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//usr/include/pgsql/server/commands/variable.h

/*
 * variable.h
 *		Routines for handling specialized SET variables.
 *
 * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/commands/variable.h
 */
#ifndef VARIABLE_H
#define VARIABLE_H

#include "utils/guc.h"

extern bool check_datestyle(char **newval, void **extra, GucSource source);
extern void assign_datestyle(const char *newval, void *extra);
extern bool check_timezone(char **newval, void **extra, GucSource source);
extern void assign_timezone(const char *newval, void *extra);
extern const char *show_timezone(void);
extern bool check_log_timezone(char **newval, void **extra, GucSource source);
extern void assign_log_timezone(const char *newval, void *extra);
extern const char *show_log_timezone(void);
extern bool check_transaction_read_only(bool *newval, void **extra, GucSource source);
extern bool check_XactIsoLevel(char **newval, void **extra, GucSource source);
extern void assign_XactIsoLevel(const char *newval, void *extra);
extern const char *show_XactIsoLevel(void);
extern bool check_transaction_deferrable(bool *newval, void **extra, GucSource source);
extern bool check_random_seed(double *newval, void **extra, GucSource source);
extern void assign_random_seed(double newval, void *extra);
extern const char *show_random_seed(void);
extern bool check_client_encoding(char **newval, void **extra, GucSource source);
extern void assign_client_encoding(const char *newval, void *extra);
extern bool check_session_authorization(char **newval, void **extra, GucSource source);
extern void assign_session_authorization(const char *newval, void *extra);
extern bool check_role(char **newval, void **extra, GucSource source);
extern void assign_role(const char *newval, void *extra);
extern const char *show_role(void);

#endif   /* VARIABLE_H */