btree_int2.c File Reference

#include "postgres.h"
#include "btree_gist.h"
#include "btree_utils_num.h"
#include "common/int.h"
#include "utils/sortsupport.h"

Include dependency graph for btree_int2.c:

Go to the source code of this file.

Data Structures
struct	int16key

Typedefs
typedef struct int16key	int16KEY

Functions
	PG_FUNCTION_INFO_V1 (gbt_int2_compress)
	PG_FUNCTION_INFO_V1 (gbt_int2_fetch)
	PG_FUNCTION_INFO_V1 (gbt_int2_union)
	PG_FUNCTION_INFO_V1 (gbt_int2_picksplit)
	PG_FUNCTION_INFO_V1 (gbt_int2_consistent)
	PG_FUNCTION_INFO_V1 (gbt_int2_distance)
	PG_FUNCTION_INFO_V1 (gbt_int2_penalty)
	PG_FUNCTION_INFO_V1 (gbt_int2_same)
	PG_FUNCTION_INFO_V1 (gbt_int2_sortsupport)
static bool	gbt_int2gt (const void *a, const void *b, FmgrInfo *flinfo)
static bool	gbt_int2ge (const void *a, const void *b, FmgrInfo *flinfo)
static bool	gbt_int2eq (const void *a, const void *b, FmgrInfo *flinfo)
static bool	gbt_int2le (const void *a, const void *b, FmgrInfo *flinfo)
static bool	gbt_int2lt (const void *a, const void *b, FmgrInfo *flinfo)
static int	gbt_int2key_cmp (const void *a, const void *b, FmgrInfo *flinfo)
static float8	gbt_int2_dist (const void *a, const void *b, FmgrInfo *flinfo)
	PG_FUNCTION_INFO_V1 (int2_dist)
Datum	int2_dist (PG_FUNCTION_ARGS)
Datum	gbt_int2_compress (PG_FUNCTION_ARGS)
Datum	gbt_int2_fetch (PG_FUNCTION_ARGS)
Datum	gbt_int2_consistent (PG_FUNCTION_ARGS)
Datum	gbt_int2_distance (PG_FUNCTION_ARGS)
Datum	gbt_int2_union (PG_FUNCTION_ARGS)
Datum	gbt_int2_penalty (PG_FUNCTION_ARGS)
Datum	gbt_int2_picksplit (PG_FUNCTION_ARGS)
Datum	gbt_int2_same (PG_FUNCTION_ARGS)
static int	gbt_int2_ssup_cmp (Datum x, Datum y, SortSupport ssup)
Datum	gbt_int2_sortsupport (PG_FUNCTION_ARGS)

Variables
static const gbtree_ninfo	tinfo

Typedef Documentation

int16KEY

typedef struct int16key int16KEY

Function Documentation

gbt_int2_compress()

Datum gbt_int2_compress

(

PG_FUNCTION_ARGS

)

Definition at line 120 of file btree_int2.c.

{
    GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
 
    PG_RETURN_POINTER(gbt_num_compress(entry, &tinfo));
}

References gbt_num_compress(), PG_GETARG_POINTER, PG_RETURN_POINTER, and tinfo.

gbt_int2_consistent()

Datum gbt_int2_consistent

(

PG_FUNCTION_ARGS

)

Definition at line 136 of file btree_int2.c.

{
    GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
    int16       query = PG_GETARG_INT16(1);
    StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
 
    /* Oid      subtype = PG_GETARG_OID(3); */
    bool       *recheck = (bool *) PG_GETARG_POINTER(4);
    int16KEY   *kkk = (int16KEY *) 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));
}

References DatumGetPointer(), gbt_num_consistent(), GIST_LEAF, GISTENTRY::key, sort-test::key, int16key::lower, PG_GETARG_INT16, PG_GETARG_POINTER, PG_GETARG_UINT16, PG_RETURN_BOOL, tinfo, and int16key::upper.

gbt_int2_dist()

static float8 gbt_int2_dist ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 73 of file btree_int2.c.

