What I gave below certainly works within a rule -- can you describe
to me the specific scenario you're trying to work out?
On Sep 27, 2007, at 5:53 PM, marthawashington wrote:
I have a similar question regarding accessing Java collections from
Jess.
How do you do this from inside a rule? I've read through the book and
searched the forum but unfortunately am still not clear on this.
Thanks!
Ernest Friedman-Hill wrote:
You deal with Java objects from Jess the same way you deal with them
from Java. There is no special syntax for dealing with collections --
you just call the Java methods. To call a method "y" on a Java object
in variable ?x with argument "z", you write
(?x y "z")
Here you want to call "get" on the ArrayList to get an element, and
"getValue" on the result; it looks like
(bind ?theObject (?arraylist get 1))
(?theObject getValue "value1")
of course you can eliminate the extra variable ?theObject and write
((?arraylist get 1) getValue "value1")
Now, I'm a tiny bit concerned that you didn't actually mean
"ArrayList" but rather "array" in your original post; which is it?
On Sep 26, 2007, at 3:15 PM, Andrew Meng wrote:
Hello,
I have a java arraylist collection declared in Jess. In a rule's
defination, I want to get some value from a object contained in
arraylist. like,
(> arraylist[1].getValue("value1") arraylist[0].getValue
("value2") )
Can anyone tell me what is the right way to do it in Jess?
Thanks a lot in advance!
Andrew
Discover the new Windows Vista Learn more!
---------------------------------------------------------
Ernest Friedman-Hill
Advanced Software Research Phone: (925) 294-2154
Sandia National Labs FAX: (925) 294-2234
PO Box 969, MS 9012 [EMAIL PROTECTED]
Livermore, CA 94550 http://www.jessrules.com
--------------------------------------------------------------------
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 owner-jess-
[EMAIL PROTECTED]
--------------------------------------------------------------------
--
View this message in context: http://www.nabble.com/JESS%3A-How-to-
access-info-in-a-objects-cotained-in-a-arraylist.-
tf4524484.html#a12931035
Sent from the Jess mailing list archive at Nabble.com.
--------------------------------------------------------------------
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 owner-jess-
[EMAIL PROTECTED]
--------------------------------------------------------------------
---------------------------------------------------------
Ernest Friedman-Hill
Advanced Software Research Phone: (925) 294-2154
Sandia National Labs FAX: (925) 294-2234
PO Box 969, MS 9012 [EMAIL PROTECTED]
Livermore, CA 94550 http://www.jessrules.com
--------------------------------------------------------------------
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]
--------------------------------------------------------------------
