在有状态会话期间在Drools 6中动态添加规则

Question

亲爱的程序员，您好

在构建KnowledgeBase和KnowledgeSession之后，我尝试将DRL添加到KieFilesystem。但规则实际上不会触发。

你们可以试着帮助我吗？

感谢提前尝试每一个解决方案！

mycode的：

public class Playground {
    private String newline = System.getProperty("line.separator");

    private int MIN_VALUE = -2147483648;

    public static void main(String[] args) {
        Playground pg = new Playground();
        pg.doRules();
    }

    private String generateDRLString() {
        StringBuilder sb;
        sb = new StringBuilder();
        sb.append("package performance.drools;" + newline);
        for (int i = start; i <= end; i++) {
            sb.append("rule \"R" + i + "\"" + newline);
            sb.append("when" + newline);
            sb.append("then" + newline);
            sb.append("System.out.println(\"rule" + i + " fired!\");" + newline);
            sb.append("end" + newline);
        }
        return sb.toString();
    }

    KieServices kieServices;
    KieContainer kieContainer;
    KieBaseConfiguration kieBaseConf;
    KieBase kieBase;
    KieSession kieSession;
    KieFileSystem kfs;
    KieBuilder kieBuilder;
    KieScanner kieScanner;
    int start = MIN_VALUE;
    int end = MIN_VALUE;
    int count = 0;

    private void init() {

        kieServices = KieServices.Factory.get();
        // configure module
        KieModuleModel kieModuleModel = kieServices.newKieModuleModel();
        KieBaseModel kieBaseModel1 = kieModuleModel.newKieBaseModel("KBase1 ")
            .setDefault(true)
            .setEqualsBehavior(EqualityBehaviorOption.EQUALITY)
            .setEventProcessingMode(EventProcessingOption.CLOUD);

        KieSessionModel kieSessionModel1 = kieBaseModel1
            .newKieSessionModel("KSession1").setDefault(true)
            .setType(KieSessionModel.KieSessionType.STATEFUL)
            .setClockType(ClockTypeOption.get("realtime"));
        // initialize module
        kieBaseConf = kieServices.newKieBaseConfiguration();
        kfs = kieServices.newKieFileSystem();
        System.out.println(kieModuleModel.toXML());
        kfs.writeKModuleXML(kieModuleModel.toXML());

        // attach kfs to kieBuilder
        kieBuilder = kieServices.newKieBuilder(kfs).buildAll();
        assertEquals(0, kieBuilder.getResults()
            .getMessages(Message.Level.ERROR).size());

        kieContainer = kieServices.newKieContainer(kieServices.getRepository()
            .getDefaultReleaseId());
        kieBase = kieContainer.newKieBase(kieBaseConf);
        kieSession = kieBase.newKieSession();
        kieScanner = kieServices.newKieScanner(kieContainer);
    }

    private void addRules() {
        kfs.write("src/main/resources/KBase1/ruleSet" + count + ".drl", generateDRLString());
        count++;
        kieBuilder.buildAll();
        assertEquals(0, kieBuilder.getResults()
            .getMessages(Message.Level.ERROR).size());
        kieScanner.scanNow();
    }

    public void doRules() {
        init();

        start = 1;
        end = 3;
        addRules();
        kieSession.insert(new Object());

        start = 10;
        end = 12;
        addRules();
        kieSession.fireAllRules();

        System.out.println(kieSession.getFactCount());
    }
}