lyfz_repos/经典版源码/AdoImpl/AdoImpl.h

/*************************************************************
/* Copyright (C), 2014-2020, lyfz. Co., Ltd.
/* 文件名:		AdoImpl.h
/* 作者:		Jeff.w			 
/* 创建日期:	2014-08-16
/* 版本号:		V1.0
/* 描述:		核心层底,数据库ADO编程
/* 其它:  
/* 主要类模块: 
/* 历史修改记录: 
/*		作者           时间              版本           描述
/*	    Jeff.w         14/08/18          1.0	      创建这个模块
***************************************************************/
#ifndef __ADO_IMPL_HEADER__
#define __ADO_IMPL_HEADER__

#pragma once

#include "AdoDef.h"
#include "ADODatabase.h"
#include "ADORecordset.h"
#include "ADOCommand.h"

// 声明回调函数;
typedef int (CALLBACK *RecordsetCallback)(IN const DWORD& dwCallBackType, IN LPVOID lpParamter, IN const int& nRecordCount, IN CADORecordset* pRet);

// Jeff.一个数据库只有一个AdoImpl实例;
// 该类使用线程,监测线程的作用是判断数据库是否断开并重连;
// 未对二进制文件支持操作;
class AdoImpl
{
	CString m_strQuery;
	CString m_strLastError;
	DWORD m_dwLastError;
	inline CString GetQuery() {return m_strQuery;};
	inline void SetQuery(LPCSTR strQuery) {m_strQuery = strQuery;};

private:
	CRITICAL_SECTION m_csAdo;
	TCHAR	m_szConnectString[1024];// 暂使用1024魔数,后期升级再定义;
	CADODatabase *m_pADODatabase;

	BOOL OpenADORecordSet(IN CADORecordset *pRSet, IN LPCTSTR lpSQL, IN const int& nCursorLocation = adUseClient);
	void CloseADORecordSet(IN CADORecordset* pRSet);
	void DeleteADORecordSet(IN CADORecordset* pRSet);

public:
	AdoImpl(void);
	virtual ~AdoImpl(void);

	void SetConnectString(
		IN const int &nType,
		IN LPCTSTR lpDataSource,
		IN LPCTSTR lpDatabaseTCPPort,
		IN LPCTSTR lpDatabaseAccount,
		IN LPCTSTR lpDatabasePassWord,
		IN LPCTSTR lpDatabaseName,
		IN LPCTSTR lpDatabaseFile = NULL);
	BOOL IsOpen();
	BOOL Opendatabase(IN LPCTSTR lpConnectString = NULL);
	void Closedatabase();

	int Execute(IN LPCTSTR lpSQL);//不返回记录集;
	bool GetADODateBaseStatus();
	CADODatabase *GetAdoDatabase(){return m_pADODatabase;};

	// 应用层接口;
public:
	DWORD GetTableRecordCount(IN LPCTSTR lpTableName, IN LPCTSTR lpFilters);	// 返回要查询的表的记录数;
	// 使用回调函数来处理具体的数据;
	int GetFieldValueList(IN LPCTSTR lpTableName, IN LPCTSTR lpFields, IN LPCTSTR lpFilters, IN const DWORD &dwCallBackType,IN LPVOID lpCallBack, IN OUT LPVOID lpParamter);
	int GetFieldValueListEx(IN LPCTSTR lpTableName, IN LPCTSTR lpFields, IN LPCTSTR lpFilters, IN const DWORD &dwCallBackType,IN LPVOID lpCallBack, IN OUT LPVOID lpParamter);
	BOOL AppenChunkFromFile(IN LPCTSTR lpTableName, IN LPCTSTR lpFieldName, IN LPCTSTR lpFileName);
	BOOL AppenChunkFromBuffer(IN LPCTSTR lpTableName, IN LPCTSTR lpFieldName, IN BYTE* lpBuffer, IN const int& nBuflen);
};

#endif