sys_var_pluginvar Class Reference

Inheritance diagram for sys_var_pluginvar:

Collaboration diagram for sys_var_pluginvar:

Public Member Functions
	sys_var_pluginvar (sys_var_chain *chain, const char *name_arg, struct st_mysql_sys_var *plugin_var_arg)
sys_var_pluginvar *	cast_pluginvar ()
bool	check_update_type (Item_result type)
SHOW_TYPE	show_type ()
uchar *	real_value_ptr (THD *thd, enum_var_type type)
TYPELIB *	plugin_var_typelib (void)
uchar *	do_value_ptr (THD *thd, enum_var_type type, LEX_STRING *base)
uchar *	session_value_ptr (THD *thd, LEX_STRING *base)
uchar *	global_value_ptr (THD *thd, LEX_STRING *base)
bool	do_check (THD *thd, set_var *var)
virtual void	session_save_default (THD *thd, set_var *var)
virtual void	global_save_default (THD *thd, set_var *var)
bool	session_update (THD *thd, set_var *var)
bool	global_update (THD *thd, set_var *var)
Public Member Functions inherited from sys_var
	sys_var (sys_var_chain *chain, const char *name_arg, const char *comment, int flag_args, ptrdiff_t off, int getopt_id, enum get_opt_arg_type getopt_arg_type, SHOW_TYPE show_val_type_arg, longlong def_val, PolyLock *lock, enum binlog_status_enum binlog_status_arg, on_check_function on_check_func, on_update_function on_update_func, const char *substitute, int parse_flag)
virtual void	cleanup ()
bool	check (THD *thd, set_var *var)
uchar *	value_ptr (THD *thd, enum_var_type type, LEX_STRING *base)
virtual void	update_default (longlong new_def_value)
bool	set_default (THD *thd, set_var *var)
bool	update (THD *thd, set_var *var)
int	scope () const
const CHARSET_INFO *	charset (THD *thd)
bool	is_readonly () const
bool	not_visible () const
bool	is_struct ()
bool	is_written_to_binlog (enum_var_type type)
bool	check_type (enum_var_type type)
bool	register_option (std::vector< my_option > *array, int parse_flags)
void	do_deprecated_warning (THD *thd)

Static Public Member Functions
static void *	operator new (size_t size, MEM_ROOT *mem_root)
static void	operator delete (void *ptr_arg, size_t size)

Public Attributes
struct st_plugin_int *	plugin
struct st_mysql_sys_var *	plugin_var
const char *	orig_pluginvar_name
Public Attributes inherited from sys_var
sys_var *	next
LEX_CSTRING	name
enum sys_var::binlog_status_enum	binlog_status

Additional Inherited Members
Public Types inherited from sys_var
enum	flag_enum {   GLOBAL, SESSION, ONLY_SESSION, SCOPE_MASK = 1023,   READONLY = 1024, ALLOCATED = 2048, INVISIBLE = 4096 }
enum	binlog_status_enum { VARIABLE_NOT_IN_BINLOG, SESSION_VARIABLE_IN_BINLOG }
Static Public Attributes inherited from sys_var
static const int	PARSE_EARLY = 1
static const int	PARSE_NORMAL = 2
Protected Types inherited from sys_var
typedef bool(*	on_check_function )(sys_var *self, THD *thd, set_var *var)
typedef bool(*	on_update_function )(sys_var *self, THD *thd, enum_var_type type)
Protected Member Functions inherited from sys_var
uchar *	session_var_ptr (THD *thd)
uchar *	global_var_ptr ()
Protected Attributes inherited from sys_var
int	flags
	or'ed flag_enum values
int	m_parse_flag
	either PARSE_EARLY or PARSE_NORMAL.
const SHOW_TYPE	show_val_type
	what value_ptr() returns for sql_show.cc
my_option	option
	min, max, default values are stored here
PolyLock *	guard
	second lock that protects the variable
ptrdiff_t	offset
	offset to the value from global_system_variables
on_check_function	on_check
on_update_function	on_update
const char *const	deprecation_substitute
bool	is_os_charset
	true if the value is in character_set_filesystem

Detailed Description

Definition at line 214 of file sql_plugin.cc.

Member Function Documentation

sys_var_pluginvar* sys_var_pluginvar::cast_pluginvar ( )

inlinevirtual

downcast for sys_var_pluginvar. Returns this if it's an instance of sys_var_pluginvar, and 0 otherwise.

Reimplemented from sys_var.

Definition at line 242 of file sql_plugin.cc.

virtual void sys_var_pluginvar::global_save_default ( THD *  thd, set_var *  var  )

inlinevirtual

save the global default value of the variable in var

Implements sys_var.

Definition at line 254 of file sql_plugin.cc.

virtual void sys_var_pluginvar::session_save_default ( THD *  thd, set_var *  var  )

inlinevirtual

save the session default value of the variable in var

Implements sys_var.

Definition at line 253 of file sql_plugin.cc.

uchar* sys_var_pluginvar::session_value_ptr ( THD *  thd, LEX_STRING *  base  )

inlinevirtual

A pointer to a value of the variable for SHOW. It must be of show_val_type type (bool for SHOW_BOOL, int for SHOW_INT, longlong for SHOW_LONGLONG, etc).

Reimplemented from sys_var.

Definition at line 248 of file sql_plugin.cc.

Member Data Documentation

const char* sys_var_pluginvar::orig_pluginvar_name

variable name from whatever is hard-coded in the plugin source and doesn't have pluginname- prefix is replaced by an allocated name with a plugin prefix. When plugin is uninstalled we need to restore the pointer to point to the hard-coded value, because plugin may be installed/uninstalled many times without reloading the shared object.

Definition at line 226 of file sql_plugin.cc.

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The documentation for this class was generated from the following file:

• sql/sql_plugin.cc