~drizzle-trunk/drizzle/development : contents of drizzled/set

~drizzle-trunk/drizzle/development : (revision 673.3.8)

390.1.2 by Monty Taylor Fixed copyright headers in drizzled/	1	/* -- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; --
	2	* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
	3	*
	4	* Copyright (C) 2008 Sun Microsystems
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; version 2 of the License.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program; if not, write to the Free Software
	17	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	18	*/
1 by brian clean slate	19
575.1.6 by Monty Taylor Cleaned up some headers for PCH.	20	#ifndef DRIZZLED_ITEM_SET_H
	21	#define DRIZZLED_ITEM_SET_H
	22
670.1.20 by Monty Taylor Renamed functions to function... everything else is singular.	23	#include <drizzled/function/func.h>
	24	#include <drizzled/function/set_user_var.h>
584.1.15 by Monty Taylor The mega-patch from hell. Renamed sql_class to session (since that's what it is) and removed it and field and table from common_includes.	25
656.1.34 by Monty Taylor Got closer...	26	#include <string>
656.1.34 by Monty Taylor Got closer...	27
1 by brian clean slate	28	/* Classes to support the SET command */
	29
	30
	31	/****************************************************************************
	32	Variables that are changable runtime are declared using the
	33	following classes
	34	****************************************************************************/
	35
	36	class sys_var;
	37	class set_var;
	38	class sys_var_pluginvar; /* opaque */
584.1.15 by Monty Taylor The mega-patch from hell. Renamed sql_class to session (since that's what it is) and removed it and field and table from common_includes.	39	class Time_zone;
1 by brian clean slate	40	typedef struct system_variables SV;
	41	typedef struct my_locale_st MY_LOCALE;
	42
	43	extern TYPELIB bool_typelib, delay_key_write_typelib, sql_mode_typelib,
617 by Brian Aker ulong fixes	44	optimizer_switch_typelib, slave_exec_mode_typelib;
1 by brian clean slate	45
520.1.21 by Brian Aker THD -> Session rename	46	typedef int (sys_check_func)(Session , set_var *);
	47	typedef bool (sys_update_func)(Session , set_var *);
	48	typedef void (sys_after_update_func)(Session ,enum_var_type);
	49	typedef void (sys_set_default_func)(Session , enum_var_type);
520.1.22 by Brian Aker Second pass of thd cleanup	50	typedef unsigned char (sys_value_ptr_func)(Session *session);
1 by brian clean slate	51
	52	struct sys_var_chain
	53	{
	54	sys_var *first;
	55	sys_var *last;
	56	};
	57
	58	class sys_var
	59	{
	60	public:
	61
	62	/**
	63	Enumeration type to indicate for a system variable whether it will be written to the binlog or not.
	64	*/
	65	enum Binlog_status_enum
660.1.3 by Eric Herman removed trailing whitespace with simple script:	66	{
1 by brian clean slate	67	/* The variable value is not in the binlog. */
	68	NOT_IN_BINLOG,
	69	/* The value of the @@session variable is in the binlog. */
	70	SESSION_VARIABLE_IN_BINLOG
	71	/*
	72	Currently, no @@global variable is ever in the binlog, so we
	73	don't need an enumeration value for that.
	74	*/
	75	};
	76
	77	sys_var *next;
	78	struct my_option option_limits; / Updated by by set_var_init() */
482 by Brian Aker Remove uint.	79	uint32_t name_length; /* Updated by by set_var_init() */
1 by brian clean slate	80	const char *name;
	81
	82	sys_after_update_func after_update;
	83	bool no_support_one_shot;
	84	sys_var(const char *name_arg, sys_after_update_func func= NULL,
	85	Binlog_status_enum binlog_status_arg= NOT_IN_BINLOG)
	86	:name(name_arg), after_update(func), no_support_one_shot(1),
	87	binlog_status(binlog_status_arg),
51.1.46 by Jay Pipes Removed/replaced DBUG symbols and standardized TRUE/FALSE	88	m_allow_empty_value(true)
1 by brian clean slate	89	{}
	90	virtual ~sys_var() {}
	91	void chain_sys_var(sys_var_chain *chain_arg)
	92	{
	93	if (chain_arg->last)
	94	chain_arg->last->next= this;
	95	else
	96	chain_arg->first= this;
	97	chain_arg->last= this;
	98	}
520.1.22 by Brian Aker Second pass of thd cleanup	99	virtual bool check(Session session, set_var var);
	100	bool check_enum(Session session, set_var var, const TYPELIB *enum_names);
	101	bool check_set(Session session, set_var var, TYPELIB *enum_names);
	102	virtual bool update(Session session, set_var var)=0;
644 by Brian Aker Clean up warnings for Solaris.	103	virtual void set_default(Session *, enum_var_type)
77.1.7 by Monty Taylor Heap builds clean.	104	{}
1 by brian clean slate	105	virtual SHOW_TYPE show_type() { return SHOW_UNDEF; }
644 by Brian Aker Clean up warnings for Solaris.	106	virtual unsigned char value_ptr(Session , enum_var_type, LEX_STRING *)
1 by brian clean slate	107	{ return 0; }
	108	virtual bool check_type(enum_var_type type)
	109	{ return type != OPT_GLOBAL; } /* Error if not GLOBAL */
	110	virtual bool check_update_type(Item_result type)
	111	{ return type != INT_RESULT; } /* Assume INT */
644 by Brian Aker Clean up warnings for Solaris.	112	virtual bool check_default(enum_var_type)
1 by brian clean slate	113	{ return option_limits == 0; }
520.1.22 by Brian Aker Second pass of thd cleanup	114	Item item(Session session, enum_var_type type, LEX_STRING *base);
1 by brian clean slate	115	virtual bool is_struct() { return 0; }
	116	virtual bool is_readonly() const { return 0; }
	117	virtual sys_var_pluginvar *cast_pluginvar() { return 0; }
	118
	119	protected:
	120	void set_allow_empty_value(bool allow_empty_value)
	121	{
	122	m_allow_empty_value= allow_empty_value;
	123	}
	124
	125	private:
	126	const Binlog_status_enum binlog_status;
	127
	128	bool m_allow_empty_value;
	129	};
	130
	131
	132	/*
	133	A base class for all variables that require its access to
	134	be guarded with a mutex.
	135	*/
	136
	137	class sys_var_global: public sys_var
	138	{
	139	protected:
	140	pthread_mutex_t *guard;
	141	public:
	142	sys_var_global(const char *name_arg, sys_after_update_func after_update_arg,
	143	pthread_mutex_t *guard_arg)
	144	:sys_var(name_arg, after_update_arg), guard(guard_arg) {}
	145	};
	146
	147
	148	/*
622 by Brian Aker More ulong work.	149	A global-only uint64_t variable that requires its access to be
1 by brian clean slate	150	protected with a mutex.
