postgresql/contrib/btree_gist/btree_bytea.c
2010-09-20 22:08:53 +02:00

160 lines
3.5 KiB
C

/*
* contrib/btree_gist/btree_bytea.c
*/
#include "btree_gist.h"
#include "btree_utils_var.h"
#include "utils/bytea.h"
/*
** Bytea ops
*/
PG_FUNCTION_INFO_V1(gbt_bytea_compress);
PG_FUNCTION_INFO_V1(gbt_bytea_union);
PG_FUNCTION_INFO_V1(gbt_bytea_picksplit);
PG_FUNCTION_INFO_V1(gbt_bytea_consistent);
PG_FUNCTION_INFO_V1(gbt_bytea_penalty);
PG_FUNCTION_INFO_V1(gbt_bytea_same);
Datum gbt_bytea_compress(PG_FUNCTION_ARGS);
Datum gbt_bytea_union(PG_FUNCTION_ARGS);
Datum gbt_bytea_picksplit(PG_FUNCTION_ARGS);
Datum gbt_bytea_consistent(PG_FUNCTION_ARGS);
Datum gbt_bytea_penalty(PG_FUNCTION_ARGS);
Datum gbt_bytea_same(PG_FUNCTION_ARGS);
/* define for comparison */
static bool
gbt_byteagt(const void *a, const void *b)
{
return (DatumGetBool(DirectFunctionCall2(byteagt, PointerGetDatum(a), PointerGetDatum(b))));
}
static bool
gbt_byteage(const void *a, const void *b)
{
return (DatumGetBool(DirectFunctionCall2(byteage, PointerGetDatum(a), PointerGetDatum(b))));
}
static bool
gbt_byteaeq(const void *a, const void *b)
{
return (DatumGetBool(DirectFunctionCall2(byteaeq, PointerGetDatum(a), PointerGetDatum(b))));
}
static bool
gbt_byteale(const void *a, const void *b)
{
return (DatumGetBool(DirectFunctionCall2(byteale, PointerGetDatum(a), PointerGetDatum(b))));
}
static bool
gbt_bytealt(const void *a, const void *b)
{
return (DatumGetBool(DirectFunctionCall2(bytealt, PointerGetDatum(a), PointerGetDatum(b))));
}
static int32
gbt_byteacmp(const bytea *a, const bytea *b)
{
return
(DatumGetInt32(DirectFunctionCall2(byteacmp, PointerGetDatum(a), PointerGetDatum(b))));
}
static const gbtree_vinfo tinfo =
{
gbt_t_bytea,
0,
TRUE,
gbt_byteagt,
gbt_byteage,
gbt_byteaeq,
gbt_byteale,
gbt_bytealt,
gbt_byteacmp,
NULL
};
/**************************************************
* Text ops
**************************************************/
Datum
gbt_bytea_compress(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
PG_RETURN_POINTER(gbt_var_compress(entry, &tinfo));
}
Datum
gbt_bytea_consistent(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
void *query = (void *) DatumGetByteaP(PG_GETARG_DATUM(1));
StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
/* Oid subtype = PG_GETARG_OID(3); */
bool *recheck = (bool *) PG_GETARG_POINTER(4);
bool retval;
GBT_VARKEY *key = (GBT_VARKEY *) DatumGetPointer(entry->key);
GBT_VARKEY_R r = gbt_var_key_readable(key);
/* All cases served by this function are exact */
*recheck = false;
retval = gbt_var_consistent(&r, query, &strategy, GIST_LEAF(entry), &tinfo);
PG_RETURN_BOOL(retval);
}
Datum
gbt_bytea_union(PG_FUNCTION_ARGS)
{
GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
int32 *size = (int *) PG_GETARG_POINTER(1);
PG_RETURN_POINTER(gbt_var_union(entryvec, size, &tinfo));
}
Datum
gbt_bytea_picksplit(PG_FUNCTION_ARGS)
{
GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
GIST_SPLITVEC *v = (GIST_SPLITVEC *) PG_GETARG_POINTER(1);
gbt_var_picksplit(entryvec, v, &tinfo);
PG_RETURN_POINTER(v);
}
Datum
gbt_bytea_same(PG_FUNCTION_ARGS)
{
Datum d1 = PG_GETARG_DATUM(0);
Datum d2 = PG_GETARG_DATUM(1);
bool *result = (bool *) PG_GETARG_POINTER(2);
PG_RETURN_POINTER(gbt_var_same(result, d1, d2, &tinfo));
}
Datum
gbt_bytea_penalty(PG_FUNCTION_ARGS)
{
GISTENTRY *o = (GISTENTRY *) PG_GETARG_POINTER(0);
GISTENTRY *n = (GISTENTRY *) PG_GETARG_POINTER(1);
float *result = (float *) PG_GETARG_POINTER(2);
PG_RETURN_POINTER(gbt_var_penalty(result, o, n, &tinfo));
}