Java tutorial
/* * Copyright 2002-2017 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.jms.config; import javax.jms.MessageListener; import org.springframework.jms.listener.MessageListenerContainer; import org.springframework.lang.Nullable; import org.springframework.util.Assert; /** * A {@link JmsListenerEndpoint} simply providing the {@link MessageListener} to * invoke to process an incoming message for this endpoint. * * @author Stephane Nicoll * @since 4.1 */ public class SimpleJmsListenerEndpoint extends AbstractJmsListenerEndpoint { @Nullable private MessageListener messageListener; /** * Set the {@link MessageListener} to invoke when a message matching * the endpoint is received. */ public void setMessageListener(@Nullable MessageListener messageListener) { this.messageListener = messageListener; } /** * Return the {@link MessageListener} to invoke when a message matching * the endpoint is received. */ @Nullable public MessageListener getMessageListener() { return this.messageListener; } @Override protected MessageListener createMessageListener(MessageListenerContainer container) { MessageListener listener = getMessageListener(); Assert.state(listener != null, "No MessageListener set"); return listener; } @Override protected StringBuilder getEndpointDescription() { return super.getEndpointDescription().append(" | messageListener='").append(this.messageListener) .append("'"); } }