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From Gordon Sim <g...@redhat.com>
Subject Re: "not" values in the headers exchange
Date Mon, 05 Sep 2011 07:50:58 GMT
On 09/04/2011 03:04 PM, fadams wrote:
> Hi,
> I'm curious if there is an ability to do "not" selectors via the headers
> exchange.

No, there isn't.

> so for example I might have two headers lets say type and subtype and it
> might be nice to select messages of type=fruit and subttype != peach so I
> can select all fruit except peaches. That's clearly a lot less convoluted
> (and error prone) than having an x-match all containing all the positive
> matches (and also if I add a new fruit I'd have to update the binding, but
> with the not selector I wouldn't).
>
> If it's not possible with the headers exchange could someone suggest some
> clever trickery to do that type of thing.

You could use the xml exchange; its a non-standard exchange that 
supports x-query based bindings that allow more sophisticated matching 
logic on application defined properties. It doesn't actually require you 
to send xml content.

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