C++ OTL MySQL（Windows/Linux） V8.1
Windows每秒钟10000条以上插入；Linux每秒插入300条以上。Q269752451
输出截图：
測试代码
int main(int, char *[])
{
vector<e_eledata> arr_data;
print("begin make_data");
make_data(arr_data);
print("begin insert 3000 data");
try
{
Otlv4_Handle otl_handler;
otl_handler.logon("root/123456@mysql_from_centos");
otl_handler.insert(e_eledata::insert_sql(),arr_data);
print("insert data end ");
arr_data.clear();
otl_handler.select(e_eledata::select_sql(),arr_data);
print("select top 10：");
for (int i=0;i<arr_data.size();++i)
{
cout<<arr_data[i].to_string()<<endl;
}
}
catch(otl_exception& ex)
{
cout<<"exception:\n"
<<"msg:"<<ex.msg<<"\n"
<<"text:"<<ex.stm_text<<"\n"
<<"info:"<<ex.var_info<<"\n";
}
return 0;
};使用：
版本号2.0简单封装OTL
头文件Otlv4_Handle.h
#ifndef OTLV4_HANDLE_H
#define OTLV4_HANDLE_H
// =================================================================================
// ORACLE, ODBC and DB2/CLI Template Library, Version 4.0.262,
// Copyright (C) 1996-2012, Sergei Kuchin (skuchin@gmail.com)
// modified by carea @ 2014-10-29 Version 1.0
// =================================================================================
/************************************************************************/
/* */
/* 邦定变量类型 | C++ 程序使用的相应类型 */
/* USED IN MySQL table | USED IN C++ STRUCT MEMBER TYPE */
/* int | long long */
/* timestamp | otl_datetime */
/* varchar | std::string */
/* bigint | long long */
/* decimal | double */
/* */
/************************************************************************/
//数据类型应该支持的输入输出操作
//otl_stream& operator>>(otl_stream& in ,T& t)
//otl_stream& operator<<(otl_stream& out ,const T& t)
/*********************************************************************************/
/* */
/* 经常使用SQL语句写法 */
/*otl_handle.select("select f2 from test_tab",arr); */
/*otl_handle.insert("insert into test_tab1(f2)values(:f2<char[30]> )",arr); */
/* */
/*说明：数据库表中假设有属性名为：IP、PORT、INTERVAL这样的字段，赶紧改名！！（与keyword冲突） */
/* */
/*********************************************************************************/
#ifdef OTLV4_HANDLE_WINDOWS
#define OTL_ODBC_MSSQL_2008
#define OTL_ODBC_SELECT_STM_EXECUTE_BEFORE_DESCRIBE
#define OTL_STL//using std::string
#define OTL_ANSI_CPP // Turn on ANSI C++ typecasts
#define OTL_BIGINT long long
#define OTL_STR_TO_BIGINT(str,n) { n=_atoi64(str); }
#define OTL_BIGINT_TO_STR(n,str) { _i64toa(n,str,10); }
#define INSERT_NUM 10000
#endif
#ifdef OTLV4_HANDLE_LINUX
#define OTL_ODBC_UNIX
#define OTL_ODBC_SELECT_STM_EXECUTE_BEFORE_DESCRIBE
//#define OTL_ODBC_MYSQL
#define OTL_STL//using std::string
#define OTL_ANSI_CPP // Turn on ANSI C++ typecasts
#define OTL_BIGINT long long
#define OTL_STR_TO_BIGINT(str,n) { n=atoll(str); }
#define OTL_BIGINT_TO_STR(n,str) { sprintf(str,"%lld", n);}
#define INSERT_NUM 1
#endif
#include "otlv4.h"// include the OTL 4.0 header file
#include <string>
#include <algorithm>
#include <vector>
#include <iterator>
using namespace std;
#ifndef SCP_EXPORT_H
#include "SCP_Export.h"
#endif
class SCP_Export Otlv4_Handle
{
public:
Otlv4_Handle();
bool logon(const string& db_info);
bool reconnect_to_db_once(void);
~Otlv4_Handle(void);
template<typename T> int insert(const string& sql,const vector<T>& data);
template<typename T> int select(const string& sql,vector<T>& data);
int count_table_field(const string& table_name,const string& field_name);
private:
otl_connect db; // connect object
string db_infor_;
};
template<typename T> int Otlv4_Handle::insert(const string& sql,const vector<T>& data)
{
db.auto_commit_off();
otl_stream out;
out.open(INSERT_NUM, //buffer size should be == 1 always on INSERT on Linux MySQL.
//buffer size can be bigger than 2000 on Windows MySQL.
sql.c_str(),
db); // connectobject
//submit
for (size_t i = 0 ; i < data.size(); i++)
{
out<<data[i];
}
out.flush();
db.commit();
return 0;
}
template<typename T> int Otlv4_Handle::select(const string& sql,vector<T>& data)
{
//使用邦定变量类型
//sql = "select* from "+talbe;
db.auto_commit_off();
otl_stream in;
in.open(100, //buffer size
sql.c_str(),// SELECTstatement
db // connectobject
);
// copy all rows to be fetched into the vector
copy(otl_input_iterator<T,ptrdiff_t>(in),otl_input_iterator<T,ptrdiff_t>(),back_inserter(data));
return 0;
}
#endif
存储数据类定义
存储数据类头文件e_eledata.h
#ifndef E_ELEDATA_H
#define E_ELEDATA_H
#include <iostream>
#include <fstream>
#include <sstream>
#include <string>
using namespace std;
#ifndef SCP_TYPE_H
#include "scp_type.h"
#endif
#ifndef SCP_EXPORT_H
#include "SCP_Export.h"
#endif
#ifndef OTLV4_HANDLE_H
#include "Otlv4_Handle.h"
#endif
class SCP_Export e_eledata
{
public:
friend SCP_Export otl_stream& operator<<(otl_stream& out , const e_eledata& eledata);
friend SCP_Export otl_stream& operator>>(otl_stream& in , e_eledata& eledata);
string to_string(void) const;
e_eledata();
~e_eledata();
e_eledata(const e_eledata& data);
e_eledata& operator=(const e_eledata& data);
int check_format(void);
static string insert_sql(void);
static string select_sql(void);
public:
id_type id;//64位机器这里不须要使用long，假设使用long则字节太长而打印不出来
id_type e_elemeterhead_id;
otl_datetime dldt;
double tae; //总有功电量。单位：kWh。
};
#endif
