Re: [rules-users] Sir, Seekin your's Help on Drool

[Mark Proctor]

On 18/04/2012 11:49, Michael Anstis wrote:


Emailed me directly too... some people do nothing to help themselves.


me too..

Mark


sent on the move

On 18 Apr 2012 11:20, "Wolfgang Laun" > wrote:


San,

(1) Do NOT post the same thing four times.

(2) Do NOT start with decision tables. After one month you should be
able to write a simple rule in DRL.

(3) Do NOT post questions without providing sufficient context.  is
maturityAge a field of PremiumCalculatorFormBean? Why do you define
this function getMaturityAge? How is it defined?

(4) Do NOT say that there is an error unless you show sufficient
context. You do not pass "pp" to any function in the code you show -
so what's the point in saying "not able to find" etc.

(5) Use the list, do NOT email me directly. I answer the list if I
have the time.

-W


On 18/04/2012, Sangram Jethy mailto:sangram...@gmail.com>> wrote:
> Hi
>
> I am a student who recently working as a java developer on
drools.I have
> been going thru drools over last one month.
>
> Nw I hav a couple of doubt...i am struck pz reply me if u
cud find time
> out of yr busy schedule...
>
> I am trying to cal a local function getMaturityAge()  in the
decision table
> condition column like
>
> RuleTable MaturityAge Validation
> CONDITION
> ACTION
> pp:PremiumCalculatorFormBean
> getMaturityAge() >  "$1"
>  System.out.println("invalid maturity age");
> Premium Payment Term   Print out
> message?
> 70  
X

>
> The method is defined localy using functions key word.
> This is showing error in function line is .. getMaturityAge() >
>  "$1"..
> And moreover whenever I trying to pass pp as the argument to my
functions,
> its not able to find pp. I am getting  cud not parse knowledge
error.
> Pz tel me how to make it work...
>
> Also pz suggest some extensive reading material for rules both
in( ddr and
> decision table format ). I am also goin thru d documentation n
Mr Paul
> Brown book. But i cudnt find more on using decision table and
its syntax.
> Pz suggest me on dat.
>
>
> Tnks n Regards
>
> Sangram Jethy (San)
>
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Re: [rules-users] Sir, Seekin your's Help on Drool

[Welsh, Armand]

As the others have stated, without some actual rules it is very difficult, if 
not near impossible to provide help. 

Inferring what you might be trying to do, here is an example of what I *think* 
you are trying to do:

CONDITION
$pp: PremiumCalculatorFormBean ( )
$maturity: Integer ( ) from getMaturityAge($pp)
eval ( $maturity > 70 )

For this to work, you should change your Drools function to return Integer 
object.

Drawing further assumptions form your function, which is always going to return 
0 as you have it written here, I will assume that age and premiumPaymentTerm 
are properties of PremiumCalculatorForBean class, you could do the same this 
without the function call like this:

CONDITION
PremiumCalculatorFormBean ( $age: age, $term : premiumPaymentTerm)
eval ( ($age + $term) > 70 )

or

CONDITION
$pp: PremiumCalculatorFormBean ( )
eval ( ($pp.age + $pp.premiumPaymentTerm) > 70 )

the difference is really just preference, and personal style.  
In the first example you capture the age and term into separate variable, and 
then you perform the math on those two varaibles.  In the second pp is 
capturing the PremiumCaclulatorFormBean object and the math is done on 
properties of that object.

In both examples, if you have two PremiumCalculatorFormBean objects in working 
memory, then this rule will fire twice, unless you use some control mechanism 
to force them to only fire once.

I hope this helps.  I suspect it may be on the right track, or at least let you 
see the proper syntax for define the LHS conditional constraints.

