diff options
Diffstat (limited to 'sql/sql_handler.h')
| -rw-r--r-- | sql/sql_handler.h | 56 |
1 files changed, 51 insertions, 5 deletions
diff --git a/sql/sql_handler.h b/sql/sql_handler.h index c6d8c5ed0c0..7fe5ae5bba8 100644 --- a/sql/sql_handler.h +++ b/sql/sql_handler.h @@ -1,4 +1,7 @@ -/* Copyright (c) 2006, 2015, Oracle and/or its affiliates. All rights reserved. +#ifndef SQL_HANDLER_INCLUDED +#define SQL_HANDLER_INCLUDED +/* Copyright (c) 2006, 2015, Oracle and/or its affiliates. + Copyright (C) 2010, 2015, MariaDB This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -13,17 +16,57 @@ along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ -#ifndef SQL_HANDLER_INCLUDED -#define SQL_HANDLER_INCLUDED +#ifdef USE_PRAGMA_INTERFACE +#pragma interface /* gcc class implementation */ +#endif #include "sql_class.h" /* enum_ha_read_mode */ #include "my_base.h" /* ha_rkey_function, ha_rows */ #include "sql_list.h" /* List */ +/* Open handlers are stored here */ + +class SQL_HANDLER { +public: + TABLE *table; + List<Item> fields; /* Fields, set on open */ + THD *thd; + LEX_STRING handler_name; + LEX_STRING db; + LEX_STRING table_name; + MEM_ROOT mem_root; + MYSQL_LOCK *lock; + MDL_request mdl_request; + + key_part_map keypart_map; + int keyno; /* Used key */ + uint key_len; + enum enum_ha_read_modes mode; + + /* This is only used when deleting many handler objects */ + SQL_HANDLER *next; + + Query_arena arena; + char *base_data; + SQL_HANDLER(THD *thd_arg) : + thd(thd_arg), arena(&mem_root, Query_arena::STMT_INITIALIZED) + { init(); clear_alloc_root(&mem_root); base_data= 0; } + void init() + { + keyno= -1; + table= 0; + lock= 0; + mdl_request.ticket= 0; + } + void reset(); + + ~SQL_HANDLER(); +}; + class THD; struct TABLE_LIST; -bool mysql_ha_open(THD *thd, TABLE_LIST *tables, bool reopen); +bool mysql_ha_open(THD *thd, TABLE_LIST *tables, SQL_HANDLER *reopen); bool mysql_ha_close(THD *thd, TABLE_LIST *tables); bool mysql_ha_read(THD *, TABLE_LIST *,enum enum_ha_read_modes,char *, List<Item> *,enum ha_rkey_function,Item *,ha_rows,ha_rows); @@ -34,4 +77,7 @@ void mysql_ha_cleanup(THD *thd); void mysql_ha_set_explicit_lock_duration(THD *thd); void mysql_ha_rm_temporary_tables(THD *thd); -#endif /* SQL_HANDLER_INCLUDED */ +SQL_HANDLER *mysql_ha_read_prepare(THD *thd, TABLE_LIST *tables, + enum enum_ha_read_modes mode, char *keyname, + List<Item> *key_expr, Item *cond); +#endif |