[rules-users] Iterating two collection in LHS

[techy]

Thanks Edson.

Is there way to find City() where if least one unlucky male is found using
current object structure.


Edson Tirelli-3 wrote:
> 
>    You should really insert your males and females into your working
> memory
> instead of having them as nested lists only. Anyway:
> 
> rule "unlucky male"
> where
>     $c : City()
>     $m : Male( $age : age ) from $c.maleList
>     not( Female( age ==$age ) from $c.femaleList )
> then
>      // $m is unlucky, no female with the same age
> end
> 
>    []s
>    Edson
> 
> 
> 2009/2/2 techy <techluver007 at gmail.com>
> 
>>
>> Hello,
>>
>> Please help me to implement following rule in drool. I could not find a
>> way
>> to iterate two collection using accumulate or collect in LHS.
>>
>> public Male{
>>  int age;
>>  //other fields
>>
>> }
>>
>> public Female{
>>  int age;
>>  //other fields
>>
>> }
>> public City{
>>
>>  private List<Male>  maleList;
>>  private List<Female> femaleList;
>>
>> }
>>
>> #Rule to get all Male whose age != any of female's
>> rule "Get Unlucky Male"
>> when
>>        city : City()
>>        maleList : ArrayList() from collect ( Male( his age = any of
>> Female's age  from city.femaleList  ) from city.maleList)
>> //consequence
>> end
>> --
>> View this message in context:
>> http://www.nabble.com/Iterating-two-collection-in-LHS-tp21796713p21796713.html
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>>
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>>
> 
> 
> 
> -- 
>  Edson Tirelli
>  JBoss Drools Core Development
>  JBoss, a division of Red Hat @ www.jboss.com
> 
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> 
> 

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