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90 lines
3.3 KiB
C++
90 lines
3.3 KiB
C++
/************** FilAMFix H Declares Source Code File (.H) **************/
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/* Name: FILAMFIX.H Version 1.2 */
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/* */
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/* (C) Copyright to the author Olivier BERTRAND 2005 - 2012 */
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/* */
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/* This file contains the FIX file access method classes declares. */
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/***********************************************************************/
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#ifndef __FILAMFIX_H
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#define __FILAMFIX_H
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#include "filamtxt.h"
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typedef class FIXFAM *PFIXFAM;
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typedef class BGXFAM *PBGXFAM;
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/***********************************************************************/
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/* This is the DOS/UNIX Access Method class declaration for standard */
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/* files with fixed record format (FIX, BIN) */
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/***********************************************************************/
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class DllExport FIXFAM : public BLKFAM {
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public:
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// Constructor
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FIXFAM(PDOSDEF tdp);
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FIXFAM(PFIXFAM txfp);
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// Implementation
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virtual AMT GetAmType(void) {return TYPE_AM_FIX;}
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virtual PTXF Duplicate(PGLOBAL g)
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{return (PTXF)new(g) FIXFAM(this);}
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// Methods
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virtual int Cardinality(PGLOBAL g) {return TXTFAM::Cardinality(g);}
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virtual int MaxBlkSize(PGLOBAL g, int s)
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{return TXTFAM::MaxBlkSize(g, s);}
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virtual bool AllocateBuffer(PGLOBAL g);
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virtual void ResetBuffer(PGLOBAL g);
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virtual int ReadBuffer(PGLOBAL g);
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virtual int WriteBuffer(PGLOBAL g);
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virtual int DeleteRecords(PGLOBAL g, int irc);
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virtual void CloseTableFile(PGLOBAL g);
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protected:
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virtual bool CopyHeader(PGLOBAL g) {return false;}
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virtual bool MoveIntermediateLines(PGLOBAL g, bool *b);
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// No additional members
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}; // end of class FIXFAM
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/***********************************************************************/
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/* This is the DOS/UNIX Access Method class declaration for files */
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/* that are standard files with columns starting at fixed offset */
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/* This class is for fixed formatted files of more than 2 gigabytes. */
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/***********************************************************************/
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class BGXFAM : public FIXFAM {
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public:
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// Constructor
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BGXFAM(PDOSDEF tdp);
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BGXFAM(PBGXFAM txfp);
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// Implementation
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virtual PTXF Duplicate(PGLOBAL g)
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{return (PTXF)new(g) BGXFAM(this);}
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// Methods
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//virtual void Reset(void);
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virtual int Cardinality(PGLOBAL g);
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virtual bool OpenTableFile(PGLOBAL g);
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virtual int ReadBuffer(PGLOBAL g);
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virtual int WriteBuffer(PGLOBAL g);
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virtual int DeleteRecords(PGLOBAL g, int irc);
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virtual void CloseTableFile(PGLOBAL g);
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virtual void Rewind(void);
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protected:
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bool BigSeek(PGLOBAL g, HANDLE h, BIGINT pos
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, int org = FILE_BEGIN);
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int BigRead(PGLOBAL g, HANDLE h, void *inbuf, int req);
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bool BigWrite(PGLOBAL g, HANDLE h, void *inbuf, int req);
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virtual bool OpenTempFile(PGLOBAL g);
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virtual bool MoveIntermediateLines(PGLOBAL g, bool *b = NULL);
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// Members
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HANDLE Hfile; // Handle(descriptor) to big file
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HANDLE Tfile; // Handle(descriptor) to big temp file
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//BIGINT Xpos; // Current file position
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}; // end of class BGXFAM
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#endif // __FILAMFIX_H
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