JMS Subscriptions - Java Message

Java examples for Message:JMS

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Description

JMS Subscriptions

Demo Code

/*//from ww  w.j  a v  a2 s .c  om
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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
 *
 *     http://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 com.redhat.workshop.amq7.addressing;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.Session;
import javax.jms.Topic;
import javax.naming.InitialContext;
import java.util.UUID;

public class JMSSubscriptions {

    public static void main(String args[]) throws Exception {

        try {
            InitialContext context = new InitialContext();

            Topic volatileSubscription = (Topic) context
                    .lookup("volatileSubscription");
            Topic durableSubscription = (Topic) context
                    .lookup("durableSubscription");
            Topic sharedVolatileSubscription = (Topic) context
                    .lookup("sharedVolatileSubscription");
            Topic sharedDurableSubscription = (Topic) context
                    .lookup("sharedDurableSubscription");

            ConnectionFactory cf = (ConnectionFactory) context
                    .lookup("ConnectionFactory");

            try (Connection connection = cf.createConnection()) {
                connection.setClientID("ThisIsTheClientID");
                Session session = connection.createSession(false,
                        Session.AUTO_ACKNOWLEDGE);

                // Create volatile subscription
                MessageConsumer volatileSubcriber = session
                        .createConsumer(volatileSubscription);
                MessageConsumer durableSubcriber = session
                        .createDurableSubscriber(durableSubscription,
                                "durableSubName");
                MessageConsumer volatileSharedSubcriber = session
                        .createSharedConsumer(sharedVolatileSubscription,
                                "sharedVolatileSubName");
                MessageConsumer durableSharedSubcriber = session
                        .createSharedDurableConsumer(
                                sharedDurableSubscription,
                                "sharedDurableSubName");

                System.out.println("========================");
                System.out.println(" Created JMS Subscriptions");
                System.out.println("========================");

                while (true) {
                    Message m = null;
                    m = volatileSubcriber.receiveNoWait();
                    if (m != null) {
                        System.out.println("Volatile Subscriber: " + m);
                        m = null;
                    }

                    m = durableSubcriber.receiveNoWait();
                    if (m != null) {
                        System.out.println("Durable Subscriber: " + m);
                        m = null;
                    }

                    m = volatileSharedSubcriber.receiveNoWait();
                    if (m != null) {
                        System.out.println("Shared Volatile Subscriber: "
                                + m);
                        m = null;
                    }

                    m = durableSharedSubcriber.receiveNoWait();
                    if (m != null) {
                        System.out.println("Shared Durable Subscriber: "
                                + m);
                        m = null;
                    }

                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

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