postgresql/contrib/btree_gist/btree_inet.c
2004-08-29 05:07:03 +00:00

234 lines
5.2 KiB
C

#include "btree_gist.h"
#include "btree_utils_num.h"
#include "utils/builtins.h"
#include "utils/inet.h"
#include "catalog/pg_type.h"
typedef struct inetkey
{
double lower;
double upper;
} inetKEY;
/*
** inet ops
*/
PG_FUNCTION_INFO_V1(gbt_inet_compress);
PG_FUNCTION_INFO_V1(gbt_cidr_compress);
PG_FUNCTION_INFO_V1(gbt_inet_union);
PG_FUNCTION_INFO_V1(gbt_inet_picksplit);
PG_FUNCTION_INFO_V1(gbt_inet_consistent);
PG_FUNCTION_INFO_V1(gbt_cidr_consistent);
PG_FUNCTION_INFO_V1(gbt_inet_penalty);
PG_FUNCTION_INFO_V1(gbt_inet_same);
Datum gbt_inet_compress(PG_FUNCTION_ARGS);
Datum gbt_cidr_compress(PG_FUNCTION_ARGS);
Datum gbt_inet_union(PG_FUNCTION_ARGS);
Datum gbt_inet_picksplit(PG_FUNCTION_ARGS);
Datum gbt_inet_consistent(PG_FUNCTION_ARGS);
Datum gbt_cidr_consistent(PG_FUNCTION_ARGS);
Datum gbt_inet_penalty(PG_FUNCTION_ARGS);
Datum gbt_inet_same(PG_FUNCTION_ARGS);
static bool
gbt_inetgt(const void *a, const void *b)
{
return (*((double *) a) > *((double *) b));
}
static bool
gbt_inetge(const void *a, const void *b)
{
return (*((double *) a) >= *((double *) b));
}
static bool
gbt_ineteq(const void *a, const void *b)
{
return (*((double *) a) == *((double *) b));
}
static bool
gbt_inetle(const void *a, const void *b)
{
return (*((double *) a) <= *((double *) b));
}
static bool
gbt_inetlt(const void *a, const void *b)
{
return (*((double *) a) < *((double *) b));
}
static int
gbt_inetkey_cmp(const void *a, const void *b)
{
if (*(double *) (&((Nsrt *) a)->t[0]) > *(double *) (&((Nsrt *) b)->t[0]))
return 1;
else if (*(double *) (&((Nsrt *) a)->t[0]) < *(double *) (&((Nsrt *) b)->t[0]))
return -1;
return 0;
}
static const gbtree_ninfo tinfo =
{
gbt_t_inet,
sizeof(double),
gbt_inetgt,
gbt_inetge,
gbt_ineteq,
gbt_inetle,
gbt_inetlt,
gbt_inetkey_cmp
};
/**************************************************
* inet ops
**************************************************/
static GISTENTRY *
gbt_inet_compress_inetrnal(GISTENTRY *retval, GISTENTRY *entry, Oid typid)
{
if (entry->leafkey)
{
inetKEY *r = (inetKEY *) palloc(sizeof(inetKEY));
retval = palloc(sizeof(GISTENTRY));
r->lower = convert_network_to_scalar(entry->key, typid);
r->upper = r->lower;
gistentryinit(*retval, PointerGetDatum(r),
entry->rel, entry->page,
entry->offset, sizeof(inetKEY), FALSE);
}
else
retval = entry;
return (retval);
}
Datum
gbt_inet_compress(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
GISTENTRY *retval = NULL;
PG_RETURN_POINTER(gbt_inet_compress_inetrnal(retval, entry, INETOID));
}
Datum
gbt_cidr_compress(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
GISTENTRY *retval = NULL;
PG_RETURN_POINTER(gbt_inet_compress_inetrnal(retval, entry, CIDROID));
}
static bool
gbt_inet_consistent_internal(
const GISTENTRY *entry,
const double *query,
const StrategyNumber *strategy
)
{
inetKEY *kkk = (inetKEY *) DatumGetPointer(entry->key);
GBT_NUMKEY_R key;
key.lower = (GBT_NUMKEY *) & kkk->lower;
key.upper = (GBT_NUMKEY *) & kkk->upper;
return (
gbt_num_consistent(&key, (void *) query, strategy, GIST_LEAF(entry), &tinfo)
);
}
Datum
gbt_inet_consistent(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
double query = convert_network_to_scalar(PG_GETARG_DATUM(1), INETOID);
StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
PG_RETURN_BOOL(
gbt_inet_consistent_internal(entry, &query, &strategy)
);
}
Datum
gbt_cidr_consistent(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
double query = convert_network_to_scalar(PG_GETARG_DATUM(1), CIDROID);
StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
PG_RETURN_BOOL(
gbt_inet_consistent_internal(entry, &query, &strategy)
);
}
Datum
gbt_inet_union(PG_FUNCTION_ARGS)
{
GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
void *out = palloc(sizeof(inetKEY));
*(int *) PG_GETARG_POINTER(1) = sizeof(inetKEY);
PG_RETURN_POINTER(gbt_num_union((void *) out, entryvec, &tinfo));
}
Datum
gbt_inet_penalty(PG_FUNCTION_ARGS)
{
inetKEY *origentry = (inetKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
inetKEY *newentry = (inetKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key);
float *result = (float *) PG_GETARG_POINTER(2);
double res;
*result = 0.0;
penalty_range_enlarge(origentry->lower, origentry->upper, newentry->lower, newentry->upper);
if (res > 0)
{
*result += FLT_MIN;
*result += (float) (res / ((double) (res + origentry->upper - origentry->lower)));
*result *= (FLT_MAX / (((GISTENTRY *) PG_GETARG_POINTER(0))->rel->rd_att->natts + 1));
}
PG_RETURN_POINTER(result);
}
Datum
gbt_inet_picksplit(PG_FUNCTION_ARGS)
{
PG_RETURN_POINTER(gbt_num_picksplit(
(GistEntryVector *) PG_GETARG_POINTER(0),
(GIST_SPLITVEC *) PG_GETARG_POINTER(1),
&tinfo
));
}
Datum
gbt_inet_same(PG_FUNCTION_ARGS)
{
inetKEY *b1 = (inetKEY *) PG_GETARG_POINTER(0);
inetKEY *b2 = (inetKEY *) PG_GETARG_POINTER(1);
bool *result = (bool *) PG_GETARG_POINTER(2);
*result = gbt_num_same((void *) b1, (void *) b2, &tinfo);
PG_RETURN_POINTER(result);
}