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| 文件: |
cppmysql.rar |
| 大小: |
6KB |
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网上对mysql的c++封装类都不太好，这是我封装的mysql封装类，大家可以任意使用，如果有问题请与我联系。
//.h
////////////////////////////////////////////////////////////////////////////////
// CppMysql - A C++ wrapper around the mysql database library.
//
// Copyright (c) 2009 Rob Groves. All Rights Reserved.
//
// Permission to use, copy, modify, and distribute this software and its
// documentation for any purpose, without fee, and without a written
// agreement, is hereby granted, provided that the above copyright notice,
// this paragraph and the following two paragraphs appear in all copies,
// modifications, and distributions.
//
// IN NO EVENT SHALL THE AUTHOR BE LIABLE TO ANY PARTY FOR DIRECT,
// INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST
// PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION,
// EVEN IF THE AUTHOR HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// THE AUTHOR SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
// PARTICULAR PURPOSE. THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF
// ANY, PROVIDED HEREUNDER IS PROVIDED "AS IS". THE AUTHOR HAS NO OBLIGATION
// TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
//
// u can use it for anything, but u must show the source
// frome
http://rainfish.cublog.cn// by ben
// if u find some questions, please tell me with email
//
// V1.0 18/09/2009 -Initial Version for cppmysql
////////////////////////////////////////////////////////////////////////////////
#ifndef _CPP_MYSQL_1_H_
#define _CPP_MYSQL_1_H_
#include "mysql.h"
typedef unsigned int u_int;
typedef unsigned long u_long;
typedef MYSQL* DB_HANDLE;
class CppMySQL3DB;
class CppMySQLQuery
{
friend class CppMySQL3DB;
public:
CppMySQLQuery();
//当执行拷贝构造函数后，括号里的类已经无效，不能再使用
CppMySQLQuery(CppMySQLQuery& rQuery);
//当执行赋值构造函数后，=右边的类已经无效，不能再使用
CppMySQLQuery& operator=(CppMySQLQuery& rQuery);
virtual ~CppMySQLQuery();
u_long numRow();//多少行
int numFields();//多少列
int fieldIndex(const char* szField);
//0...n-1列
const char* fieldName(int nCol);
// const char* fieldDeclType(int nCol);
// int fieldDataType(int nCol);
u_long seekRow(u_long offerset);
int getIntField(int nField, int nNullValue=0);
int getIntField(const char* szField, int nNullValue=0);
double getFloatField(int nField, double fNullValue=0.0);
double getFloatField(const char* szField, double fNullValue=0.0);
//0...n-1列
const char* getStringField(int nField, const char* szNullValue="");
const char* getStringField(const char* szField, const char* szNullValue="");
const unsigned char* getBlobField(int nField, int& nLen);
const unsigned char* getBlobField(const char* szField, int& nLen);
bool fieldIsNull(int nField);
bool fieldIsNull(const char* szField);
bool eof();
void nextRow();
void finalize();
private:
void freeRes();
void checkVM();
private:
MYSQL_RES* _mysql_res;
MYSQL_FIELD* _field;
MYSQL_ROW _row;
u_long _row_count;
u_int _field_count;
};
class CppMySQL3DB
{
public:
CppMySQL3DB();
virtual ~CppMySQL3DB();
int open(const char* host, const char* user, const char* passwd, const char* db,
unsigned int port = 0, unsigned long client_flag = 0);
void close();
/* 返回句柄 */
MYSQL* getMysql();
/* 处理返回多行的查询，返回影响的行数 */
//返回引用是因为在CppMySQLQuery的赋值构造函数中要把成员变量_mysql_res置为空
CppMySQLQuery& querySQL(const char *sql);
/* 执行非返回结果查询 */
int execSQL(const char* sql);
/* 测试mysql服务器是否存活 */
int ping();
/* 关闭mysql 服务器 */
int shutDown();
/* 主要功能:重新启动mysql 服务器 */
int reboot();
/*
* 说明:事务支持InnoDB or BDB表类型
*/
/* 主要功能:开始事务 */
int startTransaction();
/* 主要功能:提交事务 */
int commit();
/* 主要功能:回滚事务 */
int rollback();
/* 得到客户信息 */
const char * getClientInfo();
/* 主要功能:得到客户版本信息 */
const unsigned long getClientVersion();
/* 主要功能:得到主机信息 */
const char * getHostInfo();
/* 主要功能:得到服务器信息 */
const char * getServerInfo();
/*主要功能:得到服务器版本信息*/
const unsigned long getServerVersion();
/*主要功能:得到 当前连接的默认字符集*/
const char * getCharacterSetName();
/* 得到系统时间 */
const char * getSysTime();
/* 建立新数据库 */
int createDB(const char* name);
/* 删除制定的数据库*/
int dropDB(const char* name);
bool tableExists(const char* table);
u_int lastRowId();
void setBusyTimeout(int nMillisecs){};
private:
CppMySQL3DB(const CppMySQL3DB& db);
CppMySQL3DB& operator=(const CppMySQL3DB& db);
void checkDB();
private:
/* msyql 连接句柄 */
MYSQL* _db_ptr;
CppMySQLQuery _db_query;
};
#endif
//.cpp
///////////////////////////////////////////////////////////////////////////////
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