Re: JESS: java.lang.Boolean to Jess Boolean
From Java you should use
new Value(RU.ATOM, TRUE)
for true, and
new Value(RU.ATOM, FALSE)
for false. As a shortcut, there are constants Funcall.TRUE and
Funcall.FALSE in the jess.Funcall class.
Note also that String constants in Java (and in Jess) use double
quotes, not single quotes.
I think Mahesh Gandhe wrote:
hi ,
I am writing the java code for the method so that
the method could be invoked in the command line in jess.
The code is as follows
import jess.*;
import java.lang.*;
public class GreaterThan implements Userfunction
{
public String getName() { return my-upcase;}
public Value call (ValueVector vv ,Context context) throws JessException
{
Boolean ret = new Boolean (true);
return new Value (ret,'TRUE');
}
}
}
During compilation it giving error stating that 'TRUE' is not a data type.
can some body tell me how to construct the new JessValue object of
type java.lang.Boolean.
Regards,
Mahesh G.
-
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Ernest Friedman-Hill
Distributed Systems ResearchPhone: (925) 294-2154
Sandia National LabsFAX: (925) 294-2234
Org. 8920, MS 9012 [EMAIL PROTECTED]
PO Box 969 http://herzberg.ca.sandia.gov
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RE: JESS: java.lang.Boolean to Jess Boolean
Try:
Boolean ret = new Boolean(true);
return new Value( ret, RU.EXTERNAL_ADDRESS );
Jess does not have a boolean in it's type system like it does for int and
long. It does have the generic EXTERNAL_ADDRESS which can be any Object
including Boolean. See the javadoc for the class RU or RU.java or
Value.java.
Note that in some cases jess performs type conversions so be careful where
and how you use the RU.EXTERNAL_ADDRESS Value objects.
Ernest, any chance for RU.BOOLEAN and a BooleanValue class?
Good luck!
alan
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On
Behalf Of Mahesh Gandhe
Sent: Tuesday, November 27, 2001 12:51 PM
To: [EMAIL PROTECTED]
Subject: JESS: java.lang.Boolean to Jess Boolean
hi ,
I am writing the java code for the method so that
the method could be invoked in the command line in jess.
The code is as follows
import jess.*;
import java.lang.*;
public class GreaterThan implements Userfunction
{
public String getName() { return my-upcase;}
public Value call (ValueVector vv ,Context context) throws JessException
{
Boolean ret = new Boolean (true);
return new Value (ret,'TRUE');
}
}
}
During compilation it giving error stating that 'TRUE' is not a data type.
can some body tell me how to construct the new JessValue object of
type java.lang.Boolean.
Regards,
Mahesh G.
Do You Yahoo!?
Yahoo! GeoCities - quick and easy web site hosting, just $8.95/month.
To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'
in the BODY of a message to [EMAIL PROTECTED], NOT to the list
(use your own address!) List problems? Notify [EMAIL PROTECTED]
Re: JESS: java.lang.Boolean to Jess Boolean
See my other message, and manual section 2.6. Jess -does- have a
boolean type.
I think Alan Moore wrote:
Try:
Boolean ret = new Boolean(true);
return new Value( ret, RU.EXTERNAL_ADDRESS );
Jess does not have a boolean in it's type system like it does for int and
long. It does have the generic EXTERNAL_ADDRESS which can be any Object
including Boolean. See the javadoc for the class RU or RU.java or
Value.java.
Note that in some cases jess performs type conversions so be careful where
and how you use the RU.EXTERNAL_ADDRESS Value objects.
Ernest, any chance for RU.BOOLEAN and a BooleanValue class?
Good luck!
alan
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On
Behalf Of Mahesh Gandhe
Sent: Tuesday, November 27, 2001 12:51 PM
To: [EMAIL PROTECTED]
Subject: JESS: java.lang.Boolean to Jess Boolean
hi ,
I am writing the java code for the method so that
the method could be invoked in the command line in jess.
