Java tutorial
/* * Copyright 2002-2018 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.messaging.support; import org.springframework.lang.Nullable; import org.springframework.messaging.Message; import org.springframework.messaging.MessageChannel; /** * A {@link ChannelInterceptor} base class with empty method implementations * as a convenience. * * @author Mark Fisher * @author Rossen Stoyanchev * @since 4.0 * @deprecated as of 5.0.7 {@link ChannelInterceptor} has default methods (made * possible by a Java 8 baseline) and can be implemented directly without the * need for this no-op adapter */ @Deprecated public abstract class ChannelInterceptorAdapter implements ChannelInterceptor { @Override public Message<?> preSend(Message<?> message, MessageChannel channel) { return message; } @Override public void postSend(Message<?> message, MessageChannel channel, boolean sent) { } @Override public void afterSendCompletion(Message<?> message, MessageChannel channel, boolean sent, @Nullable Exception ex) { } public boolean preReceive(MessageChannel channel) { return true; } @Override public Message<?> postReceive(Message<?> message, MessageChannel channel) { return message; } @Override public void afterReceiveCompletion(@Nullable Message<?> message, MessageChannel channel, @Nullable Exception ex) { } }