Re: [Repast-developer] aspectj and movement

[Laszlo G. <gu...@la...>]

Hi,

This is just off the top of my head, but I don't think having a
flag- or identity interface should confuse the user. (As a
matter of fact, they might get much more confused by
aspects in general, but as I said before, I'd take the challenge.)

In fact, repast already has identity interfaces (e.g. Torus
in the space lib), but it might well be true that a user
has never had to use them up to this point.

Just my two cents.

Gulya

PS: I began to think that I should submit all my dreams
to this list, given the response time by which, e.g. this
independent-of-space dream of mine seems to be getting
into shape... ;-)

At 10:59 AM 1/7/02 -0600, Thomas Howe wrote:
>Hi,
>I am currently working on implement movement behaviour using aspect 
>oriented programming, so that the agent doesn't have to make calls 
>directly to the space.  We have discussed this a little on this list, and 
>I'm just checking the feasibility.
>
>Here's where I stand.  I am using aspectj as my aop language  I have an 
>"introduction aspect" as aspectj calls it, that adds a move method to the 
>class.  Basically, an introduction aspect adds new code to an existing 
>class.  This way the user never has to see the code, and we don't have 
>issues of multiple inheritence.  That's all fine and dandy.  Here's the 
>question.  In order to use this, the aspect has to be able to determine 
>which classes should have the added behaviour.  The best way that I can 
>think of to implement this is with interfaces.  For example, a class would 
>declare that it implements MoveableAgent and then the aspect adds the code 
>as appropriate.  I wonder, though, if this may be a problem.  From the 
>point of view of a user, when you declare that you implement an interface, 
>you always have to implement the methods yourself.  Will it be too 
>confusing to declare that you implement an interface without actually 
>writing any code?
>
>This was not the clearest note I've written, but I hope my point is 
>somewhat understandable.  Please let me know if it is not.
>
>Thanks,
>Tom
>
>_______________________________________________
>Repast-developer mailing list
>Rep...@li...
>https://lists.sourceforge.net/lists/listinfo/repast-developer

--
Laszlo Gulyas, MSc              Phone: (617) 
384-9216
Government Department   Weatherhead Center for International Affairs
Harvard University              602C Coolidge Hall
1737 Cambridge street           Cambridge, MA-02138