[rules-users] Constants and BigDecimals

[Wolfgang Laun]

You could do public final static MAX_AMOUNT in some class foo.Bar and then,
in DRL:
   import function foo.Bar.*;
and use MAX_AMOUNT as usual.

-W

On 8 October 2010 12:52, Evert Penninckx <evert.penninckx at gmail.com> wrote:

>
> Hi
>
> I've got the following rule:
>
> when
>  $sale : Sale( amount > 300 )
> then
>  modify($sale) { amount = 300; }
> end
>
> First problem: I don't like putting the constant value "300" two times in
> my
> rule.
>
> Second problem: amount is a BigDecimal. I read that mvel2 supports
> BigDecimal literals like 300.00B, but drools won't compile this.
>
> An ideal solution would look like something like this:
>
> when
>  $maxAmount : 300.00B
>  $sale : Sale( amount > $maxAmount )
> then
>  modify($sale) { amount = $maxAmount; }
> end
>
>
> 1. Is it possible to attribute values to a variable?
>
> 2. If not, is it possible to use mvel's BigDecimal support?  Because amount
> > 300.00B says a lot more than eval(amount.compareTo(new
> BigDecimal("300.00")) > 0).
>
>
>
> Evert
> --
> View this message in context:
> http://drools-java-rules-engine.46999.n3.nabble.com/Constants-and-BigDecimals-tp1664852p1664852.html
> Sent from the Drools - User mailing list archive at Nabble.com.
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