Re: Competing Crosscuts

I would go a step further and say that such "competing crosscuts" arise from
the inherent interdependencies in the stakeholders' requirements and this is
where one should start to address them. Of course, understanding such
requirements-level interdependencies allows one to make more informed
choices about the architecture.

Awais.


  _____  

From: [email protected] [mailto:[email protected]] On Behalf
Of Donisthorpe C (AT)
Sent: 16 May 2007 11:41
To: Markus Elfring
Cc: [email protected]
Subject: Re: [aosd-discuss] Competing Crosscuts


Markus
 
I'm not sure about tools to identify the problem at the code level.
 
I think it will not always be easy to spot this sort of problem in large
systems because the operation can be represented by a combination of several
states changes during its operation.  Thus resulting effects from competing
crosscuts could have several triggers - a compound effect?  
 
However, to respond productively to the problem of competing crosscuts, and
fragile pointcuts for that matter,  it would be easier to identify triggers
at the architectural level prior to implemetation.  
 
I think trying to identify these types of problems within instrumented code
is too late in the development process and can make problem solving complex
or impossible.  You might end up substantially changing the software design
by trying to resolve crosscut issues at the implementation stage.  Such
activity can potentially introduce other design errors into the software.
 
There is some support for this view from Chitchyan, R et al (2007)
"Semantics-based Composition for Aspect-Oriented Requirements Engineering".
 
 
Regards
 
Charles
 

  _____  

From: [email protected] on behalf of Markus Elfring
Sent: Tue 15/05/2007 17:50
To: [email protected]
Subject: Re: [aosd-discuss] Competing Crosscuts



> In the context of large complex software systems, can competing
> crosscuts influence the order of operation in a software system?
> If so, what evidence exists for this?

Are there any tools available that can show if the same place in a
source file will be affected by multiple pointcut expressions from
different aspects?
Would you like to filter the conditions on the source code if any rules
will be designed that specify opposite goals?

Regards,
Markus

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