Re: [aspectj-users] adding and working with local variables using aspect

[Ashank <k_arvind_shankar@xxxxxxxxx>]

Hello Ulises,

Thanks for the pointers. Andy Clement responded to me saying that I could
add my variables in an 'around' aspect. I checked and they seem to behave
like local variables and are indeed seemingly thread safe. 
Do you think that this behavior is 'fragile'? Why do you say local variable
cross cutting is fragile in general?

-Arvind



Ulises Juárez Martínez wrote:
> 
> Hi Arvind,
> 
> AspectJ does not support crosscutting on local variables. Ther are only
> few
> works related to them. You can check these works:
> 
> Énfasis, a framework that uses bytecode instrumentation to implement a
> basic
> model for crosscutting on local variables. Currently, this framework has
> been complementing with a layer to provide a specific domain language for
> defining aspects related to local variables.
> http://portal.acm.org/citation.cfm?id=1363752
> 
> Bugdel, a tool based on AOP for debugging. This tool uses local variables.
> http://www.csg.is.titech.ac.jp/projects/bugdel/index-e.shtml
> 
> Fine-grained generic aspects, an approach that uses Logic Meta-Variables
> http://www.eecs.ucf.edu/FOAL/papers-2006/RhoKnieselAppeltauer.pdf
> 
> There are other approaches, but (from my knowledge) without
> implementations.
> Also note that local variable crosscutting is extremely fragile.
> 
> Best regards
> Ulises
> 
> 
> On Sun, Mar 14, 2010 at 4:19 AM, Arvind Krishnaswamy <
> k_arvind_shankar@xxxxxxxxx> wrote:
> 
>> Hello All,
>>
>> I am very new to AOP and aspectj. I have a little background in bytecode
>> instrumentation where I am freely able to intercept classes during load
>> time
>> and add some local variables to selected methods to maintain my
>> instrumentation state during method execution. I know there is something
>> called inter type declaration in aspectj using which I can declare
>> fields/methods of classes that I know the names of. I really need to be
>> able
>> to maintain some working state inside selected methods using local
>> variables
>> (so that I don't have to worry about threads overwriting each others'
>> state). Can I accomplish this using aspectJ and if so, how? This would be
>> very helpful. I searched the forums and the net and there is surprisingly
>> less discussion around this topic. Also, how can I add members to classes
>> if
>> I don't know their names in advance (while intercepting them during load
>> time). Please help. Thanks in advance
>>
>> -Arvind
>> ------------------------------
>> Your Mail works best with the New Yahoo Optimized IE8. Get it
>> NOW!<http://in.rd.yahoo.com/tagline_ie8_new/*http://downloads.yahoo.com/in/internetexplorer/>
>> .
>>
>> _______________________________________________
>> aspectj-users mailing list
>> aspectj-users@xxxxxxxxxxx
>> https://dev.eclipse.org/mailman/listinfo/aspectj-users
>>
>>
> 
> _______________________________________________
> aspectj-users mailing list
> aspectj-users@xxxxxxxxxxx
> https://dev.eclipse.org/mailman/listinfo/aspectj-users
> 
> 

-- 
View this message in context: http://old.nabble.com/Re%3A-adding-and-working-with-local-variables-using--aspect-J-tp27941080p27944998.html
Sent from the AspectJ - users mailing list archive at Nabble.com.