Examples of org.hornetq.api.core.client.ClientConsumer.receiveImmediate()

Class org.hornetq.api.core.client.ClientConsumer

Examples of org.hornetq.api.core.client.ClientConsumer.receiveImmediate()

org.hornetq.api.core.client.ClientConsumer.receiveImmediate()
Receives a message from a queue. This call will force a network trip to HornetQ server to ensure that there are no messages in the queue which can be delivered to this consumer.
This call will never wait indefinitely for a message, it will return {@code null} if nomessages are available for this consumer.
Note however that there is a performance cost as an additional network trip to the server may required to check the queue status.
Calling this method on a closed consumer will throw a HornetQException. @return a message or {@code null} if there are no messages in the queue for this consumer @throws HornetQException if an exception occurs while waiting to receive a message


      log.info("sending second msg");


      producer.send(message);


      ClientMessage received = consumer.receiveImmediate();


      assertNotNull(received);


      assertEquals("giraffe", received.getStringProperty("animal"));

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      assertNotNull(received);


      assertEquals("giraffe", received.getStringProperty("animal"));


      assertNull(consumer.receiveImmediate());
      
      session.close();
      
      sf.close();

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         message.putStringProperty("animal", "hippo");


         producer.send(message);
      }


      assertNull(consumer.receiveImmediate());


      for (int i = 0; i < QueueImpl.MAX_DELIVERIES_IN_LOOP * 2; i++)
      {
         ClientMessage message = session.createMessage(false);

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         producer.send(message);
      }


      for (int i = 0; i < QueueImpl.MAX_DELIVERIES_IN_LOOP * 2; i++)
      {
         ClientMessage received = consumer.receiveImmediate();


         assertNotNull(received);


         assertEquals("giraffe", received.getStringProperty("animal"));
      }

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         assertNotNull(received);


         assertEquals("giraffe", received.getStringProperty("animal"));
      }
      
      assertNull(consumer.receiveImmediate());


      session.close();
      
      sf.close();

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      assertNotNull(received);
      
      assertEquals("giraffe", received.getStringProperty("animal"));
      
      assertNull(consumer1.receiveImmediate());
      assertNull(consumer2.receiveImmediate());
      
      //Create and consume another message that matches the first consumer's filter
      message = session.createMessage(false);


      message.putStringProperty("animal", "giraffe");

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      assertNotNull(received);
      
      assertEquals("giraffe", received.getStringProperty("animal"));
      
      assertNull(consumer1.receiveImmediate());
      assertNull(consumer2.receiveImmediate());
      
      //Create and consume a message that matches the second consumer's filter
      
      message = session.createMessage(false);

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      assertNotNull(received);
      
      assertEquals("elephant", received.getStringProperty("animal"));
      
      assertNull(consumer1.receiveImmediate());
      assertNull(consumer2.receiveImmediate());
      
      //Create and consume another message that matches the second consumer's filter
      
      message = session.createMessage(false);

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      assertNotNull(received);
      
      assertEquals("elephant", received.getStringProperty("animal"));
      
      assertNull(consumer1.receiveImmediate());
      assertNull(consumer2.receiveImmediate());
      
      session.close();
      
      sf.close();

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      ClientConsumer consumer = session.createConsumer(FailoverTestBase.ADDRESS);


      session.start();


      ClientMessage message = consumer.receiveImmediate();


      Assert.assertNull(message);


      session.close();

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