constgamedata.h

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// ConstGameData.h: interface for the CGameMapData class.
// paled, modify in 2003.8.26
//////////////////////////////////////////////////////////////////////

#if !defined(CONST_GAMEDATA_HEAD3)
#define CONST_GAMEDATA_HEAD3

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include "I_mydb.h"

//////////////////////////////////////////////////////////////////////
template<TYPENAME T, char* TBL, T KEY>
class CConstGameData //: IGameData<T>
{
protected:
	CConstGameData()											{ m_pRecord = NULL; m_idKey = ID_NONE; }
	virtual ~CConstGameData()								{ if(m_pRecord) m_pRecord->Release(); }
public: // construct
//	static bool			Init(IDatabase* pDb);
	static CConstGameData*	CreateNew()						{ return new CConstGameData; }
	virtual void		Release()						{ delete this; }
//	static void			Final()							{ if(m_pDefaultRes) m_pDefaultRes->Release(); m_pDefaultRes=NULL; }	// 可重复调用
	IGameData*			QueryInterface()				{ return (IGameData*)this; }
public: // by set
	virtual void		ReleaseByOwner()				{ delete this; }
	OBJID		GetID()									{ return m_idKey; }
public:
	OBJID		GetKey()								{ return m_idKey; }
	int			GetInt(T nDataName)						{ return m_pRecord->GetInt(nDataName); }
	LPCTSTR		GetStr(T nDataName)						{ return m_pRecord->GetStr(nDataName); }
/*public: // IGameData
	int			GetInt(int nDataName)						{ return GetInt_((T)nDataName); }
	LPCTSTR		GetStr(int nDataName)						{ return GetStr_((T)nDataName); }
	void		SetInt(int nDataName, int nData)			{ SetInt_((T)nDataName, nData); }
	void		SetStr(int nDataName, LPCTSTR szData, int nSize)		{ SetStr_((T)nDataName, szData, nSize); }
*/
public:
	bool		Create(OBJID id, IDatabase* pDb);				// 装入数据
	bool		Create(IRecordset* pRecordset)			{ m_pRecord = pRecordset->CreateNewConstRecord(); 
															if(m_pRecord) m_idKey	= m_pRecord->GetInt(KEY); 
															return m_pRecord != NULL; }
	IRecord*	GetRecord()								{ ASSERT(m_pRecord); return m_pRecord; }
protected:
	IRecord*	m_pRecord;
	OBJID		m_idKey;


//	MYHEAP_DECLARATION(s_heap)
};

template<TYPENAME T, char* TBL, T KEY>
bool CConstGameData<T,TBL,KEY>::Create(OBJID id, IDatabase* pDb)
{
	CHECKF(pDb);

	char	szSQL[1024];
	sprintf(szSQL, "SELECT * FROM %s WHERE %s=%u LIMIT 1", TBL, KEY, id);
	IRecordset* pRes = pDb->CreateNewRecordset(szSQL, false);
	m_pRecord	= pRes->CreateNewRecord();
	pRes->Release();			//?? IRecordset暂不支持修改KEY值

	if(m_pRecord)
		m_idKey	= m_pRecord->GetInt(KEY);

	return m_pRecord != NULL;
}


#endif // !defined(CONST_GAMEDATA_HEAD3)