ds_database.h

内存数据库

#ifndef __DS_DATABASE_H__
#define __DS_DATABASE_H__

typedef int             BOOL;       /* b  */
#define FALSE           0
#define TRUE            1

typedef unsigned char   BYTE;       /* by   */
typedef unsigned short  WORD;       /* w    */
typedef signed   short  SHORT;      /* sn   */
typedef int             INT;        /* n    */
typedef unsigned int    UINT;       /* n    */
typedef unsigned long   DWORD;      /* dw   */
typedef signed   long   LONG;       /* l    */
typedef float           FLOAT;      /* f    */


#define FT_NULL		0
#define FT_I1		1
#define FT_UI1		FT_I1+1
#define FT_I2		FT_I1+2
#define FT_UI2		FT_I1+3
#define FT_I4		FT_I1+4
#define FT_UI4		FT_I1+5
#define FT_R4		FT_I1+6
#define FT_R8		FT_I1+7

#define FT_BYTE		FT_UI1
#define FT_CHAR		FT_I1
#define FT_WORD		FT_UI2
#define FT_SHORT	FT_I2
#define FT_DWORD	FT_UI4
#define FT_LONG		FT_I4
#define FT_FLOAT	FT_R4
#define FT_DOUBLE	FT_R8
#define FT_INT		FT_I1+8
#define FT_STR		FT_I1+9
#define FT_VOID		FT_I1+10


#define TABLE_NAME_MAXLEN			20
#define FIELD_NAME_MAXLEN			10
#define VIEW_NAME_MAXLEN			20



#define	HTABLE			void*
#define HVIEW			void*
#define VPOSITION		void*



typedef enum
{

	OPER_ADD,
	OPER_DELETE,
	OPER_MODIFY,

}OPER_TYPE;


typedef struct
{
	UINT		index;
	char		name[FIELD_NAME_MAXLEN+1];      
	BYTE		type;               
	long		size;
	
}TB_FIELD;


typedef struct{

	union {
		char                    cVal;                 // FT_I1.
		BYTE                    bVal;                 // FT_UI1.
		short                   iVal;                 // FT_I2.
		unsigned short          uiVal;                // FT_UI2.
		long                    lVal;                 // FT_I4.
		unsigned long           ulVal;                // FT_UI4.
		float                   fltVal;               // FT_R4.
//		double                  dblVal;               // FT_R8.
		int						intVal;				  // FT_INT
		char*					pStrVal;			  // FT_STR
		void*					pVoidVal;			  // FT_VOID		
    };
	
}TB_VARIANT;

typedef long	(*DSV_FILTERPROC)( HVIEW hView, VPOSITION pos );
typedef long	(*DSV_COMPAREPROC)( TB_VARIANT*, TB_VARIANT*, BYTE );
typedef	void	(*DSV_NOTIFYPROC)( HVIEW hView, OPER_TYPE, VPOSITION pos, INT field );



//////////////////////    Table    /////////////////////////////////////////
HTABLE	DST_CreateTable( const char* table_name, UINT field_num );
BOOL	DST_DestroyTable( HTABLE hTable );
BOOL	DST_SetFieldInfo( HTABLE hTable, UINT field_index, TB_FIELD fieldinfo );
BOOL	DST_GetFieldInfo( HTABLE hTable, UINT field_index, TB_FIELD* fieldinfo );
BOOL	DST_AddRecord( HTABLE hTable );
BOOL	DST_DeleteCurRecord( HTABLE hTable );
BOOL	DST_SetFieldValue( HTABLE hTable, UINT field_index, TB_VARIANT field_value );
BOOL	DST_GetFieldValue( HTABLE hTable, UINT field_index, TB_VARIANT* field_value );
void	DST_MoveNext( HTABLE hTable );
void	DST_MovePrev( HTABLE hTable );
void	DST_MoveFirst( HTABLE hTable );
void	DST_MoveLast( HTABLE hTable );
int		DST_GetRecordCount( HTABLE hTable );
BOOL	DST_IsTable( HTABLE hTable );
BYTE	DST_GetFieldType( HTABLE hTable, UINT field_index );


//////////////////////    View    /////////////////////////////////////////
HVIEW	DSV_CreateView( HTABLE hTable, const char* view_name, UINT field_num );
BOOL	DSV_DestroyView( HVIEW hView );
BOOL	DSV_GetFieldInfo( HVIEW hView, UINT field_index, TB_FIELD* fieldinfo );
BOOL	DSV_AttachField( HVIEW hView, UINT view_field, UINT table_field );
BOOL	DSV_GetFieldInfo( HVIEW hView, UINT field_index, TB_FIELD* fieldinfo );
BOOL	DSV_AddRecord( HVIEW hView );
BOOL	DSV_DeleteRecord( HVIEW hView );
BOOL	DSV_SetFieldValue( HVIEW hView, UINT field_index, TB_VARIANT field_value );
BOOL	DSV_GetFieldValue( HVIEW hView, UINT field_index, TB_VARIANT* field_value );
void	DSV_MoveNext( HVIEW hView );
void	DSV_MovePrev( HVIEW hView );
void	DSV_MoveFirst( HVIEW hView );
void	DSV_MoveLast( HVIEW hView );
int		DSV_GetRecordCount( HVIEW hView );
BOOL	DSV_IsView( HVIEW hView );
void	DSV_RefreshView( HVIEW hView );
void	DSV_Clear( HVIEW hView );
BOOL	DSV_IsEOF( HVIEW hView );
BOOL	DSV_IsBOF( HVIEW hView );
void	DSV_SetAbsolutePostion( HVIEW hView, VPOSITION pos );
INT		DSV_GetFieldCount( HVIEW hView );
BOOL	DSV_SetOrder( HVIEW hView, UINT field, DSV_COMPAREPROC compareproc );
BOOL	DSV_SetFilter( HVIEW hView, DSV_FILTERPROC filterproc );
BOOL	DSV_SetNotify( HVIEW hView, DSV_NOTIFYPROC notifyproc );
INT		DSV_GetRecordIndex( HVIEW hView );
BOOL	DSV_CreateMainIndex( HVIEW hView );
BOOL	DSV_SetAbsoluteIndex( HVIEW hView, UINT record_index );


#endif