	151	*/
	152
	153	class sys_var_long_ptr_global: public sys_var_global
	154	{
622 by Brian Aker More ulong work.	155	uint64_t *value;
1 by brian clean slate	156	public:
1 by brian clean slate	157	sys_var_long_ptr_global(sys_var_chain chain, const char name_arg,
622 by Brian Aker More ulong work.	158	uint64_t *value_ptr_arg,
1 by brian clean slate	159	pthread_mutex_t *guard_arg,
	160	sys_after_update_func after_update_arg= NULL)
	161	:sys_var_global(name_arg, after_update_arg, guard_arg),
	162	value(value_ptr_arg)
	163	{ chain_sys_var(chain); }
520.1.22 by Brian Aker Second pass of thd cleanup	164	bool check(Session session, set_var var);
	165	bool update(Session session, set_var var);
	166	void set_default(Session *session, enum_var_type type);
1 by brian clean slate	167	SHOW_TYPE show_type() { return SHOW_LONG; }
644 by Brian Aker Clean up warnings for Solaris.	168	unsigned char value_ptr(Session , enum_var_type, LEX_STRING *)
481 by Brian Aker Remove all of uchar.	169	{ return (unsigned char*) value; }
1 by brian clean slate	170	};
	171
	172
	173	/*
622 by Brian Aker More ulong work.	174	A global uint64_t variable that is protected by LOCK_global_system_variables
1 by brian clean slate	175	*/
	176
	177	class sys_var_long_ptr :public sys_var_long_ptr_global
	178	{
	179	public:
622 by Brian Aker More ulong work.	180	sys_var_long_ptr(sys_var_chain chain, const char name_arg, uint64_t *value_ptr,
1 by brian clean slate	181	sys_after_update_func after_update_arg= NULL);
	182	};
	183
	184
520.4.14 by Monty Taylor Removed korr.h and tztime.h from common_includes. Also removed the HAVE_DTRACE block and stuck it in autoconf.	185	class sys_var_uint32_t_ptr :public sys_var
	186	{
	187	uint32_t *value;
	188	public:
	189	sys_var_uint32_t_ptr(sys_var_chain chain, const char name_arg,
	190	uint32_t *value_ptr_arg)
	191	:sys_var(name_arg),value(value_ptr_arg)
	192	{ chain_sys_var(chain); }
	193	sys_var_uint32_t_ptr(sys_var_chain chain, const char name_arg,
	194	uint32_t *value_ptr_arg,
	195	sys_after_update_func func)
	196	:sys_var(name_arg,func), value(value_ptr_arg)
	197	{ chain_sys_var(chain); }
	198	bool update(Session session, set_var var);
	199	void set_default(Session *session, enum_var_type type);
	200	SHOW_TYPE show_type() { return SHOW_LONG; }
644 by Brian Aker Clean up warnings for Solaris.	201	unsigned char value_ptr(Session , enum_var_type, LEX_STRING *)
520.4.14 by Monty Taylor Removed korr.h and tztime.h from common_includes. Also removed the HAVE_DTRACE block and stuck it in autoconf.	202	{ return (unsigned char*) value; }
	203	};
	204
	205
151 by Brian Aker Ulonglong to uint64_t	206	class sys_var_uint64_t_ptr :public sys_var
1 by brian clean slate	207	{
151 by Brian Aker Ulonglong to uint64_t	208	uint64_t *value;
10 by Brian Aker Start of var cleanup (really.... looking at this code the entire thing needs	209	public:
151 by Brian Aker Ulonglong to uint64_t	210	sys_var_uint64_t_ptr(sys_var_chain chain, const char name_arg, uint64_t *value_ptr_arg)
1 by brian clean slate	211	:sys_var(name_arg),value(value_ptr_arg)
1 by brian clean slate	212	{ chain_sys_var(chain); }
151 by Brian Aker Ulonglong to uint64_t	213	sys_var_uint64_t_ptr(sys_var_chain chain, const char name_arg, uint64_t *value_ptr_arg,
1 by brian clean slate	214	sys_after_update_func func)
	215	:sys_var(name_arg,func), value(value_ptr_arg)
	216	{ chain_sys_var(chain); }
520.1.22 by Brian Aker Second pass of thd cleanup	217	bool update(Session session, set_var var);
520.1.22 by Brian Aker Second pass of thd cleanup	218	void set_default(Session *session, enum_var_type type);
1 by brian clean slate	219	SHOW_TYPE show_type() { return SHOW_LONGLONG; }
644 by Brian Aker Clean up warnings for Solaris.	220	unsigned char value_ptr(Session , enum_var_type, LEX_STRING *)
481 by Brian Aker Remove all of uchar.	221	{ return (unsigned char*) value; }
1 by brian clean slate	222	};
1 by brian clean slate	223
629.4.1 by Monty Taylor First step in support size_t sys_var stuff.	224	class sys_var_size_t_ptr :public sys_var
	225	{
	226	size_t *value;
	227	public:
	228	sys_var_size_t_ptr(sys_var_chain chain, const char name_arg, size_t *value_ptr_arg)
	229	:sys_var(name_arg),value(value_ptr_arg)
	230	{ chain_sys_var(chain); }
	231	sys_var_size_t_ptr(sys_var_chain chain, const char name_arg, size_t *value_ptr_arg,
	232	sys_after_update_func func)
	233	:sys_var(name_arg,func), value(value_ptr_arg)
	234	{ chain_sys_var(chain); }
	235	bool update(Session session, set_var var);
	236	void set_default(Session *session, enum_var_type type);
	237	SHOW_TYPE show_type() { return SHOW_SIZE; }
644 by Brian Aker Clean up warnings for Solaris.	238	unsigned char value_ptr(Session , enum_var_type, LEX_STRING *)
629.4.1 by Monty Taylor First step in support size_t sys_var stuff.	239	{ return (unsigned char*) value; }
	240	};
1 by brian clean slate	241
	242	class sys_var_bool_ptr :public sys_var
	243	{
	244	public:
146 by Brian Aker my_bool cleanup.	245	bool *value;
147 by Brian Aker More my_bool conversion. This time the set_var class.	246	sys_var_bool_ptr(sys_var_chain chain, const char name_arg, bool *value_arg)
146 by Brian Aker my_bool cleanup.	247	:sys_var(name_arg),value(value_arg)
146 by Brian Aker my_bool cleanup.	248	{ chain_sys_var(chain); }
520.1.22 by Brian Aker Second pass of thd cleanup	249	bool check(Session session, set_var var)
146 by Brian Aker my_bool cleanup.	250	{
520.1.22 by Brian Aker Second pass of thd cleanup	251	return check_enum(session, var, &bool_typelib);
146 by Brian Aker my_bool cleanup.	252	}
520.1.22 by Brian Aker Second pass of thd cleanup	253	bool update(Session session, set_var var);
520.1.22 by Brian Aker Second pass of thd cleanup	254	void set_default(Session *session, enum_var_type type);
146 by Brian Aker my_bool cleanup.	255	SHOW_TYPE show_type() { return SHOW_MY_BOOL; }
644 by Brian Aker Clean up warnings for Solaris.	256	unsigned char value_ptr(Session , enum_var_type, LEX_STRING *)
481 by Brian Aker Remove all of uchar.	257	{ return (unsigned char*) value; }
644 by Brian Aker Clean up warnings for Solaris.	258	bool check_update_type(Item_result)
146 by Brian Aker my_bool cleanup.	259	{ return 0; }
	260	};
	261
1 by brian clean slate	262	class sys_var_bool_ptr_readonly :public sys_var_bool_ptr
	263	{
	264	public:
	265	sys_var_bool_ptr_readonly(sys_var_chain chain, const char name_arg,
147 by Brian Aker More my_bool conversion. This time the set_var class.	266	bool *value_arg)
1 by brian clean slate	267	:sys_var_bool_ptr(chain, name_arg, value_arg)
	268	{}
	269	bool is_readonly() const { return 1; }
	270	};
	271
	272
	273	class sys_var_str :public sys_var
	274	{
	275	public:
	276	char *value; // Pointer to allocated string
482 by Brian Aker Remove uint.	277	uint32_t value_length;
1 by brian clean slate	278	sys_check_func check_func;
	279	sys_update_func update_func;
	280	sys_set_default_func set_default_func;
	281	sys_var_str(sys_var_chain chain, const char name_arg,
	282	sys_check_func check_func_arg,
	283	sys_update_func update_func_arg,
	284	sys_set_default_func set_default_func_arg,
	285	char *value_arg)
	286	:sys_var(name_arg), value(value_arg), check_func(check_func_arg),
	287	update_func(update_func_arg),set_default_func(set_default_func_arg)
	288	{ chain_sys_var(chain); }
520.1.22 by Brian Aker Second pass of thd cleanup	289	bool check(Session session, set_var var);
520.1.22 by Brian Aker Second pass of thd cleanup	290	bool update(Session session, set_var var)
1 by brian clean slate	291	{
520.1.22 by Brian Aker Second pass of thd cleanup	292	return (*update_func)(session, var);
1 by brian clean slate	293	}
520.1.22 by Brian Aker Second pass of thd cleanup	294	void set_default(Session *session, enum_var_type type)
1 by brian clean slate	295	{
520.1.22 by Brian Aker Second pass of thd cleanup	296	(*set_default_func)(session, type);
1 by brian clean slate	297	}
1 by brian clean slate	298	SHOW_TYPE show_type() { return SHOW_CHAR; }
