PostgreSQL Source Code  git master
btree_int2.c
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1 /*
2  * contrib/btree_gist/btree_int2.c
3  */
4 #include "postgres.h"
5 
6 #include "btree_gist.h"
7 #include "btree_utils_num.h"
8 #include "common/int.h"
9 
10 typedef struct int16key
11 {
14 } int16KEY;
15 
16 /*
17 ** int16 ops
18 */
27 
28 static bool
29 gbt_int2gt(const void *a, const void *b, FmgrInfo *flinfo)
30 {
31  return (*((const int16 *) a) > *((const int16 *) b));
32 }
33 static bool
34 gbt_int2ge(const void *a, const void *b, FmgrInfo *flinfo)
35 {
36  return (*((const int16 *) a) >= *((const int16 *) b));
37 }
38 static bool
39 gbt_int2eq(const void *a, const void *b, FmgrInfo *flinfo)
40 {
41  return (*((const int16 *) a) == *((const int16 *) b));
42 }
43 static bool
44 gbt_int2le(const void *a, const void *b, FmgrInfo *flinfo)
45 {
46  return (*((const int16 *) a) <= *((const int16 *) b));
47 }
48 static bool
49 gbt_int2lt(const void *a, const void *b, FmgrInfo *flinfo)
50 {
51  return (*((const int16 *) a) < *((const int16 *) b));
52 }
53 
54 static int
55 gbt_int2key_cmp(const void *a, const void *b, FmgrInfo *flinfo)
56 {
57  int16KEY *ia = (int16KEY *) (((const Nsrt *) a)->t);
58  int16KEY *ib = (int16KEY *) (((const Nsrt *) b)->t);
59 
60  if (ia->lower == ib->lower)
61  {
62  if (ia->upper == ib->upper)
63  return 0;
64 
65  return (ia->upper > ib->upper) ? 1 : -1;
66  }
67 
68  return (ia->lower > ib->lower) ? 1 : -1;
69 }
70 
71 static float8
72 gbt_int2_dist(const void *a, const void *b, FmgrInfo *flinfo)
73 {
74  return GET_FLOAT_DISTANCE(int16, a, b);
75 }
76 
77 
78 static const gbtree_ninfo tinfo =
79 {
80  gbt_t_int2,
81  sizeof(int16),
82  4, /* sizeof(gbtreekey4) */
83  gbt_int2gt,
84  gbt_int2ge,
85  gbt_int2eq,
86  gbt_int2le,
87  gbt_int2lt,
90 };
91 
92 
94 Datum
96 {
97  int16 a = PG_GETARG_INT16(0);
98  int16 b = PG_GETARG_INT16(1);
99  int16 r;
100  int16 ra;
101 
102  if (pg_sub_s16_overflow(a, b, &r) ||
103  r == PG_INT16_MIN)
104  ereport(ERROR,
105  (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
106  errmsg("smallint out of range")));
107 
108  ra = Abs(r);
109 
110  PG_RETURN_INT16(ra);
111 }
112 
113 
114 /**************************************************
115  * int16 ops
116  **************************************************/
117 
118 
119 Datum
121 {
122  GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
123 
124  PG_RETURN_POINTER(gbt_num_compress(entry, &tinfo));
125 }
126 
127 Datum
129 {
130  GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
131 
132  PG_RETURN_POINTER(gbt_num_fetch(entry, &tinfo));
133 }
134 
135 Datum
137 {
138  GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
139  int16 query = PG_GETARG_INT16(1);
141 
142  /* Oid subtype = PG_GETARG_OID(3); */
143  bool *recheck = (bool *) PG_GETARG_POINTER(4);
144  int16KEY *kkk = (int16KEY *) DatumGetPointer(entry->key);
146 
147  /* All cases served by this function are exact */
148  *recheck = false;
149 
150  key.lower = (GBT_NUMKEY *) &kkk->lower;
151  key.upper = (GBT_NUMKEY *) &kkk->upper;
152 
153  PG_RETURN_BOOL(gbt_num_consistent(&key, (void *) &query, &strategy,
154  GIST_LEAF(entry), &tinfo, fcinfo->flinfo));
155 }
156 
157 
158 Datum
160 {
161  GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
162  int16 query = PG_GETARG_INT16(1);
163 
164  /* Oid subtype = PG_GETARG_OID(3); */
165  int16KEY *kkk = (int16KEY *) DatumGetPointer(entry->key);
167 
168  key.lower = (GBT_NUMKEY *) &kkk->lower;
169  key.upper = (GBT_NUMKEY *) &kkk->upper;
170 
171  PG_RETURN_FLOAT8(gbt_num_distance(&key, (void *) &query, GIST_LEAF(entry),
172  &tinfo, fcinfo->flinfo));
173 }
174 
175 
176 Datum
178 {
180  void *out = palloc(sizeof(int16KEY));
181 
182  *(int *) PG_GETARG_POINTER(1) = sizeof(int16KEY);
183  PG_RETURN_POINTER(gbt_num_union((void *) out, entryvec, &tinfo, fcinfo->flinfo));
184 }
185 
186 
187 Datum
189 {
190  int16KEY *origentry = (int16KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
191  int16KEY *newentry = (int16KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key);
