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PolarDB-for-PostgreSQL
/contrib
/btree_gist
/
btree_time.c 
342 строки · 8.3 Кб
1
/*
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 * contrib/btree_gist/btree_time.c
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 */
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#include "postgres.h"
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#include "btree_gist.h"
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#include "btree_utils_num.h"
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#include "utils/builtins.h"
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#include "utils/date.h"
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#include "utils/timestamp.h"
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typedef struct
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{
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	TimeADT		lower;
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	TimeADT		upper;
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} timeKEY;
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/*
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** time ops
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*/
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PG_FUNCTION_INFO_V1(gbt_time_compress);
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PG_FUNCTION_INFO_V1(gbt_timetz_compress);
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PG_FUNCTION_INFO_V1(gbt_time_fetch);
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PG_FUNCTION_INFO_V1(gbt_time_union);
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PG_FUNCTION_INFO_V1(gbt_time_picksplit);
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PG_FUNCTION_INFO_V1(gbt_time_consistent);
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PG_FUNCTION_INFO_V1(gbt_time_distance);
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PG_FUNCTION_INFO_V1(gbt_timetz_consistent);
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PG_FUNCTION_INFO_V1(gbt_time_penalty);
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PG_FUNCTION_INFO_V1(gbt_time_same);
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#ifdef USE_FLOAT8_BYVAL
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#define TimeADTGetDatumFast(X) TimeADTGetDatum(X)
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#else
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#define TimeADTGetDatumFast(X) PointerGetDatum(&(X))
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#endif
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static bool
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gbt_timegt(const void *a, const void *b, FmgrInfo *flinfo)
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{
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	const TimeADT *aa = (const TimeADT *) a;
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	const TimeADT *bb = (const TimeADT *) b;
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	return DatumGetBool(DirectFunctionCall2(time_gt,
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											TimeADTGetDatumFast(*aa),
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											TimeADTGetDatumFast(*bb)));
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}
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static bool
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gbt_timege(const void *a, const void *b, FmgrInfo *flinfo)
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{
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	const TimeADT *aa = (const TimeADT *) a;
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	const TimeADT *bb = (const TimeADT *) b;
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	return DatumGetBool(DirectFunctionCall2(time_ge,
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											TimeADTGetDatumFast(*aa),
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											TimeADTGetDatumFast(*bb)));
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}
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static bool
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gbt_timeeq(const void *a, const void *b, FmgrInfo *flinfo)
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{
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	const TimeADT *aa = (const TimeADT *) a;
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	const TimeADT *bb = (const TimeADT *) b;
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	return DatumGetBool(DirectFunctionCall2(time_eq,
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											TimeADTGetDatumFast(*aa),
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											TimeADTGetDatumFast(*bb)));
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}
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static bool
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gbt_timele(const void *a, const void *b, FmgrInfo *flinfo)
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{
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	const TimeADT *aa = (const TimeADT *) a;
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	const TimeADT *bb = (const TimeADT *) b;
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	return DatumGetBool(DirectFunctionCall2(time_le,
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											TimeADTGetDatumFast(*aa),
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											TimeADTGetDatumFast(*bb)));
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}
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static bool
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gbt_timelt(const void *a, const void *b, FmgrInfo *flinfo)
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{
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	const TimeADT *aa = (const TimeADT *) a;
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	const TimeADT *bb = (const TimeADT *) b;
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	return DatumGetBool(DirectFunctionCall2(time_lt,
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											TimeADTGetDatumFast(*aa),
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											TimeADTGetDatumFast(*bb)));
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}
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static int
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gbt_timekey_cmp(const void *a, const void *b, FmgrInfo *flinfo)
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{
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	timeKEY    *ia = (timeKEY *) (((const Nsrt *) a)->t);
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	timeKEY    *ib = (timeKEY *) (((const Nsrt *) b)->t);
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	int			res;
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	res = DatumGetInt32(DirectFunctionCall2(time_cmp, TimeADTGetDatumFast(ia->lower), TimeADTGetDatumFast(ib->lower)));
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	if (res == 0)
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		return DatumGetInt32(DirectFunctionCall2(time_cmp, TimeADTGetDatumFast(ia->upper), TimeADTGetDatumFast(ib->upper)));
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	return res;
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}
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static float8
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gbt_time_dist(const void *a, const void *b, FmgrInfo *flinfo)
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{
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	const TimeADT *aa = (const TimeADT *) a;
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	const TimeADT *bb = (const TimeADT *) b;
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	Interval   *i;
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	i = DatumGetIntervalP(DirectFunctionCall2(time_mi_time,
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											  TimeADTGetDatumFast(*aa),
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											  TimeADTGetDatumFast(*bb)));
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	return (float8) Abs(INTERVAL_TO_SEC(i));
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}
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static const gbtree_ninfo tinfo =
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{
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	gbt_t_time,
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	sizeof(TimeADT),
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	16,							/* sizeof(gbtreekey16) */
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	gbt_timegt,
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	gbt_timege,
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	gbt_timeeq,
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	gbt_timele,
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	gbt_timelt,
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	gbt_timekey_cmp,
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	gbt_time_dist
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};
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PG_FUNCTION_INFO_V1(time_dist);
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Datum
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time_dist(PG_FUNCTION_ARGS)
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{
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	Datum		diff = DirectFunctionCall2(time_mi_time,
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										   PG_GETARG_DATUM(0),
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										   PG_GETARG_DATUM(1));
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148
	PG_RETURN_INTERVAL_P(abs_interval(DatumGetIntervalP(diff)));
149
}
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151


