工程下載： http://m.shnenglu.com/Files/dyj057/AdoDbv1.0-2007-1-25.rar

前幾日看到有位大哥發布的 ADO 數據庫的封裝，到處是模板，不免有些頭暈，想起自己寫的 ADO 數據庫封裝了，首先聲明沒有模板。但根據我 3 年使用的經驗，確實很實用，

特點：

l???????? 多線程安全的。

l???????? 使用標準 C++ 數據類型，屏蔽了 com 數據類型和異常，減少了復雜性。

l???????? 操作簡單，直觀

1 ．下面是使用它進行存儲過程的例子代碼：

異常的處理請參看： http://m.shnenglu.com/dyj057/archive/2007/01/24/17944.html

#include "AdoConn.h"

#include "AdoStoredProc.h"

#include "comm_exception.h"

using namespace C2217::StdLib;

using namespace C2217::Data;

void main()

{

?????? try

?????? {

????????????? CAdoConn _conn("Provider=SQLOLEDB;Data Source=192.9.207.214;Initial Catalog=ibmsweb;User ID=sa; Password=sa;");

????????????? _conn.Open();

????????????? CAdoStoredProc sp(_conn,"Accounts_Roles_Create");

?

????????????? CAdoStringPara para("Description", "Para9", 50);

????????????? sp.AddPara(&para);

?

????????????? int count =0? ;//sp.ExecuteNonQuery();

????????????? cout << " affected cout " << count <<endl;

??????

????????????? CAdoStringPara *pStringPara = dynamic_cast<CAdoStringPara *>(sp["Description"]);

????????????? if(pStringPara)

????????????? {

???????????????????? cout << pStringPara->getValue() <<endl;

????????????? }

?

????????????? sp.ClearParameters();

?

????????????? //Read to dataset

????????????? CAdoRecordSet readResult;

????????????? sp.setSpName("Accounts_Users_Select_All");

????????????? cout << "Read affected item cout : " << sp.Execute(readResult);

?

????????????? //cout << "Read Count :" << readResult.getRecordCount() <<endl;

?????? }

?????? catch(comm_exception &e)

?????? {

????????????? SET_CATCH_POS(e);

????????????? std::cout << e;

?????? }

?????? catch(const exception &e)

?????? {

????????????? cout << e.what();

?????? }

}

2 ．讀取數據的例子：

const CAdoConn &? _conn? =S_DeviceDb::instance()->GetAdoConn();

?????? CString sql;

?????? sql.Format("select * from %s where tag_name = '%s' ",

????????????? m_tableName, GetName() );

?????? CAdoRecordSet result;

?????? int count = _conn.Execute(sql, result);

?????? if(count ==1)

?????? {

????????????? result.MoveFirst();

????????????? SetDescription( result.readStr("description").c_str());

????????????? SetUnits( result.readStr("uints").c_str());

????????????? SetType( result.readStr("data_type").c_str());

????????????? SetWritebale( result.readInt("writeable"));

????????????? SetExpress( result.readStr("cacu_express").c_str() );

????????????? SetDeviceAddress( result.readInt("device_address"));

????????????? SetRegisterAddress( result.readInt("register_address"));

????????????? SetDataLen( result.readInt("data_length"));

????????????? SetBitsStartIndex( result.readInt("start_bit_index"));

????????????? SetBitsCount( result.readInt("bit_count"));

?????? }

3 ．刪除數據的例子：

const CAdoConn &? _conn? =S_DeviceDb::instance()->GetAdoConn();

?????? CString sql;

?????? sql.Format("delete from %s where tag_name = '%s'", m_tableName, GetName() );

?????? _conn.ExecuteNonQuery( sql);

4 ．更新數據的例子：

const CAdoConn & ?_conn? =S_DeviceDb::instance()->GetAdoConn();

?????? CString sql;

?????? sql.Format("update %s set description='%s',? uints='%s', data_type='%s',\

???????????????????? ?? writeable=%d, cacu_express='%s', device_address=%d, register_address=%d, data_length =%d,\

???????????????????? ?? start_bit_index = %d, bit_count = %d where tag_name = '%s' ", m_tableName, GetDescription(), GetUnits(), GetType(),

???????????????????? ?? IsWriteable(), GetExpress(), GetDeviceAddress(), GetRegisterAddress(), GetDataLen(), GetBitsStartIndex(), GetBitsCount(), GetName() );

??????

?????? VERIFY(_conn.ExecuteNonQuery(sql));