thank you.

From: Wolfgang Laun-2 [via Drools] <[hidden email]>
To: wendy <[hidden email]>
Sent: Wednesday, August 10, 2011 1:31 PM
Subject: Re: [rules-users] Collect with same value

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 <[hidden email]> 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

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