On 3 Sep 2012, at 00:56, Phani Saripalli <[email protected]> wrote:
> 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. p : Project() exists( Number( this > 2 && < 5 ) from p.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. > _______________________________________________ > rules-users mailing list > [email protected] > https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list [email protected] https://lists.jboss.org/mailman/listinfo/rules-users
