77 lines
2.4 KiB
C++
77 lines
2.4 KiB
C++
/* Copyright (c) 2016, 2019, 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, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed 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 included with MySQL.
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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 MYSQL_REGISTRY_METADATA_H
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#define MYSQL_REGISTRY_METADATA_H
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#include <memory>
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#include <string>
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#include <unordered_map>
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typedef std::string my_string;
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typedef std::unordered_map<my_string, my_string>
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my_unordered_string_to_string_map;
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/**
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The metadata class used by both the registry and the dynamic loader services
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to store and manage metadata information related to specified objects.
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*/
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class my_metadata {
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protected:
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my_unordered_string_to_string_map data;
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public:
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my_metadata();
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my_metadata(my_metadata &other);
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/**
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The data type of the iterator used.
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Keep consistent with the type of the underlying data structure
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*/
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class const_iterator
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: public my_unordered_string_to_string_map::const_iterator {
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my_unordered_string_to_string_map *data;
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public:
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const_iterator(my_unordered_string_to_string_map::const_iterator iter,
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my_unordered_string_to_string_map *data_arg);
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my_unordered_string_to_string_map *get_data();
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bool is_at_end();
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};
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/* update service */
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bool set_value(const char *name, const char *value);
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/* query service */
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bool get_value(const char *name, const char **value);
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/* enumeration service */
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const_iterator create_iterator();
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static bool release_iterator(const_iterator *iter);
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};
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#endif /* MYSQL_REGISTRY_METADATA_H */
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