Drools 执行，获取撤回的数量

Question

我正在尝试返回 drools 会话执行的撤回次数。

我可以获得执行次数：

...
final Command fireAllRulesCmd = CommandFactory.newFireAllRules("executed-rules");
cmds.add(fireAllRulesCmd);
...
session.execute(CommandFactory.newBatchExecution(cmds));
final Integer executedRules = (Integer) execute.getValue("executed-rules");
....

有没有类似的方法来获取所有的“retracted-rules”？

谢谢！！

问候

Answer 1

实现org.kie.api.event.kiebase.KieBaseEventListener，并在方法afterRuleRemoved 中计算事件：

class MyKieBaseEventListener implements KieBaseEventListener {
    private int removedRules;
    public void afterRuleRemoved(AfterRuleRemovedEvent event){
        removedRules++;
    }
    public int getRemovedRules(){
        return removedRules;
    }
    // other methods
}

您必须将此侦听器附加到 KieBase。

kieBase.addEventListener( new MyKieBaseEventListener() );