The code is as follows
import jess.*;
import java.lang.*;
public class GreaterThan implements Userfunction
{
public String getName() { return my-upcase;}
public Value call (ValueVector vv ,Context context) throws JessException
{
Boolean ret = new Boolean (true);
return new Value (ret,'TRUE');
}
}
}
During compilation it giving error stating that 'TRUE' is not a data type.
can some body tell me how to construct the new JessValue object of
type java.lang.Boolean.
Regards,
Mahesh G.
Do You Yahoo!?
Yahoo! GeoCities - quick and easy web site hosting, just $8.95/month.
To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'
in the BODY of a message to [EMAIL PROTECTED], NOT to the list
(use your own address!) List problems? Notify [EMAIL PROTECTED]
-
Ernest Friedman-Hill
Distributed Systems ResearchPhone: (925) 294-2154
Sandia National LabsFAX: (925) 294-2234
Org. 8920, MS 9012 [EMAIL PROTECTED]
PO Box 969 http://herzberg.ca.sandia.gov
Livermore, CA 94550
To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'
in the BODY of a message to [EMAIL PROTECTED], NOT to the list
(use your own address!) List problems? Notify [EMAIL PROTECTED]
Re: JESS: java.lang.Boolean to Jess Boolean
hi ,
thanks a ton.
The code is working fine and my problem is solved.
Regards,
Mahesh G.
[EMAIL PROTECTED] wrote:
From Java you should use new Value(RU.ATOM, "TRUE")for true, and new Value(RU.ATOM, "FALSE")for false. As a shortcut, there are constants Funcall.TRUE andFuncall.FALSE in the jess.Funcall class.Note also that String constants in Java (and in Jess) use doublequotes, not single quotes.I think Mahesh Gandhe wrote: hi , I am writing the java code for the method so that the method could be invoked in the command line in jess. The code is as follows import jess.*; import java.lang.*; public class GreaterThan implements Userfunction { public String getName() { return "my-upcase";} public Value call (ValueVector vv ,Context context) throws JessException { Boolean ret = new Boolean (true); return new Value (ret,'TRUE'); } } } During compilation it giving error stating that 'TRUE' is not a data type. can some body tell me how to construct the new JessValue object of type java.lang.Boolean.Regards, Mahesh G.- Do You Yahoo!? Yahoo! GeoCities - quick and easy web site hosting, just $8.95/month.-Ernest Friedman-Hill Distributed Systems Research Phone: (925) 294-2154Sandia National Labs FAX: (925) 294-2234Org. 8920, MS 9012 [EMAIL PROTECTED]PO Box 969 http://herzberg.ca.sandia.govLivermore, CA 94550To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'in !
the BODY of a message to [EMAIL PROTECTED], NOT to the list(use your own address!) List problems? Notify [EMAIL PROTECTED]Do You Yahoo!?
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Re: JESS: boolean Value
The boolean values in Jess are the atoms TRUE and FALSE. There are boolean constants you can use in the Funcall class -- jess.Funcall.TRUE and Jess.Funcall.FALSE and public static Value objects with the appropriate values, or just use new Value(TRUE, RU.ATOM). I think [EMAIL PROTECTED] wrote: [Charset iso-8859-1 unsupported, filtering to ASCII...] Hi Guys, I'm trying to write a few userfunctions that return boolean. Class Value does not have a constructor that takes boolean, and RU does not have a boolean field. Is there anyway around this? Thanks Dheeraj - Ernest Friedman-Hill Distributed Systems ResearchPhone: (925) 294-2154 Sandia National LabsFAX: (925) 294-2234 Org. 8920, MS 9012 [EMAIL PROTECTED] PO Box 969 http://herzberg.ca.sandia.gov Livermore, CA 94550 - To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] -
JESS: Boolean
Sometimes I think that a short course in Boolean Logic might be applicable BEFORE one engages in the task of writing a rulebased routine. Remember, "Boole was no foole." :-) -- ttfn IHN Jim - James C. Owen Knowledge-Based Systems Corporation 4817 Buckskin Drive Fort Worth, Texas 76137 817.314.0584 Office 817.314.0585 FAX 817.247.8976 Cellular mailto:[EMAIL PROTECTED] http://www.kbsc.com "I Love You ... I Love You ... I Love You. -God" (Seen on a billboard in DFW MetroPlex.) - To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] -
