[rules-users] need some advice in defining rules

[Wolfgang Laun]

Have you considered the simple fact that a month may have between four
(full) and six (one or two fractional) weeks? Reminder objects ought to have
a field identifying the week; if they have its easy to count them per week
if they are simple facts in WM.

Note that the identificaton of weeks by running number per year also has up
to two fractional weeks.

-W


On Mon, Apr 27, 2009 at 6:08 PM, Brody bach <brodybach at yahoo.com> wrote:

>
> Hi all,
>
> I'm having difficulty in defining a rule for the following problem:
> We need to check if within a week there are more than 5 objects of type
> Reminder inserted into Memory.
> (one day corresponds to one object)
> The number of the inserted objects depends on the usage of the application.
> That means there could be nothing, 1, 2, or any number of the objects.
> Before, within a session, I inserted a list containg data from within one
> week (7 days).
> Than I can check using the rule:
> when:
> $list : list(size > 5)
> Reminder() from $list
> no String(trim == "limit reached");
> then
> System.out.println("This rule fires");
> insert new String("limit reached");
>
> Now I need to insert a list containing data from a whole month, but I still
> need to check whether within one week there are more than 5 reminders
> exist.
>
> so, the constraint list> 5 can't be used anymore for a single list. I tried
> to break the whole list in several smaller list, where each list represents
> one week.
> Now the problem is, if the rule fires for a certain week, than it won't
> work
> for the following weeks anymore.
>
> My idea is then to insert an integer containing specific number to the
> current list, i.e. the calendar week (i.e insert new Integer(52)) and then
> to prove this in LHS; but the problem is now how to prove the week number
> in
> LHS? as I remeber, a function can only be called within an eval statement
> and  in this case actually I should only prove the existence of an Integer
>
> Hope my explanation is quite understandable and looking forward for any
> hints
>
> Regards
>
> --
> View this message in context:
> http://www.nabble.com/need-some-advice-in-defining-rules-tp23259683p23259683.html
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>
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