12:11 p.m.
Hi, I am using Drools 3.0.6, and facing a peculiar problem.
My rule:
*
rule* "Calculate Business profit,1"*
**salience* 1000
*when
**EMIAgainstProperty ( BP1 : refBP1 )
*emi : EMIAgainstProperty ( businessProfit2 > BP1 )
*then* *
*System.out.println(" BP "+(emi.getBusinessProfit1
()+emi.getBusinessProfit2())/2);*
*emi.setBusinessProfit((emi.getBusinessProfit1
()+emi.getBusinessProfit2())/2);*
**end*
**
The above line in bold inside the condition part seem to create problem for
rule evaluation. WHen i have this, the rule does not show up in the Agenda
view, hence i dont see the console print in the action part. As soon as i
remove this line and replace BP1 with 1.5 in the second line, i see the rule
being fired.
As far as i understand, I am doing a declaration to set refBP1 an object
attribute to BP1, which i later use.What is that i am missing here? My fact
has proper getter and setters for refBP1 attribute.
Thanks
Natraj
1:01 p.m.
Hi Natraj,
I wrote up a few tactics to (successfully) debug rules:
http://rbs.gernotstarke.de/faq/faq/faq-devel.html
It's neither finished nor complete - but try it out...
(test both conditions with one rule for each of them,
test for the existence of the appropriate facts,
include a catchall-rule which prints all facts from wm.)
regards,
Gernot
Hi, I am using Drools 3.0.6, and facing a peculiar problem.
My rule:
*
rule* "Calculate Business profit,1"*
**salience* 1000
*when
**EMIAgainstProperty ( BP1 : refBP1 )
*emi : EMIAgainstProperty ( businessProfit2 > BP1 )
*then* *
*System.out.println(" BP "+(emi.getBusinessProfit1
()+emi.getBusinessProfit2())/2);*
*emi.setBusinessProfit((emi.getBusinessProfit1
()+emi.getBusinessProfit2())/2);*
**end*
**
The above line in bold inside the condition part seem to create problem
for
rule evaluation. WHen i have this, the rule does not show up in the Agenda
view, hence i dont see the console print in the action part. As soon as i
remove this line and replace BP1 with 1.5 in the second line, i see the
rule
being fired.
As far as i understand, I am doing a declaration to set refBP1 an object
attribute to BP1, which i later use.What is that i am missing here? My
fact
has proper getter and setters for refBP1 attribute.
Thanks
Natraj
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
--
Dr. Gernot Starke
Willi-Lauf Allee 43, D-50858 Köln
Tel. +49 (0) 177 - 728 2570
Mail: gs(a)gernotstarke.de
http://www.gernotstarke.de
http://www.arc42.de
3:54 p.m.
Hi Starke,
Thanks a lot for your inputs. Apart from being able to debug using your
stuff, my main concern is that a simple declaration is making the rule not
to fire. Why is that so?
I am pretty sure, when i remove that particular line the fact which is
passed passes the condition.
The Drools documentation has a clear example which does the same.
Any help in this regard will highly be appreciated.
Thanks
Natraj
On 7/18/07, Dr. Gernot Starke <gs(a)gernotstarke.de> wrote:
Hi Natraj,
I wrote up a few tactics to (successfully) debug rules:
http://rbs.gernotstarke.de/faq/faq/faq-devel.html
It's neither finished nor complete - but try it out...
(test both conditions with one rule for each of them,
test for the existence of the appropriate facts,
include a catchall-rule which prints all facts from wm.)
regards,
Gernot
> Hi, I am using Drools 3.0.6, and facing a peculiar problem.
>
> My rule:
>
> *
>
> rule* "Calculate Business profit,1"*
> **salience* 1000
>
> *when
>
> **EMIAgainstProperty ( BP1 : refBP1 )
> *emi : EMIAgainstProperty ( businessProfit2 > BP1 )
>
> *then* *
> *System.out.println(" BP "+(emi.getBusinessProfit1
> ()+emi.getBusinessProfit2())/2);*
> *emi.setBusinessProfit((emi.getBusinessProfit1
> ()+emi.getBusinessProfit2())/2);*
> **end*
>
> **
>
> The above line in bold inside the condition part seem to create problem
> for
> rule evaluation. WHen i have this, the rule does not show up in the
Agenda
> view, hence i dont see the console print in the action part. As soon as
i
> remove this line and replace BP1 with 1.5 in the second line, i see the
> rule
> being fired.
