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RE: [aspectj-users] Custom JoinPoints

 
I was intending to do more research before I responded to any of the
other emails, but haven't had a chance to do that.

Anyways, My requirement was,

If I could have a custom JoinPoint that can do special translation for
some specific method arguments in its current context.

The reason being, In a FlightRecorder utility, if I were to cache the
JoinPoint for dumping the data to a log file at a later time and one of
the method arguments had a huge memory footprint, I wouldn't want to
cache that particular argument and hold on to the reference, instead I
would convert that parameter to a brief String in the JoinPoint and
cache the JoinPoint. My Custom JoinPoint would detect such arguments and
immediately convert them to a brief string and not cache the object
argument ( Not sure what can of worms that this would open, but it
should be doable right?)

Now, may be there are other ways of doing this without derived/Custom
JoinPoint, like the user object proposed in the bug for AspectJ
https://bugs.eclipse.org/bugs/show_bug.cgi?id=89009. This would mean
creation of 2 objects for logging ( one is the JoinPoint that would be
created and other is the userObject to be set in the JoinPoint in
addition to some reflection calls). I think the hit would be limited to
creation of just 1 Object if the userObject was part of StaticJoinPoint
( which was also suggested in the bug comments).
Or 
another idea that was brought up independent of AspectJ was using weak
references which again is Object creation ( might end up doing this if
nothing else works).

Hope this discourse above is clear enough to explain my requirements.

Savita

 
-----Original Message-----
From: aspectj-users-bounces@xxxxxxxxxxx
[mailto:aspectj-users-bounces@xxxxxxxxxxx] On Behalf Of Ron Bodkin
Sent: Friday, September 29, 2006 10:42 AM
To: aspectj-users@xxxxxxxxxxx
Subject: RE: [aspectj-users] Custom JoinPoints

So Savita,

Inquiring minds want to know: what behavioral modification of a join
point
are you seeking to achieve?

-----Original Message-----
From: aspectj-users-bounces@xxxxxxxxxxx
[mailto:aspectj-users-bounces@xxxxxxxxxxx] On Behalf Of Chandan, Savita
Sent: Wednesday, September 27, 2006 11:38 PM
To: wes@xxxxxxxxxxxxxx; aspectj-users@xxxxxxxxxxx
Subject: RE: [aspectj-users] Custom JoinPoints

Of course you are right, I should be able to do add the functionality to
AspectJ, that is something that is under our control. I will also create
a case for letting users create custom JoinPoints in AspectJ. Iam sure
if Aspectwerkz allowed it and aspectbench allows it, there are already
compelling usecases for having done that in these products.

-----Original Message-----
From: aspectj-users-bounces@xxxxxxxxxxx
[mailto:aspectj-users-bounces@xxxxxxxxxxx] On Behalf Of Wes
Sent: Wednesday, September 27, 2006 9:01 PM
To: aspectj-users@xxxxxxxxxxx
Subject: Re: [aspectj-users] Custom JoinPoints

AspectJ is open-source, so you can write and use a different
implementation.
aspectjrt.jar combines the runtime and aspectj5rt projects.

Just make sure it's binary-compatible, and, for clarity's sake, rename
the 
jar as your internal version - e.g., "aspectjrt-tencor-1.1.jar"

If you want us to support new features, please submit a compelling
bug/use-case.

Thanks - 
Wes

http://www.eclipse.org/aspectj/doc/released/faq.html#q:buildingsource
http://dev.eclipse.org/bugs/enter_bug.cgi?product=AspectJ

> ------------Original Message------------
> From: "Chandan, Savita" <Savita.Chandan@xxxxxxxxxxxxxx>
> To: aspectj-users@xxxxxxxxxxx
> Date: Wed, Sep-27-2006 2:08 PM
> Subject: [aspectj-users] Custom JoinPoints
>
>  Hi
> 
> Does AspectJ allow inheriting from the JoinPoint class and creating a
> custom JoinPoint class?
> If it does how do I plug in the derived JoinPoint into AspectJ
> framework?
> 
> 
> Thanks,
> Savita
> _______________________________________________
> aspectj-users mailing list
> aspectj-users@xxxxxxxxxxx
> https://dev.eclipse.org/mailman/listinfo/aspectj-users
> 

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