If you don't want to define your model as Java classes you can define it in drl syntax: http://docs.jboss.org/drools/release/5.3.0.Final/drools-expert-docs/html_... Best Regards, XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX Esteban Aliverti - Developer @ http://www.plugtree.com - Blog @ http://ilesteban.wordpress.com On Mon, Nov 14, 2011 at 12:06 PM, santiago carbonell <scarbonell(a)ono.com&gt;wrote:

Keep in mind that using these Declared Types in DRL will have an impact in high volume systems. Each time a knowledge session is initialized, these classes are dynamically loaded onto the class-path. This dynamic loading (and unloading) subjects your knowledgesession to a large amount of garbage collection. As a result, if you have a high volume processing system you could very quickly reach a heap exception due to insufficient garbage collection. In real-time point processing this does not cause a problem, but in high volume processing it could. I have noticed that in my high-volume applications, anytime I use decalred types or DRL functions, that my rules run about 20% slower than when I use the exact same code in my JAVA system, and have Drools access them as imported functions, and types. (because they are local to the app, Drools does not have to invoke the class loader on all these objects, which does slow down processing time). Keep in mind, I don't know the details of what drools is doing, but I have observed behavior in the JVM via monitoring tools to support this claim at a basic level. So go ahead and use declared types, but if you find yourself running into a bunch of weird processing errors, it may be because of the declared types. From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Esteban Aliverti Sent: Monday, November 14, 2011 3:21 AM To: Rules Users List Subject: Re: [rules-users] programming classes to represent domain in Drools like templates If you don't want to define your model as Java classes you can define it in drl syntax: http://docs.jboss.org/drools/release/5.3.0.Final/drools-expert-docs/html_... Best Regards, XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX Esteban Aliverti - Developer @ http://www.plugtree.com - Blog @ http://ilesteban.wordpress.com On Mon, Nov 14, 2011 at 12:06 PM, santiago carbonell <scarbonell@ono.com<mailto:scarbonell@ono.com>> wrote: Hi, I'm new in drools and I'm doing some test with this fantastic engine. With Drools, I've loaded a drl file with some rules and ran with drools engine and works perfect, but I got to preset/programming some classes in Java about the domain where rules worked. I'd like to load this domain, this "classes" as a file, like drl files, but insted of rules, I'd like to load classes, or domain, so I'd needn't to preset/programming this classes in Java. My question is how can I load this classes in some file, like drl files with rules? Is like templates in clips. Thanks -- View this message in context: http://drools.46999.n3.nabble.com/programming-classes-to-represent-domain... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org> https://lists.jboss.org/mailman/listinfo/rules-users