fluent 编程风格

使用Fluent Interface：Fluent Interface可以使代码更短，更容易编写。

原先创建和赋值是这么写：

The most common way I see this kind of thing built up is like this:

private void makeNormal(Customer customer) {

Order o1 = new Order();

customer.addOrder(o1);

OrderLine line1 = new OrderLine(6, Product.find(“TAL”));

o1.addLine(line1);

OrderLine line2 = new OrderLine(5, Product.find(“HPK”));

o1.addLine(line2);

OrderLine line3 = new OrderLine(3, Product.find(“LGV”));

o1.addLine(line3);

line2.setSkippable(true);

o1.setRush(true);

以后可以这么写：

private void makeFluent(Customer customer) {

customer.newOrder()

.with(6, “TAL”)

.with(5, “HPK”).skippable()

.with(3, “LGV”)

.priorityRush();