/*
* contrib / btree_gist / btree_time . c
*/
#include "postgres.h"
#include "btree_gist.h"
#include "btree_utils_num.h"
#include "utils/fmgrprotos.h"
#include "utils/date.h"
#include "utils/sortsupport.h"
#include "utils/timestamp.h"
typedef struct
{
TimeADT lower;
TimeADT upper;
} timeKEY;
/* GiST support functions */
PG_FUNCTION_INFO_V1(gbt_time_compress);
PG_FUNCTION_INFO_V1(gbt_timetz_compress);
PG_FUNCTION_INFO_V1(gbt_time_fetch);
PG_FUNCTION_INFO_V1(gbt_time_union);
PG_FUNCTION_INFO_V1(gbt_time_picksplit);
PG_FUNCTION_INFO_V1(gbt_time_consistent);
PG_FUNCTION_INFO_V1(gbt_time_distance);
PG_FUNCTION_INFO_V1(gbt_timetz_consistent);
PG_FUNCTION_INFO_V1(gbt_time_penalty);
PG_FUNCTION_INFO_V1(gbt_time_same);
PG_FUNCTION_INFO_V1(gbt_time_sortsupport);
PG_FUNCTION_INFO_V1(gbt_timetz_sortsupport);
#ifdef USE_FLOAT8_BYVAL
#define TimeADTGetDatumFast(X) TimeADTGetDatum(X)
#else
#define TimeADTGetDatumFast(X) PointerGetDatum(&(X))
#endif
static bool
gbt_timegt(const void *a, const void *b, FmgrInfo *flinfo)
{
const TimeADT *aa = (const TimeADT *) a;
const TimeADT *bb = (const TimeADT *) b;
return DatumGetBool(DirectFunctionCall2(time_gt,
TimeADTGetDatumFast(*aa),
TimeADTGetDatumFast(*bb)));
}
static bool
gbt_timege(const void *a, const void *b, FmgrInfo *flinfo)
{
const TimeADT *aa = (const TimeADT *) a;
const TimeADT *bb = (const TimeADT *) b;
return DatumGetBool(DirectFunctionCall2(time_ge,
TimeADTGetDatumFast(*aa),
TimeADTGetDatumFast(*bb)));
}
static bool
gbt_timeeq(const void *a, const void *b, FmgrInfo *flinfo)
{
const TimeADT *aa = (const TimeADT *) a;
const TimeADT *bb = (const TimeADT *) b;
return DatumGetBool(DirectFunctionCall2(time_eq,
TimeADTGetDatumFast(*aa),
TimeADTGetDatumFast(*bb)));
}
static bool
gbt_timele(const void *a, const void *b, FmgrInfo *flinfo)
{
const TimeADT *aa = (const TimeADT *) a;
const TimeADT *bb = (const TimeADT *) b;
return DatumGetBool(DirectFunctionCall2(time_le,
TimeADTGetDatumFast(*aa),
TimeADTGetDatumFast(*bb)));
}
static bool
gbt_timelt(const void *a, const void *b, FmgrInfo *flinfo)
{
const TimeADT *aa = (const TimeADT *) a;
const TimeADT *bb = (const TimeADT *) b;
return DatumGetBool(DirectFunctionCall2(time_lt,
TimeADTGetDatumFast(*aa),
TimeADTGetDatumFast(*bb)));
}
static int
gbt_timekey_cmp(const void *a, const void *b, FmgrInfo *flinfo)
{
timeKEY *ia = (timeKEY *) (((const Nsrt *) a)->t);
timeKEY *ib = (timeKEY *) (((const Nsrt *) b)->t);
int res;
res = DatumGetInt32(DirectFunctionCall2(time_cmp, TimeADTGetDatumFast(ia->lower), TimeADTGetDatumFast(ib->lower)));
if (res == 0 )
return DatumGetInt32(DirectFunctionCall2(time_cmp, TimeADTGetDatumFast(ia->upper), TimeADTGetDatumFast(ib->upper)));
return res;
}
static float8
gbt_time_dist(const void *a, const void *b, FmgrInfo *flinfo)
{
const TimeADT *aa = (const TimeADT *) a;
const TimeADT *bb = (const TimeADT *) b;
Interval *i;
i = DatumGetIntervalP(DirectFunctionCall2(time_mi_time,
TimeADTGetDatumFast(*aa),
TimeADTGetDatumFast(*bb)));
return fabs(INTERVAL_TO_SEC(i));
}
static const gbtree_ninfo tinfo =
{
gbt_t_time,
sizeof (TimeADT),
16 , /* sizeof(gbtreekey16) */
gbt_timegt,
gbt_timege,
gbt_timeeq,
gbt_timele,
gbt_timelt,
gbt_timekey_cmp,
gbt_time_dist
};
PG_FUNCTION_INFO_V1(time_dist);
Datum
time_dist(PG_FUNCTION_ARGS)
{
Datum diff = DirectFunctionCall2(time_mi_time,
PG_GETARG_DATUM(0 ),
PG_GETARG_DATUM(1 ));
PG_RETURN_INTERVAL_P(abs_interval(DatumGetIntervalP(diff)));
}
/**************************************************
* GiST support functions
**************************************************/
Datum
gbt_time_compress(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0 );
PG_RETURN_POINTER(gbt_num_compress(entry, &tinfo));
}
Datum
gbt_timetz_compress(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0 );
GISTENTRY *retval;
if (entry->leafkey)
{
timeKEY *r = (timeKEY *) palloc(sizeof (timeKEY));
TimeTzADT *tz = DatumGetTimeTzADTP(entry->key);
TimeADT tmp;
retval = palloc(sizeof (GISTENTRY));
/* We are using the time + zone only to compress */