644 by Brian Aker Clean up warnings for Solaris.	299	unsigned char value_ptr(Session , enum_var_type, LEX_STRING *)
481 by Brian Aker Remove all of uchar.	300	{ return (unsigned char*) value; }
1 by brian clean slate	301	bool check_update_type(Item_result type)
	302	{
	303	return type != STRING_RESULT; /* Only accept strings */
	304	}
644 by Brian Aker Clean up warnings for Solaris.	305	bool check_default(enum_var_type)
77.1.7 by Monty Taylor Heap builds clean.	306	{ return 0; }
1 by brian clean slate	307	};
	308
	309
	310	class sys_var_const_str :public sys_var
	311	{
	312	char *value; // Pointer to const value
10 by Brian Aker Start of var cleanup (really.... looking at this code the entire thing needs	313	public:
1 by brian clean slate	314	sys_var_const_str(sys_var_chain chain, const char name_arg,
	315	const char *value_arg)
	316	:sys_var(name_arg), value((char*) value_arg)
	317	{ chain_sys_var(chain); }
10 by Brian Aker Start of var cleanup (really.... looking at this code the entire thing needs	318	inline void set (char *new_value)
	319	{
	320	value= new_value;
	321	}
644 by Brian Aker Clean up warnings for Solaris.	322	bool check(Session , set_var )
1 by brian clean slate	323	{
	324	return 1;
	325	}
644 by Brian Aker Clean up warnings for Solaris.	326	bool update(Session , set_var )
1 by brian clean slate	327	{
	328	return 1;
	329	}
	330	SHOW_TYPE show_type() { return SHOW_CHAR; }
644 by Brian Aker Clean up warnings for Solaris.	331	unsigned char value_ptr(Session , enum_var_type, LEX_STRING *)
1 by brian clean slate	332	{
481 by Brian Aker Remove all of uchar.	333	return (unsigned char*) value;
1 by brian clean slate	334	}
644 by Brian Aker Clean up warnings for Solaris.	335	bool check_update_type(Item_result)
1 by brian clean slate	336	{
	337	return 1;
	338	}
644 by Brian Aker Clean up warnings for Solaris.	339	bool check_default(enum_var_type)
77.1.7 by Monty Taylor Heap builds clean.	340	{ return 1; }
1 by brian clean slate	341	bool is_readonly() const { return 1; }
	342	};
	343
	344
	345	class sys_var_const_str_ptr :public sys_var
	346	{
	347	char **value; // Pointer to const value
10 by Brian Aker Start of var cleanup (really.... looking at this code the entire thing needs	348	public:
1 by brian clean slate	349	sys_var_const_str_ptr(sys_var_chain chain, const char name_arg, char **value_arg)
	350	:sys_var(name_arg),value(value_arg)
	351	{ chain_sys_var(chain); }
644 by Brian Aker Clean up warnings for Solaris.	352	bool check(Session , set_var )
1 by brian clean slate	353	{
	354	return 1;
	355	}
644 by Brian Aker Clean up warnings for Solaris.	356	bool update(Session , set_var )
1 by brian clean slate	357	{
	358	return 1;
	359	}
	360	SHOW_TYPE show_type() { return SHOW_CHAR; }
644 by Brian Aker Clean up warnings for Solaris.	361	unsigned char value_ptr(Session , enum_var_type, LEX_STRING *)
1 by brian clean slate	362	{
481 by Brian Aker Remove all of uchar.	363	return (unsigned char) value;
1 by brian clean slate	364	}
644 by Brian Aker Clean up warnings for Solaris.	365	bool check_update_type(Item_result)
1 by brian clean slate	366	{
	367	return 1;
	368	}
644 by Brian Aker Clean up warnings for Solaris.	369	bool check_default(enum_var_type)
77.1.7 by Monty Taylor Heap builds clean.	370	{ return 1; }
77.1.7 by Monty Taylor Heap builds clean.	371	bool is_readonly(void) const { return 1; }
1 by brian clean slate	372	};
	373
	374
	375	class sys_var_enum :public sys_var
	376	{
482 by Brian Aker Remove uint.	377	uint32_t *value;
1 by brian clean slate	378	TYPELIB *enum_names;
1 by brian clean slate	379	public:
482 by Brian Aker Remove uint.	380	sys_var_enum(sys_var_chain chain, const char name_arg, uint32_t *value_arg,
1 by brian clean slate	381	TYPELIB *typelib, sys_after_update_func func)
	382	:sys_var(name_arg,func), value(value_arg), enum_names(typelib)
	383	{ chain_sys_var(chain); }
520.1.22 by Brian Aker Second pass of thd cleanup	384	bool check(Session session, set_var var)
1 by brian clean slate	385	{
520.1.22 by Brian Aker Second pass of thd cleanup	386	return check_enum(session, var, enum_names);
1 by brian clean slate	387	}
520.1.22 by Brian Aker Second pass of thd cleanup	388	bool update(Session session, set_var var);
1 by brian clean slate	389	SHOW_TYPE show_type() { return SHOW_CHAR; }
520.1.22 by Brian Aker Second pass of thd cleanup	390	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
644 by Brian Aker Clean up warnings for Solaris.	391	bool check_update_type(Item_result)
77.1.7 by Monty Taylor Heap builds clean.	392	{ return 0; }
1 by brian clean slate	393	};
	394
	395
	396	class sys_var_enum_const :public sys_var
	397	{
621 by Brian Aker ulong fixes	398	uint32_t SV::*offset;
1 by brian clean slate	399	TYPELIB *enum_names;
1 by brian clean slate	400	public:
621 by Brian Aker ulong fixes	401	sys_var_enum_const(sys_var_chain chain, const char name_arg, uint32_t SV::*offset_arg,
1 by brian clean slate	402	TYPELIB *typelib, sys_after_update_func func)
	403	:sys_var(name_arg,func), offset(offset_arg), enum_names(typelib)
	404	{ chain_sys_var(chain); }
644 by Brian Aker Clean up warnings for Solaris.	405	bool check(Session , set_var )
77.1.7 by Monty Taylor Heap builds clean.	406	{ return 1; }
644 by Brian Aker Clean up warnings for Solaris.	407	bool update(Session , set_var )
77.1.7 by Monty Taylor Heap builds clean.	408	{ return 1; }
1 by brian clean slate	409	SHOW_TYPE show_type() { return SHOW_CHAR; }
644 by Brian Aker Clean up warnings for Solaris.	410	bool check_update_type(Item_result)
77.1.7 by Monty Taylor Heap builds clean.	411	{ return 1; }
1 by brian clean slate	412	bool is_readonly() const { return 1; }
520.1.22 by Brian Aker Second pass of thd cleanup	413	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
1 by brian clean slate	414	};
	415
	416
520.1.22 by Brian Aker Second pass of thd cleanup	417	class sys_var_session :public sys_var
1 by brian clean slate	418	{
1 by brian clean slate	419	public:
660.1.3 by Eric Herman removed trailing whitespace with simple script:	420	sys_var_session(const char *name_arg,
1 by brian clean slate	421	sys_after_update_func func= NULL,
	422	Binlog_status_enum binlog_status= NOT_IN_BINLOG)
	423	:sys_var(name_arg, func, binlog_status)
	424	{}
644 by Brian Aker Clean up warnings for Solaris.	425	bool check_type(enum_var_type)
77.1.7 by Monty Taylor Heap builds clean.	426	{ return 0; }
1 by brian clean slate	427	bool check_default(enum_var_type type)
	428	{
	429	return type == OPT_GLOBAL && !option_limits;
	430	}
	431	};
	432
615 by Brian Aker Added 32bit system variable support	433	class sys_var_session_uint32_t :public sys_var_session
	434	{
	435	sys_check_func check_func;
	436	public:
	437	uint32_t SV::*offset;
	438	sys_var_session_uint32_t(sys_var_chain chain, const char name_arg,
	439	uint32_t SV::*offset_arg,
	440	sys_check_func c_func= NULL,
	441	sys_after_update_func au_func= NULL,
	442	Binlog_status_enum binlog_status_arg= NOT_IN_BINLOG)
	443	:sys_var_session(name_arg, au_func, binlog_status_arg), check_func(c_func),
	444	offset(offset_arg)
	445	{ chain_sys_var(chain); }
	446	bool check(Session session, set_var var);
	447	bool update(Session session, set_var var);
	448	void set_default(Session *session, enum_var_type type);
	449	SHOW_TYPE show_type() { return SHOW_LONG; }
	450	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
	451	};
	452
1 by brian clean slate	453
520.1.22 by Brian Aker Second pass of thd cleanup	454	class sys_var_session_ha_rows :public sys_var_session
1 by brian clean slate	455	{
	456	public:
	457	ha_rows SV::*offset;
660.1.3 by Eric Herman removed trailing whitespace with simple script:	458	sys_var_session_ha_rows(sys_var_chain chain, const char name_arg,
1 by brian clean slate	459	ha_rows SV::*offset_arg)
520.1.22 by Brian Aker Second pass of thd cleanup	460	:sys_var_session(name_arg), offset(offset_arg)
1 by brian clean slate	461	{ chain_sys_var(chain); }
