[jboss-jira] [JBoss JIRA] Commented: (JBRULES-1121) Operator field and the fact's variable field required in the "then" part of the rule

[sreeni sabapathy (JIRA)]

    [ http://jira.jboss.com/jira/browse/JBRULES-1121?page=comments#action_12373928 ] 
            
sreeni sabapathy commented on JBRULES-1121:
-------------------------------------------

Thank you for the quick response.

"=" would do the calculation, but calculation is based on values of other variables.

Here the rule itself does the calculation for the S.I, that is 

SI = P*T*R/100

writing the above in drools 3.0 it would be

then

m.setSimpleInterest(m.getPrinciple()*m.getTime()*m.getRate()/100);

While considering the drools-jbrms, I am not able to look up the values of other variables in "then" part, 

presently the calculation written in drools-jbrms is just 

SI =100*6*5/100;

but I wanted to have it as 

SI = P*T*R/100; 

The above can be achieved through the option "Bussiness rule through dsl(text editor)". As jbrms is defined for not technical user ( Bussiness user ) I would appreciate if above facility is avaliable in "Bussiness rule (using guided editor)".


> Operator field and the fact's variable field required in the "then" part of the rule
> ------------------------------------------------------------------------------------
>
>                 Key: JBRULES-1121
>                 URL: http://jira.jboss.com/jira/browse/JBRULES-1121
>             Project: JBoss Rules
>          Issue Type: Feature Request
>      Security Level: Public(Everyone can see) 
>          Components: Eclipse IDE, drools-brms
>    Affects Versions:  4.0.0.GA
>         Environment: drools-jbrms stand alone and Eclipse drools-4.0.0 
>            Reporter: sreeni sabapathy
>         Assigned To: Michael Neale
>            Priority: Minor
>             Fix For: FUTURE
>
>   Original Estimate: 10 minutes
>  Remaining Estimate: 10 minutes
>
> In the drools-jbrms standalone and even in the eclipse plugin version of "New guided drl file"
> the "then" part of the rule has the limitation of assigning the fixed value to the fact's variable.
> But in many condition the the value of the variable depends upon the value of another variable.
> I have taken  a simple example for explanation.
> For calcluating simple interest
> SI = P*T*R/100
> Now in the rule file if the 
> "when" condition as the check of " Calcluation type (simple ineterst or compound interest)"
> "then" part having SI, 
> At the present drool-jbrms definition the 
> "then" part has SI = text field.
> But my requirement is to look up the class variable "principle", "Time" and the "Rate" and then calculate, not just 
> assign some fixed values.
> In a simple sentence I would appreciate if the drools- jbrms has the options related to  "when" in the "then" part of the rule also.

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