ElmDemo/src/main/java/view/IndentView.java

package view;

import dao.indentAbstractDAO;
import dao.specification.indentDAO;
import dao.specification.merchantsDAO;
import dao.specification.userDAO;
import entities.Indent;
import entities.Users;
import util.Toolset;

import java.util.List;
import java.util.Scanner;

public class IndentView {
    public void IndentDB(int chose) throws IllegalAccessException {

        switch (chose) {
            case 0 -> System.exit(0);
            case 1 -> DeleteIndent();
            case 2 -> System.out.println("这个功能还在修复呢，小主先看看其它功能吧~");//UpdateIndent();
            case 3 -> SearchIndent(true);//查询全部
            case 4 -> SearchIndent(false);//按ID查询
        }
    }

    public void CreateIndent(Long userID) {
        Scanner reader = new Scanner(System.in);
        Indent indent = new Indent();

        System.out.println("请输入：下单餐厅id|备注");
        //用户
        userDAO user = new userDAO();
        indent.setUserID(user.searchID(userID));
        //餐厅
        Long merchantID = reader.nextLong();
        merchantsDAO merchant = new merchantsDAO();
        indent.setMerchantsID(merchant.searchID(merchantID));
        //备注
        indent.setMessage(reader.nextLine());

        indentAbstractDAO DML_insert = new indentDAO();
        int flag = DML_insert.insert(indent);
        System.out.println(flag + "行受影响");
    }

    private void DeleteIndent() {
        indentAbstractDAO DML_delete = new indentDAO();
        Scanner reader = new Scanner(System.in);
        Indent indent = new Indent();

        System.out.println("请输入你要删除的订单ID");
        indent.setId(reader.nextLong());

        int flag = DML_delete.delete(indent);
        System.out.println(flag + "行受影响");
    }

    //TODO 更新订单
    private void UpdateIndent() {

    }

    private void SearchIndent(boolean b) throws IllegalAccessException {
        Indent indent = new Indent();
        indentAbstractDAO DQL = new indentDAO();
        Scanner reader = new Scanner(System.in);
        if (b) {//b 为 true 查询全部
            for (Indent item : DQL.search(indent)) {
                System.out.println(Toolset.table(Indent.class, item));
            }
        } else {
            System.out.println("请输入你要查询的ID:");
            indent = DQL.searchID(reader.nextLong());
            System.out.println(Toolset.table(Indent.class, indent));
        }
    }

}