192  float *result = (float *) PG_GETARG_POINTER(2);
193 
194  penalty_num(result, origentry->lower, origentry->upper, newentry->lower, newentry->upper);
195 
196  PG_RETURN_POINTER(result);
197 }
198 
199 Datum
201 {
204  &tinfo, fcinfo->flinfo));
205 }
206 
207 Datum
209 {
210  int16KEY *b1 = (int16KEY *) PG_GETARG_POINTER(0);
211  int16KEY *b2 = (int16KEY *) PG_GETARG_POINTER(1);
212  bool *result = (bool *) PG_GETARG_POINTER(2);
213 
214  *result = gbt_num_same((void *) b1, (void *) b2, &tinfo, fcinfo->flinfo);
215  PG_RETURN_POINTER(result);
216 }
#define GIST_LEAF(entry)
Definition: gist.h:162
signed short int16
Definition: c.h:361
#define PG_RETURN_POINTER(x)
Definition: fmgr.h:360
bool gbt_num_same(const GBT_NUMKEY *a, const GBT_NUMKEY *b, const gbtree_ninfo *tinfo, FmgrInfo *flinfo)
Definition: fmgr.h:56
const GBT_NUMKEY * lower
float8 gbt_num_distance(const GBT_NUMKEY_R *key, const void *query, bool is_leaf, const gbtree_ninfo *tinfo, FmgrInfo *flinfo)
static bool gbt_int2gt(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_int2.c:29
GISTENTRY * gbt_num_fetch(GISTENTRY *entry, const gbtree_ninfo *tinfo)
static bool gbt_int2lt(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_int2.c:49
#define PG_RETURN_FLOAT8(x)
Definition: fmgr.h:365
Datum gbt_int2_consistent(PG_FUNCTION_ARGS)
Definition: btree_int2.c:136
#define PG_RETURN_INT16(x)
Definition: fmgr.h:355
uint16 StrategyNumber
Definition: stratnum.h:22
int errcode(int sqlerrcode)
Definition: elog.c:610
const GBT_NUMKEY * upper
#define PG_GETARG_POINTER(n)
Definition: fmgr.h:276
bool gbt_num_consistent(const GBT_NUMKEY_R *key, const void *query, const StrategyNumber *strategy, bool is_leaf, const gbtree_ninfo *tinfo, FmgrInfo *flinfo)
static bool gbt_int2le(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_int2.c:44
static float8 gbt_int2_dist(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_int2.c:72
Datum int2_dist(PG_FUNCTION_ARGS)
Definition: btree_int2.c:95
Datum gbt_int2_fetch(PG_FUNCTION_ARGS)
Definition: btree_int2.c:128
Datum gbt_int2_compress(PG_FUNCTION_ARGS)
Definition: btree_int2.c:120
static bool gbt_int2eq(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_int2.c:39
#define Abs(x)
Definition: c.h:933
GISTENTRY * gbt_num_compress(GISTENTRY *entry, const gbtree_ninfo *tinfo)
Datum gbt_int2_same(PG_FUNCTION_ARGS)
Definition: btree_int2.c:208
#define ERROR
Definition: elog.h:43
double float8
Definition: c.h:498
#define penalty_num(result, olower, oupper, nlower, nupper)
static int gbt_int2key_cmp(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_int2.c:55
Datum key
Definition: gist.h:152
char GBT_NUMKEY
static const gbtree_ninfo tinfo
Definition: btree_int2.c:78
#define PG_INT16_MIN
Definition: c.h:453
Datum gbt_int2_distance(PG_FUNCTION_ARGS)
Definition: btree_int2.c:159
Datum gbt_int2_penalty(PG_FUNCTION_ARGS)
Definition: btree_int2.c:188
#define PG_RETURN_BOOL(x)
Definition: fmgr.h:358
uintptr_t Datum
Definition: postgres.h:367
int16 upper
Definition: btree_int2.c:13
#define PG_GETARG_INT16(n)
Definition: fmgr.h:271
#define ereport(elevel,...)
Definition: elog.h:144
#define GET_FLOAT_DISTANCE(t, arg1, arg2)
static bool pg_sub_s16_overflow(int16 a, int16 b, int16 *result)
Definition: int.h:65
Datum gbt_int2_union(PG_FUNCTION_ARGS)
Definition: btree_int2.c:177
GIST_SPLITVEC * gbt_num_picksplit(const GistEntryVector *entryvec, GIST_SPLITVEC *v, const gbtree_ninfo *tinfo, FmgrInfo *flinfo)
int16 lower
Definition: btree_int2.c:12
#define PG_GETARG_UINT16(n)
Definition: fmgr.h:272
struct int16key int16KEY
#define DatumGetPointer(X)
Definition: postgres.h:549
void * palloc(Size size)
Definition: mcxt.c:950
int errmsg(const char *fmt,...)
Definition: elog.c:824
#define PG_FUNCTION_ARGS
Definition: fmgr.h:193
Datum gbt_int2_picksplit(PG_FUNCTION_ARGS)
Definition: btree_int2.c:200
PG_FUNCTION_INFO_V1(gbt_int2_compress)
static bool gbt_int2ge(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_int2.c:34
void * gbt_num_union(GBT_NUMKEY *out, const GistEntryVector *entryvec, const gbtree_ninfo *tinfo, FmgrInfo *flinfo)