660.1.3 by Eric Herman removed trailing whitespace with simple script:	462	sys_var_session_ha_rows(sys_var_chain chain, const char name_arg,
1 by brian clean slate	463	ha_rows SV::*offset_arg,
1 by brian clean slate	464	sys_after_update_func func)
520.1.22 by Brian Aker Second pass of thd cleanup	465	:sys_var_session(name_arg,func), offset(offset_arg)
1 by brian clean slate	466	{ chain_sys_var(chain); }
520.1.22 by Brian Aker Second pass of thd cleanup	467	bool update(Session session, set_var var);
520.1.22 by Brian Aker Second pass of thd cleanup	468	void set_default(Session *session, enum_var_type type);
1 by brian clean slate	469	SHOW_TYPE show_type() { return SHOW_HA_ROWS; }
520.1.22 by Brian Aker Second pass of thd cleanup	470	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
1 by brian clean slate	471	};
	472
	473
520.1.22 by Brian Aker Second pass of thd cleanup	474	class sys_var_session_uint64_t :public sys_var_session
1 by brian clean slate	475	{
555 by Monty Fixed 32-bit issues.	476	sys_check_func check_func;
1 by brian clean slate	477	public:
151 by Brian Aker Ulonglong to uint64_t	478	uint64_t SV::*offset;
1 by brian clean slate	479	bool only_global;
555 by Monty Fixed 32-bit issues.	480	sys_var_session_uint64_t(sys_var_chain chain, const char name_arg,
	481	uint64_t SV::*offset_arg,
	482	sys_after_update_func au_func= NULL,
	483	sys_check_func c_func= NULL,
	484	Binlog_status_enum binlog_status_arg= NOT_IN_BINLOG)
617 by Brian Aker ulong fixes	485	:sys_var_session(name_arg, au_func, binlog_status_arg),
	486	check_func(c_func),
	487	offset(offset_arg)
	488	{ chain_sys_var(chain); }
660.1.3 by Eric Herman removed trailing whitespace with simple script:	489	sys_var_session_uint64_t(sys_var_chain *chain,
	490	const char *name_arg,
	491	uint64_t SV::*offset_arg,
	492	sys_after_update_func func,
617 by Brian Aker ulong fixes	493	bool only_global_arg,
617 by Brian Aker ulong fixes	494	sys_check_func cfunc= NULL)
555 by Monty Fixed 32-bit issues.	495	:sys_var_session(name_arg, func),
	496	check_func(cfunc),
	497	offset(offset_arg),
1 by brian clean slate	498	only_global(only_global_arg)
1 by brian clean slate	499	{ chain_sys_var(chain); }
520.1.22 by Brian Aker Second pass of thd cleanup	500	bool update(Session session, set_var var);
520.1.22 by Brian Aker Second pass of thd cleanup	501	void set_default(Session *session, enum_var_type type);
1 by brian clean slate	502	SHOW_TYPE show_type() { return SHOW_LONGLONG; }
520.1.22 by Brian Aker Second pass of thd cleanup	503	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
520.1.22 by Brian Aker Second pass of thd cleanup	504	bool check(Session session, set_var var);
1 by brian clean slate	505	bool check_default(enum_var_type type)
	506	{
	507	return type == OPT_GLOBAL && !option_limits;
	508	}
	509	bool check_type(enum_var_type type)
	510	{
	511	return (only_global && type != OPT_GLOBAL);
	512	}
	513	};
	514
629.4.1 by Monty Taylor First step in support size_t sys_var stuff.	515	class sys_var_session_size_t :public sys_var_session
	516	{
	517	sys_check_func check_func;
	518	public:
	519	size_t SV::*offset;
	520	bool only_global;
	521	sys_var_session_size_t(sys_var_chain chain, const char name_arg,
	522	size_t SV::*offset_arg,
	523	sys_after_update_func au_func= NULL,
	524	sys_check_func c_func= NULL,
	525	Binlog_status_enum binlog_status_arg= NOT_IN_BINLOG)
	526	:sys_var_session(name_arg, au_func, binlog_status_arg),
	527	check_func(c_func),
	528	offset(offset_arg)
	529	{ chain_sys_var(chain); }
660.1.3 by Eric Herman removed trailing whitespace with simple script:	530	sys_var_session_size_t(sys_var_chain *chain,
	531	const char *name_arg,
	532	size_t SV::*offset_arg,
	533	sys_after_update_func func,
629.4.1 by Monty Taylor First step in support size_t sys_var stuff.	534	bool only_global_arg,
	535	sys_check_func cfunc= NULL)
	536	:sys_var_session(name_arg, func),
	537	check_func(cfunc),
	538	offset(offset_arg),
	539	only_global(only_global_arg)
	540	{ chain_sys_var(chain); }
	541	bool update(Session session, set_var var);
	542	void set_default(Session *session, enum_var_type type);
	543	SHOW_TYPE show_type() { return SHOW_SIZE; }
	544	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
	545	bool check(Session session, set_var var);
	546	bool check_default(enum_var_type type)
	547	{
	548	return type == OPT_GLOBAL && !option_limits;
	549	}
	550	bool check_type(enum_var_type type)
	551	{
	552	return (only_global && type != OPT_GLOBAL);
	553	}
	554	};
	555
1 by brian clean slate	556
520.1.22 by Brian Aker Second pass of thd cleanup	557	class sys_var_session_bool :public sys_var_session
1 by brian clean slate	558	{
1 by brian clean slate	559	public:
200 by Brian Aker my_bool from handler and set_var	560	bool SV::*offset;
520.1.22 by Brian Aker Second pass of thd cleanup	561	sys_var_session_bool(sys_var_chain chain, const char name_arg, bool SV::*offset_arg)
520.1.22 by Brian Aker Second pass of thd cleanup	562	:sys_var_session(name_arg), offset(offset_arg)
1 by brian clean slate	563	{ chain_sys_var(chain); }
520.1.22 by Brian Aker Second pass of thd cleanup	564	sys_var_session_bool(sys_var_chain chain, const char name_arg, bool SV::*offset_arg,
1 by brian clean slate	565	sys_after_update_func func)
520.1.22 by Brian Aker Second pass of thd cleanup	566	:sys_var_session(name_arg,func), offset(offset_arg)
1 by brian clean slate	567	{ chain_sys_var(chain); }
520.1.22 by Brian Aker Second pass of thd cleanup	568	bool update(Session session, set_var var);
520.1.22 by Brian Aker Second pass of thd cleanup	569	void set_default(Session *session, enum_var_type type);
1 by brian clean slate	570	SHOW_TYPE show_type() { return SHOW_MY_BOOL; }
520.1.22 by Brian Aker Second pass of thd cleanup	571	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
520.1.22 by Brian Aker Second pass of thd cleanup	572	bool check(Session session, set_var var)
1 by brian clean slate	573	{
520.1.22 by Brian Aker Second pass of thd cleanup	574	return check_enum(session, var, &bool_typelib);
1 by brian clean slate	575	}
644 by Brian Aker Clean up warnings for Solaris.	576	bool check_update_type(Item_result)
77.1.7 by Monty Taylor Heap builds clean.	577	{ return 0; }
1 by brian clean slate	578	};
	579
	580
520.1.22 by Brian Aker Second pass of thd cleanup	581	class sys_var_session_enum :public sys_var_session
1 by brian clean slate	582	{
1 by brian clean slate	583	protected:
617 by Brian Aker ulong fixes	584	uint32_t SV::*offset;
1 by brian clean slate	585	TYPELIB *enum_names;
	586	sys_check_func check_func;
	587	public:
520.1.22 by Brian Aker Second pass of thd cleanup	588	sys_var_session_enum(sys_var_chain chain, const char name_arg,
617 by Brian Aker ulong fixes	589	uint32_t SV::offset_arg, TYPELIB typelib,
1 by brian clean slate	590	sys_after_update_func func= NULL,
1 by brian clean slate	591	sys_check_func check= NULL)
520.1.22 by Brian Aker Second pass of thd cleanup	592	:sys_var_session(name_arg, func), offset(offset_arg),
1 by brian clean slate	593	enum_names(typelib), check_func(check)
1 by brian clean slate	594	{ chain_sys_var(chain); }
520.1.22 by Brian Aker Second pass of thd cleanup	595	bool check(Session session, set_var var)
1 by brian clean slate	596	{
	597	int ret= 0;
	598	if (check_func)
520.1.22 by Brian Aker Second pass of thd cleanup	599	ret= (*check_func)(session, var);
520.1.22 by Brian Aker Second pass of thd cleanup	600	return ret ? ret : check_enum(session, var, enum_names);
1 by brian clean slate	601	}
520.1.22 by Brian Aker Second pass of thd cleanup	602	bool update(Session session, set_var var);
520.1.22 by Brian Aker Second pass of thd cleanup	603	void set_default(Session *session, enum_var_type type);
1 by brian clean slate	604	SHOW_TYPE show_type() { return SHOW_CHAR; }
520.1.22 by Brian Aker Second pass of thd cleanup	605	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
644 by Brian Aker Clean up warnings for Solaris.	606	bool check_update_type(Item_result)
