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From andrew.mar...@uk.bnpparibas.com
Subject Re: JMSPriority and activeMQ
Date Tue, 27 Jul 2010 06:01:40 GMT
Yes, I reckon they should be int. Maybe setPriority should throw an 
exception if the input priority is out of range.

Regards,

Andrew Marlow




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clark.obrien@ttmsolutions.com
26/07/2010 17:40
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Re: JMSPriority and activeMQ







Andrew,
What is your suggestion that would work in the unsigned java world. I 
guess
the getPriority and setPriority are required by the spec to be int 
primitive
types.

Clark 

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


andrew.marlow wrote:
> 
> Hello,
> 
> It looks to me like ActiveMQ uses a byte to hold the message priority 
and 
> treats it as a signed integer. This makes the range -127 to +128. 
> According to page 34, section 3.4.10 of the JMS spec, priorities are in 
> the range 0 to 9. 
> 
> I have also found that IBMs MQSeries, which offers a JMS facility for 
C++ 
> users called XMS, allows message priorities in the range 0 to MAXINT.
> 
> The IBM product may be doing what it does because the underlying queue 
> mechanism has supported message priorities for some time and just doesnt 

> restrict them when coming via the JMS-like interface. But it seems to me 

> that ActiveMQ should. After all, it should follow the spec....
> 
> Regards,
> 
> Andrew Marlow
> 
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