[rules-users] How to handle priority in a rule

[Maxime]

Thanks for your reply but this does not do what I want to do because I 
don't want to put more priority to a rule over another one, I want this 
rule to fire with the price object that has the highest length field, 
considering there are more than one Price objects in the WM.

Any other ideas??  Am I trying something impossible or should I take 
another approach?

fakhfakh ismail a écrit :
> you can affect  a numero to salience in fact salience is used to give 
> a priority to rule and the rule who has the numero of salience more 
> priority
> rule "Price Product rule using price length"
> salience 500 ( for exemple  )
> when
> $s : Product (length > 0)
> $price : Price($length: length)
> then
> $s.setAmount($s.getAmount() + $price.getAmount());
> $s.setLength($s.getLength() - $length.intValue());
> modify($s);
> end
>
>
> */Maxime <mcatelin at perinfo.com>/* a écrit :
>
>     Hello,
>
>     I'm trying to find how to manage priority within a rule. Let me
>     explain
>     the problem. I'll try to be as clear as possible but bear with me
>     since
>     I am new to rules.
>
>     We have two objects, the Product is the object I'm trying to price
>     and
>     the object Price is the one that knows all the prices. Both
>     products and
>     prices have fields amount and length. Product amount is
>     initialized to
>     0 and prices are going to determine the product amount depending
>     on its
>     length.
>
>     Let's see an example :
>
>     Product : P -> length = 5, amount = 0
>     Price : P1 -> length = 1, amount = 50
>     Price : P2 -> length = 3, amount = 100
>
>     With this configuration, after asserting the 3 objects to the WM, the
>     amount field of Product P should have a value of 200 ( 1*100 + 2*50)
>     because the price with the greatest length should be favored over the
>     other ones.
>
>     Here is the rule I made :
>
>     rule "Price Product rule using price length"
>     when
>     $s : Product (length > 0)
>     $price : Price($length: length)
>     then
>     $s.setAmount($s.getAmount() + $price.getAmount());
>     $s.setLength($s.getLength() - $length.intValue());
>     modify($s);
>     end
>
>     This is obviously wrong because it always takes the first asserted
>     price
>     object. I don't know how to make a rule which would take the
>     amount of
>     the price object with the greatest length in priority.
>
>     Any help would be very much appreciated.
>
>     Cheers,
>
>     Max
>
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