Hi Richard,
The "when" section matches fact (object) patterns, so your requirement could
be written as:-
when there is a Test Fact 'A' and another Test Fact 'B' where "the 'x'
property of 'A'" equals "the 'y' property of fact 'B' plus 1" then.....
This would become:-
rule "Rule 1"
when
Test( $y : y )
Test( x == ($y + 1) )
then
System.out.println("Rule 1 matches");
end
By default both patterns can match the same object, so test data:-
A : x = 1, y = 1
B : x = 2, y = 1
Will cause the rule to activate twice:-
A and B
B and B
With kind regards,
Mike_____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Richard Bremner Sent: 02 May 2008 08:53 To: [email protected] Subject: [rules-users] newbie question on "when" condition syntax Hi, say I have a class with two fields, x and y: public class Test { int x = 1; int y = 2; getters/setters... } I would like a rule which fires when y = x + 1 my initial thought would be something like: rule "Rule 1" when test : Test (y == x + 1) then System.out.println("Rule 1 matches."); end but this is invalid syntax and I can not find any examples of such a rule. I'm doing my best but reading the manual etc. I'm struggling with the syntax here and can't figure it out. any help really appreciated!
smime.p7s
Description: S/MIME cryptographic signature
_______________________________________________ rules-users mailing list [email protected] https://lists.jboss.org/mailman/listinfo/rules-users