{
    return GET_FLOAT_DISTANCE(int16, a, b);
}

References a, b, and GET_FLOAT_DISTANCE.

gbt_int2_distance()

Datum gbt_int2_distance

(

PG_FUNCTION_ARGS

)

Definition at line 158 of file btree_int2.c.

{
    GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
    int16       query = PG_GETARG_INT16(1);
 
    /* Oid      subtype = PG_GETARG_OID(3); */
    int16KEY   *kkk = (int16KEY *) 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));
}

References DatumGetPointer(), gbt_num_distance(), GIST_LEAF, GISTENTRY::key, sort-test::key, int16key::lower, PG_GETARG_INT16, PG_GETARG_POINTER, PG_RETURN_FLOAT8, tinfo, and int16key::upper.

gbt_int2_fetch()

Datum gbt_int2_fetch

(

PG_FUNCTION_ARGS

)

Definition at line 128 of file btree_int2.c.

{
    GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
 
    PG_RETURN_POINTER(gbt_num_fetch(entry, &tinfo));
}

References gbt_num_fetch(), PG_GETARG_POINTER, PG_RETURN_POINTER, and tinfo.

gbt_int2_penalty()

Datum gbt_int2_penalty

(

PG_FUNCTION_ARGS

)

Definition at line 185 of file btree_int2.c.

{
    int16KEY   *origentry = (int16KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
    int16KEY   *newentry = (int16KEY *) 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);
}

References DatumGetPointer(), sort-test::key, int16key::lower, penalty_num, PG_GETARG_POINTER, PG_RETURN_POINTER, and int16key::upper.

gbt_int2_picksplit()

Datum gbt_int2_picksplit

(

PG_FUNCTION_ARGS

)

Definition at line 197 of file btree_int2.c.

{
    PG_RETURN_POINTER(gbt_num_picksplit((GistEntryVector *) PG_GETARG_POINTER(0),
                                        (GIST_SPLITVEC *) PG_GETARG_POINTER(1),
                                        &tinfo, fcinfo->flinfo));
}

References gbt_num_picksplit(), PG_GETARG_POINTER, PG_RETURN_POINTER, and tinfo.

gbt_int2_same()

Datum gbt_int2_same

(

PG_FUNCTION_ARGS

)

Definition at line 205 of file btree_int2.c.

{
    int16KEY   *b1 = (int16KEY *) PG_GETARG_POINTER(0);
    int16KEY   *b2 = (int16KEY *) 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);
}

References gbt_num_same(), PG_GETARG_POINTER, PG_RETURN_POINTER, and tinfo.

gbt_int2_sortsupport()

Datum gbt_int2_sortsupport

(

PG_FUNCTION_ARGS

)

Definition at line 231 of file btree_int2.c.

{
    SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0);
 
    ssup->comparator = gbt_int2_ssup_cmp;
    PG_RETURN_VOID();
}

References SortSupportData::comparator, gbt_int2_ssup_cmp(), PG_GETARG_POINTER, and PG_RETURN_VOID.

gbt_int2_ssup_cmp()

static int gbt_int2_ssup_cmp ( Datum  x, Datum  y, SortSupport  ssup  )

static

Definition at line 216 of file btree_int2.c.

{
    int16KEY   *arg1 = (int16KEY *) DatumGetPointer(x);
    int16KEY   *arg2 = (int16KEY *) DatumGetPointer(y);
 
    /* for leaf items we expect lower == upper, so only compare lower */
    if (arg1->lower < arg2->lower)
        return -1;
    else if (arg1->lower > arg2->lower)
        return 1;
    else
        return 0;
}

References DatumGetPointer(), int16key::lower, x, and y.

Referenced by gbt_int2_sortsupport().

gbt_int2_union()

Datum gbt_int2_union

(

PG_FUNCTION_ARGS

)

Definition at line 175 of file btree_int2.c.

{
    GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
    void       *out = palloc(sizeof(int16KEY));
 
    *(int *) PG_GETARG_POINTER(1) = sizeof(int16KEY);
    PG_RETURN_POINTER(gbt_num_union(out, entryvec, &tinfo, fcinfo->flinfo));
}

References gbt_num_union(), palloc(), PG_GETARG_POINTER, PG_RETURN_POINTER, and tinfo.

gbt_int2eq()

static bool gbt_int2eq ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 40 of file btree_int2.c.

