Re: [rules-users] Sliding Length Windows
Hello, Thank you for your response, I understand how the sliding window works now. However, when I use the code you wrote I get the following error: Exception in thread main java.lang.RuntimeException: Unable to resolve ObjectType 'List' : [Rule name='Rule2'] Unable to Analyse Expression $last2: [Error: unable to resolve method using strict-mode: java.lang.Object.$last2()] My rule looks like this: rule Rule2 when $last2: List() from collect( Notif() over window:length(2) ) $nNewONT : Number() from accumulate ( Notif( specificProblem == New ONT ) from $last2, count() ) then ... end Do Lists require any additional code?... Thanks in advance, Diana -- View this message in context: http://drools.46999.n3.nabble.com/Sliding-Length-Windows-tp3438408p3467432.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Sliding Length Windows
import java.util.List Edson 2011/10/31 diana-mendes diana-men...@hotmail.com Hello, Thank you for your response, I understand how the sliding window works now. However, when I use the code you wrote I get the following error: Exception in thread main java.lang.RuntimeException: Unable to resolve ObjectType 'List' : [Rule name='Rule2'] Unable to Analyse Expression $last2: [Error: unable to resolve method using strict-mode: java.lang.Object.$last2()] My rule looks like this: rule Rule2 when $last2: List() from collect( Notif() over window:length(2) ) $nNewONT : Number() from accumulate ( Notif( specificProblem == New ONT ) from $last2, count() ) then ... end Do Lists require any additional code?... Thanks in advance, Diana -- View this message in context: http://drools.46999.n3.nabble.com/Sliding-Length-Windows-tp3438408p3467432.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- Edson Tirelli JBoss Drools Core Development JBoss by Red Hat @ www.jboss.com ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Sliding Length Windows
Thank you! Diana -- View this message in context: http://drools.46999.n3.nabble.com/Sliding-Length-Windows-tp3438408p3468583.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Sliding Length Windows
Hi Diana,
This happens because the order in which things happen. Up to Drools 5.3,
Drools apply first filters (a.k.a., alpha constraints or literal
constraints), then the sliding windows, then the joins.
So in your case,
Notif( specificProblem == New ONT ) over window:length(2)
Drools is first filtering your Notif events with specificProblem == New
ONT, and on those it is applying the sliding window.
To do what you want, you need to separate the definition of the window
from the actual filter:
$last2: List() from collect( Notif() over window:length(2) )
$nNewONT : Number() from accumulate ( Notif( specificProblem == New ONT )
from $last2, count() )
I know this is confusing in some cases and for Drools 5.4 we will add
explicit window declarations, so that (among other advantages) we reduce
surprises like that and completely separate window-scoped filters from
rule-scoped filters.
Edson
2011/10/20 diana-mendes diana-men...@hotmail.com
Hello,
I'm having trouble using sliding length windows. Either I'm implementing
them wrong or I have misunderstood how they're supposed to work.
I have a class named Notif:
*public class Notif implements Serializable{
...
private String specificProblem;
...
public String getSpecificProblem() {
return specificProblem;
}
public void setSpecificProblem(String specificProblem) {
this.specificProblem = specificProblem;
}
}*
These Notif's represent my events. I want to know how many Notifs with
specificProblem New ONT are there in the last 2 received events.
My .drl file looks like this:
*declare Notif
@role( event )
end
rule Rule1
when
$event : Notif()
$nNewONT : Number() from accumulate (
Notif( specificProblem == New ONT ) over window:length(2),
count() )
then
System.out.println(In the last 2 events there were
+$nNewONT+ events
'New ONT');
end*
My test file:
*...
session.insert(ONTIsInactive1);
session.insert(newONT1);
session.insert(ONTIsInactive2);
session.insert(newONT2);
session.insert(LOKS1);
session.insert(LOKS2);
session.insert(LOKS3);
session.insert(newONT3);
session.fireAllRules(); *
As you probably can tell by the names, the events I'm looking for are the
2nd, the 4th and the last one.
But the output I get is:
In the last 2 events there were 2 events 'New ONT'
In the last 2 events there were 2 events 'New ONT'
In the last 2 events there were 2 events 'New ONT'
In the last 2 events there were 2 events 'New ONT'
In the last 2 events there were 2 events 'New ONT'
In the last 2 events there were 2 events 'New ONT'
In the last 2 events there were 2 events 'New ONT'
In the last 2 events there were 2 events 'New ONT'
The output I'm looking for is:
In the last 2 events there were 0 events 'New ONT' (because the received
event is ONTIsInactive)
In the last 2 events there were 1 events 'New ONT' (because the last 2
received events are ONTIsInactive and New ONT)
In the last 2 events there were 1 events 'New ONT' (because the last 2
received events are New ONT and ONTIsInactive)
...
and so on...
What am I doing wrong? Any help would be appreciated!
Thanks in advance,
Diana
--
View this message in context:
http://drools.46999.n3.nabble.com/Sliding-Length-Windows-tp3438408p3438408.html
Sent from the Drools: User forum mailing list archive at Nabble.com.
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
--
Edson Tirelli
JBoss Drools Core Development
JBoss by Red Hat @ www.jboss.com
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Sliding Length Windows
Hello,
I'm having trouble using sliding length windows. Either I'm implementing
them wrong or I have misunderstood how they're supposed to work.
I have a class named Notif:
*public class Notif implements Serializable{
...
private String specificProblem;
...
public String getSpecificProblem() {
return specificProblem;
}
public void setSpecificProblem(String specificProblem) {
this.specificProblem = specificProblem;
}
}*
These Notif's represent my events. I want to know how many Notifs with
specificProblem New ONT are there in the last 2 received events.
My .drl file looks like this:
*declare Notif
@role( event )
end
rule Rule1
when
$event : Notif()
$nNewONT : Number() from accumulate (
Notif( specificProblem == New ONT ) over window:length(2),
count() )
then
System.out.println(In the last 2 events there were
+$nNewONT+ events
'New ONT');
end*
My test file:
*...
session.insert(ONTIsInactive1);
session.insert(newONT1);
session.insert(ONTIsInactive2);
session.insert(newONT2);
session.insert(LOKS1);
session.insert(LOKS2);
session.insert(LOKS3);
session.insert(newONT3);
session.fireAllRules(); *
As you probably can tell by the names, the events I'm looking for are the
2nd, the 4th and the last one.
But the output I get is:
In the last 2 events there were 2 events 'New ONT'
In the last 2 events there were 2 events 'New ONT'
In the last 2 events there were 2 events 'New ONT'
In the last 2 events there were 2 events 'New ONT'
In the last 2 events there were 2 events 'New ONT'
In the last 2 events there were 2 events 'New ONT'
In the last 2 events there were 2 events 'New ONT'
In the last 2 events there were 2 events 'New ONT'
The output I'm looking for is:
In the last 2 events there were 0 events 'New ONT' (because the received
event is ONTIsInactive)
In the last 2 events there were 1 events 'New ONT' (because the last 2
received events are ONTIsInactive and New ONT)
In the last 2 events there were 1 events 'New ONT' (because the last 2
received events are New ONT and ONTIsInactive)
...
and so on...
What am I doing wrong? Any help would be appreciated!
Thanks in advance,
Diana
--
View this message in context:
http://drools.46999.n3.nabble.com/Sliding-Length-Windows-tp3438408p3438408.html
Sent from the Drools: User forum mailing list archive at Nabble.com.
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
