First, you bind to the contained object, and then you locate the containing
object.
(defrule mydoor
?door <- (Door (weight ?weight)(color ?color))
(House (myDoor ?door)(owner "Mick"))
=>
(printout t "Weight of Mick's door :" ?weight crlf)
)
Restrictions on weight or color, e.g., to paint red doors black ;-) can be
added in the usual way.
-W
On Fri, Aug 21, 2009 at 12:12 PM, Romain Van der Keilen <
[email protected]> wrote:
> Hi there,
>
> I have a little question for you I can't fix by myself: how to access the
> fields of a java Object that is itself a field of an other java object?
> Here is a tiny sample :
>
> Object Door
> + int weight
> + String color
>
> Object House
> + Door myDoor
>
> Now I give the House to the Rete engine, how can I access (and manipulate)
> for example the weight of my door?
>
> By now I just can display it like this:
> (defrule mydoor
> (House (myDoor ?myDoor))
> =>
> (printout t "Weight of my house's door :" ?myDoor.weight crlf)
> )
> But the thing I want to do is to catch that weight to make some checks on
> it, then displaying the checks' results (for examples, is my door heavier
> than 25kg).
>
> Thanks for help
>
> Romain Van der Keilen
>
>
>
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