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From Banana Man <alex.h...@btinternet.com>
Subject Re: Message Groups
Date Mon, 07 May 2007 23:03:10 GMT

Thanks for your help.

I was thinking that the interceptors might be a good idea. I like the idea
of the 
responsibility being in the broker because, you could argue, it is the
broker and 
not the client that should concern itself with HA and load balancing etc.

The Transformer on the Producer sounds quite clean but it still assumes the
client
takes responsibilty.

 I really like the idea of Camel. I was reading about the EIP's the other
day. I'm afraid 
I probably haven't understood its purpose properly. I thought it was a
framework
of recommended patterns which Active actually implements. Are you saying
that 
I can specifically get Active to use some of those patterns? Sorry - a bit
thick here.

Thanks again.


James.Strachan wrote:
> 
> On 5/7/07, Banana Man <alex.hyde@btinternet.com> wrote:
>>
>> Hi All,
>>
>> Is it possible to configure the broker to dynamically attach a message
>> group
>> to an incoming message based on the content of that message (e.g. an
>> xpath
>> or selector)?
> 
> Interesting idea :)
> 
> You could use a Broker Interceptor to do such a thing...
> http://activemq.apache.org/interceptors.html
> 
> though that is a bit of a performance overhead; the broker often
> doesn't have to de-marshal the message payload; forcing the de-marshal
> will definitely slow the broker down & burn more CPU. A better
> approach would be to add this as a transformer on the producer....
> http://activemq.apache.org/message-transformation.html
> 
> Or yet another option is to use Camel to consume from one queue,
> transforming the message to add the message group, then publish to
> another destination...
> http://activemq.apache.org/camel/enterprise-integration-patterns.html
> -- 
> James
> -------
> http://macstrac.blogspot.com/
> 
> 

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