There are certain domains where a collection of objects is itself a member of a
different collection of objects (e.g. zips in counties in states, persons in
cars at intersections). In these domains, it would be helpful to create LHS
conditions on the individual members of the "subcollection". An very
hypothetical example of a rule that send direct mail to wealthy zip codes in
counties with dealers in states where a business is licensed.
WHEN
$ServiceableState: State (LicensedInState=True)
$CountiesWithDealers: County (DealersInCounty>0) from $ServiceableState.counties
$WealthyZips: Zip (AvgIncome>$100,000) from $CountiesWithDealers.zips //2nd
from not allowed
THEN
$WealthyZips.SendDirectMail ()
I know Collect and Accumulate support nested From keywords, but can you nest
From keywords themselves to handle collections of collections?
Ken Archer
Telogical Systems
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