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From cobrien <clark.obr...@ttmsolutions.com>
Subject Re: ActiveMQ mixes up order of messages while receiving them from Camel
Date Mon, 28 Jun 2010 17:15:41 GMT

Hi,
Can you describe a little more your Queue topology and configuration-
perhaps even share your config file(s). Not all queue topologies are order
preserving!
-clark

Clark 

www.ttmsolutions.com 
ActiveMQ reference guide at 
http://bit.ly/AMQRefGuide


sonicBasher wrote:
> 
> At the end of my camel route I have a following class which I use to put
> messages in ActiveMQ: 
> 
> public class MessageProducer { 
> 
>     private ProducerTemplate template = null; 
> 
>     public MessageProducer(ProducerTemplate template) { 
>         this.template = template; 
>     } 
> 
>     public void produce(@Body List listOfEttexObj) { 
>         System.out.println("Entered produce() method"); 
>         XStream x = new XStream(); 
>         List<EttexObject> listOfEttexObjects =
> (List<EttexObject>)listOfEttexObj; 
>         for (int q = 0; q < listOfEttexObjects.size(); q++) { 
>             EttexObject eo = listOfEttexObjects.get(q); 
>             template.sendBody("jms:" + eo.getAccountName() +
> "_2",x.toXML(eo)); 
>             System.out.println("Sent type: " + eo.getMessage().getType()); 
>         } 
>     } 
> } 
> 
> 
> *XStream is just a library for converting objects to XML, has nothing to
> do with anything
> **EttexObject is my POJO class 
> 
> Now, I noticed that whenever I send objects (from the list passed as an
> argument) to the queues, which I implicitly create using ProducerTemplate,
> most of the time the order of delivered messages is correct, but there's
> always one queue, which gets the mixed up messages. I can't really figure
> out why. I tried to use the requestBody method, instead of sendBody, to no
> avail. I also double checked the lists that come in - the order of objects
> inside them is fine. Honestly I'm kind of stuck here. Will be grateful for
> any tips. 
> 
> regards 
> 
> p.s. Can synchronous/asynchronous ActiveMQ mode have anything to do with
> my problem? 
> 

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