Wild Cards on Topic Exchange

[snr202 <ra...@hotmail.com>]

Hi All,

We are using Topic exchange to send/receive messages in QPid and have run
into some questions on how the wild card works.

1.  Can a sender send to wild card topics?  As an example,  we want the
sender to send to usa.*

2.  Can a receiver subject listen on wild card topics such as usa.n*?   We
can get the receiver to listen to usa.* but not usa.n*  (Match all topics
that have usa.n).

Thanks in advance,

Ravin

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RE: Wild Cards on Topic Exchange

[Steve Huston <sh...@riverace.com>]

Hi Ravin,

> We are using Topic exchange to send/receive messages in QPid 
> and have run into some questions on how the wild card works.
> 
> 1.  Can a sender send to wild card topics?  As an example,  
> we want the sender to send to usa.*

No - wild cards are for subscribing to the topics, not sending.

> 2.  Can a receiver subject listen on wild card topics such as 
> usa.n*?   We
> can get the receiver to listen to usa.* but not usa.n*  
> (Match all topics that have usa.n).

No - the wild cards work on dot-delimited tokens. Please see the
programming guide for more info:
http://qpid.apache.org/books/0.10/Programming-In-Apache-Qpid/html/ch02s0
4.html#id2735610

-Steve

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Steve Huston, Riverace Corporation
Total Lifecycle Support for Your Networked Applications
http://www.riverace.com


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