dianshang-houduan/src/main/java/com/sztzjy/linkCommerce/service/impl/UserInfoServiceImpl.java

package com.sztzjy.linkCommerce.service.impl;

import com.sztzjy.linkCommerce.entity.SchoolClass;
import com.sztzjy.linkCommerce.entity.SchoolClassExample;
import com.sztzjy.linkCommerce.entity.Userinfo;
import com.sztzjy.linkCommerce.entity.UserinfoExample;
import com.sztzjy.linkCommerce.mapper.*;

import com.sztzjy.linkCommerce.service.UserInfoService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;


@Service
public class UserInfoServiceImpl implements UserInfoService {
    @Autowired
    UserinfoMapper userInfoMapper;
    @Autowired
    SchoolMapper schoolMapper;
    @Autowired
    SchoolFacultyMapper schoolFacultyMapper;
    @Autowired
    SchoolMajorMapper schoolMajorMapper;
    @Autowired
    SchoolClassMapper schoolClassMapper;

    @Override
    public boolean existsByUserName(String userName) {
        UserinfoExample userInfoExample = new UserinfoExample();
        userInfoExample.createCriteria().andUsernameEqualTo(userName);
        List<Userinfo> userInfos = userInfoMapper.selectByExample(userInfoExample);
        if(userInfos.isEmpty() || userInfos==null){
            return false;
        }else {
            return true;
        }
    }


    //根据学校ID查询该学校下的班级名
    @Override
    public List<String> getClassNameList(String userId) {
        Userinfo userinfo = userInfoMapper.selectByPrimaryKey(userId);
        String schoolMajorId = userinfo.getSchoolMajorId();
        SchoolClassExample schoolClassExample = new SchoolClassExample();
        schoolClassExample.createCriteria().andSchoolMajorIdEqualTo(schoolMajorId);
        List<SchoolClass> schoolClasses = schoolClassMapper.selectByExample(schoolClassExample);
        List<String> list=new ArrayList<>();
        for (int i = 0; i < schoolClasses.size(); i++) {
            list.add(schoolClasses.get(i).getClassName());
        }
        return list;
    }



}