tmp = tz->time + (tz->zone * INT64CONST(1000000 ));
r->lower = r->upper = tmp;
gistentryinit(*retval, PointerGetDatum(r),
entry->rel, entry->page,
entry->offset, false );
}
else
retval = entry;
PG_RETURN_POINTER(retval);
}
Datum
gbt_time_fetch(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0 );
PG_RETURN_POINTER(gbt_num_fetch(entry, &tinfo));
}
Datum
gbt_time_consistent(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0 );
TimeADT query = PG_GETARG_TIMEADT(1 );
StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2 );
/* Oid subtype = PG_GETARG_OID(3); */
bool *recheck = (bool *) PG_GETARG_POINTER(4 );
timeKEY *kkk = (timeKEY *) 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, &query, &strategy,
GIST_LEAF(entry), &tinfo, fcinfo->flinfo));
}
Datum
gbt_time_distance(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0 );
TimeADT query = PG_GETARG_TIMEADT(1 );
/* Oid subtype = PG_GETARG_OID(3); */
timeKEY *kkk = (timeKEY *) DatumGetPointer(entry->key);
GBT_NUMKEY_R key;
key.lower = (GBT_NUMKEY *) &kkk->lower;
key.upper = (GBT_NUMKEY *) &kkk->upper;
PG_RETURN_FLOAT8(gbt_num_distance(&key, &query, GIST_LEAF(entry),
&tinfo, fcinfo->flinfo));
}
Datum
gbt_timetz_consistent(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0 );
TimeTzADT *query = PG_GETARG_TIMETZADT_P(1 );
StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2 );
/* Oid subtype = PG_GETARG_OID(3); */
bool *recheck = (bool *) PG_GETARG_POINTER(4 );
timeKEY *kkk = (timeKEY *) DatumGetPointer(entry->key);
TimeADT qqq;
GBT_NUMKEY_R key;
/* All cases served by this function are inexact */
*recheck = true ;
qqq = query->time + (query->zone * INT64CONST(1000000 ));
key.lower = (GBT_NUMKEY *) &kkk->lower;
key.upper = (GBT_NUMKEY *) &kkk->upper;
PG_RETURN_BOOL(gbt_num_consistent(&key, &qqq, &strategy,
GIST_LEAF(entry), &tinfo, fcinfo->flinfo));
}
Datum
gbt_time_union(PG_FUNCTION_ARGS)
{
GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0 );
void *out = palloc(sizeof (timeKEY));
*(int *) PG_GETARG_POINTER(1 ) = sizeof (timeKEY);
PG_RETURN_POINTER(gbt_num_union(out, entryvec, &tinfo, fcinfo->flinfo));
}
Datum
gbt_time_penalty(PG_FUNCTION_ARGS)
{
timeKEY *origentry = (timeKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0 ))->key);
timeKEY *newentry = (timeKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1 ))->key);
float *result = (float *) PG_GETARG_POINTER(2 );
Interval *intr;
double res;
double res2;
intr = DatumGetIntervalP(DirectFunctionCall2(time_mi_time,
TimeADTGetDatumFast(newentry->upper),
TimeADTGetDatumFast(origentry->upper)));
res = INTERVAL_TO_SEC(intr);
res = Max(res, 0 );
intr = DatumGetIntervalP(DirectFunctionCall2(time_mi_time,
TimeADTGetDatumFast(origentry->lower),
TimeADTGetDatumFast(newentry->lower)));
res2 = INTERVAL_TO_SEC(intr);
res2 = Max(res2, 0 );
res += res2;
*result = 0 .0 ;
if (res > 0 )
{
intr = DatumGetIntervalP(DirectFunctionCall2(time_mi_time,
TimeADTGetDatumFast(origentry->upper),
TimeADTGetDatumFast(origentry->lower)));
*result += FLT_MIN;
*result += (float ) (res / (res + INTERVAL_TO_SEC(intr)));
*result *= (FLT_MAX / (((GISTENTRY *) PG_GETARG_POINTER(0 ))->rel->rd_att->natts + 1 ));
}
PG_RETURN_POINTER(result);
}
Datum
gbt_time_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_time_same(PG_FUNCTION_ARGS)
{
timeKEY *b1 = (timeKEY *) PG_GETARG_POINTER(0 );
timeKEY *b2 = (timeKEY *) 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);
}
static int
gbt_timekey_ssup_cmp(Datum x, Datum y, SortSupport ssup)
{
timeKEY *arg1 = (timeKEY *) DatumGetPointer(x);
timeKEY *arg2 = (timeKEY *) DatumGetPointer(y);
/* for leaf items we expect lower == upper, so only compare lower */
return DatumGetInt32(DirectFunctionCall2(time_cmp,
TimeADTGetDatumFast(arg1->lower),
TimeADTGetDatumFast(arg2->lower)));
}
Datum
gbt_time_sortsupport(PG_FUNCTION_ARGS)
{
SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0 );
ssup->comparator = gbt_timekey_ssup_cmp;
ssup->ssup_extra = NULL;
PG_RETURN_VOID();
}
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