[rules-users] Abstracting Rules using extends

[Davide Sottara]

I tried to reproduce the problem with no success, we'd need to know the
Vehicles and Vehicle classes,
as well as the actual objects you are feeding into the session.

I am also a bit skeptic about the update on the $vehicles master
object.. As Wolfgang already pointed
out, that is very likely to cause loops unless you have additional
conditions to prevent it.

Eventually, I'd need to know if and how the "some update" lines change
the object(s)... for example, do you
modify any attribute involved in equals/hashkey computation?

I confirm, instead, that the compiler silently accepts rules extending
other non-existing / unreachable rules,
and that is a very dangerous bug

Best
Davide

On 04/05/2013 01:58 PM, Arul Prashanth wrote:
> David, below are the content of the DRL's and have attached the full error
> trace herewith.
>
> error.txt <http://drools.46999.n3.nabble.com/file/n4023225/error.txt>  
>
> *Base DRL*
>
> /package com.poc.test;
>
>
> declare Test1
> 	code : String;
> end
>
> ruleflow-group "FLOW1"
>
> rule "INITIALIZE|test"
> salience 999999
> when 
> then
> 	insert(new Test1());
> end
>    
> rule "BASE|5.1"
> enabled false
> dialect "java"
> when    
> 		$test : Test1();
> 		$vehicles : Vehicles();
>     	$vehicle : Vehicle() from $vehicles.Vehicle;
>     then
>         // do nothing, extending rule to implement
> end/
>
> *Custom DRL*
>
> /
> package com.poc.test;
>
> ruleflow-group "FLOW1"
>
> rule "TX|5.1" extends "BASE|5.1"
> dialect "mvel" 
> 	when //use base condition
>     then
>    // some update 
>    update($vehicles);     
> end/
>
>
>
> -----
> - Prashanth
> --
> View this message in context: http://drools.46999.n3.nabble.com/Abstracting-Rules-using-extends-tp4023217p4023225.html
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