126 lines
4.6 KiB
C++
126 lines
4.6 KiB
C++
/*
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Copyright (c) 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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*/
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#ifndef Ndb_sql_metadata_table_H
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#define Ndb_sql_metadata_table_H
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#include <cstdint>
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#include <string>
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#include "storage/ndb/include/ndbapi/NdbDictionary.hpp"
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#include "storage/ndb/plugin/ndb_record_layout.h"
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#include "storage/ndb/plugin/ndb_util_table.h"
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// RAII style class for creating and updating the table
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class Ndb_sql_metadata_table : public Ndb_util_table {
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Ndb_sql_metadata_table() = delete;
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Ndb_sql_metadata_table(const Ndb_sql_metadata_table &) = delete;
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bool define_table_ndb(NdbDictionary::Table &table,
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unsigned mysql_version) const override;
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bool define_indexes(const NdbDictionary::Table &table,
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unsigned int mysql_version) const override;
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public:
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Ndb_sql_metadata_table(class Thd_ndb *);
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virtual ~Ndb_sql_metadata_table();
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bool check_schema() const override;
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bool need_upgrade() const override;
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std::string define_table_dd() const override;
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const NdbDictionary::Index *get_index() const;
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bool drop_events_in_NDB() const override { return true; }
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};
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/* Class provides an API for using the table, NdbRecord-style.
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It has a default constructor, so it can be statically allocated,
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but it cannot be used until after setup_records() is called.
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*/
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class Ndb_sql_metadata_api {
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public:
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Ndb_sql_metadata_api()
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: m_record_layout(5) // five columns in table
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{}
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~Ndb_sql_metadata_api() = default;
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Ndb_sql_metadata_api(const Ndb_sql_metadata_api &) = delete;
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Ndb_sql_metadata_api &operator=(const Ndb_sql_metadata_api &) = delete;
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/* Record Types */
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static constexpr short TYPE_USER = 11;
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static constexpr short TYPE_GRANT = 12;
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void setup(NdbDictionary::Dictionary *, const NdbDictionary::Table *);
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void clear(NdbDictionary::Dictionary *);
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bool isInitialized() const { return m_ordered_index_rec; }
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NdbRecord *rowNdbRecord() const { return m_row_rec; }
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NdbRecord *noteNdbRecord() const { return m_note_rec; }
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NdbRecord *keyNdbRecord() const { return m_hash_key_rec; }
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NdbRecord *orderedNdbRecord() const { return m_ordered_index_rec; }
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size_t getRowSize() const { return m_full_record_size; }
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size_t getNoteSize() const { return m_note_record_size; }
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size_t getKeySize() const { return m_key_record_size; }
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void setType(char *buf, short a) { layout().setValue(0, a, buf); }
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void setName(char *buf, std::string a) { layout().setValue(1, a, buf); }
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void packName(char *buf, std::string a) { layout().packValue(1, a, buf); }
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void setSeq(char *buf, short a) { layout().setValue(2, a, buf); }
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void setNote(char *buf, uint32_t *a) { layout().setValue(3, a, buf); }
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void setSql(char *buf, std::string a) { layout().setValue(4, a, buf); }
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void getType(const char *buf, unsigned short *a) {
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layout().getValue(buf, 0, a);
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}
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void getName(const char *buf, size_t *a, const char **b) {
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layout().getValue(buf, 1, a, b);
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}
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void getSeq(const char *buf, unsigned short *a) {
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layout().getValue(buf, 2, a);
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}
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/* Getter for nullable column returns bool; true = NOT NULL */
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bool getNote(const char *buf, uint32_t *a) {
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return layout().getValue(buf, 3, a);
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}
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void getSql(const char *buf, size_t *a, const char **b) {
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layout().getValue(buf, 4, a, b);
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}
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private:
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Ndb_record_layout &layout() { return m_record_layout; }
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Ndb_record_layout m_record_layout;
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NdbRecord *m_row_rec{nullptr};
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NdbRecord *m_note_rec{nullptr};
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NdbRecord *m_hash_key_rec{nullptr};
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NdbRecord *m_ordered_index_rec{nullptr};
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size_t m_full_record_size{0};
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size_t m_note_record_size{0};
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size_t m_key_record_size{0};
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};
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#endif
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