[rules-users] Reg. Iterating over a list

Hi. I tried to identify relevant ways for some container specific operations like exists, forall (or foreach). Basically I have started using for software product line research, and specifically model checking over product line models. The initial results so fat ( considering the time I started) have been wonderful, alas I am tuck at this point. For example, consider : import java.util.List; import java.util.Arrays; import java.util.ArrayList; declare Project a : int b : int = 5 list : List = new java.util.ArrayList(java.util.Arrays.asList(1 , 2 , 3 , 4 , 5)) end Now that the element of Project - list is configured, I would like to perform some operations on it like: a) for each - for the list (Project - P; P.list), is each element is greater than 2? (or in essence - evaluating each element using a boolean expression). b) Similarly, a function like exists . for the list, is there any element for which this expression is satisfied - t > 2 && t < 5, where t is the iterator for the list. As the elements of the lists are mere numbers (in this case ints), I am not really aware/clear how I can use the Drools operations collect, for all etc. Previously I worked with Jess rule engine, and it has in built lambda functions which nicely provides list iterators and thus evaluating each element of the list against a boolean expression. I am at a very important point in my work, and any hint or solution will be highly appreciated. Many thanks :) Phani -- View this message in context: http://drools.46999.n3.nabble.com/Reg-Iterating-over-a-list-tp4019512.html Sent from the Drools: User forum mailing list archive at Nabble.com.