MySQLWrapper/MySQLWrapper.h

#pragma once
#include <functional>
#include <string>

class MySQLResult
{
public:
    MySQLResult();
    ~MySQLResult();

    /// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    unsigned int getNumFields();

    /// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    uint64_t getNumRows();

    /// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    char* getFieldName(int Index);

    /// <20><><EFBFBD><EFBFBD>ÿ<EFBFBD><C3BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ִ<EFBFBD><D6B4>func
    void stepRow(const std::function<void(char** RowPtr,unsigned long* FieldLength)>& func);

private:
    struct impl;
    impl* pimpl;

    friend class MySQLConn;
};

class MySQLConn
{
public:
    MySQLConn();
    ~MySQLConn();

    /// <20><><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD>
    /// <20><><EFBFBD><EFBFBD>ֵ: 0:<3A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, -1:<3A><><EFBFBD>Ӵ<EFBFBD><D3B4><EFBFBD>
    int connect(const std::string& host, const std::string& user, const std::string& passwd, const std::string& db, unsigned int port);

    /// ִ<><D6B4>SQL<51><4C><EFBFBD><EFBFBD>
    /// <20><><EFBFBD><EFBFBD>ֵ: 1: <20><><EFBFBD><EFBFBD>ִ<EFBFBD><D6B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<2C>޷<EFBFBD><DEB7>ؽ<EFBFBD><D8BD><EFBFBD>(funcδִ<CEB4><D6B4>) 0:<3A><><EFBFBD><EFBFBD>ִ<EFBFBD><D6B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<2C><><EFBFBD>ؽ<EFBFBD><D8BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>funcִ<63><D6B4>. -1:<3A><><EFBFBD><EFBFBD>ִ<EFBFBD>д<EFBFBD><D0B4><EFBFBD>.(mysql_real_queryʧ<79><CAA7>) -2: <20><><EFBFBD><EFBFBD>ִ<EFBFBD><D6B4><EFBFBD><EFBFBD>ȷ,<2C><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ִ<EFBFBD><D6B4><EFBFBD>
    int exec(const std::string& SQLCommand,const std::function<void(MySQLResult&)>& func);

    /// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ
    const std::string& getError();
    unsigned int getErrCode();

    /// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    unsigned int getFieldCount();
    uint64_t getAffectedRows();

protected:
    /// <20><><EFBFBD>´<EFBFBD><C2B4><EFBFBD><EFBFBD><EFBFBD>Ϣ
    void _doUpdateError();

private:
    struct impl;
    impl* pimpl;
};