MySQL 8.0.31
Source Code Documentation
system_variable_source.h
Go to the documentation of this file.
1/* Copyright (c) 2017, 2022, Oracle and/or its affiliates.
2
3This program is free software; you can redistribute it and/or modify
4it under the terms of the GNU General Public License, version 2.0,
5as published by the Free Software Foundation.
6
7This program is also distributed with certain software (including
8but not limited to OpenSSL) that is licensed under separate terms,
9as designated in a particular file or component or in included license
10documentation. The authors of MySQL hereby grant you an additional
11permission to link the program and your derivative works with the
12separately licensed software that they have included with MySQL.
13
14This program is distributed in the hope that it will be useful,
15but WITHOUT ANY WARRANTY; without even the implied warranty of
16MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17GNU General Public License, version 2.0, for more details.
18
19You should have received a copy of the GNU General Public License
20along with this program; if not, write to the Free Software
21Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
22
23#ifndef SYSTEM_VARIABLE_SOURCE_H
24#define SYSTEM_VARIABLE_SOURCE_H
25
28
29/**
30 A service to deal with source of system variable. A system variable
31 could be set from different sources for eg: Command line, Configuration
32 file etc. This service exposes method to get the source information of
33 a given system variable.
34*/
35BEGIN_SERVICE_DEFINITION(system_variable_source)
36
37/**
38 Get source information of given system variable.
39
40 @param [in] name Name of system variable in system charset
41 @param [in] length Name length of system variable
42 @param [out] source Source of system variable
43 @return Status of performance operation
44 @retval false Success
45 @retval true Failure
46*/
47
48DECLARE_BOOL_METHOD(get, (const char *name, unsigned int length,
50
51END_SERVICE_DEFINITION(system_variable_source)
52
53#endif /* SYSTEM_VARIABLE_SOURCE_H */
bool length(const dd::Spatial_reference_system *srs, const Geometry *g1, double *length, bool *null) noexcept
Computes the length of linestrings and multilinestrings.
Definition: length.cc:75
static mysql_service_status_t get(reference_caching_cache cache, unsigned service_name_index, const my_h_service **refs) noexcept
Definition: component.cc:113
repeated Source source
Definition: replication_asynchronous_connection_failover.proto:41
#define END_SERVICE_DEFINITION(name)
A macro to end the last Service definition started with the BEGIN_SERVICE_DEFINITION macro.
Definition: service.h:90
#define BEGIN_SERVICE_DEFINITION(name)
Declares a new Service.
Definition: service.h:85
#define DECLARE_BOOL_METHOD(name, args)
Declares a method that returns bool as a part of the Service definition.
Definition: service.h:111
case opt name
Definition: sslopt-case.h:32
enum_variable_source
This enum values define how system variables are set.
Definition: system_variable_source_type.h:32