package com.matrix.core.tools;

import java.util.List;
import java.util.function.Function;

public class ParamCheckUtil {

    /**
     * 校验列表参数不能为空
     *
     * @param args
     */
    public static void requireNonNulls(Object... args) {
        if (args == null || args.length < 0) {
            throw new NullPointerException("参数校验列表为空");
        }
        for (int i = 0; i < args.length; i++) {
            if (args[i] == null) {
                throw new NullPointerException(String.format("参数校验列表第%s个参数为空", i + 1));
            }
        }
    }

    /**
     * 校验集合中的参数不能为空
     * requireListElementNonNull(objects, Arrays.asList(OrderItemDto::getCount, OrderItemDto::getGoodsId));
     * @param
     */
    public static <T> void requireListElementNonNull(List<T> list, List<Function<? super T, ? extends Object>> getterFunctions) {

        requireNonNulls(list,getterFunctions);

        for (int i = 0; i < list.size(); i++) {
            for (int j = 0; j < getterFunctions.size(); j++) {
                if(getterFunctions.get(j).apply(list.get(i))==null){
                    throw new NullPointerException(String.format("集合中第%s个对象第%s参数为空",i+1,j+1));
                }
            }

        }

    }



    public static void main(String[] args) {

    }

}