sys_var_pluginvar Class Reference

Inheritance diagram for sys_var_pluginvar:

List of all members.

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)
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

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Member Function Documentation

sys_var_pluginvar* sys_var_pluginvar::cast_pluginvar

(

)

[inline, virtual]

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

Reimplemented from sys_var.

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

save the global default value of the variable in var

Implements sys_var.

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

save the session default value of the variable in var

Implements sys_var.

uchar* sys_var_pluginvar::session_value_ptr	(	THD *	thd,
		LEX_STRING *	base
	)		[inline, virtual]

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.

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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.

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

• sql_plugin.cc