6:24 a.m.
Hi,
That's the first thought I had too!
But that way, I'll be getting an "alarm" for every event after $times
reached 10.
Ideally, I'd want the accumulate method to restart "accumulation" once
the RHS is triggered - so effectively the RHS would then be triggered
for every "distinct" 10 events accumulated.
Any out of the box solution for this?
Also, am wondering - if some of us can pitch in effort and come up with
a more detailed document on the Rule Language specifically? Going
through most of the mails, I feel that's the only learning curve - we
can make that even less challenging - like an "Advanced DRLs for
Dummies" :) ?
But before that... the resetting of my accumulator count, any ideas?
Cheers,
Rishi
----------------------------------------------------------------------
Message: 1
Date: Thu, 21 May 2009 18:16:01 +0200
From: Wolfgang Laun <wolfgang.laun(a)gmail.com Subject:
Re: [rules-users] can drools support complex rules (resetting
of Accumulate?)
To: Rules Users List <rules-users(a)lists.jboss.org
Message-ID:
<17de7ee80905210916gfddba51h35bf639ccf5af18a(a)mail.gmail.com Content-Type: text/plain; charset="iso-8859-1"
Well, it's definitely not forbidden to do a little computational work on
the
RHS, too.
Bind the result to a variable:
Number( $times : intValue > 10 )...
and, on the RHS, do
for( int i = 1; i <= $times % 10; i++ ) shout( "alarm" );
or whatever.
-W
On Thu, May 21, 2009 at 4:21 PM, <hrishikesh.varma(a)wipro.com> wrote:
> May be my understanding is wrong but looks like based on
rule I have
to
> pass all the required data. How can then at real time new rules can be
1+%280%29206+608+3777&Email=bhushan_bhangale@kaleconsultants.com<http://
www.plaxo.com/click_to_call?lang=en&src=jj_signature&To=%2B9%0A1+...
206+608+3777&Email=bhushan_bhangale(a)kaleconsultants.com > > > http://www.kaleconsultants.com
> > > > > > > > > > >
Disclaimer: This email (including any attachments) is intended for
the
> > To know more about Kale Consultants, visit
www.kaleconsultants.com
> > > ----------
> > > > > > >
_______________________________________________
> > rules-users mailing list
> > rules-users(a)lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> > > --
> Edson Tirelli
> JBoss Drools Core Development
> JBoss, a division of Red Hat @ www.jboss.com
>
Hi,
Temporal Reasoning with Accumulate - (like 3- rule "Customer login
from
more than 5 locations in the last one month")
What if I want to reset my count for accumulate within the time
specified sliding window.So that I can have the RHS triggered for
every
10times the event occurs in the same window.
For Example:
when
$customer : Customer( $id : id )
Number( intValue > 10 ) from accumulate(
CustomerLogin( loginStatus=="Failed", customerId
==
$id,$cusId:customerId)
over window:time( 30s ),
count( $ cusId) )
then
// do something as the customer had abnormal number of failed
violations in last 30 secs.
end
Right now am doing something similar, but using a manual approach -of
explicitly counting.
Any Light on this?
Regards
Rishi
----------------------------------------------------------------------
Message: 1
Date: Tue, 19 May 2009 11:17:41 -0400
From: Edson Tirelli <tirelli(a)post.com Subject:
Re: [rules-users] can drools support complex rules
To: Rules Users List <rules-users(a)lists.jboss.org
Message-ID:
<e6dd5ba30905190817q33d15b9er5efee64bc74cdb0e(a)mail.gmail.com Content-Type: text/plain; charset="windows-1252"
Your question is funny. First you ask if Drools is capable of
managing
complex rules and then you mention examples of extremely simple rules?
:)
Drools is FOL complete and so can represent any well formed First
Order
Logic expression. Anyway, I will use this message to advertise some of
the
temporal reasoning features that we have on Drools 5 for the benefit
of
anyone interested.
There are several ways of authoring such rules, depending on how
you
model your problem domain. One possible way of doing them is:
#1:
rule "If a customer login within 5 minutes from two different
locations,
mark the user invalid."
when
$l1 : CustomerLogin( )
$l2 : CustomerLogin( userId == l1.$id, location != $l1.id,
timestamp
after[0s, 5m] $l1.timestamp )
then
// mark user as invalid
end
In the previous example I assumed both login objects would be in
working
memory, but you can easily query for the previous login in an
external
datasource, pulling the data from the previous login on-demand for the
reasoning cycle.
#2:
rule "If the customer location is not on a list of valid locations,
mark
the
user invalid"
when
$l : CustomerLogin( location not memberOf $validLocations )
then
// mark the user invalid
end
In the above rule, I assume the valid locations list is a global list,
but
you can as easily model locations as being facts on your working
memory
or a
service end point that you can call to validate the location.
