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From Toralf Lund <toralf.l...@pgs.com>
Subject Specify key for LVQ?
Date Mon, 15 Aug 2011 11:34:29 GMT
I'm looking into the LVQ behaviour for QPid messaging setup. The typical 
example usage example (in C++) for this is something like:

    Message request;

    std::string key;
    request.getHeaders().setString(key, "key1");

That's all very well for some uses, I suppose, but where does the key 
actually come from? I can't find a way to set it via the C++ APIs, or by 
using something like qpid-config. So, is the "LVQ key" some magic 
property set internally? Isn't it supposed to be possible request "LVQ 
behaviour" for any key according to AMQP?

I think (in my application) I would prefer not having the sender set an 
"LVQ key" as such, but instead just set one or more general "id" 
properties, and let messaging config external to the application decide 
if a queue is an LVQ, and if it is, which property to use when deciding 
if messages are to be considered the same.

- Toralf

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