#ifndef _MANAGE_TOOL_DB_FILE_DB_LIB_SQL_LITE_
#define _MANAGE_TOOL_DB_FILE_DB_LIB_SQL_LITE_

// forward decl;
typedef struct sqlite_vm sqlite_vm;
typedef struct sqlite sqlite;

class CSQLite
{
public:

	typedef int (*QueryCallBack)(void *callBackArg, int nColumnNum, 
		char **szColumnValues, char **szColumnNames);

	CSQLite();
	virtual ~CSQLite();

	bool Open(const char* szFileName);
	void Close();

	int GetLastInsertRowID();
	bool ExecuteQuery(const char* szQuery, QueryCallBack callBack, void* callBackArg);
	const char* GetLastError() const { return m_szErrorMsg; }

    void SetErrorLog(bool bLogError) { m_bLogError = bLogError; }
    bool IsErrorLogging() { return m_bLogError; }

	class Dataset
	{
	public:

		Dataset(CSQLite& sqlite, const char* szQuery);
		~Dataset();

		// 쿼리를 컴파일해서 처리 준비를 한다.
		bool Compile();

		// 쿼리를 실행하고 결과를 얻어온다.
		bool Execute(int* nColNum_Out = 0, 
			const char ***pazValue = 0, 
			const char *** pazColName = 0);
		
		bool IsExcuteDone();

		const char* GetLastError() const { return m_szErrorMsg; }
		void Free();

	private:
	    
		CSQLite&	m_SQLite;
		sqlite_vm*	m_sqlite_vm;
		const char*	m_szQuery;
		char*		m_szErrorMsg;
		int			m_nExecuteResult;
	};

	class Tableset
	{
	public:

		Tableset(CSQLite& sqlite, const char* szQuery);
		~Tableset();

        bool Execute();

		char** GetResult() { return m_szResult; }
		int GetMaxRow() { return m_nRow; }
		int GetMaxCol() { return m_nCol; }

		const char* GetLastError() const { return m_szErrorMsg; }

	private:

		CSQLite&	m_SQLite;
		const char*	m_szQuery;
		char**		m_szResult;
		int			m_nRow;
		int			m_nCol;		
		char*		m_szErrorMsg;
	};

private:

	sqlite* GetHandle() { return m_sqlDB; }
	sqlite*	m_sqlDB;
	char*	m_szErrorMsg;
    bool    m_bLogError;

	friend class Dataset;
	friend class Tableset;
};

#endif