blob: 4f47c0e224e0a3c792a66187776d4ee59d3b49db (
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
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
/*-------------------------------------------------------------------------
*
* strat.h
* index strategy type definitions
* (separated out from original istrat.h to avoid circular refs)
*
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: strat.h,v 1.12 1999/02/13 23:20:58 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef STRAT_H
#define STRAT_H
#include <access/skey.h>
typedef uint16 StrategyNumber;
#define InvalidStrategy 0
typedef struct StrategyTransformMapData
{
StrategyNumber strategy[1]; /* VARIABLE LENGTH ARRAY */
} StrategyTransformMapData; /* VARIABLE LENGTH
*
*
*
*
*
*
* STRUCTURE */
typedef StrategyTransformMapData *StrategyTransformMap;
typedef struct StrategyOperatorData
{
StrategyNumber strategy;
bits16 flags; /* scan qualification flags h/skey.h */
} StrategyOperatorData;
typedef StrategyOperatorData *StrategyOperator;
typedef struct StrategyTermData
{ /* conjunctive term */
uint16 degree;
StrategyOperatorData operatorData[1]; /* VARIABLE LENGTH */
} StrategyTermData; /* VARIABLE LENGTH STRUCTURE */
typedef StrategyTermData *StrategyTerm;
typedef struct StrategyExpressionData
{ /* disjunctive normal form */
StrategyTerm term[1]; /* VARIABLE LENGTH ARRAY */
} StrategyExpressionData; /* VARIABLE LENGTH STRUCTURE */
typedef StrategyExpressionData *StrategyExpression;
typedef struct StrategyEvaluationData
{
StrategyNumber maxStrategy;
StrategyTransformMap negateTransform;
StrategyTransformMap commuteTransform;
StrategyTransformMap negateCommuteTransform;
StrategyExpression expression[12]; /* XXX VARIABLE LENGTH */
} StrategyEvaluationData; /* VARIABLE LENGTH STRUCTURE */
typedef StrategyEvaluationData *StrategyEvaluation;
/*
* StrategyTransformMapIsValid
* Returns true iff strategy transformation map is valid.
*/
#define StrategyTransformMapIsValid(transform) PointerIsValid(transform)
#define AMStrategies(foo) (foo)
typedef struct StrategyMapData
{
ScanKeyData entry[1]; /* VARIABLE LENGTH ARRAY */
} StrategyMapData; /* VARIABLE LENGTH STRUCTURE */
typedef StrategyMapData *StrategyMap;
typedef struct IndexStrategyData
{
StrategyMapData strategyMapData[1]; /* VARIABLE LENGTH ARRAY */
} IndexStrategyData; /* VARIABLE LENGTH STRUCTURE */
typedef IndexStrategyData *IndexStrategy;
#endif /* STRAT_H */
|
