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Sys_var_enum Class Reference

#include <sys_vars.h>

Inheritance diagram for Sys_var_enum:
Sys_var_typelib sys_var Sys_var_enum_binlog_checksum Sys_var_tx_isolation

List of all members.

Public Member Functions

 Sys_var_enum (const char *name_arg, const char *comment, int flag_args, ptrdiff_t off, size_t size, CMD_LINE getopt, const char *values[], uint def_val, PolyLock *lock=0, enum binlog_status_enum binlog_status_arg=VARIABLE_NOT_IN_BINLOG, on_check_function on_check_func=0, on_update_function on_update_func=0, const char *substitute=0)
bool session_update (THD *thd, set_var *var)
bool global_update (THD *thd, set_var *var)
void session_save_default (THD *thd, set_var *var)
void global_save_default (THD *thd, set_var *var)
uchar * session_value_ptr (THD *thd, LEX_STRING *base)
uchar * global_value_ptr (THD *thd, LEX_STRING *base)

Detailed Description

The class for ENUM variables - variables that take one value from a fixed list of values.

Class specific constructor arguments: char* values[] - 0-terminated list of strings of valid values

Backing store: uint

Do *not* use "enum FOO" variables as a backing store, there is no guarantee that sizeof(enum FOO) == sizeof(uint), there is no guarantee even that sizeof(enum FOO) == sizeof(enum BAR)

Member Function Documentation

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

save the global default value of the variable in var

Implements sys_var.

void Sys_var_enum::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_enum::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.

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