Hi All, I need to write a set of rules that each get executed only ONCE. However, the conditions are met at different stage of execution as events are coming thru a stream. Therefore I need to disable each rule at different stages. I was looking for some mechanism to disable a rule after it gets executed. Something like this. rule "myExecuteOnlyOnceRule"  when   //some condition tat evaluate events  then    this.rule.disable() / disable(drools.getRule()) end Let me know if you know such a function or a workaround for this issue. Cheers, Malinda _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Many thank Pavel. But I dont think I followed RuleXor in your reply. But I tried to insert an event with a key value in the RHS. The same value I used in LHS with other business logic to avoid repeated execution. e.g. when not EventR(Id="KEY") //Other logic then      //Other executions      insert(new EventR("KEY"); If I get your answer correct, this is similar to what you suggest. However, that solution seems bit ugly. It makes the other business logic very difficult to read. That's why I wanted to find a proper way to do that, uding drools API. Cheers, Malinda ----- Original Message ---- From: Pavel Tavoda <pavel.tavoda(a)gmail.com&gt; To: Rules Users List <rules-users(a)lists.jboss.org&gt; Sent: Sat, 20 February, 2010 12:18:33 AM Subject: Re: [rules-users] Disable rules at runtime to make sure they get executed only once Maybe here is some complex support for this but if you use ruleflows than it's complicated however what about (noob idea): rule "first - only once" when     not RuleXor( name == "first")     ... than     ....     insert (new RuleXor("first")); end On Fri, Feb 19, 2010 at 2:01 PM, Malinda Kaushalye <kaushalye(a)yahoo.com&gt; wrote: > Hi All, > I need to write a set of rules that each get executed only ONCE. However, the conditions are met at different stage of execution as events are coming thru a stream. Therefore I need to disable each rule at different stages. > I was looking for some mechanism to disable a rule after it gets executed. Something like this. > > rule "myExecuteOnlyOnceRule" >  when >   //some condition tat evaluate events >  then >    this.rule.disable() / disable(drools.getRule()) > end > > > Let me know if you know such a function or a workaround for this issue. > Cheers, > Malinda > > > > > > _______________________________________________ > 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 _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users