org.springframework.statemachine.support.StateMachineInterceptorAdapter.java Source code

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Here is the source code for org.springframework.statemachine.support.StateMachineInterceptorAdapter.java

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/*
 * Copyright 2015-2019 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.support;

import org.springframework.messaging.Message;
import org.springframework.statemachine.StateContext;
import org.springframework.statemachine.StateMachine;
import org.springframework.statemachine.state.State;
import org.springframework.statemachine.transition.Transition;

/**
 * Adapter helper implementation for {@link StateMachineInterceptor}.
 *
 * @author Janne Valkealahti
 *
 * @param <S> the type of state
 * @param <E> the type of event
 */
public class StateMachineInterceptorAdapter<S, E> implements StateMachineInterceptor<S, E> {

    @Override
    public Message<E> preEvent(Message<E> message, StateMachine<S, E> stateMachine) {
        return message;
    }

    @Override
    public void preStateChange(State<S, E> state, Message<E> message, Transition<S, E> transition,
            StateMachine<S, E> stateMachine) {
    }

    @Override
    public void preStateChange(State<S, E> state, Message<E> message, Transition<S, E> transition,
            StateMachine<S, E> stateMachine, StateMachine<S, E> rootStateMachine) {
    }

    @Override
    public void postStateChange(State<S, E> state, Message<E> message, Transition<S, E> transition,
            StateMachine<S, E> stateMachine) {
    }

    @Override
    public void postStateChange(State<S, E> state, Message<E> message, Transition<S, E> transition,
            StateMachine<S, E> stateMachine, StateMachine<S, E> rootStateMachine) {
    }

    @Override
    public StateContext<S, E> preTransition(StateContext<S, E> stateContext) {
        return stateContext;
    }

    @Override
    public StateContext<S, E> postTransition(StateContext<S, E> stateContext) {
        return stateContext;
    }

    @Override
    public Exception stateMachineError(StateMachine<S, E> stateMachine, Exception exception) {
        return exception;
    }
}