Examples of org.hornetq.api.core.client.ClientConsumer

org.hornetq.api.core.client.ClientConsumer
A ClientConsumer receives messages from HornetQ queues.
Messages can be consumed synchronously by using the receive() methods which will block until a message is received (or a timeout expires) or asynchronously by setting a {@link MessageHandler}.
These 2 types of consumption are exclusive: a ClientConsumer with a MessageHandler set will throw HornetQException if its receive() methods are called. @author Tim Fox @author Clebert Suconic @author Andy Taylor @see ClientSession#createConsumer(String)

      }


      // this is just to guarantee a round trip and avoid in transit messages, so they are all accounted for
      session.commit();


      ClientConsumer consumer = session.createConsumer(queue, SimpleString.toSimpleString("nonExistentProperty like \'%Temp/88\'"));
      
      session.start();
      
      assertNull(consumer.receiveImmediate());




      QueueControl queueControl = createManagementControl(address, queue);
      Assert.assertEquals(110, queueControl.getMessageCount());


      
      Assert.assertEquals(0, queueControl.countMessages("nonExistentProperty like \'%Temp/88\'"));


      Assert.assertEquals(100, queueControl.countMessages(key + "=\'" + matchingValue + "\'"));
      Assert.assertEquals(10, queueControl.countMessages(key + " = \'" + nonMatchingValue + "\'"));
      
      consumer.close();
      
      session.deleteQueue(queue);
   }

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      int expiredMessagesCount = queueControl.expireMessages(key + " =" + matchingValue);
      Assert.assertEquals(1, expiredMessagesCount);
      Assert.assertEquals(1, queueControl.getMessageCount());


      // consume the unmatched message from queue
      ClientConsumer consumer = session.createConsumer(queue);
      ClientMessage m = consumer.receive(500);
      Assert.assertNotNull(m);
      Assert.assertEquals(unmatchingValue, m.getObjectProperty(key));


      m.acknowledge();


      // check there is no other message to consume:
      m = consumer.receiveImmediate();
      Assert.assertNull(m);


      consumer.close();
      session.deleteQueue(queue);
      session.close();
   }

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      long messageID = (Long)messages[0].get("messageID");


      boolean priorityChanged = queueControl.changeMessagePriority(messageID, newPriority);
      Assert.assertTrue(priorityChanged);


      ClientConsumer consumer = session.createConsumer(queue);
      ClientMessage m = consumer.receive(500);
      Assert.assertNotNull(m);
      Assert.assertEquals(newPriority, m.getPriority());


      consumer.close();
      session.deleteQueue(queue);
   }

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      }
      catch (Exception e)
      {
      }


      ClientConsumer consumer = session.createConsumer(queue);
      ClientMessage m = consumer.receive(500);
      Assert.assertNotNull(m);
      Assert.assertTrue(invalidPriority != m.getPriority());


      consumer.close();
      session.deleteQueue(queue);
   }

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         prod1.send(msg);
      }


      session.commit();


      ClientConsumer consumer = session.createConsumer("q1", true);
      session.start();


      assertNotNull(consumer.receive(5000));
      consumer.close();


      QueueControl q1Control = ManagementControlHelper.createQueueControl(new SimpleString("q1"),
                                                                          new SimpleString("q1"),
                                                                          mbeanServer);


      QueueControl q2Control = ManagementControlHelper.createQueueControl(new SimpleString("q2"),
                                                                          new SimpleString("q2"),
                                                                          mbeanServer);


      assertEquals(10, q1Control.moveMessages(null, "q2"));


      consumer = session.createConsumer("q2", true);


      assertNotNull(consumer.receive(500));


      consumer.close();


      q2Control.moveMessages(null, "q1", false);


      session.start();
      consumer = session.createConsumer("q1");


      for (int i = 0; i < 10; i++)
      {
         ClientMessage msg = consumer.receive(5000);
         System.out.println("msg = " + msg);
         assertNotNull(msg);
         msg.acknowledge();
      }


      consumer.close();


      session.deleteQueue("q1");


      session.deleteQueue("q2");

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         prod1.send(msg);
      }


      session.commit();


      ClientConsumer consumer = session.createConsumer("q1", true);
      session.start();


      assertNotNull(consumer.receive(5000));
      consumer.close();


