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193 lines
6.6 KiB
193 lines
6.6 KiB
3 months ago
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/* Copyright (c) 2010, 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 RPL_INFO_TABLE_H
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#define RPL_INFO_TABLE_H
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#include <stddef.h>
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#include <sys/types.h>
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#include "lex_string.h"
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#include "my_inttypes.h"
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#include "sql/rpl_info_handler.h" // Rpl_info_handler
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class Rpl_info_table_access;
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class Server_ids;
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struct TABLE;
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/**
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Methods to find information in a table:
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FIND_SCAN does a index scan and stops at n-th occurrence.
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FIND_KEY retrieves the index entry previous populated at
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values if there is any.
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*/
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enum enum_find_method { FIND_SCAN, FIND_KEY };
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class Rpl_info_table : public Rpl_info_handler {
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friend class Rpl_info_factory;
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public:
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virtual ~Rpl_info_table();
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private:
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/**
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This property identifies the name of the schema where a
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replication table is created.
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*/
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LEX_STRING str_schema;
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/**
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This property identifies the name of a replication
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table.
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*/
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LEX_STRING str_table;
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/**
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This property represents a description of the repository.
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Speciffically, "schema"."table".
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*/
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char *description;
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/**
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This property represents the amount of fields in the repository
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primary key.
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*/
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uint m_n_pk_fields;
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/**
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This property identifies the indexes of the primary keys fields
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in the table.
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*/
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const uint *m_pk_field_indexes;
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/**
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This is a pointer to a class that facilitates manipulation
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of replication tables.
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*/
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Rpl_info_table_access *access;
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/**
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Identifies if a table is transactional or non-transactional.
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This is used to provide a crash-safe behaviour.
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*/
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bool is_transactional;
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int do_init_info();
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int do_init_info(uint instance);
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int do_init_info(enum_find_method method, uint instance);
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enum_return_check do_check_info();
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enum_return_check do_check_info(uint instance);
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void do_end_info();
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int do_flush_info(const bool force);
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int do_remove_info();
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int do_clean_info();
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/**
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Returns the number of entries in the table identified by:
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param_schema.param_table.
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@param[in] nparam Number of fields in the table.
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@param[in] param_schema Table's schema.
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@param[in] param_table Table's name.
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@param[in] nullable_bitmap bitmap that holds the fields that are
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allowed to be `NULL`-
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@param[out] counter Number of entries found.
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@retval false Success
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@retval true Error
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*/
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static bool do_count_info(uint nparam, const char *param_schema,
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const char *param_table,
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MY_BITMAP const *nullable_bitmap, uint *counter);
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static int do_reset_info(uint nparam, const char *param_schema,
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const char *param_table, const char *channel_name,
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MY_BITMAP const *nullable_bitmap);
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int do_prepare_info_for_read();
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int do_prepare_info_for_write();
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bool do_set_info(const int pos, const char *value);
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bool do_set_info(const int pos, const uchar *value, const size_t size);
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bool do_set_info(const int pos, const int value);
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bool do_set_info(const int pos, const ulong value);
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bool do_set_info(const int pos, const float value);
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bool do_set_info(const int pos, const Server_ids *value);
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/**
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Setter needed to set nullable fields to `NULL`.
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@param pos the index of the field to set to `NULL`.
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@param value unused value, needed to desimbiguate polimorphism.
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@return true if there was an error and false otherwise.
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*/
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bool do_set_info(const int pos, const std::nullptr_t value);
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/**
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Setter needed to set nullable fields to `NULL`.
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@param pos the index of the field to set to `NULL`.
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@param value unused value, needed to desimbiguate polimorphism.
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@param size unused value size, needed to desimbiguate polimorphism.
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@return true if there was an error and false otherwise.
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*/
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bool do_set_info(const int pos, const std::nullptr_t value,
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const size_t size);
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Rpl_info_handler::enum_field_get_status do_get_info(
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const int pos, char *value, const size_t size, const char *default_value);
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Rpl_info_handler::enum_field_get_status do_get_info(
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const int pos, uchar *value, const size_t size,
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const uchar *default_value);
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Rpl_info_handler::enum_field_get_status do_get_info(const int pos, int *value,
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const int default_value);
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Rpl_info_handler::enum_field_get_status do_get_info(
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const int pos, ulong *value, const ulong default_value);
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Rpl_info_handler::enum_field_get_status do_get_info(
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const int pos, float *value, const float default_value);
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Rpl_info_handler::enum_field_get_status do_get_info(
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const int pos, Server_ids *value, const Server_ids *default_value);
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char *do_get_description_info();
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bool do_is_transactional();
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bool do_update_is_transactional();
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uint do_get_rpl_info_type();
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/**
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Verify if the table primary key fields are at the expected (column)
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position.
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@param table The table handle where the verification will be done.
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@return false if the table primary key fields are fine.
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@return true if problems were found with table primary key fields.
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*/
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bool verify_table_primary_key_fields(TABLE *table);
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Rpl_info_table(uint nparam, const char *param_schema, const char *param_table,
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const uint param_n_pk_fields = 0,
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const uint *param_pk_field_indexes = nullptr,
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MY_BITMAP const *nullable_bitmap = nullptr);
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Rpl_info_table(const Rpl_info_table &info);
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Rpl_info_table &operator=(const Rpl_info_table &info);
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};
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#endif /* RPL_INFO_TABLE_H */
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