Examples of TopicPublisher

javax.jms.TopicPublisher
A client uses a TopicPublisher object to publish messages on a topic. A TopicPublisher object is the publish-subscribe form of a message producer.
Normally, the Topic is specified when a TopicPublisher is created. In this case, an attempt to use the publish methods for an unidentified TopicPublisher will throw a java.lang.UnsupportedOperationException.
If the TopicPublisher is created with an unidentified Topic, an attempt to use the publish methods that assume that the Topic has been identified will throw a java.lang.UnsupportedOperationException.
During the execution of its publish method, a message must not be changed by other threads within the client. If the message is modified, the result of the publish is undefined.
After publishing a message, a client may retain and modify it without affecting the message that has been published. The same message object may be published multiple times.
The following message headers are set as part of publishing a message: JMSDestination, JMSDeliveryMode, JMSExpiration, JMSPriority, JMSMessageID and JMSTimeStamp. When the message is published, the values of these headers are ignored. After completion of the publish, the headers hold the values specified by the method publishing the message. It is possible for the publish method not to set JMSMessageID and JMSTimeStamp if the setting of these headers is explicitly disabled by the MessageProducer.setDisableMessageID or MessageProducer.setDisableMessageTimestamp method.
Creating a MessageProducer provides the same features as creating a TopicPublisher. A MessageProducer object is recommended when creating new code. The TopicPublisher is provided to support existing code.
Because TopicPublisher inherits from MessageProducer, it inherits the send methods that are a part of the MessageProducer interface. Using the send methods will have the same effect as using the publish methods: they are functionally the same. @see Session#createProducer(Destination) @see TopicSession#createPublisher(Topic)

Examples of javax.jms.TopicPublisher


        TopicSubscriber select = session1.createSubscriber(topic,  "Selector = 'select'", false);
        TopicSubscriber normal = session1.createSubscriber(topic);




        TopicPublisher publisher = session1.createPublisher(topic);


        con.start();
        TextMessage m;
        TextMessage message;


        //send message to all consumers
        publisher.publish(session1.createTextMessage("hello-new2"));
        session1.commit();
        //test normal subscriber gets message
        m = (TextMessage) normal.receive(1000);
        assertNotNull(m);
        session1.commit();


        //test selector subscriber doesn't message
        m = (TextMessage) select.receive(1000);
        assertNull(m);
        session1.commit();


        //test nolocal subscriber doesn't message
        m = (TextMessage) noLocal.receive(1000);
        if (m != null)
        {
            System.out.println("Message:" + m.getText());
        }
        assertNull(m);


        //send message to all consumers
        message = session1.createTextMessage("hello2");
        message.setStringProperty("Selector", "select");


        publisher.publish(message);
        session1.commit();


        //test normal subscriber gets message
        m = (TextMessage) normal.receive(1000);
        assertNotNull(m);
        session1.commit();


        //test selector subscriber does get message
        m = (TextMessage) select.receive(1000);
        assertNotNull(m);
        session1.commit();


        //test nolocal subscriber doesn't message
        m = (TextMessage) noLocal.receive(100);
        assertNull(m);


        AMQConnection con2 = (AMQConnection) getClientConnection("guest", "guest", "foo");
        TopicSession session2 = con2.createTopicSession(true, AMQSession.AUTO_ACKNOWLEDGE);
        TopicPublisher publisher2 = session2.createPublisher(topic);




        message = session2.createTextMessage("hello2");
        message.setStringProperty("Selector", "select");


        publisher2.publish(message);
        session2.commit();


        //test normal subscriber gets message
        m = (TextMessage) normal.receive(1000);
        assertNotNull(m);

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Examples of javax.jms.TopicPublisher

         if (HornetQRASession.trace)
         {
            HornetQRASession.log.trace("createPublisher " + session + " topic=" + topic);
         }


         TopicPublisher result = session.createPublisher(topic);
         result = new HornetQRATopicPublisher(result, this);


         if (HornetQRASession.trace)
         {
            HornetQRASession.log.trace("createdPublisher " + session + " publisher=" + result);

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Examples of javax.jms.TopicPublisher

            if (base.isDestinationStyleQueue()) {
                QueueSender sender = (QueueSender)pooledSession.producer();
                sender.setTimeToLive(ttl);
                sender.send((Queue)base.targetDestination, jmsMessage, deliveryMode, priority, ttl);
            } else {
                TopicPublisher publisher = (TopicPublisher)pooledSession.producer();
                publisher.setTimeToLive(ttl);
                publisher.publish((Topic)base.targetDestination, jmsMessage, deliveryMode, priority, ttl);
            }
        }

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Examples of javax.jms.TopicPublisher

        PooledConnectionFactory pcf = new PooledConnectionFactory();
        pcf.setConnectionFactory(new ActiveMQConnectionFactory("vm://test"));


        connection = (TopicConnection) pcf.createConnection();
        TopicSession session = connection.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
        TopicPublisher publisher = session.createPublisher(topic);
        publisher.publish(session.createMessage());
    }

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Examples of javax.jms.TopicPublisher

            durConnection.stop();


