[rules-users] same criteria across multiple rules cancels activation with Property Reactive Facts

I have come across a problem of unexpected cancels on activations when using property reactive facts. The problem occurs if two or more rules have the same criteria. I have uploaded all the files and a unit test to show this using a very simple bare bones example: pom.xml <http://drools.46999.n3.nabble.com/file/n4021204/pom.xml> log4j.properties <http://drools.46999.n3.nabble.com/file/n4021204/log4j.properties> modify-test.drl <http://drools.46999.n3.nabble.com/file/n4021204/modify-test.drl> SampleBean.java <http://drools.46999.n3.nabble.com/file/n4021204/SampleBean.java> RuleRunner.java <http://drools.46999.n3.nabble.com/file/n4021204/RuleRunner.java> RulesLogger.java <http://drools.46999.n3.nabble.com/file/n4021204/RulesLogger.java> ModifyTest.java <http://drools.46999.n3.nabble.com/file/n4021204/ModifyTest.java> Running ModifyTest.java produces the following logs: 0 [main] DEBUG com.demo.rules.session.RulesLogger - Activation created calculate y 1 [main] DEBUG com.demo.rules.session.RulesLogger - Activation created calculate x 2 [main] DEBUG com.demo.rules.session.RulesLogger - Before Activation fired calculate x 4 [main] DEBUG com.demo.rules.session.RulesLogger - Activation cancelled calculate y 6 [main] DEBUG com.demo.rules.session.RulesLogger - After Activation fired [Activation rule=calculate x, act#=1, salience=0, tuple=[fact 0:2:42753698:30752:3:DEFAULT:SampleBean [x=10, y=null, id=1]] ] The activations have been created as expected but an activation on a rule is cancelled unexpectedily as indicated by log statement 4. Why is this? If all the rules have a different criteria then all works fine. If i dont use property reactive facts then it works. It looks like this is a bug, can someone confirm this ? We have some edge case scenarios in our rules where it is possible for some rules to end up with the same criteria. We dont want to force the business analysts to have to merge the rules as we have a very large number of rules, and it will be very hard for them to track the criteria for each rule. If it is not a bug can someone please provide the rational reason why it is sensible to have the activation cancelled. -- View this message in context: http://drools.46999.n3.nabble.com/same-criteria-across-multiple-rules-can... Sent from the Drools: User forum mailing list archive at Nabble.com.