The simplest thing you could do is store all your definstanced objects
in a lookup table of some kind: a Java Hashtable, or the Jess (bag)
function. Use either the 'name' or the object itself as the key -
whatever you'll use to look them up. Then just retrieve them from the
table and set the properties at will. You could write 'warapper'
functiosn for definstance and undefinstance ("my-definstance") which
automatically stuck each definstanced object into the table.
I think S.S. OZSARIYILDIZ wrote:
>
> Hi,
>
> I want to change my objects attribute values in deffunction. For
> instance in the pump example it is written as a rule but what I want is
> to have a deffunction to modify that object's attributes a simple
> example is given. I wonder how i should modify it to get it work.
>
> thanks.
>
> (deffunction _modify (?oblect ?name ?slot ?value)
> (if (eq ?object "pump") then
> (pump (name ?name) (OBJECT ?pump)) ;;find the pump fact with the
> required pump name
> (set ?pump ?slot ?value) ;;and set the
> slot with required value
> ))
>
> somewhere in a rule
>
> (_modify "pump" "pump1" flow 5)
>
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Ernest Friedman-Hill
Distributed Systems Research Phone: (925) 294-2154
Sandia National Labs FAX: (925) 294-2234
Org. 8920, MS 9214 [EMAIL PROTECTED]
PO Box 969 http://herzberg.ca.sandia.gov
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