Hi, When I insert fact to working memery in the rule file, others rule some time can't be fired. I use the drools rule version is 5.3.0.Final call rule engine in java and loop 100,then has 1-3 times the "second" rule and "third" rule can't be fired. rule file: package com.sample import com.sample.pojo.Order import com.sample.pojo.User import com.sample.pojo.Item declare ActivityType orderId : String name : String type : String end rule "first" no-loop true salience 100 when $user:User() $order:Order(userId == $user.id ,server=="server",operator=="operator",gameName=="gameName",createdDt > "2011-11-01",createdDt < "2011-11-30",points >= 240) not Order(userId == $user.id,id != $order.id) then drools.insert(new ActivityType($order.getId(),"first","S")); System.out.println("inserted activity type,"+" orderId="+$order.getId()); end rule "second" salience 2 when $activityType : ActivityType(name == "first",type == "S") $order:Order(id == $activityType.orderId,points == 240,amount >= 10) $user:User(id == $order.userId) then $user.setItem(new Item("aaa",1)); end rule "third" salience 1 when $activityType : ActivityType(name == "first", type == "S") $order:Order(points == 240, id == $activityType.orderId) $user:User(id == $order.userId) then $user.setItem(new Item("aaa",1*$order.getQuality())); end -- View this message in context: http://drools.46999.n3.nabble.com/When-I-insert-fact-to-working-memery-in... 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