Armand

-Original Message-
From: rules-users-boun...@lists.jboss.org 
[mailto:rules-users-boun...@lists.jboss.org] On Behalf Of San
Sent: Wednesday, April 18, 2012 5:24 AM
To: rules-users@lists.jboss.org
Subject: Re: [rules-users] Sir, Seekin your's Help on Drool

pp:PremiumCalculatorFormBean (fact in this case) contains 2 int fields age
and premiumPaymentTerm.

I need to validate (age+premiumPaymentTerm) sud nt b >70.

So in 1st condition column  i am calling a method 
 int getMaturityAge(pp) {
  int maturityAge=0;
  int age=0;
  int premiumPaymentTerm=0;
  maturityAge=age+premiumPaymentTerm;
 return maturityAge;
}

In the condition I write,  maturityAge(pp) > "$1" and provide 70 as the
param value.

Nw the error that I am gettin...

1) while writing the above condition , it is unable to resolve pp.
no viable alternative at input 'pp' in rule "MaturityAge
Validation_38"

2) for testing purpose I call this method without any argument and returning
90.
In his case also I am getting 

  ...no viable alternative at input ')' in rule "MaturityAge
Validation_38"
 ...mismatched input '>' expecting ')' in rule "MaturityAge
Validation_38"

In Action part I have put System.out.println("Maturity value sud be less
than 70 ")


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Re: [rules-users] Sir, Seekin your's Help on Drool

[Vincent LEGENDRE]

You said that you will stick to the norms here but you do the opposite in your 
post : Where are the rules ?

As far I can guess from all you wrote so far, the errors you have are all 
easily fixable by reading the very basis of drools doc, like what is a field 
constraint, how to specify it and how it is transformed (this will explain why 
your "maturityAge(pp) > "$1"" has no chance to work).

The errors "mismatched input" or "cannot find ..." are basic errors that are 
theorically fixed as soon as you have the DRL under your eyes...

If you have read the doc, you know that a decision table is a way to write 
rules templates, and it finally generates some DRL (the only executable format 
for drools). Decision table design and debug cannot be done without a close 
analysis of produced drl code. The consequence of that is "if you can't write a 
simple DRL that do the job, you won't be able to do the same with a decision 
table".

So, start by getting the generated DRL, fix it, then go back to your decision 
table and fix it accordingly.

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Re: [rules-users] Sir, Seekin your's Help on Drool

[San]

pp:PremiumCalculatorFormBean (fact in this case) contains 2 int fields age
and premiumPaymentTerm.

I need to validate (age+premiumPaymentTerm) sud nt b >70.

So in 1st condition column  i am calling a method 
 int getMaturityAge(pp) {
  int maturityAge=0;
  int age=0;
  int premiumPaymentTerm=0;
  maturityAge=age+premiumPaymentTerm;
 return maturityAge;
}

In the condition I write,  maturityAge(pp) > "$1" and provide 70 as the
param value.

Nw the error that I am gettin...

1) while writing the above condition , it is unable to resolve pp.
no viable alternative at input 'pp' in rule "MaturityAge
Validation_38"

2) for testing purpose I call this method without any argument and returning
90.
In his case also I am getting 

  ...no viable alternative at input ')' in rule "MaturityAge
Validation_38"
 ...mismatched input '>' expecting ')' in rule "MaturityAge
Validation_38"

In Action part I have put System.out.println("Maturity value sud be less
than 70 ")


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Re: [rules-users] Sir, Seekin your's Help on Drool

[Sangram Jethy]

 Hi

Thnks for writing to me.

I am new to this forum.I have indeed noted down your suggestion and I wll
definitely act on it. I have gone thru the documentations and few books and
have been trying hard to lean and implement since I have to deliver it as
well.

I could not find the solution after trying hard. So have to put it here
desperately. Sorry again if I have broken the norms.


