Re: [rules-users] Could anyone suggest alternate approach

From: Edson Tirelli <ed.tirelli(a)gmail.com&gt; Subject: Re: [rules-users] Could anyone suggest alternate approach To: "Rules Users List" <rules-users(a)lists.jboss.org&gt; Date: Monday, November 23, 2009, 1:44 PM     Also, if each of your steps involve multiple rules, the best way to coordinate "phased" execution is to use ruleflow.     Edson 2009/11/23 Wolfgang Laun <wolfgang.laun(a)gmail.com&gt; Without salience, there is no guarantee that rule 1 will fire before rule 2. Seeing only part of the problem makes it difficult to shell out good advice. -W On 11/23/09, Greg Barton <greg_barton(a)yahoo.com&gt; wrote: > The reason rule 2 is executed even though rule 1 has fired is because you're > not notifying the engine that the CustomerDetail has been changed.  You need > the statement "update(d)" in the rule action. (And this is generally true > when you modify matched objects in a rule.  Only leave it out in the rare > circumstance when you do NOT want other rules to be triggered by a change.) > > Also, an alternative to your approach is using agenda-group.  Check the > docs. > > --- On Mon, 11/23/09, Lindy hagan <lindyhagan(a)gmail.com&gt; wrote: > >> From: Lindy hagan <lindyhagan(a)gmail.com&gt; >> Subject: [rules-users] Could anyone suggest alternate approach >> To: "Rules Users List" <rules-users(a)lists.jboss.org&gt; >> Date: Monday, November 23, 2009, 11:56 AM >> Please ignore my previous email as I >> did not include subject. >> >> I have 4 drl files in my app. Loading all the 4 during >> application startup. >> If any rule is satisfied in File 1,I don't want File 2 >> be called.Should execute File 3 and 4. >> Similarly If rules in File 1 is not satisfied,want to call >> File 2 then File 3 and 4. >> >> At present I am doing this way.Please let me know if >> this is ok or if there is any better solution. >> Set an attribute when a rule is satisfied. (attribute is >> not dummy,I need it in my app) >> Attribute is checked in each and every if it is null. >> >> Example File1.drl contains 2 rules.If first rule is >> satisfied, don't want to execute second rule.So setting >> rule with a valid number. >> >> File1.drl >> rule "1.Age Factor and Junior" >>      when >>           d : CustomerDetail( rule == "" >> && sale == 'Junior' && age in >> ("16","17")) >>      then >> >>      System.out.println("Junior and Age Satisfied >> "); >>       d.setRule("1"); >> end >> rule "2.Junior only Age Factor" >>      when >>           m : CustomerDetail( rule == "" >> && age in ("16","17")) >>      then >>       System.out.println("Only junior Age >> satisfied."); >> >>       m.setRule("2"); >> end >> >> File2.drl >> rule "3.Age Factor and Senior" >>      when >>           d : CustomerDetail( rule == "" >> && sale == 'Senior' && age in >> ("70","75")) >>      then >> >>      System.out.println("Senior and Age Satisfied >> "); >>       d.setRule("10"); >> end >> rule "4.Senior only Age Factor " >>      when >>           m : CustomerDetail( rule == "" >> && age in ("70","75")) >>      then >>       System.out.println("Only senior Age >> satisfied."); >> >>       m.setRule("11"); >> end >> This one works but I see these disadvantages: >> 1)If the rule 1 is satisfied, rule2 is still >> executed.Similary all the rules in File2.drl. >> 2)Might impact performance all the 4 rules are called all >> time. >> Any suggestions? >> >> -----Inline Attachment Follows----- >> >> _______________________________________________ >> 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 --  Edson Tirelli  JBoss Drools Core Development  JBoss by Red Hat @ www.jboss.com -----Inline Attachment Follows----- _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users