[rules-users] Decision tree, Is this scenario possible in Drools 5.x, need to fire a new question based on the answer of previous

[rjr201]

I don't think it'd be too hard to model a decision tree in a .drl file. 

You'd need a rule for each node/transition in your graph. Something like: 

WHEN 
   $cn : CurrentNode( Node(name == "Is the dispute related to Unauthorised")
)
   $d : Decision ( answer = "Yes" )
   $nextNode : Node (name == "CM disputes the charge..")
THEN 
   retract $cn
   retract $d
   insert new CurrentNode($nextNode)
END

Then create rules that halt at nodes that have no transitions leading out of
them (end nodes).

You could then start it as a statefull session, and input the decisions one
by one until an end node is reached. 

I've done that kind of thing before and it's not been too cumbersome. But
then I don't know the context of what you are doing.. 



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