[rules-users] Removing many facts have invalid timestamp

[Wolfgang Laun]

Would you please define unambiguously what constitutes an "invalid time"?
>From your code it would appear that one time has to occur fivefold or
more often to
be "invalid".

In case any duplicates should be removed a simple high-priority rule
is sufficient:

rule killDuplicate
salience 1000
when
   $f1: Fact()
   $f2 :Fact( endTime == $f1.endTime )
then
  retract( $f2 );
end

-W




On 24/02/2012, Benjamin Bennett <benbennett at gmail.com> wrote:
> Trying to figure out if it can be done in a rule almost some sort of pre
> rule before other rules are triggered.
>
> The current rule I have is
>
> rule "RemoveInvalidEndTimestamps"
> salience 100
>
> when
>
> $factN : Fact()
> $factsToRemove : ArrayList(size>=5)
>                  from collect( Fact(endTime==$factN.endTime))
> then
> List newFactsToRemove = new ArrayList();
> newFactsToRemove.addAll($factsToRemove);
> for(Fact n : newFactsToRemove ){
>  retract(n);
> }
> end
>
> I am using a cloud based process . I could sort the facts and stream them
> in.
> Just in a few test cases there are many facts with invalid times , which
> kills the speed .
> >From the log I think that each collection of size>=5 , is triggered which
> means triggered for 5,6,7, etc.
>
> Just wondering if there is way to say before doing any other rules collect
> up all these invalid times and remove them.
>
> I was just going to write up a some java code and filter before feeding
> facts into drools but I find the rule syntax is much easier to read for the
> non software developers in my group.
>
>
> --
> Thanks,
>
> Benjamin Bennett
>
> <benbennett at gmail.com>
>