116 lines
3.3 KiB
C++
116 lines
3.3 KiB
C++
/* Copyright (c) 2020, 2024, Oracle and/or its affiliates.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is designed to work with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have either included with
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the program or referenced in the documentation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef UDF_SERVICE_UTIL_H
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#define UDF_SERVICE_UTIL_H
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#include "mysql/components/my_service.h"
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constexpr int MAX_CHARSET_LEN = 100;
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/*
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This is a UDF utility class to set charset for arguments and
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return values of UDF.
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For usage please check sql/rpl_async_conn_failover_udf.cc.
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*/
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class Udf_charset_service {
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private:
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/* Name of service registry to be acquired. */
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static std::string m_service_name;
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/* The charset to be used for argument and return values. */
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static std::string m_charset_name;
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/*
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The extension type used by UDF metadata
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(sql/server_component/udf_metadata_imp.cc).
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*/
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static std::string m_arg_type;
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/**
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Release the udf_metadata_service from the registry service.
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@retval true if service could not be acquired
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@retval false Otherwise
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*/
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static bool deinit();
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/**
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Acquires the udf_metadata_service from the registry service.
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@retval true if service could not be acquired
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@retval false Otherwise
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*/
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static bool init();
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public:
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Udf_charset_service() = default;
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~Udf_charset_service() = default;
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/**
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Get service name.
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@return Service name.
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*/
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static std::string get_service_name() { return m_service_name; }
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/**
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Set the specified character set.
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@param[in] charset_name Character set that has to be set.
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*/
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static void set_charset(std::string charset_name) {
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m_charset_name = charset_name;
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}
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/**
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Get the current character set getting used.
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@retval Character set name.
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*/
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std::string get_charset() { return m_charset_name; }
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/**
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Set the specified character set of UDF return value.
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@param[in] initid UDF_INIT structure
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@retval true Could not set the character set of return value
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@retval false Otherwise
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*/
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static bool set_return_value_charset(UDF_INIT *initid);
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/**
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Set the specified character set of all UDF arguments.
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@param[in] args UDF_ARGS structure
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@retval true Could not set the character set of any of the argument
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@retval false Otherwise
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*/
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static bool set_args_charset(UDF_ARGS *args);
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};
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#endif /* UDF_SERVICE_UTIL_H */
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