As Antii writes, you can throw an exception to stop execution.
If you then create your own unchecked exception e.g.
SystemUnavailableException and throw this, you can create a top level
exception handler (in the web layer if on web) that tells your user
to try again later, or something like that.
On Jun 13, 2007, at 10:47 AM, <[EMAIL PROTECTED]>
<[EMAIL PROTECTED]> wrote:
Hi
Thnx for the clarification.
Hermod
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Antti Karanta
Sent: Wednesday, June 13, 2007 10:34 AM
To: [email protected]
Subject: RE: [aspectj-users] Challenge
Using a before advice won't do it as far as I can tell. The
only way to change the return value (say return null f.ex.),
or throw something like a ResourceUnavailable exception would
be in a around advice. Using a before advice won't stop the
actual call (or will it?).
You can throw exceptions from before advice, and doing so naturally
stops the actual call from happening.
If you want to change the return value or not make the actual call
(e.g. get the value from cache), you have to use around advice.
-Antti-
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