Syncrhonous and Asynchronous calls

[Morgan Duchène]

Hi,

I have a basic architecture question about the development model with 
Cougaar.
* Developments with Cougaar and plugins are based on blackboard 
registrations to events (objects, tasks, ...). So it is an asynchronous 
model where plugins are awaken when new events they are interested in 
are published.
* Cougaar also offers to interact with "the outside world" with servlets 
to receive commands for example. When a browser sends a requests for a 
page to and http server, it's a synchronous call as it waits for the answer.

So my simple question it this one: if we don't have the data available 
on the blackboard as the servlet is sending the search parameters 
(database, files, ...), what is the best way to have plugins give the 
answer to the servlet?

Thanks,
Morgan