Hi Ron, Have a look at the "Alarms" example for "Collect" in the (4.0.5) manual.
This should give you a good starting point. Cheers, Mike -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ron Kneusel Sent: 22 July 2008 23:01 To: [email protected] Subject: [rules-users] How to check for a variable number of "conditions" ina rule? Greetings! I want to create a rule that checks a fact which contains an array to see if n or more of the elements of that array have a specific value. The number of elements to check will vary from invocation to invocation of the rules engine and will likely be added as a global. I can do this by using a helper function. Say, for example, I have: rule "fire_when_testFlags_true" when eval(testFlags(flags, limit.intValue())); then System.out.println("Yup, " + limit + " or more flags are true!"); end Where flags and limit are both globals. Then I can define testFlags as: function boolean testFlags(Flags flags, int threshold) { int count = 0; for(int i=0; i < flags.getSize(); i++) { if (flags.getValue(i)) { count++; if (count>= threshold) { return true; } } } return false; } This works but violates the warning not to use a global that isn't immutable in the LHS of a rule. Does anyone have an idea about how to implement a rule that in effect has an arbitrary number of conditions to be tested? Ron _________________________________________________________________ Keep your kids safer online with Windows Live Family Safety. http://www.windowslive.com/family_safety/overview.html?ocid=TXT_TAGLM_WL _family_safety_072008 _______________________________________________ rules-users mailing list [email protected] https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list [email protected] https://lists.jboss.org/mailman/listinfo/rules-users
