I am trying to write a rule whose consequence loads several lists into the
session. Each list contains a different type of class. What I would like to
do (need to do as far as I can tell) is loop through the list and insert each
element individually, rather than inserting the list as a whole. Is ther a way
to do this in DRL?
Here is my example rule:
rule "Do we need to validate ONFI final action"
when
a : PackageMovementInfo( finalActionInd == "*", packageId == "AA")
b : SubmissionsInfoForRules(subId == a.subId, amendment == false,
onfiAssignmentId != null)
then
insert( new RuleFlag("Validate ONFI final action") );
insert( onfiService.getONFIAssignment(b.getSubId()) );
insert( onfiService.getONFIReviewers(b.getOnfiAssignmentId()) );
insert( onfiService.getONFIAttachments(b.getOnfiAssignmentId()) );
end
The last two insert statements insert lists. A problem occurs in subsequent
rules if I try to evaluate the contents of the lists. I've been getting a
ClassCastException when lists are present for both the reviewers and
attachments, because they are not the same class. Here is an example rule
that causes a ClassCastException:
rule "Validate ONFI final action - code 666"
when
RuleFlag(value == "Validate ONFI final action")
a: PackageMovementInfo(actionCode == "666")
b: ONFIAssignmentInfo(reviewType == "ES", subId == a.subId)
$list : List( size > 0 )
ONFIReviewerInfo(notId == b.notId, revStatus == "CLO", reviewerRole == "PR")
from $list
then
result.addMessage(a, "You can't do action code 666..." );
end
What I need to do is either (1) load each element of the lists individually, or
(2) rewrite "$list : List (size > 0)" to only pick up lists of a particular
class.
Is there a way to do either of these things from DRL? Or do I need to handle
the loading outside of my rules (in the Java class that calls the rules).
Thank you,
David Warren
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