blob: f27bdc7f0a5bb1e2c5e18844b22fff6c7255d9bd (
plain)
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
|
/*-------------------------------------------------------------------------
*
* tupdesc.h--
* POSTGRES tuple descriptor definitions.
*
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: tupdesc.h,v 1.8 1997/08/22 03:55:39 vadim Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef TUPDESC_H
#define TUPDESC_H
#include <nodes/pg_list.h>
#include <access/attnum.h>
#include <catalog/pg_attribute.h>
typedef struct attrDefault {
AttrNumber adnum;
char *adbin;
char *adsrc;
} AttrDefault;
typedef struct constrCheck {
char *ccname;
char *ccbin;
char *ccsrc;
} ConstrCheck;
/* This structure contains constraints of a tuple */
typedef struct tupleConstr {
AttrDefault *defval;
ConstrCheck *check;
uint16 num_defval;
uint16 num_check;
bool has_not_null;
} TupleConstr;
/*
* This structure contains all information (i.e. from Classes
* pg_attribute, pg_attrdef, pg_relcheck) for a tuple.
*/
typedef struct tupleDesc {
int natts;
/* Number of attributes in the tuple */
AttributeTupleForm *attrs;
/* attrs[N] is a pointer to the description of Attribute Number N+1. */
TupleConstr *constr;
} *TupleDesc;
extern TupleDesc CreateTemplateTupleDesc(int natts);
extern TupleDesc CreateTupleDesc(int natts, AttributeTupleForm *attrs);
extern TupleDesc CreateTupleDescCopy(TupleDesc tupdesc);
extern TupleDesc CreateTupleDescCopyConstr(TupleDesc tupdesc);
extern void FreeTupleDesc(TupleDesc tupdesc);
extern bool TupleDescInitEntry(TupleDesc desc,
AttrNumber attributeNumber,
char *attributeName,
char *typeName,
int attdim,
bool attisset);
extern TupleDesc BuildDescForRelation(List *schema, char *relname);
#endif /* TUPDESC_H */
|
