HI Team, We came in situation where we need to compare our objects of same class. For example, we have a class like SampleData.java. It has fields like 1) No 2) Student Name 3) DOJ(date of join) Now, we want to write a Rule to get the Student Details like 1) if any 5 students joined in 2 days of span This rule might changed dynamically like for now it is 2 days but in future it may be 1 day or 3 days etc., Please provide any suggestions on this... Thanks & Regards Naresh -- View this message in context: http://drools.46999.n3.nabble.com/Comparing-Objects-of-same-class-tp40300... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Hi, more details... lets take a rule like If any 5 students joined in 5 days of span... No Name DOJ 1 A *5/24* 2 B * 5/25* 3 C *5/27* 4 D *5/23* 5 E 5/30 6 F 5/20 7 G 5/15 If we take, A,B,C and D details, these 4 students are joined in <=5 days of span(lowest date :->D:5/23 and highest date :->c:5/27 --> diff is 4 days). If any other student joined in these <=5 days (5/23 to 5/27 ) then we need those all 5 students details. If we take F, A, B and D, these 4 students also joined in <= 5 days...but no.of 5 students condition is missing. As we said we are able to work on static rules like if student joined <=5/23 & !>=5/30 etc. Thanks & Regards Naresh -- View this message in context: http://drools.46999.n3.nabble.com/Comparing-Objects-of-same-class-tp40300... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Dear Wolfgang, Thanks for your patience and understandings. Let me clear our requirement. Actually we are not working any student psychology thing. I thought to simplify the problem in terms of Student example but it is getting complicated. What we are trying to achieve is... We have some RAW logs(windows event logs like login success, login failed, bad user name and password etc., along with date and time) in our DB. We are trying get trend of some particular events like bad user name and password. If these type of events are happening in less span of time, then we will find those user names and do some activity on them. In our existing application, we have achieved this by using java with hard coded inputs. Means we are getting those events, if any 5 events occurred in 3 minutes. Now we are trying to add some dynamism for these type of requirements. We are exploring Drools Rule Engines to check that is it compatible with these type of rules. If you have any other Rule Engines in your mind, please suggest us. Thanks Naresh -- View this message in context: http://drools.46999.n3.nabble.com/Comparing-Objects-of-same-class-tp40300... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users