73 lines
1.9 KiB
C++
73 lines
1.9 KiB
C++
/*
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Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
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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 as published by
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the Free Software Foundation; version 2 of the License.
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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 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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*/
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#ifndef SHOW_VARIABLE_QUERY_EXTRACTOR_INCLUDED
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#define SHOW_VARIABLE_QUERY_EXTRACTOR_INCLUDED
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#include "i_callable.h"
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#include "base/mysql_query_runner.h"
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#include "mysql.h"
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#include<string>
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#include<vector>
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namespace Mysql{
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namespace Tools{
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namespace Base{
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/**
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Extracts the value of server variable.
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*/
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class Show_variable_query_extractor
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{
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public:
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/**
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Extract the value of server variable.
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@param[in] query_runner MySQL query runner to use.
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@param[in] variable Name of variable to get value of.
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@param[out] value reference to String to store variable value to.
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@param[out] value reference to bool to store if variable was found.
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@return nonzero if error was encountered.
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*/
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static int64 get_variable_value(
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Mysql_query_runner* query_runner, std::string variable,
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std::string& value, bool& exists);
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private:
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Show_variable_query_extractor();
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/**
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Result row callback to be used in query runner.
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*/
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int64 extract_variable(const Mysql_query_runner::Row& result_row);
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/**
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Temporary placeholder for extracted value.
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*/
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std::string m_extracted_variable;
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/**
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Temporary placeholder for value received flag.
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*/
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bool m_exists;
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};
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}
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}
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}
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#endif
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