#3:
rule "Customer login from more than 5 locations in the last one month"
when
$customer : Customer( $id : id )
$locations : Set( size > 5 ) from accumulate(
CustomerLogin( customerId == $id, $loc : location
)
over window:time( 30d ),
collectSet( $loc ) )
then
// do something as the customer logged in from more than 5
locations
in
the last 30 days
end
In the previous rule I decided to use sliding windows, just to show
how
that
feature can be used to simplify rules, but again, there are several
ways
of
doing it.
I strongly recommend you read Drools manual.
http://www.jboss.org/drools/documentation.html
Cheers,
Edson
2009/5/19 Bhushan Bhangale <bhushan_bhangale(a)kaleconsultants.com
> Hi,
> I
recently came across Drools. I gone through the documentation and
the
> examples provide are quite simple. I want to know if it can be
really
> applied to complex real world problems.
>
Take for example,
> If
a customer login within 5 minutes from two different locations,
mark the
> user invalid.
> How can I write the above rule in drools? I have the data
when the
user
> last logged in and the data of current login. You can say two
objects.
> added?
> For
example,
> If
the customer location is not on a list of valid locations, mark
the
user
> invalid.
> For
the above rule I need to pass a list of valid locations as well.
> Now
how about "Customer login from more than 5 locations in the last
one
> month"?
>
Thanks
> *Mr. Bhangale Bhushan*
> *Associate Manager*
> *Kale Consultants Ltd.*
> bhushan_bhangale(a)kaleconsultants.com
> tel: +91 (0)206 608
3777<http://www.plaxo.com/click_to_call?lang=en&src=jj_signature&a...
sole
> use of the recipient/s and may contain material that is
CONFIDENTIAL.
Any
> unauthorized disclosure / copying / distribution or forwarding of
this
message
> or part is STRICTLY PROHIBITED. If you have erroneously received
this
> message,
> > please delete it immediately and notify the sender. No liability is
> assumed for
> > any errors and/or omissions in the contents of this message.
> Information in
> > this message that does not relate to the official business of this
> Company
> > shall be understood as neither given nor endorsed by it. If
> verification is
> > required please request a hard-copy version.
> 
3:18 p.m.
New subject: can drools support complex rules (resetting of Accumulate?)
Hi Rishi,
I am not sure about the complete semantics of what you asked for in your
first e-mail, but I think you are talking about a feature known as tumbling
windows in this second e-mail. Drools does not support tumbling windows out
of the box yet.
For now, the only way that I can think of for this is using a helper
object to simulate the window.
Having said that, adding tumbling windows to Drools would not be hard,
because the design already supports such features. We are missing time to
implement or a brave soul to contribute the feature! ;)
Edson
2009/5/22 <hrishikesh.varma(a)wipro.com>
Hi,
That's the first thought I had too!
But that way, I'll be getting an "alarm" for every event after $times
reached 10.
Ideally, I'd want the accumulate method to restart "accumulation" once
the RHS is triggered - so effectively the RHS would then be triggered
for every "distinct" 10 events accumulated.
Any out of the box solution for this?
Also, am wondering - if some of us can pitch in effort and come up with
a more detailed document on the Rule Language specifically? Going
through most of the mails, I feel that's the only learning curve - we
can make that even less challenging - like an "Advanced DRLs for
Dummies" :) ?
But before that... the resetting of my accumulator count, any ideas?
Cheers,
Rishi
----------------------------------------------------------------------
Message: 1
Date: Thu, 21 May 2009 18:16:01 +0200
From: Wolfgang Laun <wolfgang.laun(a)gmail.com>
Subject: Re: [rules-users] can drools support complex rules (resetting
of Accumulate?)
To: Rules Users List <rules-users(a)lists.jboss.org>
Message-ID:
<17de7ee80905210916gfddba51h35bf639ccf5af18a(a)mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
Well, it's definitely not forbidden to do a little computational work on
the
RHS, too.
Bind the result to a variable:
Number( $times : intValue > 10 )...
and, on the RHS, do
for( int i = 1; i <= $times % 10; i++ ) shout( "alarm" );
or whatever.
-W
On Thu, May 21, 2009 at 4:21 PM, <hrishikesh.varma(a)wipro.com> wrote:
> Hi,
>
>
> Temporal Reasoning with Accumulate - (like 3- rule "Customer login
from
> more than 5 locations in the last one month")
>
> What if I want to reset my count for accumulate within the time
> specified sliding window.So that I can have the RHS triggered for
every
> 10times the event occurs in the same window.
