Re: [rules-users] Initialize Global

I have the same "problem", but eval(objectList == null) doesn't work. If I don't execute "drools.getWorkingMemory().setGlobal()" it "works fine", as if the rule activates and the object is null. global List objectList; rule "Start" salience 101 when #conditions then objectList = new ArrayList() ; objectList.add("1"); objectList.add("2"); System.out.println("Start objectList:"+objectList); //drools.getWorkingMemory().setGlobal("objectList", objectList); end rule "end" salience 97 when eval (objectList == null) then System.out.println("End objectList: "+objectList); end gives: Start objectList:[1, 2] End objectList: null Next I uncomment the "drools.getWorkingMemory().setGlobal("objectList", objectList);" and run the rule again an get: Start objectList:[1, 2] End objectList: [1, 2] so the objectList isn't null, but the rule still activates... Kris Verlaenen schreef: >> That initialized my global but the rule still runs every execution. >> Can I >> disable the rule after the first execution? > What do you mean by "every execution". A rule should only be executed > once, unless it gets reactivated (which should not be the case in this > situation). > >> I would like to use (if (objectList==null)). My list is not >> immutable. Can >> I make a similar rule for the LHS? > You can test whether the global is null using eval( objectList == null > ) in the LHS of the rule. > > Kris > _______________________________________________ > 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