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Diffstat (limited to 'storage/connect/tabvct.h')
-rw-r--r-- | storage/connect/tabvct.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/storage/connect/tabvct.h b/storage/connect/tabvct.h new file mode 100644 index 00000000..06ccde71 --- /dev/null +++ b/storage/connect/tabvct.h @@ -0,0 +1,124 @@ +/*************** TabVct H Declares Source Code File (.H) ***************/ +/* Name: TABVCT.H Version 3.4 */ +/* */ +/* (C) Copyright to the author Olivier BERTRAND 1999-2011 */ +/* */ +/* This file contains the TDBVCT class declares. */ +/***********************************************************************/ +#ifndef __TABVCT__ +#define __TABVCT__ + +#include "tabfix.h" +#if defined(UNIX) +//#include <string.h.SUNWCCh> +#endif + +typedef class TDBVCT *PTDBVCT; +typedef class VCTCOL *PVCTCOL; + +/***********************************************************************/ +/* VCT table. */ +/***********************************************************************/ +class DllExport VCTDEF : public DOSDEF { /* Logical table description */ + friend class TDBVCT; + friend class VCTFAM; + friend class VECFAM; + friend class VMPFAM; + public: + // Constructor + VCTDEF(void) {Split = false; Estimate = Header = 0;} + + // Implementation + virtual const char *GetType(void) {return "VCT";} + int GetEstimate(void) {return Estimate;} + + // Methods + virtual bool DefineAM(PGLOBAL g, LPCSTR am, int poff); + virtual PTDB GetTable(PGLOBAL g, MODE mode); + + protected: + int MakeFnPattern(char *fpat); + + // Members + bool Split; /* Columns in separate files */ + int Estimate; /* Estimated maximum size of table */ + int Header; /* 0: no, 1: separate, 2: in data file */ + }; // end of VCTDEF + +/***********************************************************************/ +/* This is the DOS/UNIX Access Method class declaration for files */ +/* in blocked vector format. In each block containing "Elements" */ +/* records, values of each columns are consecutively stored (vector). */ +/***********************************************************************/ +class DllExport TDBVCT : public TDBFIX { + friend class VCTCOL; + friend class VCTFAM; + friend class VCMFAM; + friend class VECFAM; + friend class VMPFAM; + public: + // Constructors + TDBVCT(PVCTDEF tdp, PTXF txfp); + TDBVCT(PGLOBAL g, PTDBVCT tdbp); + + // Implementation + virtual AMT GetAmType(void) {return TYPE_AM_VCT;} + virtual PTDB Duplicate(PGLOBAL g) + {return (PTDB)new(g) TDBVCT(g, this);} + bool IsSplit(void) {return ((VCTDEF*)To_Def)->Split;} + + // Methods + virtual PTDB Clone(PTABS t); + virtual bool IsUsingTemp(PGLOBAL g); + + // Database routines + virtual PCOL MakeCol(PGLOBAL g, PCOLDEF cdp, PCOL cprec, int n); + virtual bool OpenDB(PGLOBAL g); + virtual int ReadDB(PGLOBAL g); + virtual void CloseDB(PGLOBAL g); + + protected: + // Members + }; // end of class TDBVCT + +/***********************************************************************/ +/* Class VCTCOL: VCT access method column descriptor. */ +/* This A.M. is used for file having column wise organization. */ +/***********************************************************************/ +class DllExport VCTCOL : public DOSCOL { + friend class TDBVCT; + friend class VCTFAM; + friend class VCMFAM; + friend class VECFAM; + friend class VMPFAM; + friend class BGVFAM; + public: + // Constructors + VCTCOL(PGLOBAL g, PCOLDEF cdp, PTDB tdbp, PCOL cprec, int i); + VCTCOL(VCTCOL *colp, PTDB tdbp); // Constructor used in copy process + + // Implementation + virtual int GetAmType(void) {return TYPE_AM_VCT;} + + // Methods + virtual void ReadColumn(PGLOBAL g); + virtual void WriteColumn(PGLOBAL g); + virtual bool SetBuffer(PGLOBAL g, PVAL value, bool ok, bool check); + virtual void SetOk(void); + + protected: + virtual void ReadBlock(PGLOBAL g); + virtual void WriteBlock(PGLOBAL g); + + VCTCOL(void) = default; // Default constructor not to be used + + // Members + PVBLK Blk; // Block buffer + int Clen; // Internal length in table + int ColBlk; // Block pointed by column + int ColPos; // Last position read + int Modif; // Number of modified lines in block + }; // end of class VCTCOL + +#endif // __TABVCT__ + |