1 #ifndef SQL_HANDLER_INCLUDED 2 #define SQL_HANDLER_INCLUDED 3 /* Copyright (c) 2006, 2015, Oracle and/or its affiliates. 4 Copyright (C) 2010, 2015, MariaDB 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; version 2 of the License. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, write to the Free Software 17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */ 18 19 #ifdef USE_PRAGMA_INTERFACE 20 #pragma interface /* gcc class implementation */ 21 #endif 22 23 #include "sql_class.h" /* enum_ha_read_mode */ 24 #include "my_base.h" /* ha_rkey_function, ha_rows */ 25 #include "sql_list.h" /* List */ main(int argc,const char * argv[])26 27 /* Open handlers are stored here */ 28 29 class SQL_HANDLER { 30 public: 31 TABLE *table; 32 List<Item> fields; /* Fields, set on open */ 33 THD *thd; 34 LEX_CSTRING handler_name; 35 LEX_CSTRING db; 36 LEX_CSTRING table_name; 37 MEM_ROOT mem_root; 38 MYSQL_LOCK *lock; 39 MDL_request mdl_request; 40 41 key_part_map keypart_map; 42 int keyno; /* Used key */ 43 uint key_len; 44 enum enum_ha_read_modes mode; 45 46 /* This is only used when deleting many handler objects */ 47 SQL_HANDLER *next; 48 49 Query_arena arena; 50 char *base_data; 51 SQL_HANDLER(THD *thd_arg) : 52 thd(thd_arg), arena(&mem_root, Query_arena::STMT_INITIALIZED) 53 { init(); clear_alloc_root(&mem_root); base_data= 0; } 54 void init() 55 { 56 keyno= -1; 57 table= 0; 58 lock= 0; 59 mdl_request.ticket= 0; 60 } 61 void reset(); 62 63 ~SQL_HANDLER(); 64 }; 65 66 class THD; 67 struct TABLE_LIST; 68 69 bool mysql_ha_open(THD *thd, TABLE_LIST *tables, SQL_HANDLER *reopen); 70 bool mysql_ha_close(THD *thd, TABLE_LIST *tables); 71 bool mysql_ha_read(THD *, TABLE_LIST *,enum enum_ha_read_modes, const char *, 72 List<Item> *,enum ha_rkey_function,Item *,ha_rows,ha_rows); 73 void mysql_ha_flush(THD *thd); 74 void mysql_ha_flush_tables(THD *thd, TABLE_LIST *all_tables); 75 void mysql_ha_rm_tables(THD *thd, TABLE_LIST *tables); 76 void mysql_ha_cleanup(THD *thd); 77 void mysql_ha_set_explicit_lock_duration(THD *thd); 78 void mysql_ha_rm_temporary_tables(THD *thd); 79 80 SQL_HANDLER *mysql_ha_read_prepare(THD *thd, TABLE_LIST *tables, 81 enum enum_ha_read_modes mode, 82 const char *keyname, 83 List<Item> *key_expr, enum ha_rkey_function ha_rkey_mode, 84 Item *cond); 85 #endif 86