1 /* 2 Copyright (c) 2015, 2021, Oracle and/or its affiliates. 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License, version 2.0, 6 as published by the Free Software Foundation. 7 8 This program is also distributed with certain software (including 9 but not limited to OpenSSL) that is licensed under separate terms, 10 as designated in a particular file or component or in included license 11 documentation. The authors of MySQL hereby grant you an additional 12 permission to link the program and your derivative works with the 13 separately licensed software that they have included with MySQL. 14 15 This program is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License, version 2.0, for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program; if not, write to the Free Software 22 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 23 */ 24 25 #ifndef MYSQL_OBJECT_READER_INCLUDED 26 #define MYSQL_OBJECT_READER_INCLUDED 27 28 #include "i_object_reader.h" 29 #include "abstract_data_formatter_wrapper.h" 30 #include "abstract_mysql_chain_element_extension.h" 31 #include "mysql_object_reader_options.h" 32 #include "row_group_dump_task.h" 33 #include "table_rows_dump_task.h" 34 #include "mysql_field.h" 35 36 namespace Mysql{ 37 namespace Tools{ 38 namespace Dump{ 39 40 /** 41 Parses any DB object(excluding rows and privileges for DB objects) data using 42 connection to MySQL server. 43 */ 44 class Mysql_object_reader 45 : public Abstract_data_formatter_wrapper, public I_object_reader, 46 public Abstract_mysql_chain_element_extension 47 { 48 public: 49 Mysql_object_reader( 50 I_connection_provider* connection_provider, 51 Mysql::I_callable<bool, const Mysql::Tools::Base::Message_data&>* 52 message_handler, Simple_id_generator* object_id_generator, 53 const Mysql_object_reader_options* options); 54 55 void read_object(Item_processing_data* item_to_process); 56 57 void format_rows( 58 Item_processing_data* item_to_process, Row_group_dump_task* row_group); 59 60 private: 61 void read_table_rows_task(Table_rows_dump_task* table_rows_dump_task, 62 Item_processing_data* item_to_process); 63 64 const Mysql_object_reader_options* m_options; 65 66 class Rows_fetching_context 67 { 68 public: 69 Rows_fetching_context(Mysql_object_reader* parent, 70 Item_processing_data* item_processing, bool has_generated_column); 71 72 int64 result_callback( 73 const Mysql::Tools::Base::Mysql_query_runner::Row& row_data); 74 75 void process_buffer(); 76 bool is_all_rows_processed(); 77 78 private: 79 void acquire_fields_information(MYSQL_RES* mysql_result); 80 81 Mysql_object_reader* m_parent; 82 Item_processing_data* m_item_processing; 83 Row_group_dump_task m_row_group; 84 std::vector<Mysql_field> m_fields; 85 }; 86 }; 87 88 } 89 } 90 } 91 92 #endif 93