You mean like an "instanceof" test?
(defrule do-if-jb2
(JB1 (some-slot ?x&:(instanceof ?x com.whatever.JB2)))
=>
...
On Jul 26, 2009, at 5:57 PM, [email protected] wrote:
Dear JESS users and devs,
I have to write a group of rules dealing with nested
java beans. The (simplified) scenario is the following:
1) let's suppose I
have three Java beans: JB1, JB2 and JB3; both JB2 and JB3 can be
slots of JB1;
JB2 and JB3 have normal slots (with different data types but without
other
nested Java beans)
2) I also have proper templates, created on the basis of the
corresponding java beans (declare jb1 from-class ...)
3) the shadow facts have
been added to the working memory using (definstance ...)
Now I have to write a
rule in order to activate something if JB1 has JB2 as slot and
something else
on the other case. How can I implement the matching between the slot
of JB1 and
the template of JB2 and JB3? Calling "equals" method doesn't work....
In other
words, at this level I have to verify only which Java bean is a slot
of JB1
without considering the slots of JB2 and JB3
Is there another way to do that?
Thanks in advance for your replies.
Marco Zappatore
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Ernest Friedman-Hill
Informatics & Decision Sciences, Sandia National Laboratories
PO Box 969, MS 9012, Livermore, CA 94550
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