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/************** FilAMFix H Declares Source Code File (.H) **************/
/* Name: FILAMFIX.H Version 1.3 */
/* */
/* (C) Copyright to the author Olivier BERTRAND 2005 - 2014 */
/* */
/* This file contains the FIX file access method classes declares. */
/***********************************************************************/
#ifndef __FILAMFIX_H
#define __FILAMFIX_H
#include "filamtxt.h"
typedef class FIXFAM *PFIXFAM;
typedef class BGXFAM *PBGXFAM;
/***********************************************************************/
/* This is the DOS/UNIX Access Method class declaration for standard */
/* files with fixed record format (FIX, BIN) */
/***********************************************************************/
class DllExport FIXFAM : public BLKFAM {
public:
// Constructor
FIXFAM(PDOSDEF tdp);
FIXFAM(PFIXFAM txfp);
// Implementation
AMT GetAmType(void) override {return TYPE_AM_FIX;}
PTXF Duplicate(PGLOBAL g) override
{return (PTXF)new(g) FIXFAM(this);}
// Methods
int Cardinality(PGLOBAL g) override {return TXTFAM::Cardinality(g);}
int MaxBlkSize(PGLOBAL g, int s) override
{return TXTFAM::MaxBlkSize(g, s);}
bool SetPos(PGLOBAL g, int recpos) override;
int GetNextPos(void) override {return Fpos + 1;}
bool AllocateBuffer(PGLOBAL g) override;
void ResetBuffer(PGLOBAL g) override;
virtual int WriteModifiedBlock(PGLOBAL g);
int ReadBuffer(PGLOBAL g) override;
int WriteBuffer(PGLOBAL g) override;
int DeleteRecords(PGLOBAL g, int irc) override;
void CloseTableFile(PGLOBAL g, bool abort) override;
protected:
virtual bool CopyHeader(PGLOBAL g) {return false;}
bool MoveIntermediateLines(PGLOBAL g, bool *b) override;
int InitDelete(PGLOBAL g, int fpos, int spos) override;
// No additional members
}; // end of class FIXFAM
/***********************************************************************/
/* This is the DOS/UNIX Access Method class declaration for files */
/* that are standard files with columns starting at fixed offset */
/* This class is for fixed formatted files of more than 2 gigabytes. */
/***********************************************************************/
class BGXFAM : public FIXFAM {
public:
// Constructor
BGXFAM(PDOSDEF tdp);
BGXFAM(PBGXFAM txfp);
// Implementation
PTXF Duplicate(PGLOBAL g) override
{return (PTXF)new(g) BGXFAM(this);}
// Methods
int Cardinality(PGLOBAL g) override;
bool OpenTableFile(PGLOBAL g) override;
int WriteModifiedBlock(PGLOBAL g) override;
int ReadBuffer(PGLOBAL g) override;
int WriteBuffer(PGLOBAL g) override;
int DeleteRecords(PGLOBAL g, int irc) override;
void CloseTableFile(PGLOBAL g, bool abort) override;
void Rewind(void) override;
protected:
bool OpenTempFile(PGLOBAL g) override;
bool MoveIntermediateLines(PGLOBAL g, bool *b = NULL) override;
int BigRead(PGLOBAL g, HANDLE h, void *inbuf, int req);
bool BigWrite(PGLOBAL g, HANDLE h, void *inbuf, int req);
bool BigSeek(PGLOBAL g, HANDLE h, BIGINT pos
, int org = FILE_BEGIN);
// Members
HANDLE Hfile; // Handle(descriptor) to big file
HANDLE Tfile; // Handle(descriptor) to big temp file
}; // end of class BGXFAM
#endif // __FILAMFIX_H
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