[rules-users] parametrized rules

[Michael Anstis]

Sure, look at using Templates.

On 2 April 2012 15:18, Tim van Heugten <stimme at gmail.com> wrote:

> Hi all,
>
> I'm new to Drools, and wonder how I can most cleanly write down rules for
> the following.
>
> (For the sake of example) Say I have an object that needs to be processed
> season-dependent. I basically need a rule like:
> rule
>     when
>         Date( month == X, day >= Y, day <= Z)
>         // Some date containing object
>     then
>         System.out.println("Season is "+R)
>         // Store season in associated object
> end
>
> And fill in X, Y, Z and R with:
> X    Y    Z    R
> 1    1    31    Winter
> 2    1    29    Winter
> 3    1    21    Winter
> 3    22    31    Spring
> 4    1    30    Spring
> 5    1    31    Spring
> 6    1    21    Spring
> 6    22    30    Summer
> 7    1    31    Summer
> ...
>
>
> Should I expand all this rules by hand, and define 16 rules in my rule
> file? Or can I parametrize the rules and have this done automagically?
>
> Thanks a lot,
>
> Tim van Heugten
>
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>
>
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