How to use conditional logic ( or a NOT ! Operator) in a Drools Guided rule?

[james....@gmail.com]

All,

Am using Drools Workbench 6.2.0.Final to declaratively create Guided Rules...

My situation is something like this:

Have a Loan Data Object with the following attributes:

- state - String

- amount - double 

- interestRate - double

- message - String

- requirement - boolean

The auto-generated drl file is:

rule "Arizona"

when

loan : Loan( state == "Arizona" , amount >= 1000 , amount <= 3000 , interestRate >= 0.15 , interestRate <= 0.50 )

then

loan.setRequirement( true );

end

Question(s):

(1) How can I declaratively use the Guided Rules Editor to set the following when this rule fails:

loan.setMessage( "Allowed values for amount should be in the range of 1000 to 3000"); 

or 

loan.setMessage( "Allowed values for interest rate values should be in the range of 15% to 50%" );

(2) Is there a way to declaratively customize the response:

e.g.

either return:

<requirement>true</true>

or 

<requirement>false</requirement>

<message>Allowed values for amount should be in the range of 1000 to 3000</message>

or

<requirement>false</requirement>

<message>Allowed values for interest rate values should be in the range of 15% to 50%</message>

Thanks to all... 

[Toni Rikkola]

I would split the rule into two. One rule checks the amount and reports that, then the other does the same for interest rate.

Toni

[Michael Anstis]

You could also consider using a Gudied Template or Guided Decision Table rather than a Guided Rule.

Either of the other types would allow you to use parameters in the RHS of the rule(s) such as-

Rule

when

...

then

loan.setRequired(@{1}, "@{2}" );

end

Data

true,

false, Not allowed 

On 9 October 2015 at 08:45, Toni Rikkola <toni.r...@gmail.com> wrote:

I would split the rule into two. One rule checks the amount and reports that, then the other does the same for interest rate.

Toni

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