rule "get big shapes by color"
when
$map: Map()
from accumulate ( $shape: Shapes( $color: color, size > 5 ),
init( Map m = new HashMap(); ),
action( List list = m.get( $color );
if( list == null ) list = new ArrayList();
list.add( shape ); ),
result( m ) )
then
// process $map to get all lists of same color
end
Untested.
-W
On 10 August 2011 17:20, wendy <[email protected]> wrote:
> Hi,
> I'm trying to write the following rule but am having some trouble.
>
> We have a object say Shape and which has attributes size and color. I
> want to get a list of all shapes with the same color that have size > 5.
> How can I make sure the color is the same for all objects in the collect
> without having different rules for 'red', 'green'...?
>
> Thank you,
> Wendy
>
>
> --
> View this message in context:
> http://drools.46999.n3.nabble.com/Collect-with-same-value-tp3242904p3242904.html
> Sent from the Drools: User forum mailing list archive at Nabble.com.
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