mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-12-09 08:10:09 +08:00
9b5c8d45f6
"consistent" functions, and remove pg_amop.opreqcheck, as per recent discussion. The main immediate benefit of this is that we no longer need 8.3's ugly hack of requiring @@@ rather than @@ to test weight-using tsquery searches on GIN indexes. In future it should be possible to optimize some other queries better than is done now, by detecting at runtime whether the index match is exact or not. Tom Lane, after an idea of Heikki's, and with some help from Teodor.
161 lines
3.7 KiB
C
161 lines
3.7 KiB
C
#include "btree_gist.h"
|
|
#include "btree_utils_num.h"
|
|
|
|
typedef struct float4key
|
|
{
|
|
float4 lower;
|
|
float4 upper;
|
|
} float4KEY;
|
|
|
|
/*
|
|
** float4 ops
|
|
*/
|
|
PG_FUNCTION_INFO_V1(gbt_float4_compress);
|
|
PG_FUNCTION_INFO_V1(gbt_float4_union);
|
|
PG_FUNCTION_INFO_V1(gbt_float4_picksplit);
|
|
PG_FUNCTION_INFO_V1(gbt_float4_consistent);
|
|
PG_FUNCTION_INFO_V1(gbt_float4_penalty);
|
|
PG_FUNCTION_INFO_V1(gbt_float4_same);
|
|
|
|
Datum gbt_float4_compress(PG_FUNCTION_ARGS);
|
|
Datum gbt_float4_union(PG_FUNCTION_ARGS);
|
|
Datum gbt_float4_picksplit(PG_FUNCTION_ARGS);
|
|
Datum gbt_float4_consistent(PG_FUNCTION_ARGS);
|
|
Datum gbt_float4_penalty(PG_FUNCTION_ARGS);
|
|
Datum gbt_float4_same(PG_FUNCTION_ARGS);
|
|
|
|
static bool
|
|
gbt_float4gt(const void *a, const void *b)
|
|
{
|
|
return (*((float4 *) a) > *((float4 *) b));
|
|
}
|
|
static bool
|
|
gbt_float4ge(const void *a, const void *b)
|
|
{
|
|
return (*((float4 *) a) >= *((float4 *) b));
|
|
}
|
|
static bool
|
|
gbt_float4eq(const void *a, const void *b)
|
|
{
|
|
return (*((float4 *) a) == *((float4 *) b));
|
|
}
|
|
static bool
|
|
gbt_float4le(const void *a, const void *b)
|
|
{
|
|
return (*((float4 *) a) <= *((float4 *) b));
|
|
}
|
|
static bool
|
|
gbt_float4lt(const void *a, const void *b)
|
|
{
|
|
return (*((float4 *) a) < *((float4 *) b));
|
|
}
|
|
|
|
static int
|
|
gbt_float4key_cmp(const void *a, const void *b)
|
|
{
|
|
|
|
if (*(float4 *) &(((Nsrt *) a)->t[0]) > *(float4 *) &(((Nsrt *) b)->t[0]))
|
|
return 1;
|
|
else if (*(float4 *) &(((Nsrt *) a)->t[0]) < *(float4 *) &(((Nsrt *) b)->t[0]))
|
|
return -1;
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
static const gbtree_ninfo tinfo =
|
|
{
|
|
gbt_t_float4,
|
|
sizeof(float4),
|
|
gbt_float4gt,
|
|
gbt_float4ge,
|
|
gbt_float4eq,
|
|
gbt_float4le,
|
|
gbt_float4lt,
|
|
gbt_float4key_cmp
|
|
};
|
|
|
|
|
|
/**************************************************
|
|
* float4 ops
|
|
**************************************************/
|
|
|
|
|
|
Datum
|
|
gbt_float4_compress(PG_FUNCTION_ARGS)
|
|
{
|
|
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
|
|
GISTENTRY *retval = NULL;
|
|
|
|
PG_RETURN_POINTER(gbt_num_compress(retval, entry, &tinfo));
|
|
}
|
|
|
|
|
|
Datum
|
|
gbt_float4_consistent(PG_FUNCTION_ARGS)
|
|
{
|
|
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
|
|
float4 query = PG_GETARG_FLOAT4(1);
|
|
StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
|
|
/* Oid subtype = PG_GETARG_OID(3); */
|
|
bool *recheck = (bool *) PG_GETARG_POINTER(4);
|
|
float4KEY *kkk = (float4KEY *) DatumGetPointer(entry->key);
|
|
GBT_NUMKEY_R key;
|
|
|
|
/* All cases served by this function are exact */
|
|
*recheck = false;
|
|
|
|
key.lower = (GBT_NUMKEY *) & kkk->lower;
|
|
key.upper = (GBT_NUMKEY *) & kkk->upper;
|
|
|
|
PG_RETURN_BOOL(
|
|
gbt_num_consistent(&key, (void *) &query, &strategy, GIST_LEAF(entry), &tinfo)
|
|
);
|
|
}
|
|
|
|
|
|
Datum
|
|
gbt_float4_union(PG_FUNCTION_ARGS)
|
|
{
|
|
GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
|
|
void *out = palloc(sizeof(float4KEY));
|
|
|
|
*(int *) PG_GETARG_POINTER(1) = sizeof(float4KEY);
|
|
PG_RETURN_POINTER(gbt_num_union((void *) out, entryvec, &tinfo));
|
|
}
|
|
|
|
|
|
Datum
|
|
gbt_float4_penalty(PG_FUNCTION_ARGS)
|
|
{
|
|
float4KEY *origentry = (float4KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
|
|
float4KEY *newentry = (float4KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key);
|
|
float *result = (float *) PG_GETARG_POINTER(2);
|
|
|
|
penalty_num(result, origentry->lower, origentry->upper, newentry->lower, newentry->upper);
|
|
|
|
PG_RETURN_POINTER(result);
|
|
|
|
}
|
|
|
|
Datum
|
|
gbt_float4_picksplit(PG_FUNCTION_ARGS)
|
|
{
|
|
PG_RETURN_POINTER(gbt_num_picksplit(
|
|
(GistEntryVector *) PG_GETARG_POINTER(0),
|
|
(GIST_SPLITVEC *) PG_GETARG_POINTER(1),
|
|
&tinfo
|
|
));
|
|
}
|
|
|
|
Datum
|
|
gbt_float4_same(PG_FUNCTION_ARGS)
|
|
{
|
|
float4KEY *b1 = (float4KEY *) PG_GETARG_POINTER(0);
|
|
float4KEY *b2 = (float4KEY *) PG_GETARG_POINTER(1);
|
|
bool *result = (bool *) PG_GETARG_POINTER(2);
|
|
|
|
*result = gbt_num_same((void *) b1, (void *) b2, &tinfo);
|
|
PG_RETURN_POINTER(result);
|
|
}
|