152
/**************************************************
153
 * time ops
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 **************************************************/
155


156


157


158
Datum
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gbt_time_compress(PG_FUNCTION_ARGS)
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{
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	GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
162


163
	PG_RETURN_POINTER(gbt_num_compress(entry, &tinfo));
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}
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166


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Datum
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gbt_timetz_compress(PG_FUNCTION_ARGS)
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{
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	GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
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	GISTENTRY  *retval;
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173
	if (entry->leafkey)
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	{
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		timeKEY    *r = (timeKEY *) palloc(sizeof(timeKEY));
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		TimeTzADT  *tz = DatumGetTimeTzADTP(entry->key);
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		TimeADT		tmp;
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		retval = palloc(sizeof(GISTENTRY));
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		/* We are using the time + zone only to compress */
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		tmp = tz->time + (tz->zone * INT64CONST(1000000));
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		r->lower = r->upper = tmp;
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		gistentryinit(*retval, PointerGetDatum(r),
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					  entry->rel, entry->page,
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					  entry->offset, false);
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	}
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	else
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		retval = entry;
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	PG_RETURN_POINTER(retval);
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}
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Datum
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gbt_time_fetch(PG_FUNCTION_ARGS)
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{
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	GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
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198
	PG_RETURN_POINTER(gbt_num_fetch(entry, &tinfo));
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}
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201
Datum
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gbt_time_consistent(PG_FUNCTION_ARGS)
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{
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	GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
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	TimeADT		query = PG_GETARG_TIMEADT(1);
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	StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
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	/* Oid		subtype = PG_GETARG_OID(3); */
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	bool	   *recheck = (bool *) PG_GETARG_POINTER(4);
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	timeKEY    *kkk = (timeKEY *) DatumGetPointer(entry->key);
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	GBT_NUMKEY_R key;
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	/* All cases served by this function are exact */
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	*recheck = false;
215


216
	key.lower = (GBT_NUMKEY *) &kkk->lower;
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	key.upper = (GBT_NUMKEY *) &kkk->upper;
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219
	PG_RETURN_BOOL(
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				   gbt_num_consistent(&key, (void *) &query, &strategy, GIST_LEAF(entry), &tinfo, fcinfo->flinfo)
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		);
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}
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Datum
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gbt_time_distance(PG_FUNCTION_ARGS)
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{
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	GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
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	TimeADT		query = PG_GETARG_TIMEADT(1);
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	/* Oid		subtype = PG_GETARG_OID(3); */
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	timeKEY    *kkk = (timeKEY *) DatumGetPointer(entry->key);
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	GBT_NUMKEY_R key;
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	key.lower = (GBT_NUMKEY *) &kkk->lower;
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	key.upper = (GBT_NUMKEY *) &kkk->upper;
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	PG_RETURN_FLOAT8(
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					 gbt_num_distance(&key, (void *) &query, GIST_LEAF(entry), &tinfo, fcinfo->flinfo)
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		);
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}
241


