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/*
* contrib/btree_gist/btree_inet.c
*/
#include "postgres.h"
#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_inet_union);
PG_FUNCTION_INFO_V1(gbt_inet_picksplit);
PG_FUNCTION_INFO_V1(gbt_inet_consistent);
PG_FUNCTION_INFO_V1(gbt_inet_penalty);
PG_FUNCTION_INFO_V1(gbt_inet_same);
static bool
gbt_inetgt(const void *a, const void *b, FmgrInfo *flinfo)
{
return (*((const double *) a) > *((const double *) b));
}
static bool
gbt_inetge(const void *a, const void *b, FmgrInfo *flinfo)
{
return (*((const double *) a) >= *((const double *) b));
}
static bool
gbt_ineteq(const void *a, const void *b, FmgrInfo *flinfo)
{
return (*((const double *) a) == *((const double *) b));
}
static bool
gbt_inetle(const void *a, const void *b, FmgrInfo *flinfo)
{
return (*((const double *) a) <= *((const double *) b));
}
static bool
gbt_inetlt(const void *a, const void *b, FmgrInfo *flinfo)
{
return (*((const double *) a) < *((const double *) b));
}
static int
gbt_inetkey_cmp(const void *a, const void *b, FmgrInfo *flinfo)
{
inetKEY *ia = (inetKEY *) (((const Nsrt *) a)->t);
inetKEY *ib = (inetKEY *) (((const Nsrt *) b)->t);
if (ia->lower == ib->lower)
{
if (ia->upper == ib->upper)
return 0;
return (ia->upper > ib->upper) ? 1 : -1;
}
return (ia->lower > ib->lower) ? 1 : -1;
}
static const gbtree_ninfo tinfo =
{
gbt_t_inet,
sizeof(double),
16, /* sizeof(gbtreekey16) */
gbt_inetgt,
gbt_inetge,
gbt_ineteq,
gbt_inetle,
gbt_inetlt,
gbt_inetkey_cmp,
NULL
};
/**************************************************
* inet ops
**************************************************/
Datum
gbt_inet_compress(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
GISTENTRY *retval;
if (entry->leafkey)
{
inetKEY *r = (inetKEY *) palloc(sizeof(inetKEY));
bool failure = false;
retval = palloc(sizeof(GISTENTRY));
r->lower = convert_network_to_scalar(entry->key, INETOID, &failure);
Assert(!failure);
r->upper = r->lower;
gistentryinit(*retval, PointerGetDatum(r),
entry->rel, entry->page,
entry->offset, false);
}
else
retval = entry;
PG_RETURN_POINTER(retval);
}
Datum
gbt_inet_consistent(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
Datum dquery = PG_GETARG_DATUM(1);
StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
/* Oid subtype = PG_GETARG_OID(3); */
bool *recheck = (bool *) PG_GETARG_POINTER(4);
inetKEY *kkk = (inetKEY *) DatumGetPointer(entry->key);
GBT_NUMKEY_R key;
double query;
bool failure = false;
query = convert_network_to_scalar(dquery, INETOID, &failure);
Assert(!failure);
/* All cases served by this function are inexact */
*recheck = true;
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, fcinfo->flinfo));
}
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, fcinfo->flinfo));
}
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);
penalty_num(result, origentry->lower, origentry->upper, newentry->lower, newentry->upper);
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, fcinfo->flinfo
));
}
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, fcinfo->flinfo);
PG_RETURN_POINTER(result);
}
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