G'day everyone,
I'm looking to create a java object, and monitor this via its javabeans
compatibility. Then if the object's properties meet certain criteria,
then a rule fires. I have done this with no problems using the Jess
command line, but am now interested in doing the equivalent via the
Jess API.
I understand how to do this, but have a queston regarding the storing
of rules. I want to store my rules in a .clp file, which if using the
Jess command line, i would just use (batch).
How do I create the bean complient object in Java, but ensure the rules in the .clp file know what I'm referring to?
my code for a simple java class is:
---------------------------------------------------------
import jess.*;
public class JessDemo {
public static void main(String[] args) {
Rete engine = new Rete();
try
{
engine.clear();
engine.executeCommand("(batch jess_test.clp)"); //this line causes an
error
engine.defclass("address", "Address", null);
Address
inputAddress = new Address(null, null, null, null, "36","marlow",
"street", "wembley", "wa", "6014");
System.out.println(inputAddress.toString() );
engine.definstance("address", inputAddress, false);
}
catch (JessException error)
{
System.out.println("Error!");
System.out.println(error.toString() );
}
}
}
------------------------------------------------------------------
the clp file to be used with the javabean contains:
------------------------------
(defrule complete-address (newAddress (locality ~nil) (number ~nil)
(postCode ~nil) (state ~nil) (streetName ~nil) ) => (printout t
"thunderbirds are go" crlf) )
--------------------------------
any my original clp file, which i used at the jess command line, was:
----------------------------------------
(clear)
(defclass newAddress Address)
(ppdeftemplate newAddress)
(bind ?na (new Address nil nil nil nil "36" "marlow" "street" "wembley" "wa" "6014" ))
(definstance newAddress ?na static)
(reset)
(defrule complete-address (newAddress (locality ~nil) (number ~nil)
(postCode ~nil) (state ~nil) (streetName ~nil) ) => (printout t
"thunderbirds are go" crlf) )
--------------------------------------------
obviously I typed (run), too. it worked no problems.
I know enough that because I have removed the defclass, ppdeftemplate,
bind and definstance commands from the top clp file, the rule has no
idea about what's going on...
so in a nutshell: how do you store rules in a clp file about an object that is not yet instantiated?
Cheers,
Matt
--
Matthew Hutchinson
Ph.D. Candidate
Department of Spatial Sciences
Curtin University of Technology
GPO Box U1987
Perth, Western Australia 6845
G'day everyone,
I'm looking to create a java object, and monitor this via its javabeans
compatibility. Then if the object's properties meet certain criteria,
then a rule fires. I have done this with no problems using the Jess
command line, but am now interested in doing the equivalent via the
Jess API.
I understand how to do this, but have a queston regarding the storing
of rules. I want to store my rules in a .clp file, which if using the
Jess command line, i would just use (batch).
How do I create the bean complient object in Java, but ensure the rules in the .clp file know what I'm referring to?
my code for a simple java class is:
---------------------------------------------------------
import jess.*;
public class JessDemo {
public static void main(String[] args) {
Rete engine = new Rete();
try
{
engine.clear();
engine.executeCommand("(batch jess_test.clp)"); //this line causes an
error
engine.defclass("address", "Address", null);
Address
inputAddress = new Address(null, null, null, null, "36","marlow",
"street", "wembley", "wa", "6014");
System.out.println(inputAddress.toString() );
engine.definstance("address", inputAddress, false);
}
catch (JessException error)
{
System.out.println("Error!");
System.out.println(error.toString() );
}
}
}
------------------------------------------------------------------
the above clp file contains:
------------------------------
(defrule complete-address (newAddress (locality ~nil) (number ~nil)
(postCode ~nil) (state ~nil) (streetName ~nil) ) => (printout t
"launching" crlf) )
--------------------------------
any my original clp file, which i used at the jess command line, was:
----------------------------------------
(clear)
(defclass newAddress Address)
(ppdeftemplate newAddress)
(bind ?na (new Address nil nil nil nil "36" "marlow" "street" "wembley" "wa" "6014" ))
(definstance newAddress ?na static)
(reset)
(defrule complete-address (newAddress (locality ~nil) (number ~nil)
(postCode ~nil) (state ~nil) (streetName ~nil) ) => (printout t
"launching" crlf) )
--------------------------------------------
I know enough that because I have removed the defclass, ppdeftemplate,
bind and definstance commands from the clp file, the rule has no idea
about what's going on...
so in a nutshell: how do you store rules in a clp file about an object that is not yet instantiated?
Cheers,
Matt
--
Matthew Hutchinson
Ph.D. Candidate
Department of Spatial Sciences
Curtin University of Technology
GPO Box U1987
Perth, Western Australia 6845
