Question

您好，这里是我的用例，需要实现。我有不同类型的设备。根据设备类型，需要执行一些操作。但是对于实现的一个操作（考虑调用4个Java类）中的特定设备类型，其中一个Java类返回一个值，因此取决于该值（让它作为布尔值）是否为真（比所有4个都正确）在操作中需要调用类），或者如果该值为false，则仅需要调用2个类。因此，基本上存在设备检查，这是主要条件，而根据子条件，根据子类之一的输出需要执行不同的操作。这是基本场景...我正在尝试通过复合规则来实施，但随后我无法弄清楚如何检查多个条件，而且我实施的复合规则也无法正常工作。请让我知道我需要如何进行和实施

[
  {
    "name": "Movie id rule",
    "compositeRuleType": "UnitRuleGroup",
    "priority": 1,
    "composingRules": [
      {
        "name": "Time is evening",
        "description": "If it's later than 7pm",
        "priority": 1,
        "condition": "type == 'TCU'",
        "actions": [
          "System.out.println(\"device is tcu\");"
        ]
      },
      {
        "name": "Movie is rated R",
        "description": "If the movie is rated R",
        "priority": 1,
        "condition": "type == 'TBOX'",
        "actions": [
          "System.out.println(\"device is tbox\");"
        ]
      }
    ]
  },
  {
    "name": "weather rule",
    "description": "when it rains, then take an umbrella",
    "priority": 1,
    "condition": "type == 'EPID'",
    "actions": [
      "System.out.println(\"It rains, take an umbrella!\");"
    ]
  }
]

这是order-rule.json

这是主要课程

public class Launcher {

    public static String device;

    public static void main(String[] args) throws Exception {

        Scanner myObj = new Scanner(System.in);  // Create a Scanner object
        System.out.println("Enter device type");

        device = myObj.nextLine();  // Read user input
        //System.out.println("Device Type is: " + device);
        DeviceType type = new DeviceType();
        type.setDeviceType(device);

        Facts facts = new Facts();
        facts.put("type", device);
        facts.put("aRestAdapter", new ARestAdapter());
        facts.put("bRestAdapter", new BRestAdapter());
        facts.put("cRestAdapter", new CRestAdapater());
        facts.put("dRestAdapter", new DRestAdapter());


        MVELRuleFactory factory = new MVELRuleFactory(new JsonRuleDefinitionReader());
        Rules orderRule = factory.createRules(new FileReader("C:\\Users\\PALURI1\\Downloads\\easy-rules-easy-rules-3.3.0\\easy-rules-easy-rules-3.3.0\\easy-rules-tutorials\\src\\main\\java\\org\\jeasy\\rules\\tutorials\\device\\order-rule.json"));

        RulesEngine rulesEngine = new DefaultRulesEngine();

        rulesEngine.fire(orderRule, facts);


    }
}

因此，如果设备是TCU或TBOX，则在我运行时未执行操作。

，但是当设备为EPID时，将按预期实施操作。在实施复合规则时需要帮助

在easyrules中实施复合规则时遇到问题

0 个答案: