summaryrefslogtreecommitdiffstats
path: root/contrib/btree_gist/btree_bytea.c
blob: 6b005f0157e29b1e0b059ae636a352b0596f3c04 (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
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
/*
 * contrib/btree_gist/btree_bytea.c
 */
#include "postgres.h"

#include "btree_gist.h"
#include "btree_utils_var.h"
#include "utils/builtins.h"
#include "utils/bytea.h"


/*
** Bytea ops
*/
PG_FUNCTION_INFO_V1(gbt_bytea_compress);
PG_FUNCTION_INFO_V1(gbt_bytea_union);
PG_FUNCTION_INFO_V1(gbt_bytea_picksplit);
PG_FUNCTION_INFO_V1(gbt_bytea_consistent);
PG_FUNCTION_INFO_V1(gbt_bytea_penalty);
PG_FUNCTION_INFO_V1(gbt_bytea_same);


/* define for comparison */

static bool
gbt_byteagt(const void *a, const void *b, Oid collation, FmgrInfo *flinfo)
{
	return DatumGetBool(DirectFunctionCall2(byteagt,
											PointerGetDatum(a),
											PointerGetDatum(b)));
}

static bool
gbt_byteage(const void *a, const void *b, Oid collation, FmgrInfo *flinfo)
{
	return DatumGetBool(DirectFunctionCall2(byteage,
											PointerGetDatum(a),
											PointerGetDatum(b)));
}

static bool
gbt_byteaeq(const void *a, const void *b, Oid collation, FmgrInfo *flinfo)
{
	return DatumGetBool(DirectFunctionCall2(byteaeq,
											PointerGetDatum(a),
											PointerGetDatum(b)));
}

static bool
gbt_byteale(const void *a, const void *b, Oid collation, FmgrInfo *flinfo)
{
	return DatumGetBool(DirectFunctionCall2(byteale,
											PointerGetDatum(a),
											PointerGetDatum(b)));
}

static bool
gbt_bytealt(const void *a, const void *b, Oid collation, FmgrInfo *flinfo)
{
	return DatumGetBool(DirectFunctionCall2(bytealt,
											PointerGetDatum(a),
											PointerGetDatum(b)));
}

static int32
gbt_byteacmp(const void *a, const void *b, Oid collation, FmgrInfo *flinfo)
{
	return DatumGetInt32(DirectFunctionCall2(byteacmp,
											 PointerGetDatum(a),
											 PointerGetDatum(b)));
}


static const gbtree_vinfo tinfo =
{
	gbt_t_bytea,
	0,
	true,
	gbt_byteagt,
	gbt_byteage,
	gbt_byteaeq,
	gbt_byteale,
	gbt_bytealt,
	gbt_byteacmp,
	NULL
};


/**************************************************
 * Text ops
 **************************************************/


Datum
gbt_bytea_compress(PG_FUNCTION_ARGS)
{
	GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);

	PG_RETURN_POINTER(gbt_var_compress(entry, &tinfo));
}



Datum
gbt_bytea_consistent(PG_FUNCTION_ARGS)
{
	GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
	void	   *query = (void *) DatumGetByteaP(PG_GETARG_DATUM(1));
	StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);

	/* Oid		subtype = PG_GETARG_OID(3); */
	bool	   *recheck = (bool *) PG_GETARG_POINTER(4);
	bool		retval;
	GBT_VARKEY *key = (GBT_VARKEY *) DatumGetPointer(entry->key);
	GBT_VARKEY_R r = gbt_var_key_readable(key);

	/* All cases served by this function are exact */
	*recheck = false;

	retval = gbt_var_consistent(&r, query, strategy, PG_GET_COLLATION(),
								GIST_LEAF(entry), &tinfo, fcinfo->flinfo);
	PG_RETURN_BOOL(retval);
}



Datum
gbt_bytea_union(PG_FUNCTION_ARGS)
{
	GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
	int32	   *size = (int *) PG_GETARG_POINTER(1);

	PG_RETURN_POINTER(gbt_var_union(entryvec, size, PG_GET_COLLATION(),
									&tinfo, fcinfo->flinfo));
}


Datum
gbt_bytea_picksplit(PG_FUNCTION_ARGS)
{
	GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
	GIST_SPLITVEC *v = (GIST_SPLITVEC *) PG_GETARG_POINTER(1);

	gbt_var_picksplit(entryvec, v, PG_GET_COLLATION(),
					  &tinfo, fcinfo->flinfo);
	PG_RETURN_POINTER(v);
}

Datum
gbt_bytea_same(PG_FUNCTION_ARGS)
{
	Datum		d1 = PG_GETARG_DATUM(0);
	Datum		d2 = PG_GETARG_DATUM(1);
	bool	   *result = (bool *) PG_GETARG_POINTER(2);

	*result = gbt_var_same(d1, d2, PG_GET_COLLATION(), &tinfo, fcinfo->flinfo);
	PG_RETURN_POINTER(result);
}


Datum
gbt_bytea_penalty(PG_FUNCTION_ARGS)
{
	GISTENTRY  *o = (GISTENTRY *) PG_GETARG_POINTER(0);
	GISTENTRY  *n = (GISTENTRY *) PG_GETARG_POINTER(1);
	float	   *result = (float *) PG_GETARG_POINTER(2);

	PG_RETURN_POINTER(gbt_var_penalty(result, o, n, PG_GET_COLLATION(),
									  &tinfo, fcinfo->flinfo));
}