Introduce a Collect conditional element similar to the one in Drools. #166
Description
The collection conditional element similar to Drools allows you to specify set oriented bindings and reason over the set in the LHS of rules. A collect node was implemented that extends the from node. The example below finds all customers who have bought items over 10.
This blog describes collect, our implementation is similar. The example(s) in the blog were used as test cases.
http://blog.athico.com/2007/06/chained-from-accumulate-collect.html
This paper was used to develop the collect node:
http://citeseer.ist.psu.edu/viewdoc/download?doi=10.1.1.25.1076&rep=rep1&type=pdf
c : Customer;
items : Array items.length == c.items.length from collect( item: Item item.price > 10 from c.items );