Re: [aspectj-users] Passing in parameters from runtime code

[Adrian Powell <apowell@xxxxxxxxxx>]

In my case, I know that all interesting
methods are called from a ControllerCommand which has session and other
logon information.  So I declare a pointcut as:

pointcut perfExec(ControllerCommandImpl
controller):
        cflowbelow(execution(*
ControllerCommandImpl+.performExecute()))
        &&
this(controller) // ...

and log the session along with other
statements as:

before(ControllerCommandImpl controller)
: perfExecExec(controller) {
        String
sessionId = "";
        try
{
         
      sessionId = controller.getCommandContext().getSessionContext().getUniqueSessionTag();
         
        }
catch( Exception e ) {
         
      // ignore
        }
        //
...

If you expect to have some session information
such as the authentication objects, likely you will have some central choke-points
like this too.

cheers,
-adrian.
--
Adrian Powell
Centre for IBM e-Business Innovation :: Vancouver
apowell@xxxxxxxxxx / 604-297-3194

"Seaman, Sloan" <Sloan.Seaman@xxxxxxxxxxx>
Sent by: aspectj-users-admin@xxxxxxxxxxx

09/03/2004 10:54 AM

Please respond to
aspectj-users

To	"'aspectj-users@xxxxxxxxxxx'" <aspectj-users@xxxxxxxxxxx>
cc
Subject	[aspectj-users] Passing in parameters from runtime code

How do I get a variable from the running
code into some Aspect? 

What I mean to say is that I have an web app that for each user logged
in, there is a javax.security.auth.Subject object for.  I'm using
AspectJ to record all SQL statements that end up getting executed but how
do I tie them to the Subject?

I.E. How do I get the .aj code to have an instance of the Subject object?  I can't put it in a static place in memory because since it is a web app, I have to worry about threading issues.

Anyone know how I can pull this off?

Thanks!

--
Sloan