Hi Walfgang,
Thanks a lot for the pointers. My goal is to try detect a situation when
readings about a user is consistent high for the last 30 seconds. The
reading comes every 10 seconds. I have tried many different ways and still
can not get it working. Here are a list of things that I found not working,
I am wondering whether anyone has encountered some of this before or whether
there is a known issue related to some of this or whether there is some
configuration that I am missing in my environment. Also, what is a good way
to find out whether a event has expired or still in working memory? I am
stuck, please help.
1) the following rule does not work, according to drools book, this should
work.
rule "rule1"
dialect "mvel"
when
$user: mUser(status==true)
not (Reading ($user.userid== userid, reading<=90) over window :time
(30s) from entry-point ReadingStream
then
2) the following rules work on its own, (that is if I only include one rule
in the .drl file), but when I put both rules in the .drl file, only the
acumtest rule works but nothing comes out from "rule1"
rule "acumtest"
dialect "mvel"
when
accumulate( Reading( $r:reading) over windiw:time(30s) from entry-point
ReadingStream, $sum : sum($r))
then
System.out.print ("sum=" +$sum+"\n");
end
rule "rule1"
dialect "mvel"
when
$user: mUser(status==true)
$hr1 : Reading ($user.userid==$hr1.userid, reading>90) from
entry-point ReadingStream
$hr2 : Reading ($user.userid==$hr2.userid, reading>90, this after
[30s,30s] $hr1) from entry-point ReadingStream
not Reading ($user.userid == userid, reading<=90, this after $hr1,
this before $hr2) from entry-point ReadingStream
then
3) The following rule does not work, but if I comment out the accumulate
line in the condition, it works. Somehow, the accumulate function does not
work with other rules or making event expired ??
rule "rule1"
dialect "mvel"
when
$user: mUser(status==true)
$hr1 : Reading ($user.userid==$hr1.userid, reading>90) from
entry-point ReadingStream
$hr2 : Reading ($user.userid==$hr2.userid, reading>90, this after
[30s,30s] $hr1) from entry-point ReadingStream
not Reading ($user.userid == userid, reading<=90, this after $hr1,
this before $hr2) from entry-point ReadingStream
$test: Number( doubleValue>0 ) from accumulate ( Reading(
userid==$user.userid, $r:reading) over window:time(30s) from entry-point
ReadingStream, sum($r))
then
4) This does work, but if I uncomment out the $hr4 line, then it does not
work anymore
rule "rule1"
dialect "mvel"
when
$user: mUser(status==true)
$hr1 : Reading ($user.userid==$hr1.userid, reading>90) from
entry-point ReadingStream
$hr2 : Reading ($user.userid==$hr2.userid, reading>90, this after
[10s,10s] $hr1) from entry-point ReadingStream
$hr3 : Reading ($user.userid==$hr3.userid, reading>90, this after
[10s,10s] $hr2) from entry-point ReadingStream
// $hr4 : Reading ($user.userid==$hr4.userid, reading>90, this after
[10s,10s] $hr3) from entry-point ReadingStream
$test: Number( doubleValue>0 ) from accumulate ( Reading(
userid==$user.userid, $r:reading) over window:time(30s) from entry-point
ReadingStream, sum($r))
then
Thanks a lot!
Lin
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