Line data Source code
1 : /*
2 : * contrib/btree_gist/btree_int8.c
3 : */
4 : #include "postgres.h"
5 :
6 : #include "btree_gist.h"
7 : #include "btree_utils_num.h"
8 : #include "common/int.h"
9 : #include "utils/rel.h"
10 : #include "utils/sortsupport.h"
11 :
12 : typedef struct int64key
13 : {
14 : int64 lower;
15 : int64 upper;
16 : } int64KEY;
17 :
18 : /* GiST support functions */
19 4 : PG_FUNCTION_INFO_V1(gbt_int8_compress);
20 4 : PG_FUNCTION_INFO_V1(gbt_int8_fetch);
21 4 : PG_FUNCTION_INFO_V1(gbt_int8_union);
22 4 : PG_FUNCTION_INFO_V1(gbt_int8_picksplit);
23 4 : PG_FUNCTION_INFO_V1(gbt_int8_consistent);
24 4 : PG_FUNCTION_INFO_V1(gbt_int8_distance);
25 4 : PG_FUNCTION_INFO_V1(gbt_int8_penalty);
26 4 : PG_FUNCTION_INFO_V1(gbt_int8_same);
27 4 : PG_FUNCTION_INFO_V1(gbt_int8_sortsupport);
28 :
29 :
30 : static bool
31 1638 : gbt_int8gt(const void *a, const void *b, FmgrInfo *flinfo)
32 : {
33 1638 : return (*((const int64 *) a) > *((const int64 *) b));
34 : }
35 : static bool
36 556 : gbt_int8ge(const void *a, const void *b, FmgrInfo *flinfo)
37 : {
38 556 : return (*((const int64 *) a) >= *((const int64 *) b));
39 : }
40 : static bool
41 274 : gbt_int8eq(const void *a, const void *b, FmgrInfo *flinfo)
42 : {
43 274 : return (*((const int64 *) a) == *((const int64 *) b));
44 : }
45 : static bool
46 558 : gbt_int8le(const void *a, const void *b, FmgrInfo *flinfo)
47 : {
48 558 : return (*((const int64 *) a) <= *((const int64 *) b));
49 : }
50 : static bool
51 1365 : gbt_int8lt(const void *a, const void *b, FmgrInfo *flinfo)
52 : {
53 1365 : return (*((const int64 *) a) < *((const int64 *) b));
54 : }
55 :
56 : static int
57 546 : gbt_int8key_cmp(const void *a, const void *b, FmgrInfo *flinfo)
58 : {
59 546 : int64KEY *ia = (int64KEY *) (((const Nsrt *) a)->t);
60 546 : int64KEY *ib = (int64KEY *) (((const Nsrt *) b)->t);
61 :
62 546 : if (ia->lower == ib->lower)
63 : {
64 0 : if (ia->upper == ib->upper)
65 0 : return 0;
66 :
67 0 : return (ia->upper > ib->upper) ? 1 : -1;
68 : }
69 :
70 546 : return (ia->lower > ib->lower) ? 1 : -1;
71 : }
72 :
73 : static float8
74 275 : gbt_int8_dist(const void *a, const void *b, FmgrInfo *flinfo)
75 : {
76 275 : return GET_FLOAT_DISTANCE(int64, a, b);
77 : }
78 :
79 :
80 : static const gbtree_ninfo tinfo =
81 : {
82 : gbt_t_int8,
83 : sizeof(int64),
84 : 16, /* sizeof(gbtreekey16) */
85 : gbt_int8gt,
86 : gbt_int8ge,
87 : gbt_int8eq,
88 : gbt_int8le,
89 : gbt_int8lt,
90 : gbt_int8key_cmp,
91 : gbt_int8_dist
92 : };
93 :
94 :
95 4 : PG_FUNCTION_INFO_V1(int8_dist);
96 : Datum
97 550 : int8_dist(PG_FUNCTION_ARGS)
98 : {
99 550 : int64 a = PG_GETARG_INT64(0);
100 550 : int64 b = PG_GETARG_INT64(1);
101 : int64 r;
102 : int64 ra;
103 :
104 550 : if (pg_sub_s64_overflow(a, b, &r) ||
105 550 : r == PG_INT64_MIN)
106 0 : ereport(ERROR,
107 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
108 : errmsg("bigint out of range")));
109 :
110 550 : ra = i64abs(r);
111 :
112 550 : PG_RETURN_INT64(ra);
113 : }
114 :
115 :
116 : /**************************************************
117 : * GiST support functions
118 : **************************************************/
119 :
120 : Datum
121 549 : gbt_int8_compress(PG_FUNCTION_ARGS)
122 : {
123 549 : GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
124 :
125 549 : PG_RETURN_POINTER(gbt_num_compress(entry, &tinfo));
126 : }
127 :
128 : Datum
129 274 : gbt_int8_fetch(PG_FUNCTION_ARGS)
130 : {
131 274 : GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
132 :
133 274 : PG_RETURN_POINTER(gbt_num_fetch(entry, &tinfo));
