95 lines
3.4 KiB
C++
95 lines
3.4 KiB
C++
/* Copyright (c) 2017, 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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#include <sql/server_component/set_variables_helper.h>
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#include <sql/server_component/storing_auto_thd.h>
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#include <sql/sql_class.h>
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Set_variables_helper::Set_variables_helper(THD *thd) {
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if (thd) {
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m_thd_auto = nullptr;
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m_thd = thd;
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} else {
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m_thd_auto = new Storing_auto_THD();
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m_thd = m_thd_auto->get_THD();
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}
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m_lex_save = m_thd->lex;
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m_thd->lex = &m_lex_tmp;
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lex_start(m_thd);
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}
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Set_variables_helper::~Set_variables_helper() {
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lex_end(m_thd->lex);
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m_thd->lex = m_lex_save;
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if (m_thd_auto) {
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delete m_thd_auto;
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m_thd = nullptr;
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}
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}
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bool Set_variables_helper::add_variable(
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const char *prefix, size_t prefix_length, const char *suffix,
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size_t suffix_length, Item *variable_value, enum_var_type var_type) {
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const std::string_view prefix_v{prefix, prefix_length};
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const std::string_view suffix_v{suffix, suffix_length};
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const System_variable_tracker var_tracker =
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System_variable_tracker::make_tracker(prefix_v, suffix_v);
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if (var_tracker.access_system_variable(m_thd)) return true;
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return m_sysvar_list.push_back(
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new (m_thd->mem_root) set_var(var_type, var_tracker, variable_value));
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}
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bool Set_variables_helper::execute() {
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return m_sysvar_list.elements > 0 &&
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sql_set_variables(m_thd, &m_sysvar_list, false);
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}
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bool Set_variables_helper::check_variable_update_type(const char *prefix,
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size_t prefix_length,
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const char *suffix,
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size_t suffix_length,
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Item *variable_value) {
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const std::string_view prefix_v{prefix, prefix_length};
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const std::string_view suffix_v{suffix, suffix_length};
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const System_variable_tracker var_tracker =
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System_variable_tracker::make_tracker(prefix_v, suffix_v);
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auto f = [variable_value](const System_variable_tracker &,
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sys_var *var) -> int {
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if (var->check_update_type(variable_value->result_type())) {
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my_error(ER_WRONG_TYPE_FOR_VAR, MYF(0), var->name.str);
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return -1;
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}
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return 0;
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};
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int ret =
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var_tracker
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.access_system_variable<int>(m_thd, f, Suppress_not_found_error::NO)
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.value_or(-1);
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return ret == -1;
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}
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