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
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
|
/*************** Colblk H Declares Source Code File (.H) ***************/
/* Name: COLBLK.H Version 1.7 */
/* */
/* (C) Copyright to the author Olivier BERTRAND 2005-2019 */
/* */
/* This file contains the COLBLK and derived classes declares. */
/***********************************************************************/
#ifndef __COLBLK__H
#define __COLBLK__H
/***********************************************************************/
/* Include required application header files */
/***********************************************************************/
#include "xobject.h"
#include "reldef.h"
/***********************************************************************/
/* Class COLBLK: Base class for table column descriptors. */
/***********************************************************************/
class DllExport COLBLK : public XOBJECT {
friend class TDBPIVOT;
protected:
// Default constructors used by derived classes
COLBLK(PCOLDEF cdp = NULL, PTDB tdbp = NULL, int i = 0);
COLBLK(PCOL colp, PTDB tdbp = NULL); // Used in copy process
COLBLK(int) {} // Used when changing a column class in TDBXML
public:
// Implementation
virtual int GetType(void) {return TYPE_COLBLK;}
virtual int GetResultType(void) {return Buf_Type;}
virtual int GetScale(void) {return Format.Prec;}
virtual int GetPrecision(void) {return Precision;}
virtual int GetLength(void) {return Long;}
virtual int GetLengthEx(void);
virtual int GetAmType() {return TYPE_AM_ERROR;}
virtual void SetOk(void) {Status |= BUF_EMPTY;}
virtual PTDB GetTo_Tdb(void) {return To_Tdb;}
virtual int GetClustered(void) {return 0;}
virtual int IsClustered(void) {return FALSE;}
virtual bool Stringify(void) {return FALSE;}
virtual PSZ GetJpath(PGLOBAL g, bool proj) {return NULL;}
PCOL GetNext(void) {return Next;}
PSZ GetName(void) {return Name;}
int GetIndex(void) {return Index;}
ushort GetColUse(void) {return ColUse;}
int GetOpt(void) {return Opt;}
ushort GetColUse(ushort u) {return (ColUse & u);}
ushort GetStatus(void) {return Status;}
ushort GetStatus(ushort u) {return (Status & u);}
void SetColUse(ushort u) {ColUse = u;}
void SetStatus(ushort u) {Status = u;}
void AddColUse(ushort u) {ColUse |= u;}
void AddStatus(ushort u) {Status |= u;}
void SetNext(PCOL cp) {Next = cp;}
PXCOL GetKcol(void) {return To_Kcol;}
void SetKcol(PXCOL kcp) {To_Kcol = kcp;}
PCOLDEF GetCdp(void) {return Cdp;}
PSZ GetDomain(void) {return (Cdp) ? Cdp->Decode : NULL;}
PSZ GetDesc(void) {return (Cdp) ? Cdp->Desc : NULL;}
PSZ GetFmt(void) {return (Cdp) ? Cdp->Fmt : NULL;}
bool IsUnsigned(void) {return Unsigned;}
bool IsVirtual(void) {return Cdp->IsVirtual();}
bool IsNullable(void) {return Nullable;}
void SetNullable(bool b) {Nullable = b;}
void SetName(PSZ name_var) { Name= name_var; }
// Methods
virtual void Reset(void);
virtual bool Compare(PXOB xp);
virtual bool SetFormat(PGLOBAL, FORMAT&);
virtual bool IsSpecial(void) {return false;}
virtual bool Eval(PGLOBAL g);
virtual bool SetBuffer(PGLOBAL g, PVAL value, bool ok, bool check);
virtual void SetTo_Val(PVAL) {}
virtual void ReadColumn(PGLOBAL g);
virtual void WriteColumn(PGLOBAL g);
virtual void Printf(PGLOBAL g, FILE *, uint);
virtual void Prints(PGLOBAL g, char *, uint);
virtual bool VarSize(void) {return false;}
bool InitValue(PGLOBAL g);
protected:
// Members
PCOL Next; // Next column in table
PSZ Name; // Column name
PCOLDEF Cdp; // To column definition block
PTDB To_Tdb; // Points to Table Descriptor Block
PXCOL To_Kcol; // Points to Xindex matching column
bool Nullable; // True if nullable
bool Unsigned; // True if unsigned
int Index; // Column number in table
int Opt; // Cluster/sort information
int Buf_Type; // Data type
int Long; // Internal length in table
