btree_gist.c File Reference

#include "postgres.h"
#include "access/cmptype.h"
#include "access/stratnum.h"
#include "utils/builtins.h"

Include dependency graph for btree_gist.c:

Go to the source code of this file.

Functions
	PG_MODULE_MAGIC_EXT (.name="btree_gist",.version=PG_VERSION)
	PG_FUNCTION_INFO_V1 (gbt_decompress)
	PG_FUNCTION_INFO_V1 (gbtreekey_in)
	PG_FUNCTION_INFO_V1 (gbtreekey_out)
	PG_FUNCTION_INFO_V1 (gist_stratnum_btree)
Datum	gbtreekey_in (PG_FUNCTION_ARGS)
Datum	gbtreekey_out (PG_FUNCTION_ARGS)
Datum	gbt_decompress (PG_FUNCTION_ARGS)
Datum	gist_stratnum_btree (PG_FUNCTION_ARGS)

Function Documentation

gbt_decompress()

Datum gbt_decompress

(

PG_FUNCTION_ARGS

)

Definition at line 56 of file btree_gist.c.

{
    PG_RETURN_POINTER(PG_GETARG_POINTER(0));
}

References PG_GETARG_POINTER, and PG_RETURN_POINTER.

gbtreekey_in()

Datum gbtreekey_in

(

PG_FUNCTION_ARGS

)

Definition at line 26 of file btree_gist.c.

{
    Oid         typioparam = PG_GETARG_OID(1);
 
    ereport(ERROR,
            (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
             errmsg("cannot accept a value of type %s",
                    format_type_extended(typioparam, -1,
                                         FORMAT_TYPE_ALLOW_INVALID))));
 
    PG_RETURN_VOID();           /* keep compiler quiet */
}

References ereport, errcode(), errmsg(), ERROR, FORMAT_TYPE_ALLOW_INVALID, format_type_extended(), PG_GETARG_OID, and PG_RETURN_VOID.

gbtreekey_out()

Datum gbtreekey_out

(

PG_FUNCTION_ARGS

)

Definition at line 40 of file btree_gist.c.

{
    /* Sadly, we do not receive any indication of the specific type */
    ereport(ERROR,
            (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
             errmsg("cannot display a value of type %s", "gbtreekey?")));
 
    PG_RETURN_VOID();           /* keep compiler quiet */
}

References ereport, errcode(), errmsg(), ERROR, and PG_RETURN_VOID.

gist_stratnum_btree()

Datum gist_stratnum_btree

(

PG_FUNCTION_ARGS

)

Definition at line 65 of file btree_gist.c.

{
    CompareType cmptype = PG_GETARG_INT32(0);
 
    switch (cmptype)
    {
        case COMPARE_EQ:
            PG_RETURN_UINT16(BTEqualStrategyNumber);
        case COMPARE_LT:
            PG_RETURN_UINT16(BTLessStrategyNumber);
        case COMPARE_LE:
            PG_RETURN_UINT16(BTLessEqualStrategyNumber);
        case COMPARE_GT:
            PG_RETURN_UINT16(BTGreaterStrategyNumber);
        case COMPARE_GE:
            PG_RETURN_UINT16(BTGreaterEqualStrategyNumber);
        default:
            PG_RETURN_UINT16(InvalidStrategy);
    }
}

References BTEqualStrategyNumber, BTGreaterEqualStrategyNumber, BTGreaterStrategyNumber, BTLessEqualStrategyNumber, BTLessStrategyNumber, COMPARE_EQ, COMPARE_GE, COMPARE_GT, COMPARE_LE, COMPARE_LT, InvalidStrategy, PG_GETARG_INT32, and PG_RETURN_UINT16.

PG_FUNCTION_INFO_V1() [1/4]

PG_FUNCTION_INFO_V1

(

gbt_decompress

)

PG_FUNCTION_INFO_V1() [2/4]

PG_FUNCTION_INFO_V1

(

gbtreekey_in

)

PG_FUNCTION_INFO_V1() [3/4]

PG_FUNCTION_INFO_V1

(

gbtreekey_out

)

PG_FUNCTION_INFO_V1() [4/4]

PG_FUNCTION_INFO_V1

(

gist_stratnum_btree

)

PG_MODULE_MAGIC_EXT()

PG_MODULE_MAGIC_EXT	(	.	name = "btree_gist",
		.	version = PG_VERSION
	)