Curiouser and Curiouser! on aop http://matt.blogs.it/ RSS feed for topic aop Copyright 2006 Matt Mower Squib/0.1 self@mattmower.com self@mattmower.com en-gb Catching up on AOP Sun, 15 Feb 2004 12:17:37 +0000 <blockquote>Last tweak of AOP performance. With a last session of performance tweaking, and with help from the CGLIB people, our framework can now perform 17 million AOP method calls per second. CGLIB was updated to not create any Object[] array for zero-argument method calls, and along with caching of Invocation objects (per thread, in a threadlocal) calls can now be made without creating ANY objects as a side-effect. There is also no synchronization in the method invocation code, so there's no performance degradation when multiple threads are working simultaneously. Very nice. <p> This means that it is possible to implement dynamic AOP in a rather performant way. I was worried that all of that framework stuff would make it crawl, but 17 million calls per second is actually quite decent, at least for a large portion of applications. [<a href="http://jroller.com/page/rickard">Random thoughts</a>]</blockquote> <p>After a really long hiatus I have been picking up on Aspects again. I came across some stuff written by Rickard which really tweaked my curiousity. I last looked at AOD about 3-4 years ago when <a href="http://eclipse.org/aspectj/">AspectJ</a> was pretty new, now it's part of the Eclipse project and aspects seem to have become a credible solution to some real OOD problems. That's cool, they always appealed to me. I like the look of <a href="https://dynaop.dev.java.net/">Dynaop</a> myself.</p> http://matt.blogs.it/entries/00001885.html Static crosscutting Tue, 02 Mar 2004 07:23:12 +0000 <blockquote>Static crosscutting rocks!. As outlined in <a href="http://www-106.ibm.com/developerworks/java/library/j-aopsc/?ca=dgr-jw23j-aopsc">this</a> article, static crosscutting can be a powerful tool when designing a complex system, especially as it in my experience enables incredible levels of reuse.[<a href="http://jroller.com/page/rickard">Random thoughts</a>]</blockquote> <p>Static crosscutting does look like a powerful way to add functionality to solutions without introducing potentially harmful dependencies. This will need some more thinking about.<p> http://matt.blogs.it/entries/00001941.html A little light reading Sun, 14 Mar 2004 13:26:15 +0000 <p>Papers I read on the plane home yesterday:<ul> <li><a href="http://jroller.com/page/rickard/20040306">Implementing dynamic AOP using abstract schema</a> by <a href="http://www.jroller.com/page/rickard">Rickard Öberg</a></li> <li><a href="http://www.cognexus.org/">Sense-Making and Knowledge Collaboration Tools</a> by Dr. Jeffrey Conklin.</li> </ul></p> <p>Rickard is doing a lot of thinking (& acting) in the Aspect Oriented Programming (AOP) field. I think it's pretty exciting and fully expect AOP to be as mainstream, in 3-5 years, as OOP is today. I'm playing with <a href="https://dynaop.dev.java.net/">Dynaop</a> which is a very <em>low impact</em> AOP solution for Java written by <a href="http://crazybob.org/roller/page/crazybob">&quot;Crazy Bob"</a>. It's a great package and laughably easy to get started with.</p> <p>Sense making is I guess one of my key themes these days. My work has taken me from the mainstream of KM (i.e. document management) into the world of organisational complexity, deep collaboration, <em>wicked</em> problems, patterns in information and making sense of it all. In particular this paper introduced me to Issue Based Information Systems (IBIS) and how they affect tools & approaches.</p> http://matt.blogs.it/entries/00001979.html