int Precision; // Column length (as for ODBC)
int Freq; // Evaluated ceiling of distinct values
FORMAT Format; // Output format
ushort ColUse; // Column usage
ushort Status; // Column read status
}; // end of class COLBLK
/***********************************************************************/
/* Class SPCBLK: Base class for special column descriptors. */
/***********************************************************************/
class DllExport SPCBLK : public COLBLK {
public:
// Constructor
SPCBLK(PCOLUMN cp);
// Implementation
virtual int GetAmType(void) = 0;
virtual bool GetRnm(void) {return false;}
// Methods
virtual bool IsSpecial(void) {return true;}
virtual void ReadColumn(PGLOBAL g) = 0;
virtual void WriteColumn(PGLOBAL g);
protected:
// Default constructor not to be used
SPCBLK(void) : COLBLK(1) {}
}; // end of class SPCBLK
/***********************************************************************/
/* Class RIDBLK: ROWID special column descriptor. */
/***********************************************************************/
class DllExport RIDBLK : public SPCBLK {
public:
// Constructor
RIDBLK(PCOLUMN cp, bool rnm);
// Implementation
virtual int GetAmType(void) {return TYPE_AM_ROWID;}
virtual bool GetRnm(void) {return Rnm;}
// Methods
virtual void ReadColumn(PGLOBAL g);
protected:
bool Rnm; // False for RowID, True for RowNum
}; // end of class RIDBLK
/***********************************************************************/
/* Class FIDBLK: FILEID special column descriptor. */
/***********************************************************************/
class DllExport FIDBLK : public SPCBLK {
public:
// Constructor
FIDBLK(PCOLUMN cp, OPVAL op);
// Implementation
virtual int GetAmType(void) {return TYPE_AM_FILID;}
// Methods
virtual void Reset(void) {} // This is a pseudo constant column
virtual void ReadColumn(PGLOBAL g);
protected:
PCSZ Fn; // The current To_File of the table
OPVAL Op; // The file part operator
}; // end of class FIDBLK
/***********************************************************************/
/* Class TIDBLK: TABID special column descriptor. */
/***********************************************************************/
class DllExport TIDBLK : public SPCBLK {
public:
// Constructor
TIDBLK(PCOLUMN cp);
// Implementation
virtual int GetAmType(void) {return TYPE_AM_TABID;}
// Methods
virtual void Reset(void) {} // This is a pseudo constant column
virtual void ReadColumn(PGLOBAL g);
protected:
// Default constructor not to be used
TIDBLK(void) = default;
// Members
PCSZ Tname; // The current table name
}; // end of class TIDBLK
/***********************************************************************/
/* Class PRTBLK: PARTID special column descriptor. */
/***********************************************************************/
class DllExport PRTBLK : public SPCBLK {
public:
// Constructor
PRTBLK(PCOLUMN cp);
// Implementation
virtual int GetAmType(void) {return TYPE_AM_PRTID;}
// Methods
virtual void Reset(void) {} // This is a pseudo constant column
virtual void ReadColumn(PGLOBAL g);
protected:
// Default constructor not to be used
PRTBLK(void) = default;
// Members
PCSZ Pname; // The current partition name
}; // end of class PRTBLK
/***********************************************************************/
/* Class SIDBLK: SERVID special column descriptor. */
/***********************************************************************/
class DllExport SIDBLK : public SPCBLK {
public:
// Constructor
SIDBLK(PCOLUMN cp);
// Implementation
virtual int GetAmType(void) {return TYPE_AM_SRVID;}
// Methods
virtual void Reset(void) {} // This is a pseudo constant column
virtual void ReadColumn(PGLOBAL g);
protected:
// Default constructor not to be used
SIDBLK(void) = default;
// Members
PCSZ Sname; // The current server name
}; // end of class SIDBLK
#endif // __COLBLK__H
|
