/*
 * variable.h
 *		Routines for handling specialized SET variables.
 *
 * Portions Copyright (c) 1996-2011, 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 const char *assign_datestyle(const char *value,
				 bool doit, GucSource source);
extern const char *assign_timezone(const char *value,
				bool doit, GucSource source);
extern const char *show_timezone(void);
extern const char *assign_log_timezone(const char *value,
					bool doit, GucSource source);
extern const char *show_log_timezone(void);
extern bool assign_transaction_read_only(bool value,
					bool doit, GucSource source);
extern const char *assign_XactIsoLevel(const char *value,
					bool doit, GucSource source);
extern const char *show_XactIsoLevel(void);
extern bool assign_transaction_deferrable(bool newval, bool doit,
					GucSource source);
extern bool assign_random_seed(double value,
				   bool doit, GucSource source);
extern const char *show_random_seed(void);
extern const char *assign_client_encoding(const char *value,
					   bool doit, GucSource source);
extern const char *assign_role(const char *value,
			bool doit, GucSource source);
extern const char *show_role(void);
extern const char *assign_session_authorization(const char *value,
							 bool doit, GucSource source);
extern const char *show_session_authorization(void);

#endif   /* VARIABLE_H */