封装数据库类模拟 auto_ptr

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class CRecordsetObject
{
public:
    CRecordset* __init;
public:
    inline CRecordset* operator->()
    {
        return __init;
    }
    CRecordsetObject(CDatabase* pDatabase);
    ~CRecordsetObject(void);
 
private:
    CRecordsetObject operator=(const CRecordsetObject&);
    CRecordsetObject (const CRecordsetObject&);
    CRecordsetObject ();
};
 
CRecordsetObject::CRecordsetObject(CDatabase* pDatabase)
:__init(NULL)
{
	__init = new CRecordset(pDatabase);
}
 
CRecordsetObject::~CRecordsetObject(void)
{
	if (NULL != __init)
	{
		delete __init;
		__init = NULL;
	}
}
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CRecordsetObject Object(pDatabase);
Object->m_strFilter.Format("");
// 不用关心内存的释放了