Please do not use this list for simple questions - it is reserved for discussion Drools development itself.

(1) The "exists(Account)" is superfluous; existence is implied by the match in the next Conditional Element.
(2) The rule should match once and only once for each Account fact inserted into Working Memory.

Reading the Drools Expert documentation might clarify this and more for you.

-W



On 1 March 2011 09:53, pchenna <prashanth.sc@gmail.com> wrote:
I have a rule while calls doMenu to display options and modify data
accordingly.But why this rule is getting called only once even thought
"WHEN" condition is matching.Isn't it should be called every-time condition
matches?

rule "Check trans"
       dialect "java"
       when
               exists(Account())
           $account :Account()
       then
               doMenu($account,drools.getWorkingMemory());

end

rule "Credit"
#some code here
end rule

rule "Debit"
#some code here
end rule


function void doMenu(Account account,WorkingMemory wm) {

       String option = "1";
       //while(!option.equalsIgnoreCase("3")){

       option = JOptionPane.showInputDialog("1.Debit \n" +
                                               "2.Credit \n" +
                                               "3. Exit");

       if(option.equalsIgnoreCase("1")){

               String amount  = JOptionPane.showInputDialog("Enter Amount to be
Debited");
               double amt = Double.parseDouble(amount);
               Transaction t = new Transaction ( account, amt, Transaction.DEBIT);
               wm.insert(t);


       }else if(option.equalsIgnoreCase("2")){

               String amount  = JOptionPane.showInputDialog("Enter Amount to be
Credited");
               double amt = Double.parseDouble(amount);
               Transaction t = new Transaction ( account, amt, Transaction.CREDIT);
               wm.insert(t);
       }

//}
}

Sorry if this question is very naive,tried searching in forums and couldn't
find anything helpful.

--
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