From a99925a07695ef2ebe3a1597f072d60f3cdfb40f Mon Sep 17 00:00:00 2001 From: pk4wt2yal <1330800687@qq.com> Date: Mon, 25 Nov 2024 12:20:24 +0800 Subject: [PATCH] Delete 'src/my-online-judge-master/MYOJ/comm/Comm_model_MySQL.hpp' --- .../MYOJ/comm/Comm_model_MySQL.hpp | 160 ------------------ 1 file changed, 160 deletions(-) delete mode 100644 src/my-online-judge-master/MYOJ/comm/Comm_model_MySQL.hpp diff --git a/src/my-online-judge-master/MYOJ/comm/Comm_model_MySQL.hpp b/src/my-online-judge-master/MYOJ/comm/Comm_model_MySQL.hpp deleted file mode 100644 index 7505f94..0000000 --- a/src/my-online-judge-master/MYOJ/comm/Comm_model_MySQL.hpp +++ /dev/null @@ -1,160 +0,0 @@ -// 该模块负责和数据交互，对题库进行增删改查，对外提供访问数据接口 -// MySQL版本题库 - -// to do... -// 1.增加一个删除指定题号的接口 -// 2.增加一个查询指定题号的接口 -#pragma once - -#include -#include - -#include "util.hpp" - -namespace ns_model_MySQL -{ - struct Question - { - std::string number; // 题目的唯一编号 - std::string title; // 题目的标题 - std::string star; // 题目的难度——简单/中等/困难 - int cpu_limit; // 题目的时间限制（s) - int mem_limit; // 题目的空间限制（KB） - std::string desc; // 题目的题干描述 - std::string header; // 题目预设给用户在线编辑器的代码 - std::string tail; // 题目的测试用例，需要和header拼接，形成完整代码 - }; - - // MySQL中的表名 - const std::string table_name = "oj_questions"; - - // IP地址 - const std::string host = "127.0.0.1"; - - // MySQL用户 - const std::string user = "oj_client"; - - // 用户密码 - const std::string passwd = "ZZYcxrmyh777"; - - // 数据库名称 - const std::string db = "oj"; - - // MySQL服务端口号 - const uint16_t port = 8080; - - class Model - { - public: - Model() - { - } - ~Model() - { - } - - // 查询数据库的接口 - // const std::string& query 为要执行的sql语句 - // std::vector* out 为输出型参数，存放查询的结果 - bool queryMySQL(const std::string &query, std::vector *out) - { - // 1.创建MySQL句柄 - MYSQL *my = mysql_init(nullptr); - - // lg(Debug, "mysql_init finish\n"); - - // 2.连接数据库 - if (nullptr == - mysql_real_connect(my, host.c_str(), user.c_str(), passwd.c_str(), db.c_str(), port, - nullptr, 0)) - { - lg(Fatal, "数据库连接失败, errno: %d, strerror: %s\n", errno, strerror(errno)); - return false; - } - - // 设置字符集，否则传输中文会乱码 - mysql_set_character_set(my, "utf8"); - - lg(Info, "数据库连接成功!\n"); - - // 3.下发SQL命令 - int ret = mysql_query(my, query.c_str()); - if (0 != ret) - { - lg(Error, "%s, \"sql\"语句执行失败, ret: %d, mysql_error: %s\n", - query.c_str(), ret, mysql_error(my)); - return false; - } - - if (out == nullptr) - { - // 如果out为nullptr, 说明并不是查询类sql, 或者不关心查询结果, 故直接返回 - return true; - } - - // 4.提取结果 - MYSQL_RES *res = mysql_store_result(my); - - // 5.分析结果 - int rows = mysql_num_rows(res); // 获得行数量 - int cols = mysql_num_fields(res); // 获得列数量 - - Question q; - - for (int i = 0; i < rows; i++) - { - MYSQL_ROW row = mysql_fetch_row(res); - q.number = row[0]; - q.title = row[1]; - q.star = row[2]; - q.desc = row[3]; - q.header = row[4]; - q.tail = row[5]; - q.cpu_limit = atoi(row[6]); - q.mem_limit = atoi(row[7]); - - out->push_back(q); - } - - - // 6.释放资源 - mysql_free_result(res); - - // 关闭MySQL连接 - mysql_close(my); - return true; - } - - bool getAllQuestions(std::vector *out) - { - std::string sql = "select * from "; - sql += table_name; - sql += ";"; - - return queryMySQL(sql, out); - } - - bool getOneQuestion(const std::string &question_num, Question *out) - { - bool res = false; - std::string sql = "select * from "; - sql += table_name; - sql += " where number="; - sql += question_num; - sql += ";"; - std::vector result; - - if (queryMySQL(sql, &result)) - { - if (result.size() == 1) - { - *out = result[0]; - res = true; - } - } - - return res; - } - }; - -}