[rules-users] Tree iteration with accumulate: is it possible ?

Hello. I have a tree, with each leaf containing a random value. The value of each node is the sum of its children value. I would like to write a rule which looks like this: when nodeValue == 18 (e.g.) then // do something with this node end The accumulate conditional element looked adequate for this, so I wrote something like this when n: Node() accumulate( Leaf( parentNode == n, v : value ); nodeValue : sum( v ); nodeValue == 18 ) then // do something with n end So... the problem is that this works only for nodes where its direct childs are leafs, and not for upper nodes. Have you got an idea to solve this ? Thank you -- View this message in context: http://drools.46999.n3.nabble.com/Tree-iteration-with-accumulate-is-it-po... Sent from the Drools: User forum mailing list archive at Nabble.com.