[rules-users] Drools Activation Group

[Java Bean]

Hello Drools Experts,

I have a question on activation group and trying to understand the
mechanism.

I have the following rules in a .drl file :

import function com.test.utils.StringUtil.isEmpty;
import function com.test.utils.Logger.log;

rule "r1"
  salience 10
  activation-group "fireOnlyOnce"
  when
     SomeObject($s: someStringKey)
     eval(isEmpty($s) // static java method imported as function
  then
      log("doSomething");
end

rule "r2"
  activation-group "fireOnlyOnce"
  when
     SomeObject($s: someStringKey)
     eval(checkWithDB($s) // Make a call to the DB to validate
someStringKeyis valid
  then
      log("doSomething");
end

In "r1" I am checking for 'someStringKey' is not null or empty. In "r2" , I
am making a call to the DB to check 'someStringKey' is a valid id. During
the debug, I found out that both "r1" and "r2" is fired but only one
consequence is executed depending on the outcome of the r1. I want "r2" to
fire only when "r1" evaluates to false. How can I achieve this in Drools?

Thanks for your time and appreciate your help.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.jboss.org/pipermail/rules-users/attachments/20111129/20528df8/attachment.html