Regards
San
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Re: [rules-users] Sir, Seekin your's Help on Drool

[Michael Anstis]

Emailed me directly too... some people do nothing to help themselves.

sent on the move

On 18 Apr 2012 11:20, "Wolfgang Laun"  wrote:

> San,
>
> (1) Do NOT post the same thing four times.
>
> (2) Do NOT start with decision tables. After one month you should be
> able to write a simple rule in DRL.
>
> (3) Do NOT post questions without providing sufficient context.  is
> maturityAge a field of PremiumCalculatorFormBean? Why do you define
> this function getMaturityAge? How is it defined?
>
> (4) Do NOT say that there is an error unless you show sufficient
> context. You do not pass "pp" to any function in the code you show -
> so what's the point in saying "not able to find" etc.
>
> (5) Use the list, do NOT email me directly. I answer the list if I
> have the time.
>
> -W
>
>
> On 18/04/2012, Sangram Jethy  wrote:
> > Hi
> >
> > I am a student who recently working as a java developer on drools.I have
> > been going thru drools over last one month.
> >
> > Nw I hav a couple of doubt...i am struck pz reply me if u cud find
> time
> > out of yr busy schedule...
> >
> > I am trying to cal a local function getMaturityAge()  in the decision
> table
> > condition column like
> >
> > RuleTable MaturityAge Validation
> > CONDITION
> > ACTION
> > pp:PremiumCalculatorFormBean
> > getMaturityAge()   >  "$1"
> >  System.out.println("invalid maturity age");
> > Premium Payment Term   Print out
> > message?
> > 70
> X
> >
> > The method is defined localy using functions key word.
> > This is showing error in function line is .. getMaturityAge()   >
> >  "$1"..
> > And moreover whenever I trying to pass pp as the argument to my
> functions,
> > its not able to find pp. I am getting  cud not parse knowledge error.
> > Pz tel me how to make it work...
> >
> > Also pz suggest some extensive reading material for rules both in( ddr
> and
> > decision table format ). I am also goin thru d documentation n Mr Paul
> > Brown book. But i cudnt find more on using decision table and its syntax.
> > Pz suggest me on dat.
> >
> >
> > Tnks n Regards
> >
> > Sangram Jethy (San)
> >
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Re: [rules-users] Sir, Seekin your's Help on Drool

[Wolfgang Laun]

San,

(1) Do NOT post the same thing four times.

(2) Do NOT start with decision tables. After one month you should be
able to write a simple rule in DRL.

(3) Do NOT post questions without providing sufficient context.  is
maturityAge a field of PremiumCalculatorFormBean? Why do you define
this function getMaturityAge? How is it defined?

(4) Do NOT say that there is an error unless you show sufficient
context. You do not pass "pp" to any function in the code you show -
so what's the point in saying "not able to find" etc.

(5) Use the list, do NOT email me directly. I answer the list if I
have the time.

-W


On 18/04/2012, Sangram Jethy  wrote:
> Hi
>
> I am a student who recently working as a java developer on drools.I have
> been going thru drools over last one month.
>
> Nw I hav a couple of doubt...i am struck pz reply me if u cud find time
> out of yr busy schedule...
>
> I am trying to cal a local function getMaturityAge()  in the decision table
> condition column like
>
> RuleTable MaturityAge Validation
> CONDITION
> ACTION
> pp:PremiumCalculatorFormBean
> getMaturityAge()   >  "$1"
>  System.out.println("invalid maturity age");
> Premium Payment Term   Print out
> message?
> 70   X
>
> The method is defined localy using functions key word.
> This is showing error in function line is .. getMaturityAge()   >
>  "$1"..
> And moreover whenever I trying to pass pp as the argument to my functions,
> its not able to find pp. I am getting  cud not parse knowledge error.
> Pz tel me how to make it work...
>
> Also pz suggest some extensive reading material for rules both in( ddr and
> decision table format ). I am also goin thru d documentation n Mr Paul
> Brown book. But i cudnt find more on using decision table and its syntax.
> Pz suggest me on dat.
>
>
> Tnks n Regards
>
> Sangram Jethy (San)
>
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