[rules-users] Attribute comparison thru decision table

[Wolfgang Laun]

If you look at the decision table examples in the Drools documentation
you'll see that decision tables don't fit the pattern you have posted.

But you can rules to do what you want, and you'll need one rule for
each comparison if a distinct action is to be performed for each
inequality.

-W

On 18/02/2014, bala.ganesh at accenture.com <bala.ganesh at accenture.com> wrote:
> Hi,
>
> I have a requirement to compare attributes in two objects(Object1 Vs.
> Object2) and store the values based on business rule in object 3.
> Example rules:
>
>                 If (Obj1.atrr1 != Obj2.atrr1)
>                  Then Obj3.attr1 = Obj2.atrr1
>
>                 If (Obj1.atrr2 != Obj2.atrr2)
>                  Then Obj3.attr2 = Obj1.atrr2
>
>                 If (Obj1.atrr3 - Obj2.atrr3 > 10)
>                  Then Obj3.attr3 = Obj1.atrr3
>
> We are planning to use decision table for this to avoid a separate GUI
> development.
> Would like to know whether writing rule for each attribute is the only
> solution or is there any simpler approach?
>
>
> Thanks in advance,
> -Bala
>
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