I discovered the problem. Somehow, jess doesn't like the comparisson
like { name == "Area_1"}, but instead if I use (name /Area_1/) it works.
This sounds very weird because for only one line comparison it works,
but to subsequent lines doesn't. I mean:
(defrule
(Area {name=="area1"}(OBJECT ?Area1))
=>
it works. But if I make this
(defrule
(Area {name=="area1"}(OBJECT ?Area1))
(Area {name=="area2"}(OBJECT ?Area2))
=>
doesn't. Now if I use this
(Area (name /area1/)(OBJECT ?Area1)
(Area (name /area2/)(OBJECT ?Area2)
=>
it works just fine. Strange but it happens.
Dusan Sormaz wrote:
Joao,
can you show the complete rule? Your code snippet is missing a
parenthesis at the end of the first Area line.
Also when you say: "it is not working" it is not enough to understand
the possible error. show either error messages or explain what is
shown, for example, does error show when you load (compile) rules, or
when you try to run them.
Dusan Sormaz
At 05:39 AM 4/1/2008, you wrote:
Hello,
My question is about if it is possible to assign the same class of
objects several times in the same rule. I mean, let say i have a class
"Area" and I have multiple facts containing objects of the class "Area"
in the working memory. Can I do something like this:
(defrule
(Area {name=="area1"}(OBJECT ?Area1)
(Area {name=="area2"}(OBJECT ?Area2)
....
and then I can work with these objects. I tested and is not working. It
seems that jess refuses to assign two times the same class in the rule.
Of course I had import my class "Area" to jess, it can recognize it. Can
you help me about this?
Thanks,
Joao Mourao
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