org.springframework.messaging.Message Maven / Gradle / Ivy
/*
* 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;
/**
* A generic message representation with headers and body.
*
* @author Mark Fisher
* @author Arjen Poutsma
* @since 4.0
* @param the payload type
* @see org.springframework.messaging.support.MessageBuilder
*/
public interface Message {
/**
* Return the message payload.
*/
T getPayload();
/**
* Return message headers for the message (never {@code null} but may be empty).
*/
MessageHeaders getHeaders();
}