Re: [rules-users] Accumulate function, events and stream processing
Is
((DecimalType)$val).toBigDecimal()
working correctly, given what you have in $val?
Also, check that count(1) instead of sum(...) produces the expected value.
-W
On 30/01/2012, Juanker Atina <juankera(a)gmail.com> wrote:
I need your help to put to work an accumulate function.
So, i will introduce several facts into working memory (StateEvent, which i
declare as event) and i want to accumulate the last five values.
I have changed a property in drools.default.rulebase.conf
(drools.eventProcessingMode = STREAM) to make the engine works in stream
mode.
And my rule is:
declare StateEvent
@role( event )
end
rule "Testing"
when
$total : Number() from accumulate(
StateEvent(itemName=="Temperatura", $val : newState) over
window:length( 5 ),
sum ( ((DecimalType)$val).toBigDecimal().doubleValue() ) )
then
#actions
end
But it's not working, as the value of $total is 0.0, no matter what i do,
and the rule is firing with every fact in the working memory.
Any help will be appreciated.
Thanks