Re: [aspectj-users] Applying Aspects to business applications

["Carlos Lizarralde" <clizarralde@xxxxxxxxxx>]

I think Aspect Programming implies a change in the way we solve problems 
with OOP. This change requires the cleaning of some ideas we assume as 
obvious. 

In my opinion AspectJ will evolve as we start using it for something else 
than logging, security, contract enforcement, validations, etc. It's a 
challenge I am trying to deal with and I like it.

Excuse my spanglish  as I am Argentine.
Greetings,
Charly

-----Original Message-----
From: Arno Schmidmeier <A@xxxxxxxxxxxxxxx>
To: aspectj-users@xxxxxxxxxxx, "John R" <john_ela@xxxxxxxxxxx>
Date: Wed, 15 Jan 2003 21:46:50 +0100
Subject: Re: [aspectj-users] Applying Aspects to business applications

> Hello John,
> 
> On Wednesday 15 January 2003 19:11, John R wrote:
> > Hello all,
> >
> > I'm not sure if this is the right forum to be asking this question;
> if
> > there is a better one I would appreciate a pointer to the right
> discussion
> > group.
> >
> > I am learning about AOP and have read through several tutorials and
> > documents.  I'm having a hard time thinking about ways to apply
> > "crosscutting concerns" to handle business logic.  
> 
> Some of my experience: The most obvious "crosscutting concerns" are 
> "architecture concerns" as you have named them. From my experience you
> should 
> need to have some AOP experience or have some sessions with a good AOP 
> consultant, to be capable to identify the business concerns.
> Most OO-developers I have trained in AspectJ, they were simply
> "blinded", by 
> exisiting OO-approaches to implement business concerns.
>  
> 
> > Almost every AOP example
> > discusses the implementation of aspects in logging or enforcing
> contracts
> > but can anyone give an example of how an aspect can be applied in a
> way to
> > encapsulate a croscutting business logic concern (rather than an
> > architecture concern like logging)?
> >
> 
> Yes, I can.
> 
> > Can anyone think of (or direct me to an article) that discusses the
> > implementation of AOP to handle the business logic of an application
> rather
> > than the architecture of an application?
> >
> I will have a speak at the next AOSD about my experience using AspectJ
> to 
> integrate Applications easier into an EAI project. 
> Implementing Business Rules with AOP is another quite interesting
> topic.
> You can either glue a rule engine to the system, or even implement the 
> business rule in plain java. Both approaches are IMHO superior against
> the 
> current state of the art. 
> Maja`d Hondt has published some articles about that topic.
> 
> <off-topic>
> I am very interested to participate on such a project on reduced rates,
> and 
> create a case study afterwards, because it fits very nicely into my
> research 
> plan.
> </off-topic>
> 
> another crosscutting concern is the notification of the MVC-pattern in
> most of 
> the swing classes.
> 
> kind regards
>    Arno 
> 
> ***********************************************************************
> ******
> Arno Schmidmeier
> +49/9151/90 50 30
> or A@xxxxxxxxxxxxxxx
> ***********************************************************************
> *******
> Yes, I have realized several projects with AspectJ.
> Yes, I do provide consulting for AspectJ.
> 
> 
> > Thanks,
> >
> > -John R.
> >
> >
> >
> >
> >
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