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From MqUser <pm...@sonic.net>
Subject Re: Topics and subtopics - Newbie
Date Mon, 15 Jan 2007 22:35:52 GMT



But I thought that the publish subscribe system was to enable one to
subscribe to what they wanted and not other messages, thus necessitating
querrying.

Where does the message bus concept fit in then?

And SQL 98?







James.Strachan wrote:
> 
> Messaging/MOM and JMS isn't designed for querying; thats a database
> type thing - its designed for streaming. You can use selectors to
> filter streams (but this is different to querying)
> 
> However you can browse pending queues using QueueBrowsers in JMS but
> this is quite different to querying.
> 
> On 1/13/07, MqUser <pmres@sonic.net> wrote:
>>
>> Let us say a producer is a logger logging status information.
>> I want one topic to be errors and the other to be success.
>>
>> Does not indicate that with:
>> XYZproject.Success
>> XYZproject.Errors
>> or
>>
>> XYZproject/Success
>> XYZproject/Errors
>>
>> and how does one querry this.
>>
>> In xmlblaster the try can be queried via xpath for instance.
>> I have only seen JNDI examples.
>>
>>
>> --
>> View this message in context:
>> http://www.nabble.com/Topics-and-subtopics---Newbie-tf2971683.html#a8315511
>> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>>
>>
> 
> 
> -- 
> 
> James
> -------
> http://radio.weblogs.com/0112098/
> 
> 

-- 
View this message in context: http://www.nabble.com/Topics-and-subtopics---Newbie-tf2971683.html#a8380794
Sent from the ActiveMQ - User mailing list archive at Nabble.com.


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