[rules-users] Drools Decision Table

[Michael Anstis]

So the date the original booking was taken controls which price rules need
be applied?

Why not add "date range in which these rules apply" patterns to the rules,
and have each product hold a reference to their original purchase\order
date:-

In DRL form:-

rule "1-Jan-2011 to 31-Mar-2011"
when
  DateRanges( $df : startDate, $de : endDate, rule=="version1" )
  Product( purchaseDate >= $df && < $de )
  ..
then
  ..
end

DateRanges contains date ranges for versions of the rules.

You keep all versions of rules in session.

My 2 cents.

On 18 April 2011 10:04, Riyaz Saiyed <Riyaz.saiyed at emirates.com> wrote:

> Ok, here is the scenario.
>
> If the selected product is “Product A”,
>         If the adult count is between 1 and 5
>                 Then price should be 50 USD per person.
>         If adult count is between 6 and 10 the price
>                 Then the price should be 600 USD per group
>
>
> Now when the first time the product is booked for 5 adults, get the price
> 50
> * 5 = 250 USD.
>
> In between price rule has been modified ad following.
>
> If the selected product is “Product A”,
>       If the adult count is between 1 and 5
>             Then price should be 40 USD per person.
>       If adult count is between 6 and 10 the price
>             Then the price should be 700 USD per group
>
> When the next time the order is modified change the adult count and
>      If the adult count is increased from 5 to 8, it should re-calculate
> the price to 600 USD as per previous rule.
>      Or
>      If the adult count is decreased from 5 to 3, it should re-calculate
> the price to 3 * 50 = 150 USD
>
>
> Thanks,
> Riyaz
>
>
> --
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>
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