Re: [aspectj-users] Aspect J classloader agent

[Mathieu LEMAIRE <mlemaire@xxxxxxx>]

thanks a lot for your answers.

I forgot to mention I was using the JUnit testcase framework to trigger 
a series of testcases.
Each testcase would use the same classes but those classes would have to 
be diffrently instrumented from one testcase to the other.

Mathew :
In fact I tried first to enable load time weaving replacing the java 
system class loader by AJ's WeavingURLClassloader... but I could not 
make it work, JUnit apparently using its own -reloadable- classloaders. 
Therefore your second solution is to complex for me :)
However I think I will be able to do with your first solution

Thanks !

Mathieu

> Mathieu,
>
> I'm not quite sure what your requirement is. Is it that you have a series
> of tests each one to drive the same classes/application but with a
> different set of aspects? If so there are 2 ways to achieve this: 1) use a
> cflow pointcut to ensure each aspect is only active for the appropriate
> test (see section 11.4.2 in Eclipse AspectJ), or 2) load each testcase with
> a new classloader giving you the opportunity to define a new set of
> aspects. The latter is "purer" but more complex but is something we are
> exploring for the AspectJ test suite so one day you may get it for free!
>
> Matthew Webster
> AOSD Project
> Java Technology Centre, MP146
> IBM Hursley Park, Winchester,  SO21 2JN, England
> Telephone: +44 196 2816139 (external) 246139 (internal)
> Email: Matthew Webster/UK/IBM @ IBMGB, matthew_webster@xxxxxxxxxx
> http://w3.hursley.ibm.com/~websterm/
>
> Mathieu LEMAIRE <mlemaire@xxxxxxx>@eclipse.org on 03/10/2005 08:44:56
>
> Please respond to aspectj-users@xxxxxxxxxxx
>
> Sent by:    aspectj-users-bounces@xxxxxxxxxxx
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>
> To:    ML aspectj <aspectj-users@xxxxxxxxxxx>
> cc:
> Subject:    [aspectj-users] Aspect J classloader agent
>
>
> Hie,
>
> I'm pretty newbie in AspectJ and haven't begun coding yet.
> I want to use aspects to profile our program's performances using
> aspectJ's classloading-time feature. It seems really interesting because
> we would not have to recompile everithing each time, thus making aspects
> "hot plugged"...
>
> However, using JUnit to trigger a series of tests, we only have one
> start of the JVM ; therefore we cannot change the set of aspects from
> one test to the other..
> Is there anything I can do at runtime to change my aspects configuration
> and redo classloading ?
>
> Thank you for any advice ;)
>
> --
> Mathieu
>
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