      QueueControl q1Control = ManagementControlHelper.createQueueControl(new SimpleString("q1"),
                                                                          new SimpleString("q1"),
                                                                          mbeanServer);


      QueueControl q2Control = ManagementControlHelper.createQueueControl(new SimpleString("q2"),
                                                                          new SimpleString("q2"),
                                                                          mbeanServer);


      assertEquals(NUMBER_OF_MSGS, q1Control.moveMessages(null, "q2"));


      long messageIDs[] = new long[NUMBER_OF_MSGS];


      consumer = session.createConsumer("q2", true);


      for (int i = 0 ; i < NUMBER_OF_MSGS; i++)
      {
         ClientMessage msg = consumer.receive(5000);
         assertNotNull(msg);
         messageIDs[i] = msg.getMessageID();
      }


      assertNull(consumer.receiveImmediate());


      consumer.close();


      for (int i = 0 ; i < NUMBER_OF_MSGS; i++)
      {
         q2Control.moveMessage(messageIDs[i], "q1");
      }




      session.start();
      consumer = session.createConsumer("q1");


      for (int i = 0; i < NUMBER_OF_MSGS; i++)
      {
         ClientMessage msg = consumer.receive(5000);
         System.out.println("msg = " + msg);
         assertNotNull(msg);
         msg.acknowledge();
      }


      consumer.close();


      session.deleteQueue("q1");


      session.deleteQueue("q2");

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         session = sf.createSession(true, true, 0);


         session.start();


         ClientConsumer consumer = session.createConsumer(ADDRESS);


         for (int i = 0; i < numberOfMessages / 2; i++)
         {
            ClientMessage message = consumer.receive(5000);
            assertNotNull(message);
            assertEquals(i, message.getIntProperty("id").intValue());


            if (i < 100)
            {
               // Do not consume the last one so we could restart
               message.acknowledge();
            }
         }


         session.close();
         
         session = null;


         sf.close();
         sf = locator.createSessionFactory();


         locator = createInVMNonHALocator();


         session = sf.createSession(true, true, 0);


         session.start();


         consumer = session.createConsumer(ADDRESS);


         for (int i = 100; i < numberOfMessages; i++)
         {
            ClientMessage message = consumer.receive(5000);
            assertNotNull(message);
            assertEquals(i, message.getIntProperty("id").intValue());
            message.acknowledge();
         }

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               {
                  ServerLocator sl = createInVMNonHALocator();
                  ClientSessionFactory sf = sl.createSessionFactory();
                  ClientSession sess = sf.createSession(true, true, 0);
                  sess.start();
                  ClientConsumer cons = sess.createConsumer(ADDRESS);
                  for (int i = 0; i < numberOfMessages; i++)
                  {
                     ClientMessage msg = cons.receive(5000);
                     assertNotNull(msg);
                     assertEquals(i, msg.getIntProperty("id").intValue());
                     msg.acknowledge();
                  }


                  assertNull(cons.receiveImmediate());
                  sess.close();
                  sl.close();
               }
               catch (Throwable e)
               {

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               {
                  ServerLocator sl = createInVMNonHALocator();
                  ClientSessionFactory sf = sl.createSessionFactory();
                  ClientSession sess = sf.createSession(true, true, 0);
                  sess.start();
                  ClientConsumer cons = sess.createConsumer(ADDRESS);
                  for (int i = 0; i < 100; i++)
                  {
                     ClientMessage msg = cons.receive(5000);
                     assertNotNull(msg);
                     assertEquals(i, msg.getIntProperty("id").intValue());
                     msg.acknowledge();
                  }
                  sess.close();

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         session = sf.createSession(false, false, 0);


         session.start();


         ClientConsumer consumer = session.createConsumer(ADDRESS);


         for (int i = 0; i < numberOfMessages / 2; i++)
         {
            ClientMessage message = consumer.receive(5000);
            assertNotNull(message);
            assertEquals(i, message.getIntProperty("id").intValue());
            message.acknowledge();
         }


         session.rollback();


         session.close();


         session = sf.createSession(false, false, 0);


         session.start();


         consumer = session.createConsumer(ADDRESS);


         for (int i = 0; i < numberOfMessages; i++)
         {
            ClientMessage message = consumer.receive(5000);
            assertNotNull(message);
            assertEquals(i, message.getIntProperty("id").intValue());
            message.acknowledge();
         }

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