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/sortsupport.h"
      10             : 
      11             : typedef struct int64key
      12             : {
      13             :     int64       lower;
      14             :     int64       upper;
      15             : } int64KEY;
      16             : 
      17             : /* GiST support functions */
      18           4 : PG_FUNCTION_INFO_V1(gbt_int8_compress);
      19           4 : PG_FUNCTION_INFO_V1(gbt_int8_fetch);
      20           4 : PG_FUNCTION_INFO_V1(gbt_int8_union);
      21           4 : PG_FUNCTION_INFO_V1(gbt_int8_picksplit);
      22           4 : PG_FUNCTION_INFO_V1(gbt_int8_consistent);
      23           4 : PG_FUNCTION_INFO_V1(gbt_int8_distance);
      24           4 : PG_FUNCTION_INFO_V1(gbt_int8_penalty);
      25           4 : PG_FUNCTION_INFO_V1(gbt_int8_same);
      26           4 : PG_FUNCTION_INFO_V1(gbt_int8_sortsupport);
      27             : 
      28             : 
      29             : static bool
      30        3276 : gbt_int8gt(const void *a, const void *b, FmgrInfo *flinfo)
      31             : {
      32        3276 :     return (*((const int64 *) a) > *((const int64 *) b));
      33             : }
      34             : static bool
      35        1112 : gbt_int8ge(const void *a, const void *b, FmgrInfo *flinfo)
      36             : {
      37        1112 :     return (*((const int64 *) a) >= *((const int64 *) b));
      38             : }
      39             : static bool
      40         548 : gbt_int8eq(const void *a, const void *b, FmgrInfo *flinfo)
      41             : {
      42         548 :     return (*((const int64 *) a) == *((const int64 *) b));
      43             : }
      44             : static bool
      45        1116 : gbt_int8le(const void *a, const void *b, FmgrInfo *flinfo)
      46             : {
      47        1116 :     return (*((const int64 *) a) <= *((const int64 *) b));
      48             : }
      49             : static bool
      50        2730 : gbt_int8lt(const void *a, const void *b, FmgrInfo *flinfo)
      51             : {
      52        2730 :     return (*((const int64 *) a) < *((const int64 *) b));
      53             : }
      54             : 
      55             : static int
      56        1092 : gbt_int8key_cmp(const void *a, const void *b, FmgrInfo *flinfo)
      57             : {
      58        1092 :     int64KEY   *ia = (int64KEY *) (((const Nsrt *) a)->t);
      59        1092 :     int64KEY   *ib = (int64KEY *) (((const Nsrt *) b)->t);
      60             : 
      61        1092 :     if (ia->lower == ib->lower)
      62             :     {
      63           0 :         if (ia->upper == ib->upper)
      64           0 :             return 0;
      65             : 
      66           0 :         return (ia->upper > ib->upper) ? 1 : -1;
      67             :     }
      68             : 
      69        1092 :     return (ia->lower > ib->lower) ? 1 : -1;
      70             : }
      71             : 
      72             : static float8
      73         550 : gbt_int8_dist(const void *a, const void *b, FmgrInfo *flinfo)
      74             : {
      75         550 :     return GET_FLOAT_DISTANCE(int64, a, b);
      76             : }
      77             : 
      78             : 
      79             : static const gbtree_ninfo tinfo =
      80             : {
      81             :     gbt_t_int8,
      82             :     sizeof(int64),
      83             :     16,                         /* sizeof(gbtreekey16) */
      84             :     gbt_int8gt,
      85             :     gbt_int8ge,
      86             :     gbt_int8eq,
      87             :     gbt_int8le,
      88             :     gbt_int8lt,
      89             :     gbt_int8key_cmp,
      90             :     gbt_int8_dist
      91             : };
      92             : 
      93             : 
      94           4 : PG_FUNCTION_INFO_V1(int8_dist);
      95             : Datum
      96        1100 : int8_dist(PG_FUNCTION_ARGS)
      97             : {
      98        1100 :     int64       a = PG_GETARG_INT64(0);
      99        1100 :     int64       b = PG_GETARG_INT64(1);
     100             :     int64       r;
     101             :     int64       ra;
     102             : 
     103        1100 :     if (pg_sub_s64_overflow(a, b, &r) ||
     104        1100 :         r == PG_INT64_MIN)
     105           0 :         ereport(ERROR,
     106             :                 (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
     107             :                  errmsg("bigint out of range")));
     108             : 
     109        1100 :     ra = i64abs(r);
     110             : 
     111        1100 :     PG_RETURN_INT64(ra);
     112             : }
     113             : 
     114             : 
     115             : /**************************************************
     116             :  * GiST support functions
     117             :  **************************************************/
     118             : 
     119             : Datum
     120        1098 : gbt_int8_compress(PG_FUNCTION_ARGS)
     121             : {
     122        1098 :     GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
     123             : 
     124        1098 :     PG_RETURN_POINTER(gbt_num_compress(entry, &tinfo));
     125             : }
     126             : 
     127             : Datum
     128         548 : gbt_int8_fetch(PG_FUNCTION_ARGS)
     129             : {
     130         548 :     GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
