postgresql/contrib/btree_gist/btree_int4.c
2005-10-15 02:49:52 +00:00

157 lines
3.5 KiB
C

#include "btree_gist.h"
#include "btree_utils_num.h"
typedef struct int32key
{
int32 lower;
int32 upper;
} int32KEY;
/*
** int32 ops
*/
PG_FUNCTION_INFO_V1(gbt_int4_compress);
PG_FUNCTION_INFO_V1(gbt_int4_union);
PG_FUNCTION_INFO_V1(gbt_int4_picksplit);
PG_FUNCTION_INFO_V1(gbt_int4_consistent);
PG_FUNCTION_INFO_V1(gbt_int4_penalty);
PG_FUNCTION_INFO_V1(gbt_int4_same);
Datum gbt_int4_compress(PG_FUNCTION_ARGS);
Datum gbt_int4_union(PG_FUNCTION_ARGS);
Datum gbt_int4_picksplit(PG_FUNCTION_ARGS);
Datum gbt_int4_consistent(PG_FUNCTION_ARGS);
Datum gbt_int4_penalty(PG_FUNCTION_ARGS);
Datum gbt_int4_same(PG_FUNCTION_ARGS);
static bool
gbt_int4gt(const void *a, const void *b)
{
return (*((int32 *) a) > *((int32 *) b));
}
static bool
gbt_int4ge(const void *a, const void *b)
{
return (*((int32 *) a) >= *((int32 *) b));
}
static bool
gbt_int4eq(const void *a, const void *b)
{
return (*((int32 *) a) == *((int32 *) b));
}
static bool
gbt_int4le(const void *a, const void *b)
{
return (*((int32 *) a) <= *((int32 *) b));
}
static bool
gbt_int4lt(const void *a, const void *b)
{
return (*((int32 *) a) < *((int32 *) b));
}
static int
gbt_int4key_cmp(const void *a, const void *b)
{
if (*(int32 *) &(((Nsrt *) a)->t[0]) > *(int32 *) &(((Nsrt *) b)->t[0]))
return 1;
else if (*(int32 *) &(((Nsrt *) a)->t[0]) < *(int32 *) &(((Nsrt *) b)->t[0]))
return -1;
return 0;
}
static const gbtree_ninfo tinfo =
{
gbt_t_int4,
sizeof(int32),
gbt_int4gt,
gbt_int4ge,
gbt_int4eq,
gbt_int4le,
gbt_int4lt,
gbt_int4key_cmp
};
/**************************************************
* int32 ops
**************************************************/
Datum
gbt_int4_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_int4_consistent(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
int32 query = PG_GETARG_INT32(1);
int32KEY *kkk = (int32KEY *) DatumGetPointer(entry->key);
GBT_NUMKEY_R key;
StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
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_int4_union(PG_FUNCTION_ARGS)
{
GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
void *out = palloc(sizeof(int32KEY));
*(int *) PG_GETARG_POINTER(1) = sizeof(int32KEY);
PG_RETURN_POINTER(gbt_num_union((void *) out, entryvec, &tinfo));
}
Datum
gbt_int4_penalty(PG_FUNCTION_ARGS)
{
int32KEY *origentry = (int32KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
int32KEY *newentry = (int32KEY *) 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_int4_picksplit(PG_FUNCTION_ARGS)
{
PG_RETURN_POINTER(gbt_num_picksplit(
(GistEntryVector *) PG_GETARG_POINTER(0),
(GIST_SPLITVEC *) PG_GETARG_POINTER(1),
&tinfo
));
}
Datum
gbt_int4_same(PG_FUNCTION_ARGS)
{
int32KEY *b1 = (int32KEY *) PG_GETARG_POINTER(0);
int32KEY *b2 = (int32KEY *) PG_GETARG_POINTER(1);
bool *result = (bool *) PG_GETARG_POINTER(2);
*result = gbt_num_same((void *) b1, (void *) b2, &tinfo);
PG_RETURN_POINTER(result);
}