Re: [rules-users] execute particular rules programmatically and dynamically

I have actually used this method for the one valid case I have thought of - unit testing rules. Steve 2011/4/1 Swindells, Thomas <TSwindells(a)nds.com&gt; > > Agreed, > > But if you really do want to you can setup an agenda filter so that only > the activation for the rule you care about is fired – but I don’t think > there are many valid cases where this is needed/desirable/appropriate. > > > > Thomas > > > > From: rules-users-bounces(a)lists.jboss.org > [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Michael Anstis > Sent: 31 March 2011 10:08 > To: Rules Users List > Subject: Re: [rules-users] execute particular rules programmatically and > dynamically > > > > Why would you want to execute a single rule? > > The logic you'd write to determine which rule to fire should itself be > part of the rules: So, for example, if you want to validate facts of type > "Smurf" then write a rule that matches on "Smurf". When you insert a "Smurf" > only the rules that match on this will become candidates for execution when > you call fireAllRules. Perhaps use of a stateless session would simplify > things so you need not worry about other facts in WM "polluting" the results > you expect to see? > > More and more questions are posted here asking how to make individual > rules execute; IMO the solution is to change your thinking about how Rules > Engines work. > > If you give your use-case we might be able to advise a better approach. > > With kind regards, > > Mike > > 2011/3/31 Wolfgang Laun <wolfgang.laun(a)gmail.com&gt; > > > > On 31 March 2011 07:58, Benson Fung <benson.redhat(a)gmail.com&gt; wrote: > > Hi, > > If there are 10 rules in the drools rulebase, and right now I would > like to execute one of the particular rule.  Is there any approach/way > to execute particular rule programmatically? > > No. The right hand side of a rule (code between "then" and "end") is > executed whenever there is a set of fact objects in Working Memory > satisfying the condition. If you insert such a set of facts and call > fireAllRules(), then it will happen. > > > >  I don't think > agenda-group or activation-group can do that, right?  Or is it > possible to create an agenda programmatically ? > > No to both. > -W > > > Thanks > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > > > > ________________________________ > > ************************************************************************************** > This message is confidential and intended only for the addressee. If you > have received this message in error, please immediately notify the > postmaster(a)nds.com and delete it from your system as well as any copies. The > content of e-mails as well as traffic data may be monitored by NDS for > employment and security purposes. To protect the environment please do not > print this e-mail unless necessary. > > NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 > 4EX, United Kingdom. A company registered in England and Wales. Registered > no. 3080780. VAT no. GB 603 8808 40-00 > > ************************************************************************************** > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users