>
> As far as i understand, I am doing a declaration to set refBP1 an object
> attribute to BP1, which i later use.What is that i am missing here? My
> fact
> has proper getter and setters for refBP1 attribute.
>
>
>
> Thanks
>
> Natraj
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
--
Dr. Gernot Starke
Willi-Lauf Allee 43, D-50858 Köln
Tel. +49 (0) 177 - 728 2570
Mail: gs(a)gernotstarke.de
http://www.gernotstarke.de
http://www.arc42.de
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
4:06 p.m.
Hi Natraj,
In your particular case I think the problem is caused by a cross-product setting in
Drools.
I think, in older versions two patterns using the same Object type, expect it to be the
same (by reference) whereas in newer versions (by default) the objects are different.
I think there might be a setting to control this behaviour (in the older version). Edson,
Mark - I can't remember the specifics. Any ideas to avoid a search of the newsgroup?
Lots of thinking!
With kind regards,
Mike
________________________________
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On
Behalf Of Natraj Gudla
Sent: 18 July 2007 14:54
To: gs(a)gernotstarke.de; Rules Users List
Subject: Re: [rules-users] Another problem
Hi Starke,
Thanks a lot for your inputs. Apart from being able to debug using your stuff, my main
concern is that a simple declaration is making the rule not to fire. Why is that so?
I am pretty sure, when i remove that particular line the fact which is passed passes the
condition.
The Drools documentation has a clear example which does the same.
Any help in this regard will highly be appreciated.
Thanks
Natraj
On 7/18/07, Dr. Gernot Starke <gs(a)gernotstarke.de> wrote:
Hi Natraj,
I wrote up a few tactics to (successfully) debug rules:
http://rbs.gernotstarke.de/faq/faq/faq-devel.html
It's neither finished nor complete - but try it out...
(test both conditions with one rule for each of them,
test for the existence of the appropriate facts,
include a catchall-rule which prints all facts from wm.)
regards,
Gernot
Hi, I am using Drools 3.0.6, and facing a peculiar problem.
My rule:
*
rule* "Calculate Business profit,1"*
**salience* 1000
*when
**EMIAgainstProperty ( BP1 : refBP1 )
*emi : EMIAgainstProperty ( businessProfit2 > BP1 )
*then* *
*System.out.println(" BP "+( emi.getBusinessProfit1
()+emi.getBusinessProfit2())/2);*
*emi.setBusinessProfit((emi.getBusinessProfit1
()+emi.getBusinessProfit2())/2);*
**end*
**
The above line in bold inside the condition part seem to create problem
for
rule evaluation. WHen i have this, the rule does not show up in the Agenda
view, hence i dont see the console print in the action part. As soon as i
remove this line and replace BP1 with 1.5 in the second line, i see the
rule
being fired.
As far as i understand, I am doing a declaration to set refBP1 an object
attribute to BP1, which i later use.What is that i am missing here? My
fact
has proper getter and setters for refBP1 attribute.
Thanks
Natraj
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
--
Dr. Gernot Starke
Willi-Lauf Allee 43, D-50858 Köln
Tel. +49 (0) 177 - 728 2570
Mail: gs(a)gernotstarke.de
http://www.gernotstarke.de
http://www.arc42.de
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
2:01 p.m.
New subject: Problem with Student - module example
Given:
Student.java
public class Student {
private String name;
private ArrayList modules = new ArrayList();
...
}
Module.java
public class Module {
private String name;
private Student student;
private int score;
...
