[rules-users] Testing the count of a pattern binding variable

[David R Robison]

Yes, I was just wondering if I could use a pattern binding variable 
instead of a pattern. I guess I cannot. David

David R Robison
Open Roads Consulting, Inc.
103 Watson Road, Chesapeake, VA 23320
phone: (757) 546-3401
e-mail: drrobison at openroadsconsulting.com
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On 2/19/2013 7:02 AM, Wolfgang Laun wrote:
> There's a minor problem with the syntax
>
> On 19/02/2013, Stephen Masters <stephen.masters at me.com> wrote:
>> Assuming that you don't have an infinite variety of accumulations you're
>> trying to use, something I have done previously is to create DRL technical
>> rule to generate accumulated values, which the DSL then uses as
>> constraints.
>>
>> i.e.
>>
>> rule "Generate sensor counts"
>> when
>> 	$sensor : Sensor()
>> 	accumulate($sensor; $count:count(1); $count >3)
>      // need a Pattern up front, not a binding variable
>      accumulate( Sensor();  $count:count(1); $count >3)
>
>> then
>> 	insert(new SensorCount($count));
>     // it might be necessary to write
>     insert( new SensorCount( $count.intValue() ) );
>
> What was the original problem? ;-)
> -W
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