1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/*************** 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 CopyOne(PTABS t);
// 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 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__
|
