Thanks Mark, I think I've got the hang of AgendaGroups!! Presumably if I sub-class DefaultAgenda and override setFocus(AgendaGroup ag) and getNextfocus() I can implement my own flow-like mechanism instead of the standard stack. I'd need to add a way in which to override the DefaultAgenda created in ReteooWorkingMemory's constructor too but this again should be a simple sub-class (together with a subclass of ReteooRulebase with override of newWorkingMemory and a new RuleBaseFactory to allow me to construct these new objects). Anything major I've missed - my experience with rules engines now totals a couple of weeks and it's possible I'm missing the point!! With kind regards, Mike ________________________________ From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Mark Proctor Sent: 22 January 2007 16:33 To: Rules Users List Subject: Re: [rules-users] BRMS: Evaluation: JBoss Rules 3.2? Anstis, We don't have ruleflow, but we do have AgendaGroups which can provide a form of rule flow, just that its actually stack based. I'm working on a more general ruleflow idea at the moment, it may make it into the end of Q1 release, but its not defnite yet. Normally you cache the rulebase in a singleton and then just creating working memory instances as and when you need to - creating a working memory is light. The guided gui builder is for 3.2, it's web only based on GWT, I believe that it will also do DSLs (Mic will have to confirm that). Mark Anstis, Michael (M.) wrote: Hi, I'm evaluating BRMS's for a new project at work. JBoss Rules today swung into pole position however I am unclear on a number of features. I wonder whether this user-group can help? I list a number of aspects I "think" are currently missing in JBoss Rules together with my thoughts: If anybody can clarify the position, provide alternatives or help push JBoss Rules I'd be pleased to hear! * We require ruleflow (where rules run sequentially; like "identify all machines X" then "calculate prices" - not perhaps a good illustration as this could be written as one rule "calculate all prices using machine XXX"!!!). Ideally "dynamic" ruleflow is required too - where the next rule in a sequence is determined by the outcome of a preceding rule (I have seen dynamic achieved with "trigger" Facts asserted as the RHS of rules however our "Business Users" cannot be expected to author rules following this design pattern. I have also seen static implemented with salience). Is ruleflow (static or dynamic) part of 3.2 - otherwise we'll need to categorise rules having different types fired throughout a "coded" process in Java. * A J2EE runtime to provide scalability of the RETE engine. We need to have the engine being shared across sessions on a web-server. What experiences have others had? Do you simply provide a working memory instance per session (how does this scale horizontally?). I also read that an Application Server runtime would be part of 3.2, is this true? * A rule authoring environment for end-users. I read on Mark Proctor's blogg that this is in development but is it set for inclusion in 3.2 and does it handle DSL too; otherwise we'd have to write out own? With kind regards, Michael Anstis ------------------------------------------- Next Generation Estimating System * Trafford House (Int) 8 718 2239 * Trafford House (Ext) +44 (0)1268 702239 * <mailto:manstis1@ford.com <mailto:manstis1@ford.com> > ________________________________ _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users