77.1.7 by Monty Taylor Heap builds clean.	607	{ return 0; }
1 by brian clean slate	608	};
	609
	610
	611
520.1.22 by Brian Aker Second pass of thd cleanup	612	class sys_var_session_optimizer_switch :public sys_var_session_enum
1 by brian clean slate	613	{
1 by brian clean slate	614	public:
660.1.3 by Eric Herman removed trailing whitespace with simple script:	615	sys_var_session_optimizer_switch(sys_var_chain chain, const char name_arg,
617 by Brian Aker ulong fixes	616	uint32_t SV::*offset_arg)
520.1.22 by Brian Aker Second pass of thd cleanup	617	:sys_var_session_enum(chain, name_arg, offset_arg, &optimizer_switch_typelib)
1 by brian clean slate	618	{}
520.1.22 by Brian Aker Second pass of thd cleanup	619	bool check(Session session, set_var var)
1 by brian clean slate	620	{
520.1.22 by Brian Aker Second pass of thd cleanup	621	return check_set(session, var, enum_names);
1 by brian clean slate	622	}
520.1.22 by Brian Aker Second pass of thd cleanup	623	void set_default(Session *session, enum_var_type type);
520.1.22 by Brian Aker Second pass of thd cleanup	624	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
617 by Brian Aker ulong fixes	625	static bool symbolic_mode_representation(Session *session, uint32_t sql_mode,
1 by brian clean slate	626	LEX_STRING *rep);
	627	};
	628
	629
520.1.22 by Brian Aker Second pass of thd cleanup	630	class sys_var_session_storage_engine :public sys_var_session
1 by brian clean slate	631	{
	632	protected:
	633	plugin_ref SV::*offset;
	634	public:
660.1.3 by Eric Herman removed trailing whitespace with simple script:	635	sys_var_session_storage_engine(sys_var_chain chain, const char name_arg,
1 by brian clean slate	636	plugin_ref SV::*offset_arg)
520.1.22 by Brian Aker Second pass of thd cleanup	637	:sys_var_session(name_arg), offset(offset_arg)
1 by brian clean slate	638	{ chain_sys_var(chain); }
520.1.22 by Brian Aker Second pass of thd cleanup	639	bool check(Session session, set_var var);
1 by brian clean slate	640	SHOW_TYPE show_type() { return SHOW_CHAR; }
	641	bool check_update_type(Item_result type)
	642	{
	643	return type != STRING_RESULT; /* Only accept strings */
	644	}
520.1.22 by Brian Aker Second pass of thd cleanup	645	void set_default(Session *session, enum_var_type type);
	646	bool update(Session session, set_var var);
	647	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
1 by brian clean slate	648	};
1 by brian clean slate	649
520.1.22 by Brian Aker Second pass of thd cleanup	650	class sys_var_session_bit :public sys_var_session
1 by brian clean slate	651	{
	652	sys_check_func check_func;
	653	sys_update_func update_func;
	654	public:
151 by Brian Aker Ulonglong to uint64_t	655	uint64_t bit_flag;
1 by brian clean slate	656	bool reverse;
520.1.22 by Brian Aker Second pass of thd cleanup	657	sys_var_session_bit(sys_var_chain chain, const char name_arg,
1 by brian clean slate	658	sys_check_func c_func, sys_update_func u_func,
151 by Brian Aker Ulonglong to uint64_t	659	uint64_t bit, bool reverse_arg=0,
1 by brian clean slate	660	Binlog_status_enum binlog_status_arg= NOT_IN_BINLOG)
520.1.22 by Brian Aker Second pass of thd cleanup	661	:sys_var_session(name_arg, NULL, binlog_status_arg), check_func(c_func),
1 by brian clean slate	662	update_func(u_func), bit_flag(bit), reverse(reverse_arg)
1 by brian clean slate	663	{ chain_sys_var(chain); }
520.1.22 by Brian Aker Second pass of thd cleanup	664	bool check(Session session, set_var var);
520.1.22 by Brian Aker Second pass of thd cleanup	665	bool update(Session session, set_var var);
644 by Brian Aker Clean up warnings for Solaris.	666	bool check_update_type(Item_result)
77.1.7 by Monty Taylor Heap builds clean.	667	{ return 0; }
1 by brian clean slate	668	bool check_type(enum_var_type type) { return type == OPT_GLOBAL; }
1 by brian clean slate	669	SHOW_TYPE show_type() { return SHOW_MY_BOOL; }
520.1.22 by Brian Aker Second pass of thd cleanup	670	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
1 by brian clean slate	671	};
	672
	673	/* some variables that require special handling */
	674
	675	class sys_var_timestamp :public sys_var
	676	{
	677	public:
	678	sys_var_timestamp(sys_var_chain chain, const char name_arg,
	679	Binlog_status_enum binlog_status_arg= NOT_IN_BINLOG)
	680	:sys_var(name_arg, NULL, binlog_status_arg)
	681	{ chain_sys_var(chain); }
520.1.22 by Brian Aker Second pass of thd cleanup	682	bool update(Session session, set_var var);
520.1.22 by Brian Aker Second pass of thd cleanup	683	void set_default(Session *session, enum_var_type type);
1 by brian clean slate	684	bool check_type(enum_var_type type) { return type == OPT_GLOBAL; }
644 by Brian Aker Clean up warnings for Solaris.	685	bool check_default(enum_var_type)
77.1.7 by Monty Taylor Heap builds clean.	686	{ return 0; }
77.1.7 by Monty Taylor Heap builds clean.	687	SHOW_TYPE show_type(void) { return SHOW_LONG; }
520.1.22 by Brian Aker Second pass of thd cleanup	688	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
1 by brian clean slate	689	};
	690
	691
	692	class sys_var_last_insert_id :public sys_var
	693	{
	694	public:
	695	sys_var_last_insert_id(sys_var_chain chain, const char name_arg,
	696	Binlog_status_enum binlog_status_arg= NOT_IN_BINLOG)
	697	:sys_var(name_arg, NULL, binlog_status_arg)
	698	{ chain_sys_var(chain); }
520.1.22 by Brian Aker Second pass of thd cleanup	699	bool update(Session session, set_var var);
1 by brian clean slate	700	bool check_type(enum_var_type type) { return type == OPT_GLOBAL; }
1 by brian clean slate	701	SHOW_TYPE show_type() { return SHOW_LONGLONG; }
520.1.22 by Brian Aker Second pass of thd cleanup	702	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
1 by brian clean slate	703	};
	704
	705
	706	class sys_var_insert_id :public sys_var
	707	{
	708	public:
	709	sys_var_insert_id(sys_var_chain chain, const char name_arg)
	710	:sys_var(name_arg)
	711	{ chain_sys_var(chain); }
520.1.22 by Brian Aker Second pass of thd cleanup	712	bool update(Session session, set_var var);
1 by brian clean slate	713	bool check_type(enum_var_type type) { return type == OPT_GLOBAL; }
1 by brian clean slate	714	SHOW_TYPE show_type() { return SHOW_LONGLONG; }
520.1.22 by Brian Aker Second pass of thd cleanup	715	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
1 by brian clean slate	716	};
	717
	718
520.1.22 by Brian Aker Second pass of thd cleanup	719	class sys_var_collation :public sys_var_session
1 by brian clean slate	720	{
	721	public:
	722	sys_var_collation(const char *name_arg,
	723	Binlog_status_enum binlog_status_arg= NOT_IN_BINLOG)
520.1.22 by Brian Aker Second pass of thd cleanup	724	:sys_var_session(name_arg, NULL, binlog_status_arg)
1 by brian clean slate	725	{
	726	no_support_one_shot= 0;
	727	}
520.1.22 by Brian Aker Second pass of thd cleanup	728	bool check(Session session, set_var var);
1 by brian clean slate	729	SHOW_TYPE show_type() { return SHOW_CHAR; }
	730	bool check_update_type(Item_result type)
	731	{
	732	return ((type != STRING_RESULT) && (type != INT_RESULT));
	733	}
644 by Brian Aker Clean up warnings for Solaris.	734	bool check_default(enum_var_type) { return 0; }
520.1.22 by Brian Aker Second pass of thd cleanup	735	virtual void set_default(Session *session, enum_var_type type)= 0;
1 by brian clean slate	736	};
1 by brian clean slate	737
520.1.22 by Brian Aker Second pass of thd cleanup	738	class sys_var_character_set :public sys_var_session
1 by brian clean slate	739	{
	740	public:
	741	bool nullable;
	742	sys_var_character_set(const char *name_arg, bool is_nullable= 0,
	743	Binlog_status_enum binlog_status_arg= NOT_IN_BINLOG)
520.1.22 by Brian Aker Second pass of thd cleanup	744	:sys_var_session(name_arg, NULL, binlog_status_arg), nullable(is_nullable)
1 by brian clean slate	745	{
	746	/*
	747	In fact only almost all variables derived from sys_var_character_set
	748	support ONE_SHOT; character_set_results doesn't. But that's good enough.
