Thanks W,
I tried it out ,But didn't get any performance improvement :(
The issue might be that I am inserting too many objects into working memory
jayadevan
On Jun 1, 2009 3:36pm, Wolfgang Laun <[email protected]> wrote:
The first two patterns pair each driver assignment with each trip -
which is quite a lot of work to do. (The infix "and" between the 2nd
and 3rd pattern doesn't change this.) Also, the field restriction
"tripId in ($tid)" is not the most efficient way.
Try this:
rule "Assignment Check"
when
$creVo: DriverAssignVO($drId: driverId, $tid1: tripId)
$creVo: DriverAssignVO(driverId == $drId, $tid2: tripId != $tid1)
$trAsgn1: TripVO( tripId == $tid1, $startDtmUtc: startDtmUtc,
$endDtmUtc: endDtmUtc)
$trAsgn2: TripVO( tripId == $tid2,
((startDtmUtc >= $startDtmUtc && startDtmUtc
(endDtmUtc >= $startDtmUtc && endDtmUtc
then
System.out.println("TRIP ID: " + $crvo.getTripId());
end
Here the first two patterns produce all pairs of assignments of a
single driver, and the remainder checks for overlaps.
You'll also find that this produces two symmetric firings for each
overlap. It might be possible to avoid this by using "$tid2: tripId >
$tid1" in the second pattern, the id's data type permitting.
-W
2009/6/1 Mark Proctor [email protected]>:
> Please send these emails to the user list (in cc) so everyone can help,
not
> directly to me.
>
> Mark
> jayadevan m wrote:
>
> Hi
>
> We have one performance(memory) issue in drools-5
>
> Our Scenario
>
> We have 3 entities
>
> Trip - Entity representing details about trip
>
> Driver - Entity for driver , it contain details about driver
>
> Assignments - details about each assignments (one driver may assigned to
> many trip)
>
> The rule is to find ,"Find overlapping between trip assignments"
>
> For Implementing this we take the Trip ,Driver And Assignments entities
> from Data base and put it into working memory
>
> For Small number of records this rule work well ,
>
> But we want to check it against 15000 driver ,331176 assignments and
12745
> trips
>
> In that case it take huge amount of time for execution (rule firing )
>
>
>
> Rule is
>
> rule "Assignment Check"
>
> when
>
> $creVo: DriverAssignVO($drId: driverId ,$tid: tripId);
>
> $tripAssignment: TripVO(
>
> $tpid: tripId,
>
> $startDtmUtc: startDtmUtc,
>
> $endDtmUtc: endDtmUtc)
>
> and
>
> $trvo: TripVO(
>
> tripId != $tpid,
>
> tripId in ($tid),
>
> ((startDtmUtc >= $startDtmUtc && startDtmUtc
> $endDtmUtc) ||
>
> (endDtmUtc >= $startDtmUtc && endDtmUtc
> $endDtmUtc)));
>
> $crvo: DriverAssignVO($drvrId: driverId , driverId == $drId ,
> tripId != $tid, tripId == $tpid)
>
> then
>
> System.out.println("TRIP ID: " + $crvo.getTripId());
>
> end
>
>
>
> thanks and regards
>
> _______________________________________________
> rules-users mailing list
> [email protected]
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
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