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/*-------------------------------------------------------------------------
*
* tableam.h
* POSTGRES table access method definitions.
*
*
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/access/tableam.h
*
*-------------------------------------------------------------------------
*/
#ifndef TABLEAM_H
#define TABLEAM_H
#include "utils/guc.h"
#define DEFAULT_TABLE_ACCESS_METHOD "heap"
extern char *default_table_access_method;
/*
* API struct for a table AM. Note this must be allocated in a
* server-lifetime manner, typically as a static const struct, which then gets
* returned by FormData_pg_am.amhandler.
*/
typedef struct TableAmRoutine
{
/* this must be set to T_TableAmRoutine */
NodeTag type;
} TableAmRoutine;
/*
* Functions in tableamapi.c
*/
extern const TableAmRoutine *GetTableAmRoutine(Oid amhandler);
extern const TableAmRoutine *GetTableAmRoutineByAmId(Oid amoid);
extern const TableAmRoutine *GetHeapamTableAmRoutine(void);
extern bool check_default_table_access_method(char **newval, void **extra,
GucSource source);
#endif /* TABLEAM_H */
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