To: dsb@cs.utexas.edu
Subject: aspects of aspects
Cc: demgr-students

Hi Don:

There are several AOP systems where you can define aspects of aspects:

Doug Orleans' Fred 
http://www.ccs.neu.edu/research/demeter/biblio/incremental-programming.html
is probably the cleanest of them. He unifies method and advice into one
construct, called a branch. To modify the behavior of a branch you define
an around branch or a branch with a more specific predicate. You can
iterate this process.

Aspectual Collaborations
http://www.ccs.neu.edu/research/demeter/biblio/JoinGraphs.html

http://www.ccs.neu.edu/research/demeter/talks/pl-day-2002/ovlinger-aspectual-collabs.pdf

allow you to compose aspects.

HyperJ
http://www.alphaworks.ibm.com/tech/hyperj

allows you to compose HyperSlices (aspects).

In DJ:
http://www.ccs.neu.edu/research/demeter/biblio/DJ-reflection.html
you can attach multiple visitors to the same traversal. Each visitor
is multiple pointcuts plus advice. So we have here a simple form
of visitor composition = aspect composition.

Your work on Genvoca also falls into this category?
Especially mixin layers?

-- Karl

at vanderbilt, you suggested that I look at some
papers that may be relevant to "aspects of aspects",
in particular one of yours.  Could you point me to them
and any others you think are relevant?

thanks.