[rules-users] having counter in drl

[techy]

Thanks all for the reply.
I executed following rules after adding Event fact id ranges from 1 to 8.
Output is given below. counter rule was not executed for distinct event
fact. some help please.

output :
-----------------------------
adding counter
new count value: 4 , event : 8
new count value: 3 , event : 7
new count value: 2 , event : 8
new count value: 1 , event : 7
-------------------------------

rule "init"
lock-on-active true
when
	then
		System.out.println("adding counter");
			Counter c = new Counter(4);// init with max count value
			insert(c);
		
end

rule "counter"
no-loop true
	when 
	event : Event()
	counter : Counter(count > 0)
	then
	System.out.println("new count value: "+counter.getCount()+" , event :
"+event.getEventId());
	counter.setCount(counter.getCount()-1);
	update(counter);
end




dave sinclair wrote:
> 
> Make counter an object
> 
> when
>     $counter : Counter(value <= 100)
> ...
> 
> 
> On Mon, Dec 8, 2008 at 5:05 PM, techy <techluver007 at gmail.com> wrote:
> 
>>
>> Hello,
>> I would like to take 100 sampling facts for rule and persist it in the db
>> and ignore other data.
>> How Can I maintain the counter? as global variable? Please clarify with
>> sample code.
>> I tried following way and but it does not work as expected.
>>
>> Ex:
>> global Integer counter;
>> rule "get sampling data"
>>   when fact : Foo(some condition) && eval(counter <= 100)
>>   then
>>    counter++
>>   // do some condition
>> end
>> --
>> View this message in context:
>> http://www.nabble.com/having-counter-in-drl-tp20904469p20904469.html
>> Sent from the drools - user mailing list archive at Nabble.com.
>>
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>> rules-users at lists.jboss.org
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>>
> 
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> 

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