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-rw-r--r--sql/sql_handler.h86
1 files changed, 86 insertions, 0 deletions
diff --git a/sql/sql_handler.h b/sql/sql_handler.h
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+#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
+ 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
+
+#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_CSTRING handler_name;
+ LEX_CSTRING db;
+ LEX_CSTRING 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, SQL_HANDLER *reopen);
+bool mysql_ha_close(THD *thd, TABLE_LIST *tables);
+bool mysql_ha_read(THD *, TABLE_LIST *,enum enum_ha_read_modes, const char *,
+ List<Item> *,enum ha_rkey_function,Item *,ha_rows,ha_rows);
+void mysql_ha_flush(THD *thd);
+void mysql_ha_flush_tables(THD *thd, TABLE_LIST *all_tables);
+void mysql_ha_rm_tables(THD *thd, TABLE_LIST *tables);
+void mysql_ha_cleanup_no_free(THD *thd);
+void mysql_ha_cleanup(THD *thd);
+void mysql_ha_set_explicit_lock_duration(THD *thd);
+void mysql_ha_rm_temporary_tables(THD *thd);
+
+SQL_HANDLER *mysql_ha_read_prepare(THD *thd, TABLE_LIST *tables,
+ enum enum_ha_read_modes mode,
+ const char *keyname,
+ List<Item> *key_expr, enum ha_rkey_function ha_rkey_mode,
+ Item *cond);
+#endif