	749	*/
	750	no_support_one_shot= 0;
	751	}
520.1.22 by Brian Aker Second pass of thd cleanup	752	bool check(Session session, set_var var);
1 by brian clean slate	753	SHOW_TYPE show_type() { return SHOW_CHAR; }
	754	bool check_update_type(Item_result type)
	755	{
	756	return ((type != STRING_RESULT) && (type != INT_RESULT));
	757	}
644 by Brian Aker Clean up warnings for Solaris.	758	bool check_default(enum_var_type)
77.1.7 by Monty Taylor Heap builds clean.	759	{ return 0; }
520.1.22 by Brian Aker Second pass of thd cleanup	760	bool update(Session session, set_var var);
	761	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
	762	virtual void set_default(Session *session, enum_var_type type)= 0;
	763	virtual const CHARSET_INFO *ci_ptr(Session session, enum_var_type type)= 0;
1 by brian clean slate	764	};
	765
	766	class sys_var_collation_sv :public sys_var_collation
	767	{
264.2.6 by Andrey Hristov Constify the usage of CHARSET_INFO almost to the last place in the code.	768	const CHARSET_INFO SV::offset;
	769	const CHARSET_INFO **global_default;
1 by brian clean slate	770	public:
1 by brian clean slate	771	sys_var_collation_sv(sys_var_chain chain, const char name_arg,
264.2.6 by Andrey Hristov Constify the usage of CHARSET_INFO almost to the last place in the code.	772	const CHARSET_INFO SV::offset_arg,
	773	const CHARSET_INFO **global_default_arg,
1 by brian clean slate	774	Binlog_status_enum binlog_status_arg= NOT_IN_BINLOG)
	775	:sys_var_collation(name_arg, binlog_status_arg),
	776	offset(offset_arg), global_default(global_default_arg)
	777	{
	778	chain_sys_var(chain);
	779	}
520.1.22 by Brian Aker Second pass of thd cleanup	780	bool update(Session session, set_var var);
	781	void set_default(Session *session, enum_var_type type);
	782	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
1 by brian clean slate	783	};
	784
	785
	786	class sys_var_key_cache_param :public sys_var
	787	{
	788	protected:
	789	size_t offset;
	790	public:
660.1.3 by Eric Herman removed trailing whitespace with simple script:	791	sys_var_key_cache_param(sys_var_chain chain, const char name_arg,
1 by brian clean slate	792	size_t offset_arg)
	793	:sys_var(name_arg), offset(offset_arg)
	794	{ chain_sys_var(chain); }
520.1.22 by Brian Aker Second pass of thd cleanup	795	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
644 by Brian Aker Clean up warnings for Solaris.	796	bool check_default(enum_var_type)
77.1.7 by Monty Taylor Heap builds clean.	797	{ return 1; }
1 by brian clean slate	798	bool is_struct() { return 1; }
	799	};
	800
	801
	802	class sys_var_key_buffer_size :public sys_var_key_cache_param
	803	{
	804	public:
	805	sys_var_key_buffer_size(sys_var_chain chain, const char name_arg)
	806	:sys_var_key_cache_param(chain, name_arg,
	807	offsetof(KEY_CACHE, param_buff_size))
	808	{}
520.1.22 by Brian Aker Second pass of thd cleanup	809	bool update(Session session, set_var var);
1 by brian clean slate	810	SHOW_TYPE show_type() { return SHOW_LONGLONG; }
	811	};
	812
	813
	814	class sys_var_key_cache_long :public sys_var_key_cache_param
	815	{
	816	public:
	817	sys_var_key_cache_long(sys_var_chain chain, const char name_arg, size_t offset_arg)
	818	:sys_var_key_cache_param(chain, name_arg, offset_arg)
	819	{}
520.1.22 by Brian Aker Second pass of thd cleanup	820	bool update(Session session, set_var var);
1 by brian clean slate	821	SHOW_TYPE show_type() { return SHOW_LONG; }
	822	};
	823
	824
520.1.22 by Brian Aker Second pass of thd cleanup	825	class sys_var_session_date_time_format :public sys_var_session
1 by brian clean slate	826	{
1 by brian clean slate	827	DATE_TIME_FORMAT SV::offset;
398.1.1 by Monty Taylor Remove typedef enum enum_drizzle_timestamp_type timestamp_type;	828	enum enum_drizzle_timestamp_type date_time_type;
1 by brian clean slate	829	public:
520.1.22 by Brian Aker Second pass of thd cleanup	830	sys_var_session_date_time_format(sys_var_chain chain, const char name_arg,
1 by brian clean slate	831	DATE_TIME_FORMAT SV::offset_arg,
398.1.1 by Monty Taylor Remove typedef enum enum_drizzle_timestamp_type timestamp_type;	832	enum enum_drizzle_timestamp_type date_time_type_arg)
520.1.22 by Brian Aker Second pass of thd cleanup	833	:sys_var_session(name_arg), offset(offset_arg),
1 by brian clean slate	834	date_time_type(date_time_type_arg)
	835	{ chain_sys_var(chain); }
	836	SHOW_TYPE show_type() { return SHOW_CHAR; }
	837	bool check_update_type(Item_result type)
	838	{
	839	return type != STRING_RESULT; /* Only accept strings */
	840	}
644 by Brian Aker Clean up warnings for Solaris.	841	bool check_default(enum_var_type)
77.1.7 by Monty Taylor Heap builds clean.	842	{ return 0; }
520.1.22 by Brian Aker Second pass of thd cleanup	843	bool check(Session session, set_var var);
	844	bool update(Session session, set_var var);
	845	void update2(Session session, enum_var_type type, DATE_TIME_FORMAT new_value);
	846	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
	847	void set_default(Session *session, enum_var_type type);
1 by brian clean slate	848	};
	849
	850
	851	class sys_var_log_state :public sys_var_bool_ptr
	852	{
482 by Brian Aker Remove uint.	853	uint32_t log_type;
1 by brian clean slate	854	public:
660.1.3 by Eric Herman removed trailing whitespace with simple script:	855	sys_var_log_state(sys_var_chain chain, const char name_arg, bool *value_arg,
482 by Brian Aker Remove uint.	856	uint32_t log_type_arg)
1 by brian clean slate	857	:sys_var_bool_ptr(chain, name_arg, value_arg), log_type(log_type_arg) {}
520.1.22 by Brian Aker Second pass of thd cleanup	858	bool update(Session session, set_var var);
520.1.22 by Brian Aker Second pass of thd cleanup	859	void set_default(Session *session, enum_var_type type);
1 by brian clean slate	860	};
	861
	862	/* Variable that you can only read from */
	863
	864	class sys_var_readonly: public sys_var
	865	{
	866	public:
	867	enum_var_type var_type;
	868	SHOW_TYPE show_type_value;
	869	sys_value_ptr_func value_ptr_func;
	870	sys_var_readonly(sys_var_chain chain, const char name_arg, enum_var_type type,
	871	SHOW_TYPE show_type_arg,
	872	sys_value_ptr_func value_ptr_func_arg)
660.1.3 by Eric Herman removed trailing whitespace with simple script:	873	:sys_var(name_arg), var_type(type),
1 by brian clean slate	874	show_type_value(show_type_arg), value_ptr_func(value_ptr_func_arg)
1 by brian clean slate	875	{ chain_sys_var(chain); }
644 by Brian Aker Clean up warnings for Solaris.	876	bool update(Session , set_var )
77.1.7 by Monty Taylor Heap builds clean.	877	{ return 1; }
644 by Brian Aker Clean up warnings for Solaris.	878	bool check_default(enum_var_type)
77.1.7 by Monty Taylor Heap builds clean.	879	{ return 1; }
1 by brian clean slate	880	bool check_type(enum_var_type type) { return type != var_type; }
644 by Brian Aker Clean up warnings for Solaris.	881	bool check_update_type(Item_result)
77.1.7 by Monty Taylor Heap builds clean.	882	{ return 1; }
644 by Brian Aker Clean up warnings for Solaris.	883	unsigned char value_ptr(Session session, enum_var_type, LEX_STRING *)
1 by brian clean slate	884	{
520.1.22 by Brian Aker Second pass of thd cleanup	885	return (*value_ptr_func)(session);
1 by brian clean slate	886	}
77.1.7 by Monty Taylor Heap builds clean.	887	SHOW_TYPE show_type(void) { return show_type_value; }
77.1.7 by Monty Taylor Heap builds clean.	888	bool is_readonly(void) const { return 1; }
1 by brian clean slate	889	};
	890
	891
