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ActiveMQ example source code file (JMSUsecaseTest.java)

This example ActiveMQ source code file (JMSUsecaseTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - ActiveMQ tags/keywords

activemqdestination, activemqmessage, enumeration, exception, exception, jmstestsupport, message, messageconsumer, messageproducer, messageproducer, object, object, session, session, util

The ActiveMQ JMSUsecaseTest.java source code

/**
 * 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 org.apache.activemq;

import java.util.Enumeration;

import javax.jms.DeliveryMode;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Queue;
import javax.jms.QueueBrowser;
import javax.jms.Session;
import javax.jms.TextMessage;

import junit.framework.Test;

import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ActiveMQMessage;

public class JMSUsecaseTest extends JmsTestSupport {

    public ActiveMQDestination destination;
    public int deliveryMode;
    public int prefetch;
    public byte destinationType;
    public boolean durableConsumer;

    public static Test suite() {
        return suite(JMSUsecaseTest.class);
    }

    public static void main(String[] args) {
        junit.textui.TestRunner.run(suite());
    }

    public void initCombosForTestQueueBrowser() {
        addCombinationValues("deliveryMode", new Object[] {Integer.valueOf(DeliveryMode.NON_PERSISTENT), Integer.valueOf(DeliveryMode.PERSISTENT)});
        addCombinationValues("destinationType", new Object[] {Byte.valueOf(ActiveMQDestination.QUEUE_TYPE), Byte.valueOf(ActiveMQDestination.TEMP_QUEUE_TYPE)});
    }

    public void testQueueBrowser() throws Exception {

        // Send a message to the broker.
        connection.start();
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        destination = createDestination(session, destinationType);
        sendMessages(session, destination, 5);

        QueueBrowser browser = session.createBrowser((Queue)destination);
        Enumeration enumeration = browser.getEnumeration();
        for (int i = 0; i < 5; i++) {
            Thread.sleep(100);
            assertTrue(enumeration.hasMoreElements());
            Message m = (Message)enumeration.nextElement();
            assertNotNull(m);
            assertEquals("" + i, ((TextMessage)m).getText());
        }
        assertFalse(enumeration.hasMoreElements());
    }

    public void initCombosForTestSendReceive() {
        addCombinationValues("deliveryMode", new Object[] {Integer.valueOf(DeliveryMode.NON_PERSISTENT), Integer.valueOf(DeliveryMode.PERSISTENT)});
        addCombinationValues("destinationType", new Object[] {Byte.valueOf(ActiveMQDestination.QUEUE_TYPE), Byte.valueOf(ActiveMQDestination.TOPIC_TYPE),
                                                              Byte.valueOf(ActiveMQDestination.TEMP_QUEUE_TYPE), Byte.valueOf(ActiveMQDestination.TEMP_TOPIC_TYPE)});
    }

    public void testSendReceive() throws Exception {
        // Send a message to the broker.
        connection.start();
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        destination = createDestination(session, destinationType);
        MessageProducer producer = session.createProducer(destination);
        MessageConsumer consumer = session.createConsumer(destination);
        ActiveMQMessage message = new ActiveMQMessage();
        producer.send(message);

        // Make sure only 1 message was delivered.
        assertNotNull(consumer.receive(1000));
        assertNull(consumer.receiveNoWait());
    }

    public void initCombosForTestSendReceiveTransacted() {
        addCombinationValues("deliveryMode", new Object[] {Integer.valueOf(DeliveryMode.NON_PERSISTENT), Integer.valueOf(DeliveryMode.PERSISTENT)});
        addCombinationValues("destinationType", new Object[] {Byte.valueOf(ActiveMQDestination.QUEUE_TYPE), Byte.valueOf(ActiveMQDestination.TOPIC_TYPE),
                                                              Byte.valueOf(ActiveMQDestination.TEMP_QUEUE_TYPE), Byte.valueOf(ActiveMQDestination.TEMP_TOPIC_TYPE)});
    }

    public void testSendReceiveTransacted() throws Exception {
        // Send a message to the broker.
        connection.start();
        Session session = connection.createSession(true, Session.SESSION_TRANSACTED);
        destination = createDestination(session, destinationType);
        MessageProducer producer = session.createProducer(destination);
        MessageConsumer consumer = session.createConsumer(destination);
        producer.send(session.createTextMessage("test"));

        // Message should not be delivered until commit.
        assertNull(consumer.receiveNoWait());
        session.commit();

        // Make sure only 1 message was delivered.
        Message message = consumer.receive(1000);
        assertNotNull(message);
        assertFalse(message.getJMSRedelivered());
        assertNull(consumer.receiveNoWait());

        // Message should be redelivered is rollback is used.
        session.rollback();

        // Make sure only 1 message was delivered.
        message = consumer.receive(2000);
        assertNotNull(message);
        assertTrue(message.getJMSRedelivered());
        assertNull(consumer.receiveNoWait());

        // If we commit now, the message should not be redelivered.
        session.commit();
        assertNull(consumer.receiveNoWait());
    }

}

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