /** * {@code ActionListener} for various action events. * * @author Janne Valkealahti * * @param <S> the type of state * @param <E> the type of event */ public interface ActionListener<S, E> { /** * Notified duration of a particular action. * * @param stateMachine the state machine * @param action the action * @param duration the transition duration */ void onExecute(StateMachine<S, E> stateMachine, Function<StateContext<S, E>, Mono<Void>> action, long duration); }