[rules-users] Arithmetic operator in Condition part (Argent help.....)

[Noc2]

Nikhil_dev wrote:
> 
> hi!!, Andy,
> i didn't get wat do u mean by Shadowing any ways i am 4 days old to
> Drools....so not much idea about it.
> if u knw how to update()... pls let me knw in the action part
> regards,
> nikhil
>  
> 
> 

hi there. 
I am pretty new to drools as well, but i think i can give u an answer to you
update question. 

In your case, you have the following:   $a : ApplyRuleBean()
Suppose that ApplyRuleBean's attribute childFare has a value of 100. (i dont
know any specifics of your code, so this is just theoretical). 

In the Right Hand Part of your rules, you change the value from 100 to, lets
say 200. Then you can use the keyword update(), like this: update($a). When
u call update, you are letting drools know that a 'fact' (in this case $a )
has been modified, and you want drools to re-process this fact. In other
words, the fact will be 'evaluated' again by all rules which apply on it. 

I hope this was a bit clear. If not, feel free to ask. I ll try harder then
:). 

regards, 
Noc2
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