Path: coconuts.jaist!wnoc-tyo-news!wnoc-sfc-news!news0-cc-keio!ae-news!ae-news!iijima
From: iijima@ae.keio.ac.jp (Tadashi Iijima)
Newsgroups: fj.meetings,fj.org.ipsj
Subject: Tutorial: Aspect Oriented Programming
Date: 6 Sep 97 17:30:44
Organization: Dept of Admin. Engineering, KEIO Univ., Yokohama Japan.
Lines: 176
Distribution: fj
Message-ID: <IIJIMA.97Sep6173044@festiva.ae.keio.ac.jp>
NNTP-Posting-Host: festiva.ae.keio.ac.jp
Xref: coconuts.jaist fj.meetings:4188 fj.org.ipsj:285


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        $@%=%U%H%&%'%"9)3X8&5f2q%[!<%`%Z!<%8(J
           http://www.comp.ae.keio.ac.jp/lab/iijima/sigse.html
         $@Cf$N(J
           http://www.comp.ae.keio.ac.jp/lab/iijima/meetings/sigse97/se9709prog1.html
         $@$K$"$j$^$9!%%W%m%0%i%`$O3X2q;o2q9p%Z!<%8$K$b7G:\(J$@$5$l$F$$$^$9!%(J
         $@0J2<$K!$(J Gregor Kiczales$@;a$+$iD:BW$7$?MWLs$H<+8J>R2p!JK]Lu$r(J
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$@8e1g<T>R2p!JLu!'HSEg!K(J

  Gregor Kiczales$@;a$O!$(JXerox$@<R(JPalo Alto$@8&5f=j$N(Jprincipal scientist
$@$G$"$j!$%=%U%H%&%'%"!&%"!<%-%F%/%A%c!$%W%m%0%i%_%s%08@8l$*$h$S%=%U(J$@%H(J
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  $@H`$N8&5f@.2L$K$O%*%V%8%'%/%H;X8~8@8l$N@_7W$H<BAu$,$"$k!%(J
CommonLisp Object System(CLOS)$@$N@_7W<T$N0l?M$G$"$j!$(JPCL(CLOS
$@$N9b@-G=$J0\?"@-$N9b$$<BAu(J)$@$N<BAu<T$G$"$k!%(JCLOS$@$N(J$@%a%?%*%V%8%'(J
$@%/%H%W%m%H%3%k$r@_7W$7!$(JJim des Rivieres $@$H(J Danny Bobrow$@$H$H$b$K!$(J
$@!V(JThe Art of the Metaobject Protocol $@!W$H$$$&K\$rCx$7$F$$$k!%%*!<%W%s(J
$@!&%$%s%W%j%a%s%F!<%7%g%s$H$$$&35G0$r9=C[$7!$:G6a$G$O(J$@!$%"%9%Z%/%H;X8~(J
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1) Gregor Kiczales$@$5$s$K$D$$$F$O!$0J2<$N(JWWW$@%Z!<%8$b$"$j$^$9!%(J
  http://www.parc.xerox.com/spl/members/gregor/
2) $@%"%9%Z%/%H;X8~%W%m%0%i%_%s%0$K4X$7$F0u:~$5$l$?$b$N$G$O!$(J
  $@0J2<$NCf$K$b!$H>%Z!<(J$@%8$[$I$NC;$$$b$N$G$9$,8@5Z$5$l$F$$$^$9!%(J
  ACM Computing Surveys$@$N(JACM5$@#0#t#h(J Anniversary issue
  "Strategic Directions in Computing Research"(Vol.28 No.4,1996)$@$N(J
  $@Cf$N(JRachid Guerraoui et al.$@!'(J
  $@!H(JStrategicDirection in Object-Oriented Programming"
3) $@%"%9%Z%/%H;X8~%W%m%0%i%_%s%0$N%[!<%`%Z!<%8$O!$0J2<$G(J$@$9!%(J
  http://www.parc.xerox.com/aop/
4) $@%"%9%Z%/%H;X8~%W%m%0%i%_%s%0$N4J7i$J2r@b$O!$(J
  ACM$@$NEE;R?^=q(J$@4[!JEPO?$,I,MW$G$9$,!$%*%s%i%$%s$G$G$-$^$9!K$K(J
  $@$b$"$j$^$9!%(J
 
http://www.acm.org/pubs/articles/journals/surveys/1996-28-4es/a154-kiczales
5) $@<+8J>R2p$K=q$+$l$F$$$k%*!<%W%s!&%$%s%W%j%a%s%F!<%j%g%s$K4X$7(J
  $@$F$O!$(J
  http://www.parc.xerox.com/spl/projects/oi/
  $@0u:~J*$G$O!$(J
  Gregor Kiczales: "Beyond the Black Box: Open Implementation,"
  IEEE Software, January 1996
6) $@<+8J>R2p$K=q$+$l$F$$$k%a%?%*%V%8%'%/(J$@%H%W%m%H%3%k$NK\$O!$(J
  Gregor Kiczales, Jim des Rivirres, and Daniel G. Bobrow: 
  "The Art of the Metaobject Protocol," The MIT Press(1991)
  ISBN 0-262-11158-6(hc), ISBN 0-262-61074-4(pbk.)
$@!A!A!A!A!A(J$@!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A(J
$@%A%e!<%H%j%"%k9V1iMWLs!J86J8!K(J

Aspect-Oriented Programming
 (going beyond objects for better separation of concerns in
  design and implementation)

Gregor Kiczales
Principal Scientist, Xerox Palo Alto Research Center

Objects have been a great success.  They have improved software
development by allowing us to cleanly encapsulate units of functionality
of various scales -- from simple data structures to GUI tools to network
servers.

But objects don't seem to help as much in dealing with systemic concerns
such as synchronization, network usage, memory management, replication
and the like.  Trying to localize synchronization issues inside of an
object just doesn't seem to work as well as trying to localize UI
functionality inside of an object.  Much of the complexity and
brittleness in existing systems appears to stem from the way in which
the programming of these issues is intertwined throughout the code.

We have invented a new unit of software modularity, called an aspect,
that appears to provide a better handle on managing such systemic
issues.

Aspects are intended to be used in both design and implementation.
During design they make it possible to better localize systemic design
issues.  During implementation, aspect-oriented programming languages
make it possible to program directly in terms aspects, just as
object-oriented languages have made it possible to program directly in
terms of objects in the design.

This talk will present the idea of aspects, aspect-oriented programming,
the kinds of systems the technology appears to be best suited for, and
some of what it will take to get us there.

$@!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A!A(J$@!A!A!A!A!A!A!A!A(J
$@8e1g<T>R2p!J86J8!K(J

Gregor Kiczales is a principal scientist at the Xerox Palo Alto Research
Center.  His research interests are in software architecture,
programming languages and software engineering.  

He work includes object-oriented programming language design and
implementation -- he was one of the designers of the Common Lisp Object
system (CLOS), and was the implementor of PCL, a high-performance
portable implementation of CLOS.  He designed the CLOS metaobject
protocol, and authored, together with Jim des Rivieres and Danny Bobrow,
``The Art of the Metaobject Protocol''.  He developed the concept of
open implementation.  Most recently he has been focusing on
aspect-oriented programming, which is intended to provide an effective
way of handling systems in which there are issues of importance that are
not easy (or even possible) to localize to a single module.
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--
----- iijima