Hello, So if I've well understand :
- before calling fireAllRules(), Drools know for all rules (from any group) definied in DRL files, those which all patterns in the LHS of a rule are matched, and those rules are placed on a agenda. At which moment exactly, Drools verified from a rule that all of its pattern in the LHS are matched, if it's before callling fireAllRules() ? - And fireAllRules() permit to execute all rules that are placed on agenda - When using setFocus() from a java class or a rule, we can control the order of rules to specify to execute rules from group B, and group C... - So it's not possible to tell Drools that we don't want to execute a group of rules if a rule A is not matched : in that group of rules : those which all paterns match LHS will be inevitably executed. All these points that I said, are exact? Thanks :-) Anstis, Michael (M.) wrote: > > Please accept that my knowledge is based on 4.x and there might be other > alternatives in 5. > > Rules are not "ran" but their patterns (LHS) evaluated as facts > (objects) are inserted into Working Memory. When all patterns in the LHS > of a rule are matched activations are placed on the agenda for execution > of the consequence (RHS) when fireAllRules() is called (or other > mechanisms to run what is on the agenda are invoked; such as RuleFlow). > So you could have rules in Group A cause Group B to receive the focus > but it is the RHS's execution order you control and not the pattern > matching - which will happen for Group A and Group B when facts are > inserted into WM. > > Look at Agenda Groups and RuleFlow. This should help. > > With kind regards, > > Mike > > -- View this message in context: http://www.nabble.com/Run-a-set-of-rules-in-a-group-B-from-a-rule-in-a-group-A-tp21580767p21582595.html Sent from the drools - user mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list [email protected] https://lists.jboss.org/mailman/listinfo/rules-users
