[rules-users] BRMS: Evaluation: JBoss Rules 3.2?

[Mark Proctor]

not sure its that simple as the stack concept is built into the engine. 
but good luck.

Mark
Anstis, Michael (M.) wrote:
> 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 at lists.jboss.org
>     [mailto:rules-users-bounces at 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 at ford.com_>
>>
>>
>>     ------------------------------------------------------------------------
>>
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>
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