[ajug-members] AspectJ question

[Brian Lee]

Thanks Dan, this is just what I'm looking for but I missed the around advice 
and only saw before and after.

I'll implement something like this.

BAL

>From: "Dan Marchant" <driedtoast at gmail.com>
>Reply-To: "General AJUG membership forum (100-200 
>messages/month)"<ajug-members at ajug.org>
>To: "General AJUG membership forum (100-200 
>messages/month)"<ajug-members at ajug.org>
>Subject: Re: [ajug-members] AspectJ question
>Date: Thu, 7 Sep 2006 06:52:15 -0400
>
>What you are looking for is around.
>
>public aspect PerformanceAspect {
>       pointcut largeMethods(int i): call(* get*(..)) && args(i);
>       Logger log = Logger.getLogger("PerformanceAspect");
>
>       Object around(int i): largeMethods(i) {
>         long start = System.currentTimeMillis();
>         Object obj = proceed(i*2);
>         long end = System.currentTimeMillis();
>         Signature sig = thisJoinPointStaticPart.getSignature();
>
>         log.info(sig.toString() + "Time took: " + (end-start));
>
>         return obj;
>       }
>     }
>
>
>Hope this helps. Obviously this sets out an example you can use.
>Look for Around Advice within the AspectJ docs.
>
>- Dan
>
>On 9/6/06, Brian Lee <brian_a_lee at hotmail.com> wrote:
>>Hello all,
>>
>>I am looking at using AspectJ for my Java 1.4 project. I was going through
>>the online docs and googled around, but couldn't find any examples of an
>>aspect class that is able to capture performance times for method calls.
>>
>>I would like to add a performance aspect to a set of methods so that I
>>output a log statement with the total time spent before and after the 
>>method
>>is executed.
>>
>>I saw a lot of examples of before and after join points, but not one that
>>could introduce a local long variable to store the currentTimeMillis 
>>before
>>and after the method executes.
>>
>>Has anyone else used aspects for this kind of performance logging? Any 
>>help
>>is appreciated.
>>
>>Thanks,
>>BAL
>>
>>
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