Java 不同级别的流口水情况

我正在学习口水，我试图做的是写下检查的条件

例如：

有3个Pojo类。酒店，顾客，付款

Hotel:
int id
int roomSize;
...getter/setter

Customers:
int id
String name
int groupSize
...getter/setter

Payment:
int id
int amount
...getter/setter

我想写的是检查混合类的规则，比如

if(hotel.roomSize > customer.groupSize && hotel.count > 3 && customer.groupSize == 1) {
    payment.setAmount(50);
} else {
    payment.setAmount((hotel.roomSize - custmer.groupSize) * 65)
}
------------------------
rule "some checks"
    when
        h : Hotel(h.roomCount < 3)
        c : Customer(c.groupSize == 1)

    then
        System.out.println(....);
end

---

我不认为比较

h

（“低于客户的酒店”）有什么意义是的，基本上你必须为每一组条件提供一个规则，尽管有一些技术可以减少处理“else”情况的规则代码量。我所说的hwhat I want to achieve is to have a set of rules in sequence like rule a: rule b: rule c: rule d: and if b fails dont execute c and d.