	892	class sys_var_have_option: public sys_var
	893	{
	894	protected:
	895	virtual SHOW_COMP_OPTION get_option() = 0;
	896	public:
	897	sys_var_have_option(sys_var_chain chain, const char variable_name):
	898	sys_var(variable_name)
	899	{ chain_sys_var(chain); }
644 by Brian Aker Clean up warnings for Solaris.	900	unsigned char value_ptr(Session , enum_var_type, LEX_STRING *)
1 by brian clean slate	901	{
481 by Brian Aker Remove all of uchar.	902	return (unsigned char*) show_comp_option_name[get_option()];
1 by brian clean slate	903	}
644 by Brian Aker Clean up warnings for Solaris.	904	bool update(Session , set_var ) { return 1; }
644 by Brian Aker Clean up warnings for Solaris.	905	bool check_default(enum_var_type)
77.1.7 by Monty Taylor Heap builds clean.	906	{ return 1; }
1 by brian clean slate	907	bool check_type(enum_var_type type) { return type != OPT_GLOBAL; }
644 by Brian Aker Clean up warnings for Solaris.	908	bool check_update_type(Item_result)
77.1.7 by Monty Taylor Heap builds clean.	909	{ return 1; }
1 by brian clean slate	910	SHOW_TYPE show_type() { return SHOW_CHAR; }
	911	bool is_readonly() const { return 1; }
	912	};
	913
	914
	915	class sys_var_have_variable: public sys_var_have_option
	916	{
	917	SHOW_COMP_OPTION *have_variable;
	918
	919	public:
	920	sys_var_have_variable(sys_var_chain chain, const char variable_name,
	921	SHOW_COMP_OPTION *have_variable_arg):
	922	sys_var_have_option(chain, variable_name),
	923	have_variable(have_variable_arg)
	924	{ }
	925	SHOW_COMP_OPTION get_option() { return *have_variable; }
	926	};
	927
	928
	929	class sys_var_have_plugin: public sys_var_have_option
	930	{
	931	const char *plugin_name_str;
482 by Brian Aker Remove uint.	932	const uint32_t plugin_name_len;
1 by brian clean slate	933	const int plugin_type;
	934
	935	public:
	936	sys_var_have_plugin(sys_var_chain chain, const char variable_name,
660.1.3 by Eric Herman removed trailing whitespace with simple script:	937	const char *plugin_name_str_arg, uint32_t plugin_name_len_arg,
1 by brian clean slate	938	int plugin_type_arg):
660.1.3 by Eric Herman removed trailing whitespace with simple script:	939	sys_var_have_option(chain, variable_name),
1 by brian clean slate	940	plugin_name_str(plugin_name_str_arg), plugin_name_len(plugin_name_len_arg),
	941	plugin_type(plugin_type_arg)
	942	{ }
	943	/* the following method is declared in sql_plugin.cc */
	944	SHOW_COMP_OPTION get_option();
	945	};
	946
	947
520.1.22 by Brian Aker Second pass of thd cleanup	948	class sys_var_session_time_zone :public sys_var_session
1 by brian clean slate	949	{
1 by brian clean slate	950	public:
520.1.22 by Brian Aker Second pass of thd cleanup	951	sys_var_session_time_zone(sys_var_chain chain, const char name_arg,
1 by brian clean slate	952	Binlog_status_enum binlog_status_arg= NOT_IN_BINLOG)
520.1.22 by Brian Aker Second pass of thd cleanup	953	:sys_var_session(name_arg, NULL, binlog_status_arg)
1 by brian clean slate	954	{
	955	no_support_one_shot= 0;
	956	chain_sys_var(chain);
	957	}
520.1.22 by Brian Aker Second pass of thd cleanup	958	bool check(Session session, set_var var);
1 by brian clean slate	959	SHOW_TYPE show_type() { return SHOW_CHAR; }
	960	bool check_update_type(Item_result type)
	961	{
	962	return type != STRING_RESULT; /* Only accept strings */
	963	}
644 by Brian Aker Clean up warnings for Solaris.	964	bool check_default(enum_var_type)
77.1.7 by Monty Taylor Heap builds clean.	965	{ return 0; }
520.1.22 by Brian Aker Second pass of thd cleanup	966	bool update(Session session, set_var var);
	967	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
	968	virtual void set_default(Session *session, enum_var_type type);
1 by brian clean slate	969	};
	970
	971
520.1.22 by Brian Aker Second pass of thd cleanup	972	class sys_var_microseconds :public sys_var_session
1 by brian clean slate	973	{
151 by Brian Aker Ulonglong to uint64_t	974	uint64_t SV::*offset;
1 by brian clean slate	975	public:
1 by brian clean slate	976	sys_var_microseconds(sys_var_chain chain, const char name_arg,
151 by Brian Aker Ulonglong to uint64_t	977	uint64_t SV::*offset_arg):
520.1.22 by Brian Aker Second pass of thd cleanup	978	sys_var_session(name_arg), offset(offset_arg)
1 by brian clean slate	979	{ chain_sys_var(chain); }
644 by Brian Aker Clean up warnings for Solaris.	980	bool check(Session , set_var ) {return 0;}
520.1.22 by Brian Aker Second pass of thd cleanup	981	bool update(Session session, set_var var);
520.1.22 by Brian Aker Second pass of thd cleanup	982	void set_default(Session *session, enum_var_type type);
1 by brian clean slate	983	SHOW_TYPE show_type() { return SHOW_DOUBLE; }
	984	bool check_update_type(Item_result type)
	985	{
	986	return (type != INT_RESULT && type != REAL_RESULT && type != DECIMAL_RESULT);
	987	}
520.1.22 by Brian Aker Second pass of thd cleanup	988	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
1 by brian clean slate	989	};
	990
	991	/**
	992	Handler for setting the system variable --read-only.
	993	*/
	994
	995	class sys_var_opt_readonly :public sys_var_bool_ptr
	996	{
	997	public:
660.1.3 by Eric Herman removed trailing whitespace with simple script:	998	sys_var_opt_readonly(sys_var_chain chain, const char name_arg,
147 by Brian Aker More my_bool conversion. This time the set_var class.	999	bool *value_arg) :
1 by brian clean slate	1000	sys_var_bool_ptr(chain, name_arg, value_arg) {};
1 by brian clean slate	1001	~sys_var_opt_readonly() {};
520.1.22 by Brian Aker Second pass of thd cleanup	1002	bool update(Session session, set_var var);
1 by brian clean slate	1003	};
	1004
	1005
520.1.22 by Brian Aker Second pass of thd cleanup	1006	class sys_var_session_lc_time_names :public sys_var_session
1 by brian clean slate	1007	{
1 by brian clean slate	1008	public:
520.1.22 by Brian Aker Second pass of thd cleanup	1009	sys_var_session_lc_time_names(sys_var_chain chain, const char name_arg,
1 by brian clean slate	1010	Binlog_status_enum binlog_status_arg= NOT_IN_BINLOG)
520.1.22 by Brian Aker Second pass of thd cleanup	1011	: sys_var_session(name_arg, NULL, binlog_status_arg)
1 by brian clean slate	1012	{
	1013	chain_sys_var(chain);
	1014	}
520.1.22 by Brian Aker Second pass of thd cleanup	1015	bool check(Session session, set_var var);
1 by brian clean slate	1016	SHOW_TYPE show_type() { return SHOW_CHAR; }
	1017	bool check_update_type(Item_result type)
	1018	{
	1019	return ((type != STRING_RESULT) && (type != INT_RESULT));
	1020	}
644 by Brian Aker Clean up warnings for Solaris.	1021	bool check_default(enum_var_type)
77.1.7 by Monty Taylor Heap builds clean.	1022	{ return 0; }
520.1.22 by Brian Aker Second pass of thd cleanup	1023	bool update(Session session, set_var var);
	1024	unsigned char value_ptr(Session session, enum_var_type type, LEX_STRING *base);
	1025	virtual void set_default(Session *session, enum_var_type type);
1 by brian clean slate	1026	};
	1027
	1028
	1029	/****************************************************************************
	1030	Classes for parsing of the SET command
	1031	****************************************************************************/
	1032
	1033	class set_var_base :public Sql_alloc
	1034	{
	1035	public:
	1036	set_var_base() {}
	1037	virtual ~set_var_base() {}
520.1.22 by Brian Aker Second pass of thd cleanup	1038	virtual int check(Session session)=0; / To check privileges etc. */
520.1.22 by Brian Aker Second pass of thd cleanup	1039	virtual int update(Session session)=0; / To set the value */
