granicus.if.org Git - postgresql/blob - contrib/btree_gist/btree_bytea.c

   1 /*
   2  * contrib/btree_gist/btree_bytea.c
   3  */
   4 #include "postgres.h"
   5
   6 #include "btree_gist.h"
   7 #include "btree_utils_var.h"
   8 #include "utils/builtins.h"
   9 #include "utils/bytea.h"
  10
  11
  12 /*
  13 ** Bytea ops
  14 */
  15 PG_FUNCTION_INFO_V1(gbt_bytea_compress);
  16 PG_FUNCTION_INFO_V1(gbt_bytea_union);
  17 PG_FUNCTION_INFO_V1(gbt_bytea_picksplit);
  18 PG_FUNCTION_INFO_V1(gbt_bytea_consistent);
  19 PG_FUNCTION_INFO_V1(gbt_bytea_penalty);
  20 PG_FUNCTION_INFO_V1(gbt_bytea_same);
  21
  22
  23 /* define for comparison */
  24
  25 static bool
  26 gbt_byteagt(const void *a, const void *b, Oid collation, FmgrInfo *flinfo)
  27 {
  28         return DatumGetBool(DirectFunctionCall2(byteagt,
  29                                                                                         PointerGetDatum(a),
  30                                                                                         PointerGetDatum(b)));
  31 }
  32
  33 static bool
  34 gbt_byteage(const void *a, const void *b, Oid collation, FmgrInfo *flinfo)
  35 {
  36         return DatumGetBool(DirectFunctionCall2(byteage,
  37                                                                                         PointerGetDatum(a),
  38                                                                                         PointerGetDatum(b)));
  39 }
  40
  41 static bool
  42 gbt_byteaeq(const void *a, const void *b, Oid collation, FmgrInfo *flinfo)
  43 {
  44         return DatumGetBool(DirectFunctionCall2(byteaeq,
  45                                                                                         PointerGetDatum(a),
  46                                                                                         PointerGetDatum(b)));
  47 }
  48
  49 static bool
  50 gbt_byteale(const void *a, const void *b, Oid collation, FmgrInfo *flinfo)
  51 {
  52         return DatumGetBool(DirectFunctionCall2(byteale,
  53                                                                                         PointerGetDatum(a),
  54                                                                                         PointerGetDatum(b)));
  55 }
  56
  57 static bool
  58 gbt_bytealt(const void *a, const void *b, Oid collation, FmgrInfo *flinfo)
  59 {
  60         return DatumGetBool(DirectFunctionCall2(bytealt,
  61                                                                                         PointerGetDatum(a),
  62                                                                                         PointerGetDatum(b)));
  63 }
  64
  65 static int32
  66 gbt_byteacmp(const void *a, const void *b, Oid collation, FmgrInfo *flinfo)
  67 {
  68         return DatumGetInt32(DirectFunctionCall2(byteacmp,
  69                                                                                          PointerGetDatum(a),
  70                                                                                          PointerGetDatum(b)));
  71 }
  72
  73
  74 static const gbtree_vinfo tinfo =
  75 {
  76         gbt_t_bytea,
  77         0,
  78         true,
  79         gbt_byteagt,
  80         gbt_byteage,
  81         gbt_byteaeq,
  82         gbt_byteale,
  83         gbt_bytealt,
  84         gbt_byteacmp,
  85         NULL
  86 };
  87
  88
  89 /**************************************************
  90  * Text ops
  91  **************************************************/
  92
  93
  94 Datum
  95 gbt_bytea_compress(PG_FUNCTION_ARGS)
  96 {
  97         GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
  98
  99         PG_RETURN_POINTER(gbt_var_compress(entry, &tinfo));
 100 }
 101
 102
 103
 104 Datum
 105 gbt_bytea_consistent(PG_FUNCTION_ARGS)
 106 {
 107         GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
 108         void       *query = (void *) DatumGetByteaP(PG_GETARG_DATUM(1));
 109         StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
 110
 111         /* Oid          subtype = PG_GETARG_OID(3); */
 112         bool       *recheck = (bool *) PG_GETARG_POINTER(4);
 113         bool            retval;
 114         GBT_VARKEY *key = (GBT_VARKEY *) DatumGetPointer(entry->key);
 115         GBT_VARKEY_R r = gbt_var_key_readable(key);
 116
 117         /* All cases served by this function are exact */
 118         *recheck = false;
 119
 120         retval = gbt_var_consistent(&r, query, strategy, PG_GET_COLLATION(),
 121                                                                 GIST_LEAF(entry), &tinfo, fcinfo->flinfo);
 122         PG_RETURN_BOOL(retval);
 123 }
 124
 125
 126
 127 Datum
 128 gbt_bytea_union(PG_FUNCTION_ARGS)
 129 {
 130         GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
 131         int32      *size = (int *) PG_GETARG_POINTER(1);
 132
 133         PG_RETURN_POINTER(gbt_var_union(entryvec, size, PG_GET_COLLATION(),
 134                                                                         &tinfo, fcinfo->flinfo));
 135 }
 136
 137
 138 Datum
 139 gbt_bytea_picksplit(PG_FUNCTION_ARGS)
 140 {
 141         GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
 142         GIST_SPLITVEC *v = (GIST_SPLITVEC *) PG_GETARG_POINTER(1);
 143
 144         gbt_var_picksplit(entryvec, v, PG_GET_COLLATION(),
 145                                           &tinfo, fcinfo->flinfo);
 146         PG_RETURN_POINTER(v);
 147 }
 148
 149 Datum
 150 gbt_bytea_same(PG_FUNCTION_ARGS)
 151 {
 152         Datum           d1 = PG_GETARG_DATUM(0);
 153         Datum           d2 = PG_GETARG_DATUM(1);
 154         bool       *result = (bool *) PG_GETARG_POINTER(2);
 155
 156         *result = gbt_var_same(d1, d2, PG_GET_COLLATION(), &tinfo, fcinfo->flinfo);
 157         PG_RETURN_POINTER(result);
 158 }
 159
 160
 161 Datum
 162 gbt_bytea_penalty(PG_FUNCTION_ARGS)
 163 {
 164         GISTENTRY  *o = (GISTENTRY *) PG_GETARG_POINTER(0);
 165         GISTENTRY  *n = (GISTENTRY *) PG_GETARG_POINTER(1);
 166         float      *result = (float *) PG_GETARG_POINTER(2);
 167
 168         PG_RETURN_POINTER(gbt_var_penalty(result, o, n, PG_GET_COLLATION(),
 169                                                                           &tinfo, fcinfo->flinfo));
 170 }