mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-09-06 12:29:20 +02:00
- Add aligment for interval data types - Avoid floating point overflow in penalty functions Janko Richter <jankorichter@yahoo.de> and teodor
230 lines
6.1 KiB
C
230 lines
6.1 KiB
C
#include "btree_gist.h"
|
|
#include "btree_utils_num.h"
|
|
|
|
typedef struct
|
|
{
|
|
Interval lower, upper;
|
|
} intvKEY;
|
|
|
|
|
|
/*
|
|
** Interval ops
|
|
*/
|
|
PG_FUNCTION_INFO_V1(gbt_intv_compress);
|
|
PG_FUNCTION_INFO_V1(gbt_intv_decompress);
|
|
PG_FUNCTION_INFO_V1(gbt_intv_union);
|
|
PG_FUNCTION_INFO_V1(gbt_intv_picksplit);
|
|
PG_FUNCTION_INFO_V1(gbt_intv_consistent);
|
|
PG_FUNCTION_INFO_V1(gbt_intv_penalty);
|
|
PG_FUNCTION_INFO_V1(gbt_intv_same);
|
|
|
|
Datum gbt_intv_compress(PG_FUNCTION_ARGS);
|
|
Datum gbt_intv_decompress(PG_FUNCTION_ARGS);
|
|
Datum gbt_intv_union(PG_FUNCTION_ARGS);
|
|
Datum gbt_intv_picksplit(PG_FUNCTION_ARGS);
|
|
Datum gbt_intv_consistent(PG_FUNCTION_ARGS);
|
|
Datum gbt_intv_penalty(PG_FUNCTION_ARGS);
|
|
Datum gbt_intv_same(PG_FUNCTION_ARGS);
|
|
|
|
|
|
static bool gbt_intvgt (const void *a, const void *b)
|
|
{
|
|
return DatumGetBool(DirectFunctionCall2 ( interval_gt , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) ));
|
|
}
|
|
|
|
static bool gbt_intvge (const void *a, const void *b)
|
|
{
|
|
return DatumGetBool(DirectFunctionCall2 ( interval_ge , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) ));
|
|
}
|
|
|
|
static bool gbt_intveq (const void *a, const void *b)
|
|
{
|
|
return DatumGetBool(DirectFunctionCall2 ( interval_eq , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) ));
|
|
}
|
|
|
|
static bool gbt_intvle (const void *a, const void *b)
|
|
{
|
|
return DatumGetBool(DirectFunctionCall2 ( interval_le , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) ));
|
|
}
|
|
|
|
static bool gbt_intvlt (const void *a, const void *b)
|
|
{
|
|
return DatumGetBool(DirectFunctionCall2 ( interval_lt , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) ));
|
|
}
|
|
|
|
static int
|
|
gbt_intvkey_cmp(const void *a, const void *b)
|
|
{
|
|
return DatumGetInt32 (
|
|
DirectFunctionCall2 ( interval_cmp ,
|
|
IntervalPGetDatum(((Nsrt *) a)->t) ,
|
|
IntervalPGetDatum(((Nsrt *) b)->t)
|
|
)
|
|
);
|
|
}
|
|
|
|
|
|
static double intr2num ( const Interval * i )
|
|
{
|
|
double ret = 0.0;
|
|
struct pg_tm tm;
|
|
fsec_t fsec;
|
|
interval2tm( *i, &tm, &fsec);
|
|
ret += ( tm.tm_year * 360.0 * 86400.0 ) ;
|
|
ret += ( tm.tm_mon * 12.0 * 86400.0 ) ;
|
|
ret += ( tm.tm_mday * 86400.0 ) ;
|
|
ret += ( tm.tm_hour * 3600.0 ) ;
|
|
ret += ( tm.tm_min * 60.0 ) ;
|
|
ret += ( tm.tm_sec ) ;
|
|
ret += ( fsec / 1000000.0 );
|
|
|
|
return ( ret );
|
|
}
|
|
|
|
#define INTERVALSIZE 12
|
|
|
|
static const gbtree_ninfo tinfo =
|
|
{
|
|
gbt_t_intv,
|
|
sizeof(Interval),
|
|
gbt_intvgt,
|
|
gbt_intvge,
|
|
gbt_intveq,
|
|
gbt_intvle,
|
|
gbt_intvlt,
|
|
gbt_intvkey_cmp
|
|
};
|
|
|
|
|
|
/**************************************************
|
|
* interval ops
|
|
**************************************************/
|
|
|
|
|
|
Datum
|
|
gbt_intv_compress(PG_FUNCTION_ARGS)
|
|
{
|
|
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
|
|
GISTENTRY *retval = entry;
