In this case you can simply change your when clause so that it tests whether rules contains Rule1. Eg rule "Rule1" salience 100 no-loop true when $c:Chesse(type="Chedar" && not (rules contains "Rule1")) then modify ($c){addRule("Rule1")} end Hope that helps, Thomas > -----Original Message----- > From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users- > bounces(a)lists.jboss.org] On Behalf Of orchid > Sent: 11 January 2010 13:21 > To: rules-users(a)lists.jboss.org > Subject: [rules-users] Infinite loop when nesting rules > > > Hi, > > I have another question regarding rules nesting. I have the following Rule1 > and Rule2 which check some property of Cheese type (I dont want to merge > them into one rule). The "then" part of these rules updates the list field > of class Cheese which holds the rules that were fired for a specific > instance. In Rule3 I want to check if Rule1 and Rule2 were fired: > > rule "Rule1" > salience 100 > no-loop true > when > $c:Chesse(type="Chedar") > then > modify ($c){addRule("Rule1")} > end > > rule "Rule2" > salience 90 > no-loop true > when > $c:Chesse(price < 100) > then > modify ($c){addRule("Rule2")} > end > > rule "Rule3" > when > $c:Cheese(rules contains "Rule1" && rules contains "Rule2") > then > System.out.println("Rule3 was fired"); > end > > Rule1 and Rule2 cause infinite loop because of the 'modify' method. How can > I solve that issue? > > Thank you very much in advance !!! > -- > View this message in context: http://n3.nabble.com/Infinite-loop-when-nesting- > rules-tp116764p116764.html > Sent from the Drools - User mailing list archive at Nabble.com. > _______________________________________________ > 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 ************************************************************************************** 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. An NDS Group Limited company. www.nds.com _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users