我最近将 Drools 集成到我的事件驱动项目中。我在那里使用以下 maven 工件： kie-internal、kie-api、drools-core、drools-compiler。他们都有一个版本6.0.0.Beta3
这是我的代码：
try {
KnowledgeBase kbase;
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newClassPathResource("rules.drl"), ResourceType.DRL);
if (kbuilder.hasErrors()) {
System.out.println(kbuilder.getErrors().toString());
}
KieBaseConfiguration conf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
conf.setOption(EventProcessingOption.STREAM);
kbase = KnowledgeBaseFactory.newKnowledgeBase(conf);
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
KieSession ksession = kbase.newKieSession();
ksession.insert(new EventA());
ksession.fireAllRules();
Thread.sleep(8000);
ksession.destroy();
} catch (InterruptedException ex) {
System.err.println(ex.getMessage());
}
规则：
declare EventA
@role( event )
end
declare EventB
@role( event )
end
rule "Timeout EventA"
salience 500
when
$a : EventA()
not(EventB(this after[0,4s] $a))
then
System.out.println("Retracting EventA: " + $a);
retract($a);
end
问题是，在我将 drools 依赖项更新到版本6.0.0.CR4（最新）后，不再触发超时规则......也许我错过了什么或者这是一个错误？