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Datum
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gbt_timetz_consistent(PG_FUNCTION_ARGS)
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{
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	GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
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	TimeTzADT  *query = PG_GETARG_TIMETZADT_P(1);
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	StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
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	/* Oid		subtype = PG_GETARG_OID(3); */
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	bool	   *recheck = (bool *) PG_GETARG_POINTER(4);
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	timeKEY    *kkk = (timeKEY *) DatumGetPointer(entry->key);
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	TimeADT		qqq;
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	GBT_NUMKEY_R key;
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	/* All cases served by this function are inexact */
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	*recheck = true;
257


258
	qqq = query->time + (query->zone * INT64CONST(1000000));
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260
	key.lower = (GBT_NUMKEY *) &kkk->lower;
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	key.upper = (GBT_NUMKEY *) &kkk->upper;
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	PG_RETURN_BOOL(
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				   gbt_num_consistent(&key, (void *) &qqq, &strategy, GIST_LEAF(entry), &tinfo, fcinfo->flinfo)
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		);
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}
267


268


269
Datum
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gbt_time_union(PG_FUNCTION_ARGS)
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{
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	GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
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	void	   *out = palloc(sizeof(timeKEY));
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	*(int *) PG_GETARG_POINTER(1) = sizeof(timeKEY);
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	PG_RETURN_POINTER(gbt_num_union((void *) out, entryvec, &tinfo, fcinfo->flinfo));
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}
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Datum
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gbt_time_penalty(PG_FUNCTION_ARGS)
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{
283
	timeKEY    *origentry = (timeKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
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	timeKEY    *newentry = (timeKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key);
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	float	   *result = (float *) PG_GETARG_POINTER(2);
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	Interval   *intr;
287
	double		res;
288
	double		res2;
289


290
	intr = DatumGetIntervalP(DirectFunctionCall2(
291
												 time_mi_time,
292
												 TimeADTGetDatumFast(newentry->upper),
293
												 TimeADTGetDatumFast(origentry->upper)));
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	res = INTERVAL_TO_SEC(intr);
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	res = Max(res, 0);
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	intr = DatumGetIntervalP(DirectFunctionCall2(
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												 time_mi_time,
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												 TimeADTGetDatumFast(origentry->lower),
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												 TimeADTGetDatumFast(newentry->lower)));
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	res2 = INTERVAL_TO_SEC(intr);
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	res2 = Max(res2, 0);
303


304
	res += res2;
305


306
	*result = 0.0;
307


308
	if (res > 0)
309
	{
310
		intr = DatumGetIntervalP(DirectFunctionCall2(
311
													 time_mi_time,
312
													 TimeADTGetDatumFast(origentry->upper),
313
													 TimeADTGetDatumFast(origentry->lower)));
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		*result += FLT_MIN;
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		*result += (float) (res / (res + INTERVAL_TO_SEC(intr)));
316
		*result *= (FLT_MAX / (((GISTENTRY *) PG_GETARG_POINTER(0))->rel->rd_att->natts + 1));
317
	}
318


319
	PG_RETURN_POINTER(result);
320
}
321


322


323
Datum
324
gbt_time_picksplit(PG_FUNCTION_ARGS)
325
{
326
	PG_RETURN_POINTER(gbt_num_picksplit(
327
										(GistEntryVector *) PG_GETARG_POINTER(0),
328
										(GIST_SPLITVEC *) PG_GETARG_POINTER(1),
329
										&tinfo, fcinfo->flinfo
330
										));
331
}
332


333
Datum
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gbt_time_same(PG_FUNCTION_ARGS)
335
{
336
	timeKEY    *b1 = (timeKEY *) PG_GETARG_POINTER(0);
337
	timeKEY    *b2 = (timeKEY *) PG_GETARG_POINTER(1);
338
	bool	   *result = (bool *) PG_GETARG_POINTER(2);
339


340
	*result = gbt_num_same((void *) b1, (void *) b2, &tinfo, fcinfo->flinfo);
341
	PG_RETURN_POINTER(result);
342
}
343

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