desien-mode/src/main/java/responsibilityPattern/handler/OrderHandler.java

package responsibilityPattern.handler;

import responsibilityPattern.entity.Order;

public abstract class OrderHandler {
    private OrderHandler nextHandler;
    public OrderHandler setNextHandler(OrderHandler nextHandler) {
        this.nextHandler = nextHandler;
        return nextHandler;
    }
    public void handle(Order order) throws Exception {
        if(proceed(order)&&nextHandler != null) {
            nextHandler.handle(order);
        }
    }

    abstract boolean proceed(Order order) throws Exception;
}