[rules-users] Check all elements of a list (Drools Expert)

[Wolfgang Laun]

You can count (using the accumulate function) all objects of SomeOtherType.
Then, you can count (again, using the accumulate function) all object of
SomeOtherType meeting all the constraints.

For better performance (if this is an issue) you might use the stepwise form
of accumulate, ultimately returning a compound object containing both
counts, or implement a custom accumulate function.

-W


2011/2/24 Petr Chelčický <petr.chelcicky at centrum.cz>

>
> Hi! I'm trying to write rules in Drools Expert. In the when part of the
> rule, I check some properties of an Application object. This object contains
> a List and I would like to check if a bunch of rules apply to all objects of
> SomeOtherType in this list. The rule should fire only when the constraints
> are valid for ALL objects in that list. How could this be done?
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