>> How does one write this rule and fire it (from commandline as well as
>> from Java code)
You are almost there. From the Jess prompt, you just need to make the rule:
(defrule testRule
(automobile (make Chrysler))
=>
(match))
add a (reset) command, do the assert of the type of automobile and run. I
have included the sequence below. Note the (reset) command and that the
assert comes after the (reset).
In java, an overly simplified approach would be
Rete r = new Rete();
r.executeCommand("....") where you insert each of your commands here
This is of course not very useful. But if you look at the api documentation
(http://herzberg.ca.sandia.gov/jess/docs/70/api/index.html) you will find
that there are better ways to do this and there is a **lot** more that you
can do. The documentation on the jess site is excellent and very easy to
read by the way. The interaction between Jess and Java is very easy.
-Timothy
(deftemplate automobile
"A specific car."
(slot make)
(slot model)
(slot year (type INTEGER))
(slot color (default white)))
(deffunction match () ( printout t "Match occured..." crlf))
(defrule testRule
(automobile (make Chrysler))
=>
(match))
(reset)
(assert (automobile (make Chrysler) (model LeBaron)
(year 1997)))
(run)
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