            //create a publisher and send a persistant message followed by a non persistant message
            TopicConnection pubConnection = factory.createTopicConnection("guest", "guest");
            TopicSession pubSession = pubConnection.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
            TopicPublisher publisher = pubSession.createPublisher(topic);
            Message message = pubSession.createMessage();
            message.setIntProperty("count", 1);
            publisher.publish(message, javax.jms.DeliveryMode.PERSISTENT, javax.jms.Message.DEFAULT_PRIORITY,
                              javax.jms.Message.DEFAULT_TIME_TO_LIVE);
            message.setIntProperty("count", 2);
            publisher.publish(message, javax.jms.DeliveryMode.NON_PERSISTENT, javax.jms.Message.DEFAULT_PRIORITY,
                              javax.jms.Message.DEFAULT_TIME_TO_LIVE);
            publisher.close();
            pubSession.close();
            //now stop the server
            try
            {
                restartBroker();

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Examples of javax.jms.TopicPublisher

            }
            topic = (Topic) getInitialContext().lookup(_topicName);
            factory = getConnectionFactory();
            TopicConnection pubConnection = factory.createTopicConnection("guest", "guest");
            TopicSession pubSession = pubConnection.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
            TopicPublisher publisher = pubSession.createPublisher(topic);
            for (int i = 0; i < 5; i++)
            {
                Message message = pubSession.createMessage();
                message.setStringProperty("testprop", "true");
                publisher.publish(message);
                message = pubSession.createMessage();
                message.setStringProperty("testprop", "false");
                publisher.publish(message);
            }
            publisher.close();
            pubSession.close();


            //now recreate the durable subscriber and check the received messages
            TopicConnection durConnection2 = factory.createTopicConnection("guest", "guest");
            TopicSession durSession2 = durConnection2.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);

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Examples of javax.jms.TopicPublisher

        }
        
        //send messages matching and not matching the selector
        TopicConnection pubConnection = factory.createTopicConnection("guest", "guest");
        TopicSession pubSession = pubConnection.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
        TopicPublisher publisher = pubSession.createPublisher(topic);
        for (int i = 0; i < 5; i++)
        {
            Message message = pubSession.createMessage();
            message.setStringProperty("testprop", "true");
            publisher.publish(message);
            message = pubSession.createMessage();
            message.setStringProperty("testprop", "false");
            publisher.publish(message);
        }
        publisher.close();
        pubSession.close();


        //now recreate the durable subscriber with selector to check there are no exceptions generated
        //and then verify the messages are received correctly
        TopicConnection durConnection3 = (TopicConnection) factory.createConnection("guest", "guest");

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Examples of javax.jms.TopicPublisher

        }
        
        //send messages matching and not matching the original used selector
        TopicConnection pubConnection = factory.createTopicConnection("guest", "guest");
        TopicSession pubSession = pubConnection.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
        TopicPublisher publisher = pubSession.createPublisher(topic);
        for (int i = 1; i <= 5; i++)
        {
            Message message = pubSession.createMessage();
            message.setStringProperty("testprop", "true");
            publisher.publish(message);
            message = pubSession.createMessage();
            message.setStringProperty("testprop", "false");
            publisher.publish(message);
        }
        publisher.close();
        pubSession.close();


        //now recreate the durable subscriber without selector to check there are no exceptions generated
        //then verify ALL messages sent are received
        TopicConnection durConnection3 = (TopicConnection) factory.createConnection("guest", "guest");

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Examples of javax.jms.TopicPublisher


        AMQConnection con = (AMQConnection) getConnection("guest", "guest");
        AMQTopic topic = new AMQTopic(con.getDefaultTopicExchangeName(), "MyTopic");
        TopicSession session1 = con.createTopicSession(true, AMQSession.NO_ACKNOWLEDGE);
        TopicSubscriber sub = session1.createDurableSubscriber(topic, "subscription0");
        TopicPublisher publisher = session1.createPublisher(topic);


        con.start();


        TextMessage tm = session1.createTextMessage("Hello");
        publisher.publish(tm);
        session1.commit();


        tm = (TextMessage) sub.receive(2000);
        assertNotNull(tm);
        session1.commit();

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Examples of javax.jms.TopicPublisher

        AMQTopic topic = new AMQTopic(con, "MyTopic1" + String.valueOf(shutdown));
        AMQTopic topic2 = new AMQTopic(con, "MyOtherTopic1" + String.valueOf(shutdown));


        TopicSession session1 = con.createTopicSession(true, AMQSession.AUTO_ACKNOWLEDGE);
        TopicSubscriber sub = session1.createDurableSubscriber(topic, "subscription0");
        TopicPublisher publisher = session1.createPublisher(null);


        con.start();


        publisher.publish(topic, session1.createTextMessage("hello"));
        session1.commit();
        TextMessage m = (TextMessage) sub.receive(2000);
        assertNotNull(m);
        session1.commit();


        if (shutdown)
        {
            session1.close();
            con.close();
            con =  (AMQConnection) getConnection("guest", "guest");
            con.start();
            session1 = con.createTopicSession(true, AMQSession.NO_ACKNOWLEDGE);
            publisher = session1.createPublisher(null);
        }
        sub.close();
        TopicSubscriber sub2 = session1.createDurableSubscriber(topic2, "subscription0");
        publisher.publish(topic, session1.createTextMessage("hello"));
        session1.commit();
        if (!shutdown)
        {
            m = (TextMessage) sub2.receive(2000);
            assertNull(m);
            session1.commit();
        }
        publisher.publish(topic2, session1.createTextMessage("goodbye"));
        session1.commit();
        m = (TextMessage) sub2.receive(2000);
        assertNotNull(m);
        assertEquals("goodbye", m.getText());
        session1.unsubscribe("subscription0");

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