> For Example:
>
> when
> $customer : Customer( $id : id )
> Number( intValue > 10 ) from accumulate(
> CustomerLogin( loginStatus=="Failed", customerId
==
> $id,$cusId:customerId)
> over window:time( 30s ),
> count( $ cusId) )
> then
> // do something as the customer had abnormal number of failed
> violations in last 30 secs.
> end
>
>
> Right now am doing something similar, but using a manual approach -of
> explicitly counting.
>
> Any Light on this?
>
> Regards
> Rishi
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 19 May 2009 11:17:41 -0400
> From: Edson Tirelli <tirelli(a)post.com>
> Subject: Re: [rules-users] can drools support complex rules
> To: Rules Users List <rules-users(a)lists.jboss.org>
> Message-ID:
> <e6dd5ba30905190817q33d15b9er5efee64bc74cdb0e(a)mail.gmail.com>
> Content-Type: text/plain; charset="windows-1252"
>
> Your question is funny. First you ask if Drools is capable of
> managing
> complex rules and then you mention examples of extremely simple rules?
> :)
>
> Drools is FOL complete and so can represent any well formed First
> Order
> Logic expression. Anyway, I will use this message to advertise some of
> the
> temporal reasoning features that we have on Drools 5 for the benefit
of
> anyone interested.
>
> There are several ways of authoring such rules, depending on how
> you
> model your problem domain. One possible way of doing them is:
>
> #1:
> rule "If a customer login within 5 minutes from two different
locations,
> mark the user invalid."
> when
> $l1 : CustomerLogin( )
> $l2 : CustomerLogin( userId == l1.$id, location != $l1.id,
> timestamp
> after[0s, 5m] $l1.timestamp )
> then
> // mark user as invalid
> end
>
> In the previous example I assumed both login objects would be in
working
> memory, but you can easily query for the previous login in an external
> datasource, pulling the data from the previous login on-demand for the
> reasoning cycle.
>
> #2:
> rule "If the customer location is not on a list of valid locations,
mark
> the
> user invalid"
> when
> $l : CustomerLogin( location not memberOf $validLocations )
> then
> // mark the user invalid
> end
>
> In the above rule, I assume the valid locations list is a global list,
> but
> you can as easily model locations as being facts on your working
memory
> or a
> service end point that you can call to validate the location.
>
> #3:
> rule "Customer login from more than 5 locations in the last one month"
> when
> $customer : Customer( $id : id )
> $locations : Set( size > 5 ) from accumulate(
> CustomerLogin( customerId == $id, $loc : location
)
> over window:time( 30d ),
> collectSet( $loc ) )
> then
> // do something as the customer logged in from more than 5
locations
> in
> the last 30 days
> end
>
> In the previous rule I decided to use sliding windows, just to show
how
> that
> feature can be used to simplify rules, but again, there are several
ways
> of
> doing it.
>
> I strongly recommend you read Drools manual.
>
> http://www.jboss.org/drools/documentation.html
>
> Cheers,
> Edson
>
>
>
> 2009/5/19 Bhushan Bhangale <bhushan_bhangale(a)kaleconsultants.com>
>
> > Hi,
> >
> >
> >
> > I recently came across Drools. I gone through the documentation and
> the
> > examples provide are quite simple. I want to know if it can be
really
> > applied to complex real world problems.
> >
> >
> >
> > Take for example,
> >
> >
> >
> > If a customer login within 5 minutes from two different locations,
> mark the
> > user invalid.
> >
> > How can I write the above rule in drools? I have the data when the
> user
> > last logged in and the data of current login. You can say two
objects.
> >
> >
> >
> > May be my understanding is wrong but looks like based on rule I have
> to
> > pass all the required data. How can then at real time new rules can
be
> > added?
> >
> >
> >
> > For example,
> >
> >
> >
> > If the customer location is not on a list of valid locations, mark
the
> user
> > invalid.
> >
> >
> >
> > For the above rule I need to pass a list of valid locations as well.
> >
> >
> >
> > Now how about "Customer login from more than 5 locations in the last
> one
> > month"?
> >
> >
> >
> > Thanks
> >
> > *Mr. Bhangale Bhushan*
> > *Associate Manager*
> > *Kale Consultants Ltd.*
> > bhushan_bhangale(a)kaleconsultants.com
> > tel: +91 (0)206 608
>
3777<http://www.plaxo.com/click_to_call?lang=en&src=jj_signature&a...
>
1+%280%29206+608+3777&Email=bhushan_bhangale@kaleconsultants.com<http://
www.plaxo.com/click_to_call?lang=en&src=jj_signature&To=%2B9%0A1+...
