001/* 002 * Copyright 2002-2020 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.jms.core; 018 019import javax.jms.JMSException; 020import javax.jms.Message; 021 022/** 023 * To be used with JmsTemplate's send method that converts an object to a message. 024 * 025 * <p>This allows for further modification of the message after it has been processed 026 * by the converter and is useful for setting JMS headers and properties. 027 * 028 * <p>Often implemented as a lambda expression or as an anonymous inner class. 029 * 030 * @author Mark Pollack 031 * @since 1.1 032 * @see JmsTemplate#convertAndSend(String, Object, MessagePostProcessor) 033 * @see JmsTemplate#convertAndSend(javax.jms.Destination, Object, MessagePostProcessor) 034 * @see org.springframework.jms.support.converter.MessageConverter 035 */ 036@FunctionalInterface 037public interface MessagePostProcessor { 038 039 /** 040 * Process the given message. 041 * <p>The returned message is typically a modified version of the original. 042 * @param message the JMS message from the MessageConverter 043 * @return a post-processed variant of the message, or simply the incoming 044 * message; never {@code null} 045 * @throws javax.jms.JMSException if thrown by JMS API methods 046 */ 047 Message postProcessMessage(Message message) throws JMSException; 048 049}