Examples of javax.jms.Session

javax.jms.Session
@version $Rev: 46019 $ $Date: 2004-09-14 03:56:06 -0600 (Tue, 14 Sep 2004) $

      try
      {
         
         conn = cf.createConnection();
   
         Session producerSess = conn.createSession(false, Session.CLIENT_ACKNOWLEDGE);
   
         boolean thrown = false;
         try
         {
            producerSess.rollback();
         }
         catch (javax.jms.IllegalStateException e)
         {
            thrown = true;
         }

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      try
      {
         
         conn = cf.createConnection();
   
         Session producerSess = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageProducer producer = producerSess.createProducer(queue);
   
         Session consumerSess = conn.createSession(true, Session.CLIENT_ACKNOWLEDGE);
         MessageConsumer consumer = consumerSess.createConsumer(queue);
         conn.start();
   
         final int NUM_MESSAGES = 10;
   
         //Send some messages
         for (int i = 0; i < NUM_MESSAGES; i++)
         {
            Message m = producerSess.createMessage();
            producer.send(m);
         }
   
         log.trace("Sent messages");
   
         int count = 0;
         while (true)
         {
            Message m = consumer.receive(500);
            if (m == null) break;
            count++;
         }
   
         assertEquals(NUM_MESSAGES, count);
   
         consumerSess.rollback();
   
         conn.stop();
         consumer.close();
   
         conn.close();
   
         conn = cf.createConnection();
   
         consumerSess = conn.createSession(true, Session.CLIENT_ACKNOWLEDGE);
         consumer = consumerSess.createConsumer(queue);
         conn.start();
   
         count = 0;
         while (true)
         {

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      try
      {
         
         conn = cf.createConnection();
   
         Session producerSess = conn.createSession(true, Session.AUTO_ACKNOWLEDGE);
         MessageProducer producer = producerSess.createProducer(queue);
   
         Session consumerSess = conn.createSession(false, Session.CLIENT_ACKNOWLEDGE);
         MessageConsumer consumer = consumerSess.createConsumer(queue);
         conn.start();
   
         final int NUM_MESSAGES = 10;
         final int NUM_TX = 10;

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         return;
      }


      // send a bunch of messages and let them accumulate in the queue
      Connection conn = cf.createConnection();
      Session session = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
      MessageProducer prod = session.createProducer(queue);


      int messageCount = 20;


      for(int i = 0; i < messageCount; i++)
      {
         Message m = session.createTextMessage("krakatau" + i);
         prod.send(m);
      }


      conn.close();


      // make sure messages made it to the queue
      Integer count = (Integer)ServerManagement.getAttribute(queueObjectName, "MessageCount");
      assertEquals(messageCount, count.intValue());




      conn = cf.createConnection();
      session = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
      MessageConsumer cons = session.createConsumer(queue);


      conn.start();


      // messages will be sent in bulk from server side, on the next HTTP client listner poll

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   protected void simpleSendReceive(ConnectionFactory cf, Destination dest) throws Exception
   {
      Connection conn = cf.createConnection();
      
      Session sess = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
      
      MessageProducer prod = sess.createProducer(dest);
      
      MessageConsumer cons = sess.createConsumer(dest);
      
      conn.start();
      
      TextMessage tm = sess.createTextMessage("ref test");
      
      prod.send(tm);
      
      tm = (TextMessage)cons.receive(1000);

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   public void testSendReceiveMessage() throws Exception
   {
      Connection conn = cf.createConnection();
      
      Session sess = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
      
      MessageProducer prod = sess.createProducer(queue);
      
      //Make persistent to make sure message gets serialized
      prod.setDeliveryMode(DeliveryMode.PERSISTENT);
      
      MessageConsumer cons = sess.createConsumer(queue);
      
      TestMessage tm = new TestMessage(123, false);
      
      ObjectMessage om = sess.createObjectMessage();
      
      om.setObject(tm);
      
      conn.start();

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      public void run()
      {
         int commitCounter = 0;
         try
         {
            Session session = conn.createSession(true, Session.SESSION_TRANSACTED);
            MessageConsumer consumer = session.createConsumer((Destination)queue);


            int lastCount = messageCount;
            while (true)
            {
               TextMessage message = (TextMessage) consumer.receive(5000);
               if (message == null)
               {
                  break;
               }
               log.debug("read message " + message.getText());


               // alternating commits and rollbacks
               if ( (commitCounter++) % 2 == 0)
               {
                  messagesRead += (messageCount - lastCount);
                  lastCount = messageCount;
                  log.debug("commit");
                  session.commit();
               }
               else
               {
                  lastCount = messageCount;
                  log.debug("rollback");
                  session.rollback();
               }


               messageCount++;


               if (messageCount %7 == 0)
               {
                  session.close();


                  session = conn.createSession(true, Session.SESSION_TRANSACTED);
                  consumer = session.createConsumer((Destination)queue);
               }


               if (messageCount % 50 == 0)
               {
                  log.info("Reader " + index + " read " + messageCount + " messages");
               }
            }


            messagesRead += (messageCount - lastCount);


            session.commit();
            consumer.close();
            session.close();
         }
         catch (Exception e)
         {
            e.printStackTrace();
            exceptions.add(e);

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         for (int i = 0; i < 10; i++)
         {
            try
            {
               int lastMessage = messageCount;
               Session sess = conn.createSession(true, Session.SESSION_TRANSACTED);
               MessageProducer producer = sess.createProducer((Destination)queue);


               for (int j = 0; j < 20; j++)
               {
                  producer.send(sess.createTextMessage("Message " + i + ", " + j));


                  if (j % 2 == 0)
                  {
                     log.debug("commit");
                     messagesProduced += (messageCount - lastMessage);
                     lastMessage = messageCount;
                     
                     sess.commit();
                  }
                  else
                  {
                     log.debug("rollback");
                     lastMessage = messageCount;
                     sess.rollback();
                  }
                  messageCount ++;


               }


               messagesProduced += ((messageCount) - lastMessage);
               sess.commit();
               sess.close();


               if (messageCount % 50 == 0)
               {
                  log.info("Producer " + index + " sent " + messageCount + " messages");
               }

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      Queue queue = (Queue)initialContext.lookup("/queue/Queue");
      
      Connection conn = cf.createConnection();


      Session sess = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);


      MessageProducer prod = sess.createProducer(queue);


      prod.setDeliveryMode(DeliveryMode.NON_PERSISTENT);


      final int NUM_MESSAGES = 1000;
      
      //send some messages
      
      conn.start();
      MessageConsumer cons = sess.createConsumer(queue);


      produceMessages(sess, prod, 100, cons);
      
      JVMTIInterface jvmti = new JVMTIInterface();
      Map inventory1=jvmti.produceInventory();

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      Queue queue = (Queue)initialContext.lookup("/queue/Queue");
      
      Connection conn = cf.createConnection();


      Session sess = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);


      MessageProducer prod = sess.createProducer(queue);


      prod.setDeliveryMode(DeliveryMode.NON_PERSISTENT);


      final int NUM_MESSAGES = 100;
      
      //send some messages
      ArrayList payLoad = new ArrayList();
      for (int i=0;i<100;i++)
      {
         payLoad.add("" + i);
      }
      conn.start();
      MessageConsumer cons1 = sess.createConsumer(queue,"target='1'");
      MessageConsumer cons2 = sess.createConsumer(queue,"target='2'");


      produceMessages(sess, prod, 30, cons1,cons2,payLoad);
      
      JVMTIInterface jvmti = new JVMTIInterface();
      Map inventory1=jvmti.produceInventory();

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