     131             : 
     132         548 :     PG_RETURN_POINTER(gbt_num_fetch(entry, &tinfo));
     133             : }
     134             : 
     135             : Datum
     136        3852 : gbt_int8_consistent(PG_FUNCTION_ARGS)
     137             : {
     138        3852 :     GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
     139        3852 :     int64       query = PG_GETARG_INT64(1);
     140        3852 :     StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
     141             : 
     142             :     /* Oid      subtype = PG_GETARG_OID(3); */
     143        3852 :     bool       *recheck = (bool *) PG_GETARG_POINTER(4);
     144        3852 :     int64KEY   *kkk = (int64KEY *) DatumGetPointer(entry->key);
     145             :     GBT_NUMKEY_R key;
     146             : 
     147             :     /* All cases served by this function are exact */
     148        3852 :     *recheck = false;
     149             : 
     150        3852 :     key.lower = (GBT_NUMKEY *) &kkk->lower;
     151        3852 :     key.upper = (GBT_NUMKEY *) &kkk->upper;
     152             : 
     153        3852 :     PG_RETURN_BOOL(gbt_num_consistent(&key, &query, &strategy,
     154             :                                       GIST_LEAF(entry), &tinfo, fcinfo->flinfo));
     155             : }
     156             : 
     157             : Datum
     158         552 : gbt_int8_distance(PG_FUNCTION_ARGS)
     159             : {
     160         552 :     GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
     161         552 :     int64       query = PG_GETARG_INT64(1);
     162             : 
     163             :     /* Oid      subtype = PG_GETARG_OID(3); */
     164         552 :     int64KEY   *kkk = (int64KEY *) DatumGetPointer(entry->key);
     165             :     GBT_NUMKEY_R key;
     166             : 
     167         552 :     key.lower = (GBT_NUMKEY *) &kkk->lower;
     168         552 :     key.upper = (GBT_NUMKEY *) &kkk->upper;
     169             : 
     170         552 :     PG_RETURN_FLOAT8(gbt_num_distance(&key, &query, GIST_LEAF(entry),
     171             :                                       &tinfo, fcinfo->flinfo));
     172             : }
     173             : 
     174             : Datum
     175           2 : gbt_int8_union(PG_FUNCTION_ARGS)
     176             : {
     177           2 :     GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
     178           2 :     void       *out = palloc(sizeof(int64KEY));
     179             : 
     180           2 :     *(int *) PG_GETARG_POINTER(1) = sizeof(int64KEY);
     181           2 :     PG_RETURN_POINTER(gbt_num_union(out, entryvec, &tinfo, fcinfo->flinfo));
     182             : }
     183             : 
     184             : Datum
     185           0 : gbt_int8_penalty(PG_FUNCTION_ARGS)
     186             : {
     187           0 :     int64KEY   *origentry = (int64KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
     188           0 :     int64KEY   *newentry = (int64KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key);
     189           0 :     float      *result = (float *) PG_GETARG_POINTER(2);
     190             : 
     191           0 :     penalty_num(result, origentry->lower, origentry->upper, newentry->lower, newentry->upper);
     192             : 
     193           0 :     PG_RETURN_POINTER(result);
     194             : }
     195             : 
     196             : Datum
     197           2 : gbt_int8_picksplit(PG_FUNCTION_ARGS)
     198             : {
     199           2 :     PG_RETURN_POINTER(gbt_num_picksplit((GistEntryVector *) PG_GETARG_POINTER(0),
     200             :                                         (GIST_SPLITVEC *) PG_GETARG_POINTER(1),
     201             :                                         &tinfo, fcinfo->flinfo));
     202             : }
     203             : 
     204             : Datum
     205           0 : gbt_int8_same(PG_FUNCTION_ARGS)
     206             : {
     207           0 :     int64KEY   *b1 = (int64KEY *) PG_GETARG_POINTER(0);
     208           0 :     int64KEY   *b2 = (int64KEY *) PG_GETARG_POINTER(1);
     209           0 :     bool       *result = (bool *) PG_GETARG_POINTER(2);
     210             : 
     211           0 :     *result = gbt_num_same((void *) b1, (void *) b2, &tinfo, fcinfo->flinfo);
     212           0 :     PG_RETURN_POINTER(result);
     213             : }
     214             : 
     215             : static int
     216       10218 : gbt_int8_ssup_cmp(Datum x, Datum y, SortSupport ssup)
     217             : {
     218       10218 :     int64KEY   *arg1 = (int64KEY *) DatumGetPointer(x);
     219       10218 :     int64KEY   *arg2 = (int64KEY *) DatumGetPointer(y);
     220             : 
     221             :     /* for leaf items we expect lower == upper, so only compare lower */
     222       10218 :     if (arg1->lower < arg2->lower)
     223        5134 :         return -1;
     224        5084 :     else if (arg1->lower > arg2->lower)
     225        5084 :         return 1;
     226             :     else
     227           0 :         return 0;
     228             : 
     229             : }
     230             : 
     231             : Datum
     232           2 : gbt_int8_sortsupport(PG_FUNCTION_ARGS)
     233             : {
     234           2 :     SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0);
     235             : 
     236           2 :     ssup->comparator = gbt_int8_ssup_cmp;
     237           2 :     PG_RETURN_VOID();
     238             : }