206+608+3777&Email=bhushan_bhangale(a)kaleconsultants.com>
> >
> > http://www.kaleconsultants.com
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Disclaimer: This email (including any attachments) is intended for
the
> sole
> > use of the recipient/s and may contain material that is
CONFIDENTIAL.
> Any
> > unauthorized disclosure / copying / distribution or forwarding of
this
> message
> > or part is STRICTLY PROHIBITED. If you have erroneously received
this
> message,
> > please delete it immediately and notify the sender. No liability is
> assumed for
> > any errors and/or omissions in the contents of this message.
> Information in
> > this message that does not relate to the official business of this
> Company
> > shall be understood as neither given nor endorsed by it. If
> verification is
> > required please request a hard-copy version.
> >
> > To know more about Kale Consultants, visit www.kaleconsultants.com
> >
> > ----------
> >
> >
> >
> >
> >
> > _______________________________________________
> > rules-users mailing list
> > rules-users(a)lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
>
>
> --
> Edson Tirelli
> JBoss Drools Core Development
> JBoss, a division of Red Hat @ www.jboss.com
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> The information contained in this electronic message and any
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> WARNING: Computer viruses can be transmitted via email. The recipient
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------------------------------
Message: 2
Date: Thu, 21 May 2009 10:42:34 -0700 (PDT)
From: Steinar Haugen <steinar.haugen(a)gmail.com>
Subject: [rules-users] RuleBase.removeRule leads to
NoClassDefFoundError
To: rules-users(a)lists.jboss.org
Message-ID: <23657476.post(a)talk.nabble.com>
Content-Type: text/plain; charset=us-ascii
Hi,
We're having a problem with runtime rule administration; i.e. using
RuleBase.addRule and RuleBase.removeRule.
We're using Drools 4.0.7 on Sun JDK 1.4.2_11 and inside Weblogic 8.1 sp
6.
Typically we remove a few rules followed by adding a few rules. In some
cases, we receive a NoClassDefFoundError. Stacktrace is provided in
attached
file.
http://www.nabble.com/file/p23657476/stacktrace.txt stacktrace.txt
The class referenced (i.e. the one not found) is the removed rule.
Has anyone else seen this behaviour?
This seems like such a basic error that we're wondering if we're doing
something wrong here. We have been unable to find anything about this
To make matters worse, this actually leads to a deadlock. This is
because
lock / unlock in version 4.0.7 is not encapsuled in a try / finally
block in
AbstractRuleBase.removeRule(), so whenever an error occurs, the lock is
not
released.
I found a Jira issue regarding this, where this issue is addressed and
apparently fixed in an earlier version:
https://jira.jboss.org:8443/jira/browse/JBRULES-603
This fix has been rolled back, however, so this issue is present in
version
4.0.7.
We found a workaround for the deadlock by performing lock / unlock
ourselves, since drools will not lock if it has been performed already.
In addition, we encapsulate rulebase access with a read/write lock to
ensure
that whenever the rulebase is updated, no other operation towards it is
performed.
Regards,
Steinar Haugen
--
View this message in context:
http://www.nabble.com/RuleBase.removeRule-leads-to-NoClassDefFoundError-
tp23657476p23657476.html<http://www.nabble.com/RuleBase.removeRule-lea...
Sent from the drools - user mailing list archive at Nabble.com.
------------------------------
Message: 3
Date: Thu, 21 May 2009 23:57:51 +0200
From: Femke De Backere <femmyke(a)gmail.com>
Subject: [rules-users] [users-rules] Loading time ruleflow
To: Rules Users List <rules-users(a)lists.jboss.org>
Message-ID: <D4A555A5-AB32-404C-923B-B70C3EFB9892(a)gmail.com>
Content-Type: text/plain; charset="us-ascii"
Hi!
I'm testing the loading time of the line:
kbuilder.add(ResourceFactory.newClassPathResource("nodesflow.rf",
DroolsTest.class), ResourceType.DRF ); for a rule flow file with 1
split node, 3 split nodes, 7 split nodes, ...
But the results I already have are confusing:
1 split node
26071960,8
1
3 split nodes
1018762000
40, 85676594 times the time of 1 split node flow
7 split nodes
4974479,4
1,907968479 times the time of 1 split node flow
Can anybody explain why the 3 split node rule flow file takes a lot
longer than the 7 split rule flow file?
Thx,
Femke
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_______________________________________________
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--
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JBoss Drools Core Development
JBoss, a division of Red Hat @ www.jboss.com
5453
days inactive
5453
days old
1 comments
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participants (2)
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hrishikesh.varma＠wipro.com