{
    return (*((const int16 *) a) == *((const int16 *) b));
}

References a, and b.

gbt_int2ge()

static bool gbt_int2ge ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 35 of file btree_int2.c.

{
    return (*((const int16 *) a) >= *((const int16 *) b));
}

References a, and b.

gbt_int2gt()

static bool gbt_int2gt ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 30 of file btree_int2.c.

{
    return (*((const int16 *) a) > *((const int16 *) b));
}

References a, and b.

gbt_int2key_cmp()

static int gbt_int2key_cmp ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 56 of file btree_int2.c.

{
    int16KEY   *ia = (int16KEY *) (((const Nsrt *) a)->t);
    int16KEY   *ib = (int16KEY *) (((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;
}

References a, b, int16key::lower, and int16key::upper.

gbt_int2le()

static bool gbt_int2le ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 45 of file btree_int2.c.

{
    return (*((const int16 *) a) <= *((const int16 *) b));
}

References a, and b.

gbt_int2lt()

static bool gbt_int2lt ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 50 of file btree_int2.c.

{
    return (*((const int16 *) a) < *((const int16 *) b));
}

References a, and b.

int2_dist()

Datum int2_dist

(

PG_FUNCTION_ARGS

)

Definition at line 96 of file btree_int2.c.

{
    int16       a = PG_GETARG_INT16(0);
    int16       b = PG_GETARG_INT16(1);
    int16       r;
    int16       ra;
 
    if (pg_sub_s16_overflow(a, b, &r) ||
        r == PG_INT16_MIN)
        ereport(ERROR,
                (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
                 errmsg("smallint out of range")));
 
    ra = abs(r);
 
    PG_RETURN_INT16(ra);
}

References a, b, ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT16, PG_INT16_MIN, PG_RETURN_INT16, and pg_sub_s16_overflow().

PG_FUNCTION_INFO_V1() [1/10]

PG_FUNCTION_INFO_V1

(

gbt_int2_compress

)

PG_FUNCTION_INFO_V1() [2/10]

PG_FUNCTION_INFO_V1

(

gbt_int2_consistent

)

PG_FUNCTION_INFO_V1() [3/10]

PG_FUNCTION_INFO_V1

(

gbt_int2_distance

)

PG_FUNCTION_INFO_V1() [4/10]

PG_FUNCTION_INFO_V1

(

gbt_int2_fetch

)

PG_FUNCTION_INFO_V1() [5/10]

PG_FUNCTION_INFO_V1

(

gbt_int2_penalty

)

PG_FUNCTION_INFO_V1() [6/10]

PG_FUNCTION_INFO_V1

(

gbt_int2_picksplit

)

PG_FUNCTION_INFO_V1() [7/10]

PG_FUNCTION_INFO_V1

(

gbt_int2_same

)

PG_FUNCTION_INFO_V1() [8/10]

PG_FUNCTION_INFO_V1

(

gbt_int2_sortsupport

)

PG_FUNCTION_INFO_V1() [9/10]

PG_FUNCTION_INFO_V1

(

gbt_int2_union

)

PG_FUNCTION_INFO_V1() [10/10]

PG_FUNCTION_INFO_V1

(

int2_dist

)

Variable Documentation

tinfo

const gbtree_ninfo tinfo

static

Initial value:

=
{
    gbt_t_int2,
    sizeof(int16),
    4,                          
    gbt_int2gt,
    gbt_int2ge,
    gbt_int2eq,
    gbt_int2le,
    gbt_int2lt,
    gbt_int2key_cmp,
    gbt_int2_dist
}

Definition at line 79 of file btree_int2.c.

Referenced by gbt_int2_compress(), gbt_int2_consistent(), gbt_int2_distance(), gbt_int2_fetch(), gbt_int2_picksplit(), gbt_int2_same(), and gbt_int2_union().