Hi,
On 01/08/2011 10:59 AM, Dan Checkoway wrote:
> I'm generally a huge fan of annotation-driven stuff. Here's one example
> where my hands are tied, and I can't use annotations to do what I want to
> do. Let's say I have this:
>
> @Consume(uri="activmeq:queue:whatever?concurrentConsumers=10")
> public void onWhatever(String whatever) {
> ...
> }
>
> Now let's say I want the queue name ("stuff") and the # of
> concurrentConsumers to be configurable via a properties file. Up until now,
> I've resorted to setting up the route manually with stuff like:
>
> public class MyRouteBuilder extends RouteBuilder {
> @Value("${queueName}")
> String queueName;
> @Value("${concurrentConsumers}")
> int concurrentConsumers;
>
> public void configure() {
> from("activemq:queue:" + queueName + "?concurrentConsumers=" +
> concurrentConsumers)
> .to(myWhateverBean, "onWhatever");
> }
> }
>
> Can anybody suggest an alternative way of using "dynamic" URIs with
> annotation-based POJOs? I would love, for example, to be able to do
> something like this:
>
> @Consume(uri="activmeq:queue:${queueName}?concurrentConsumers=${concurrentConsumers}")
> public void onWhatever(String whatever) {
> ...
> }
Have you looked at the new property placeholder stuff in 2.3?
http://davsclaus.blogspot.com/2010/02/property-placeholder-galore-in-apache.html
I'm not sure if it works with annotations, but I've used it in a lot of
other places.
T
> Is this possible already and I just managed to miss it? :-) If not, is
> something like that in the works?
>
> Thanks,
> Dan
>
--
Regards / Med vennlig hilsen
Tarjei Huse
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