greenplumn btree_gist 源码
greenplumn btree_gist 代码
文件路径：/contrib/btree_gist/btree_gist.c
/*
* contrib/btree_gist/btree_gist.c
*/
#include "postgres.h"
#include "btree_gist.h"
PG_MODULE_MAGIC;
PG_FUNCTION_INFO_V1(gbt_decompress);
PG_FUNCTION_INFO_V1(gbtreekey_in);
PG_FUNCTION_INFO_V1(gbtreekey_out);
/**************************************************
* In/Out for keys
**************************************************/
Datum
gbtreekey_in(PG_FUNCTION_ARGS)
{
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("<datatype>key_in() not implemented")));
PG_RETURN_POINTER(NULL);
}
#include "btree_utils_var.h"
#include "utils/builtins.h"
Datum
gbtreekey_out(PG_FUNCTION_ARGS)
{
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("<datatype>key_out() not implemented")));
PG_RETURN_POINTER(NULL);
}
/*
** GiST DeCompress methods
** do not do anything.
*/
Datum
gbt_decompress(PG_FUNCTION_ARGS)
{
PG_RETURN_POINTER(PG_GETARG_POINTER(0));
}
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