1 by brian clean slate	1040	/* light check for PS */
	1041	virtual bool no_support_one_shot() { return 1; }
	1042	};
	1043
	1044
141 by Brian Aker Code cleanup. Mainly dead stuff :)	1045	/* MySQL internal variables */
1 by brian clean slate	1046
	1047	class set_var :public set_var_base
	1048	{
	1049	public:
	1050	sys_var *var;
	1051	Item *value;
	1052	enum_var_type type;
	1053	union
	1054	{
264.2.6 by Andrey Hristov Constify the usage of CHARSET_INFO almost to the last place in the code.	1055	const CHARSET_INFO *charset;
520.4.14 by Monty Taylor Removed korr.h and tztime.h from common_includes. Also removed the HAVE_DTRACE block and stuck it in autoconf.	1056	uint32_t uint32_t_value;
151 by Brian Aker Ulonglong to uint64_t	1057	uint64_t uint64_t_value;
629.4.1 by Monty Taylor First step in support size_t sys_var stuff.	1058	size_t size_t_value;
1 by brian clean slate	1059	plugin_ref plugin;
	1060	DATE_TIME_FORMAT *date_time_format;
	1061	Time_zone *time_zone;
	1062	MY_LOCALE *locale_value;
	1063	} save_result;
	1064	LEX_STRING base; /* for structs */
	1065
	1066	set_var(enum_var_type type_arg, sys_var *var_arg,
	1067	const LEX_STRING base_name_arg, Item value_arg)
	1068	:var(var_arg), type(type_arg), base(*base_name_arg)
	1069	{
	1070	/*
	1071	If the set value is a field, change it to a string to allow things like
	1072	SET table_type=MYISAM;
	1073	*/
	1074	if (value_arg && value_arg->type() == Item::FIELD_ITEM)
	1075	{
	1076	Item_field item= (Item_field) value_arg;
660.1.3 by Eric Herman removed trailing whitespace with simple script:	1077	if (!(value=new Item_string(item->field_name,
1 by brian clean slate	1078	(uint) strlen(item->field_name),
	1079	item->collation.collation)))
	1080	value=value_arg; /* Give error message later */
	1081	}
	1082	else
	1083	value=value_arg;
	1084	}
520.1.22 by Brian Aker Second pass of thd cleanup	1085	int check(Session *session);
520.1.22 by Brian Aker Second pass of thd cleanup	1086	int update(Session *session);
1 by brian clean slate	1087	bool no_support_one_shot() { return var->no_support_one_shot; }
	1088	};
	1089
	1090
	1091	/* User variables like @my_own_variable */
	1092
	1093	class set_var_user: public set_var_base
	1094	{
	1095	Item_func_set_user_var *user_var_item;
	1096	public:
	1097	set_var_user(Item_func_set_user_var *item)
	1098	:user_var_item(item)
	1099	{}
520.1.22 by Brian Aker Second pass of thd cleanup	1100	int check(Session *session);
520.1.22 by Brian Aker Second pass of thd cleanup	1101	int update(Session *session);
1 by brian clean slate	1102	};
	1103
	1104	/* For SET NAMES and SET CHARACTER SET */
	1105
	1106	class set_var_collation_client: public set_var_base
	1107	{
264.2.6 by Andrey Hristov Constify the usage of CHARSET_INFO almost to the last place in the code.	1108	const CHARSET_INFO *character_set_client;
	1109	const CHARSET_INFO *character_set_results;
	1110	const CHARSET_INFO *collation_connection;
1 by brian clean slate	1111	public:
264.2.6 by Andrey Hristov Constify the usage of CHARSET_INFO almost to the last place in the code.	1112	set_var_collation_client(const CHARSET_INFO * const client_coll_arg,
	1113	const CHARSET_INFO * const connection_coll_arg,
	1114	const CHARSET_INFO * const result_coll_arg)
1 by brian clean slate	1115	:character_set_client(client_coll_arg),
	1116	character_set_results(result_coll_arg),
	1117	collation_connection(connection_coll_arg)
	1118	{}
520.1.22 by Brian Aker Second pass of thd cleanup	1119	int check(Session *session);
520.1.22 by Brian Aker Second pass of thd cleanup	1120	int update(Session *session);
1 by brian clean slate	1121	};
	1122
	1123
	1124	extern "C"
	1125	{
	1126	typedef int (process_key_cache_t) (const char , KEY_CACHE *);
	1127	}
	1128
	1129	/* Named lists (used for keycaches) */
	1130
	1131	class NAMED_LIST :public ilink
	1132	{
656.1.34 by Monty Taylor Got closer...	1133	std::string name;
1 by brian clean slate	1134	public:
481 by Brian Aker Remove all of uchar.	1135	unsigned char* data;
1 by brian clean slate	1136
1 by brian clean slate	1137	NAMED_LIST(I_List<NAMED_LIST> links, const char name_arg,
656.1.34 by Monty Taylor Got closer...	1138	uint32_t name_length_arg, unsigned char* data_arg);
656.1.34 by Monty Taylor Got closer...	1139	bool cmp(const char *name_cmp, uint32_t length);
1 by brian clean slate	1140	friend bool process_key_caches(process_key_cache_t func);
1 by brian clean slate	1141	friend void delete_elements(I_List<NAMED_LIST> *list,
656.1.34 by Monty Taylor Got closer...	1142	void (free_element)(const char,
656.1.34 by Monty Taylor Got closer...	1143	unsigned char*));
1 by brian clean slate	1144	};
	1145
	1146	/* updated in sql_acl.cc */
	1147
520.1.22 by Brian Aker Second pass of thd cleanup	1148	extern sys_var_session_bool sys_old_alter_table;
1 by brian clean slate	1149	extern LEX_STRING default_key_cache_base;
	1150
	1151	/* For sql_yacc */
	1152	struct sys_var_with_base
	1153	{
	1154	sys_var *var;
	1155	LEX_STRING base_name;
	1156	};
	1157
	1158	/*
	1159	Prototypes for helper functions
	1160	*/
	1161
	1162	int set_var_init();
	1163	void set_var_free();
482 by Brian Aker Remove uint.	1164	int mysql_append_static_vars(const SHOW_VAR *show_vars, uint32_t count);
520.1.22 by Brian Aker Second pass of thd cleanup	1165	SHOW_VAR* enumerate_sys_vars(Session *session, bool sorted);
1 by brian clean slate	1166	int mysql_add_sys_var_chain(sys_var chain, struct my_option long_options);
1 by brian clean slate	1167	int mysql_del_sys_var_chain(sys_var *chain);
520.1.22 by Brian Aker Second pass of thd cleanup	1168	sys_var find_sys_var(Session session, const char *str, uint32_t length=0);
520.1.22 by Brian Aker Second pass of thd cleanup	1169	int sql_set_variables(Session session, List<set_var_base> var_list);
1 by brian clean slate	1170	bool not_all_support_one_shot(List<set_var_base> *var_list);
520.1.22 by Brian Aker Second pass of thd cleanup	1171	void fix_delay_key_write(Session *session, enum_var_type type);
1 by brian clean slate	1172	void fix_slave_exec_mode(enum_var_type type);
	1173	extern sys_var_str sys_init_connect;
	1174	extern sys_var_str sys_init_slave;
520.1.22 by Brian Aker Second pass of thd cleanup	1175	extern sys_var_session_time_zone sys_time_zone;
520.1.22 by Brian Aker Second pass of thd cleanup	1176	extern sys_var_session_bit sys_autocommit;
264.2.6 by Andrey Hristov Constify the usage of CHARSET_INFO almost to the last place in the code.	1177	const CHARSET_INFO get_old_charset_by_name(const char old_name);
482 by Brian Aker Remove uint.	1178	unsigned char* find_named(I_List<NAMED_LIST> list, const char name, uint32_t length,
1 by brian clean slate	1179	NAMED_LIST **found);
	1180
	1181	extern sys_var_str sys_var_general_log_path, sys_var_slow_log_path;
	1182
	1183	/* key_cache functions */
	1184	KEY_CACHE get_key_cache(LEX_STRING cache_name);
482 by Brian Aker Remove uint.	1185	KEY_CACHE get_or_create_key_cache(const char name, uint32_t length);
1 by brian clean slate	1186	void free_key_cache(const char name, KEY_CACHE key_cache);
	1187	bool process_key_caches(process_key_cache_t func);
	1188	void delete_elements(I_List<NAMED_LIST> *list,
481 by Brian Aker Remove all of uchar.	1189	void (free_element)(const char, unsigned char*));
575.1.6 by Monty Taylor Cleaned up some headers for PCH.	1190
575.1.6 by Monty Taylor Cleaned up some headers for PCH.	1191	#endif /* DRIZZLED_ITEM_SET_H */