[rules-users] A Simple Rule ( using Guided editor )

[Przemysław Różycki]

Ashish Soni pisze:
> Hi All ,
> 
> I am just trying to write a simple rule but not sure how can i write it 
> , Please help me as i am new to drools and still in the learning phase .
> 
> I have a below Fact  with three fields
> 
> Person
> 
>     firstName
>     lastName
>     fullName
> 
> 
> Now i want to assign fullName = firstName + lastName which i am not able 
> to find out how can i do that.
> 
> I am able to define the *when *part using guided editor but able to 
> define *then *part , Please help 
> 
> *rule "PersonRules"
>     dialect "mvel"
>     when
>         p : Person( firstName != "" && lastName != "" )
>     then*
> 
> Thanks,
> Ashish
> 

What about just:

rule "PersonRules"
      dialect "mvel"
      when
          p : Person( firstName != "" && lastName != "" )
      then
          modify(p) {
              fullName = p.firstName + p.lastName
          }
?

Consider also using no-loop attribute in such a rule.

Best regards,
Przemek