[rules-users] New to rules engine - help in defining rules

[Jeevan Tambuluri]

Hello all,

I am looking for a way to define rules for the following problem:

class Tree {
...
 }

class Branch {
    Tree  mytree;
     int     branch_length;
...
}

Let's say I have a fact called Tree and another fact called Branch. 
Brach identifies which tree it belongs to.
Now, I want to write a rule to say that all branches in a tree must be 
of same length.
How do I do this with/without using accumulate or forall?

Thanks a lot for any help,

J