Re: [rules-users] Drool 5 API and Agenda Listeners

The primary reason to move to the "Knowledge APIs" apart from what you've already mentioned is that they help to bring together the newest features of Drools. In a single KnowledgeBase you can now have not only rules, but Flows, and Complex Event Processing. As to tracking activity on the agenda... there's two ways... 1. If you're using Eclipse, one great feature of the Drools plugin is the Audit Log. You can start logging with the following code: KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newFileLogger(knowledgeSession, FILENAME); Then open the resulting log in the Eclipse Drools Audit Log tab and get a pretty good graphical representation of what happened during your run. See the following URL for a screenshot: http://downloads.jboss.com/drools/docs/5.0.1.26597.FINAL/drools-expert/h tml_single/index.html#d0e6801 2. Create your own AgendaEventListener. Simply implement the interface and place whatever actions you want on each event. Then attach it to your session before you start processing like this: knowledgeSession.addEventListener(new YourAgendaListener()); Macon -----Original Message----- From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of SPAAARKY21 Sent: Sunday, October 11, 2009 12:26 PM To: rules-users(a)lists.jboss.org Subject: [rules-users] Drool 5 API and Agenda Listeners I recently moved from Drool 4 to 5 in a little example application I had written. At first I hesitated because I thought the API had changed drastically. When I did upgrade, I found that there were few changes. However, I was still using all of the "Rule" classes instead of the "Knowledge" classes - like RuleBase and StatefulRuleSession instead of KnowledgeBase and StatefulKnowledgeBase. It sounds like the "Knowledge" API is the way of the future so to speak but I haven't been able to find much information on it. What is the advantage in using the new "Knowledge" API? Will the "Rule" API become deprecated at some point? Anyway, after switching to the Knowledge API, I have been working on an agenda listener I had written. What I want to do is iterate through agenda groups on the focus stack and, for each group, iterate through the activations in the order in which they are queued up. However, I don't see any way to do that. In fact, since switching to Drools 5 and the "Knowledge" API, it looks like the API for dealing with the agenda and activations and whatnot has become quite small. Or at least it is when you stick to the interfaces. Am I missing a better way of doing this? Brandon -- View this message in context: http://www.nabble.com/Drool-5-API-and-Agenda-Listeners-tp25844904p258449 04.html Sent from the drools - user mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users