diff options
Diffstat (limited to 'sql/sql_handler.h')
-rw-r--r-- | sql/sql_handler.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/sql/sql_handler.h b/sql/sql_handler.h new file mode 100644 index 00000000000..54e72e9f50e --- /dev/null +++ b/sql/sql_handler.h @@ -0,0 +1,61 @@ +/* Copyright (C) 2010 Monty Program Ab + 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 + the Free Software Foundation; version 2 of the License. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + +#ifdef USE_PRAGMA_INTERFACE +#pragma interface /* gcc class implementation */ +#endif + +/* 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; + + 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::INITIALIZED) + { init(); clear_alloc_root(&mem_root); base_data= 0; } + void init() { keyno= -1; table= 0; lock= 0; } + void reset(); + + ~SQL_HANDLER(); +}; + +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); +void mysql_ha_flush(THD *thd); +void mysql_ha_rm_tables(THD *thd, TABLE_LIST *tables, bool is_locked); +void mysql_ha_cleanup(THD *thd); + +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); |