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
|
/*-------------------------------------------------------------------------
*
* btstrat.c--
* Srategy map entries for the btree indexed access method
*
* Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/hash/Attic/hashstrat.c,v 1.3 1996/10/20 08:31:51 scrappy Exp $
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "catalog/pg_attribute.h"
#include "access/attnum.h"
#include "nodes/pg_list.h"
#include "access/tupdesc.h"
#include "storage/fd.h"
#include "catalog/pg_am.h"
#include "catalog/pg_class.h"
#include "nodes/nodes.h"
#include "rewrite/prs2lock.h"
#include "access/skey.h"
#include "access/strat.h"
#include "utils/rel.h"
#include "storage/block.h"
#include "storage/off.h"
#include "storage/itemptr.h"
#include <time.h>
#include "utils/nabstime.h"
#include "access/htup.h"
#include "access/itup.h"
#include "storage/itemid.h"
#include "storage/item.h"
#include "storage/buf.h"
#include "storage/bufpage.h"
#include "access/sdir.h"
#include "access/funcindex.h"
#include "utils/tqual.h"
#include "storage/buf.h"
#include "access/relscan.h"
#include "access/hash.h"
/*
* only one valid strategy for hash tables: equality.
*/
static StrategyNumber HTNegate[1] = {
InvalidStrategy
};
static StrategyNumber HTCommute[1] = {
HTEqualStrategyNumber
};
static StrategyNumber HTNegateCommute[1] = {
InvalidStrategy
};
static StrategyEvaluationData HTEvaluationData = {
/* XXX static for simplicity */
HTMaxStrategyNumber,
(StrategyTransformMap)HTNegate,
(StrategyTransformMap)HTCommute,
(StrategyTransformMap)HTNegateCommute,
{NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL}
};
/* ----------------------------------------------------------------
* RelationGetHashStrategy
* ----------------------------------------------------------------
*/
StrategyNumber
_hash_getstrat(Relation rel,
AttrNumber attno,
RegProcedure proc)
{
StrategyNumber strat;
strat = RelationGetStrategy(rel, attno, &HTEvaluationData, proc);
Assert(StrategyNumberIsValid(strat));
return (strat);
}
bool
_hash_invokestrat(Relation rel,
AttrNumber attno,
StrategyNumber strat,
Datum left,
Datum right)
{
return (RelationInvokeStrategy(rel, &HTEvaluationData, attno, strat,
left, right));
}
|