134 : }
135 :
136 : Datum
137 1926 : gbt_int8_consistent(PG_FUNCTION_ARGS)
138 : {
139 1926 : GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
140 1926 : int64 query = PG_GETARG_INT64(1);
141 1926 : StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
142 : #ifdef NOT_USED
143 : Oid subtype = PG_GETARG_OID(3);
144 : #endif
145 1926 : bool *recheck = (bool *) PG_GETARG_POINTER(4);
146 1926 : int64KEY *kkk = (int64KEY *) DatumGetPointer(entry->key);
147 : GBT_NUMKEY_R key;
148 :
149 : /* All cases served by this function are exact */
150 1926 : *recheck = false;
151 :
152 1926 : key.lower = (GBT_NUMKEY *) &kkk->lower;
153 1926 : key.upper = (GBT_NUMKEY *) &kkk->upper;
154 :
155 1926 : PG_RETURN_BOOL(gbt_num_consistent(&key, &query, &strategy,
156 : GIST_LEAF(entry), &tinfo, fcinfo->flinfo));
157 : }
158 :
159 : Datum
160 276 : gbt_int8_distance(PG_FUNCTION_ARGS)
161 : {
162 276 : GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
163 276 : int64 query = PG_GETARG_INT64(1);
164 : #ifdef NOT_USED
165 : Oid subtype = PG_GETARG_OID(3);
166 : #endif
167 276 : int64KEY *kkk = (int64KEY *) DatumGetPointer(entry->key);
168 : GBT_NUMKEY_R key;
169 :
170 276 : key.lower = (GBT_NUMKEY *) &kkk->lower;
171 276 : key.upper = (GBT_NUMKEY *) &kkk->upper;
172 :
173 276 : PG_RETURN_FLOAT8(gbt_num_distance(&key, &query, GIST_LEAF(entry),
174 : &tinfo, fcinfo->flinfo));
175 : }
176 :
177 : Datum
178 1 : gbt_int8_union(PG_FUNCTION_ARGS)
179 : {
180 1 : GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
181 1 : void *out = palloc(sizeof(int64KEY));
182 :
183 1 : *(int *) PG_GETARG_POINTER(1) = sizeof(int64KEY);
184 1 : PG_RETURN_POINTER(gbt_num_union(out, entryvec, &tinfo, fcinfo->flinfo));
185 : }
186 :
187 : Datum
188 0 : gbt_int8_penalty(PG_FUNCTION_ARGS)
189 : {
190 0 : int64KEY *origentry = (int64KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
191 0 : int64KEY *newentry = (int64KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key);
192 0 : float *result = (float *) PG_GETARG_POINTER(2);
193 :
194 0 : penalty_num(result, origentry->lower, origentry->upper, newentry->lower, newentry->upper);
195 :
196 0 : PG_RETURN_POINTER(result);
197 : }
198 :
199 : Datum
200 1 : gbt_int8_picksplit(PG_FUNCTION_ARGS)
201 : {
202 1 : PG_RETURN_POINTER(gbt_num_picksplit((GistEntryVector *) PG_GETARG_POINTER(0),
203 : (GIST_SPLITVEC *) PG_GETARG_POINTER(1),
204 : &tinfo, fcinfo->flinfo));
205 : }
206 :
207 : Datum
208 0 : gbt_int8_same(PG_FUNCTION_ARGS)
209 : {
210 0 : int64KEY *b1 = (int64KEY *) PG_GETARG_POINTER(0);
211 0 : int64KEY *b2 = (int64KEY *) PG_GETARG_POINTER(1);
212 0 : bool *result = (bool *) PG_GETARG_POINTER(2);
213 :
214 0 : *result = gbt_num_same((void *) b1, (void *) b2, &tinfo, fcinfo->flinfo);
215 0 : PG_RETURN_POINTER(result);
216 : }
217 :
218 : static int
219 5109 : gbt_int8_ssup_cmp(Datum x, Datum y, SortSupport ssup)
220 : {
221 5109 : int64KEY *arg1 = (int64KEY *) DatumGetPointer(x);
222 5109 : int64KEY *arg2 = (int64KEY *) DatumGetPointer(y);
223 :
224 : /* for leaf items we expect lower == upper, so only compare lower */
225 5109 : if (arg1->lower < arg2->lower)
226 2567 : return -1;
227 2542 : else if (arg1->lower > arg2->lower)
228 2542 : return 1;
229 : else
230 0 : return 0;
231 :
232 : }
233 :
234 : Datum
235 1 : gbt_int8_sortsupport(PG_FUNCTION_ARGS)
236 : {
237 1 : SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0);
238 :
239 1 : ssup->comparator = gbt_int8_ssup_cmp;
240 1 : PG_RETURN_VOID();
241 : }
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