}
Rule:
exists( $student : Student() && Module( student == $student && score >
40 ) )
Problem statement:
I assert 2 Students and 2 modules in the session
Student s = new Student(), s1 = new Student();
Module m = new Module(), m1 = new Module();
m.setName("English"); m.setStudent(s); m.setScore(10);
s.setName("abc"); s.addModule(m);
m1.setName("English1"); m1.setStudent(s1); m1.setScore(50);
s1.setName("xyz"); s1.addModule(m1);
workingMemory.insert(m);
workingMemory.insert(s);
Result:
I get 2 activations. I am expecting only 1 activation as only xyz
student has score > 40
Am I missing something or is this a bug?
Rgds,
rajeev
3:06 p.m.
New subject: Problem with Student - module example
I assume you also insert s1 and m1 to working memory?
What if you re-write the rule as two patterns (there is an implicit AND
between patterns)
Rule:
$student : Student()
Module( student == $student && score > 40 ) )
With kind regards,
Mike
-----Original Message-----
From: rules-users-bounces(a)lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Dave, Rajeev
Sent: 20 August 2007 13:02
To: Rules Users List
Subject: [rules-users] Problem with Student - module example
Given:
Student.java
public class Student {
private String name;
private ArrayList modules = new ArrayList();
...
}
Module.java
public class Module {
private String name;
private Student student;
private int score;
...
}
Rule:
exists( $student : Student() && Module( student == $student && score >
40 ) )
Problem statement:
I assert 2 Students and 2 modules in the session
Student s = new Student(), s1 = new Student();
Module m = new Module(), m1 = new Module();
m.setName("English"); m.setStudent(s); m.setScore(10);
s.setName("abc"); s.addModule(m);
m1.setName("English1"); m1.setStudent(s1); m1.setScore(50);
s1.setName("xyz"); s1.addModule(m1);
workingMemory.insert(m);
workingMemory.insert(s);
Result:
I get 2 activations. I am expecting only 1 activation as only xyz
student has score > 40
Am I missing something or is this a bug?
Rgds,
rajeev
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
11:28 a.m.
New subject: Problem with Student - module example
Yes, I am inserting s1 and m1 as well. I missed it in my post.
I completely agree with your approach. However, the intent of my example
was to understand the functionality of "exists" keyword
Rgds,
rajeev
-----Original Message-----
From: rules-users-bounces(a)lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Anstis,
Michael (M.)
Sent: Monday, August 20, 2007 6:36 PM
To: Rules Users List
Subject: RE: [rules-users] Problem with Student - module example
I assume you also insert s1 and m1 to working memory?
What if you re-write the rule as two patterns (there is an implicit AND
between patterns)
Rule:
$student : Student()
Module( student == $student && score > 40 ) )
With kind regards,
Mike
-----Original Message-----
From: rules-users-bounces(a)lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Dave, Rajeev
Sent: 20 August 2007 13:02
To: Rules Users List
Subject: [rules-users] Problem with Student - module example
Given:
Student.java
public class Student {
private String name;
private ArrayList modules = new ArrayList();
...
}
Module.java
public class Module {
private String name;
private Student student;
private int score;
...
}
Rule:
exists( $student : Student() && Module( student == $student && score >
40 ) )
Problem statement:
I assert 2 Students and 2 modules in the session
Student s = new Student(), s1 = new Student();
Module m = new Module(), m1 = new Module();
m.setName("English"); m.setStudent(s); m.setScore(10);
s.setName("abc"); s.addModule(m);
m1.setName("English1"); m1.setStudent(s1); m1.setScore(50);
s1.setName("xyz"); s1.addModule(m1);
workingMemory.insert(m);
workingMemory.insert(s);
Result:
I get 2 activations. I am expecting only 1 activation as only xyz
student has score > 40
Am I missing something or is this a bug?
Rgds,
rajeev
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
_______________________________________________
rules-users mailing list
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https://lists.jboss.org/mailman/listinfo/rules-users
6115
days inactive
6149
days old
6 comments
4 participants
participants (4)
-
Anstis, Michael (M.) -
Dave, Rajeev -
Dr. Gernot Starke -
Natraj Gudla