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Find rules fired/matched for each fact

Is there a way to find out which rules were matched (fired) whenever I insert a fact (POJO) (or whenever I fire all the rules). I need to figure out for which facts none of the rules got fired and for each fact which of the rules got fired for some visualisation activity.

Solution

  • Implement method void beforeMatchFired(BeforeMatchFiredEvent event) of the interface org.kie.api.event.rule.AgendaEventListener. The event will tell you a match: Match getMatch(), and the match informs you about facts: List<? extends FactHandle> getFactHandles() and the rule: Rule getRule().

    If you want to use another listener for keeping track of inserted facts, there is org.kie.api.event.rule.DebugRuleRuntimeEventListener, but you could do this just as well in the application code where you insert facts.

    I guess you can imagine the rest: storing this information in a Map and evaluating it is a simple exercise.