Re: [rules-users] Question about Drools accessing a global HashMap and comparing it to an object value
Hi Greg,
Thank you for the reply. I converted the rules back to being processed in
singular mode versus through an ArrayList as you recommended. I am curious
about the reason though -- is it a performance issue or does it just make it
more difficult to work with within the rule?
I tried your recommendation of the rule, but it caused an error:
rule "Check for valid code"
when
obj : MyObj(objState : state, objCode : code)
codes : State2Code(state == objState && objCode not memberOf codes)
then
obj.addError("Code is not valid for the State");
end
BuildError: Unable to create Field Extractor for 'objCode' of
'[ClassObjectType class=com.abc.xyz.StateFips]' in rule 'Check for valid
Code'
When I changed the rule to this, the error is gone and it worked just fine.
rule "Check for valid code"
when
obj : MyObj(objState : state, objCode : code)
codes : State2Code(state == objState && codes not contains objCode)
then
obj.addError("Code is not valid for the State");
end
Do you have any thoughts on why the first rule does not work but the second
one does? Is it a bug? The only difference between the rule I have and the
one you suggested was using a comma versus ==. I tried with the comma, but
the error remained. I am using Drools 5.1.1.
Mike V.
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