|
|
if ( entry->leafkey || INTERVALSIZE != sizeof(Interval) ) {
|
|
char *r = ( char * ) palloc(2 * INTERVALSIZE);
|
|
|
|
retval = palloc(sizeof(GISTENTRY));
|
|
|
|
if ( entry->leafkey ) {
|
|
Interval *key = DatumGetIntervalP(entry->key);
|
|
memcpy( (void*) r , (void*)key, INTERVALSIZE);
|
|
memcpy( (void*)(r + INTERVALSIZE), (void*)key, INTERVALSIZE);
|
|
} else {
|
|
intvKEY *key = ( intvKEY * ) DatumGetPointer(entry->key);
|
|
memcpy(r, &key->lower, INTERVALSIZE);
|
|
memcpy(r + INTERVALSIZE, &key->upper, INTERVALSIZE);
|
|
}
|
|
gistentryinit(*retval, PointerGetDatum(r),
|
|
entry->rel, entry->page,
|
|
entry->offset, 2 * INTERVALSIZE, FALSE);
|
|
}
|
|
|
|
PG_RETURN_POINTER(retval);
|
|
|
|
}
|
|
|
|
Datum
|
|
gbt_intv_decompress(PG_FUNCTION_ARGS)
|
|
{
|
|
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
|
|
GISTENTRY *retval = entry;
|
|
|
|
if ( INTERVALSIZE != sizeof(Interval) ) {
|
|
intvKEY *r = palloc(sizeof(intvKEY));
|
|
char *key = DatumGetPointer(entry->key);
|
|
|
|
retval = palloc(sizeof(GISTENTRY));
|
|
memcpy( &r->lower, key, INTERVALSIZE);
|
|
memcpy( &r->upper, key+ INTERVALSIZE, INTERVALSIZE);
|
|
|
|
gistentryinit(*retval, PointerGetDatum(r),
|
|
entry->rel, entry->page,
|
|
entry->offset, sizeof(intvKEY), FALSE);
|
|
}
|
|
PG_RETURN_POINTER(retval);
|
|
}
|
|
|
|
|
|
Datum
|
|
gbt_intv_consistent(PG_FUNCTION_ARGS)
|
|
{
|
|
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
|
|
Interval *query = PG_GETARG_INTERVAL_P(1);
|
|
intvKEY *kkk = (intvKEY *) 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_intv_union(PG_FUNCTION_ARGS)
|
|
{
|
|
GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
|
|
void *out = palloc(sizeof(intvKEY));
|
|
*(int *) PG_GETARG_POINTER(1) = sizeof(intvKEY);
|
|
PG_RETURN_POINTER( gbt_num_union ( (void*)out, entryvec, &tinfo ) );
|
|
}
|
|
|
|
|
|
Datum
|
|
gbt_intv_penalty(PG_FUNCTION_ARGS)
|
|
{
|
|
intvKEY *origentry = (intvKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
|
|
intvKEY *newentry = (intvKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key);
|
|
float *result = (float *) PG_GETARG_POINTER(2);
|
|
double iorg[2], inew[2], res;
|
|
|
|
iorg[0] = intr2num ( &origentry->lower );
|
|
iorg[1] = intr2num ( &origentry->upper );
|
|
inew[0] = intr2num ( &newentry->lower );
|
|
inew[1] = intr2num ( &newentry->upper );
|
|
|
|
penalty_range_enlarge ( iorg[0], iorg[1], inew[0], inew[1] );
|
|
|
|
*result = 0.0;
|
|
|
|
if ( res > 0 ){
|
|
*result += FLT_MIN ;
|
|
*result += (float) ( res / ( res + iorg[1] - iorg[0] ) );
|
|
*result *= ( FLT_MAX / ( ( (GISTENTRY *) PG_GETARG_POINTER(0))->rel->rd_att->natts + 1 ) );
|
|
}
|
|
|
|
PG_RETURN_POINTER(result);
|
|
|
|
}
|
|
|
|
Datum
|
|
gbt_intv_picksplit(PG_FUNCTION_ARGS)
|
|
{
|
|
PG_RETURN_POINTER(gbt_num_picksplit(
|
|
(GistEntryVector *) PG_GETARG_POINTER(0),
|
|
(GIST_SPLITVEC *) PG_GETARG_POINTER(1),
|
|
&tinfo
|
|
));
|
|
}
|
|
|
|
Datum
|
|
gbt_intv_same(PG_FUNCTION_ARGS)
|
|
{
|
|
intvKEY *b1 = (intvKEY *) PG_GETARG_POINTER(0);
|
|
intvKEY *b2 = (intvKEY *) PG_GETARG_POINTER(1);
|
|
bool *result = (bool *) PG_GETARG_POINTER(2);
|
|
|
|
*result = gbt_num_same ( (void*)b1, (void*)b2, &tinfo );
|
|
PG_RETURN_POINTER(result);
|
|
}
|
|
|