140 lines
3.6 KiB
C++
140 lines
3.6 KiB
C++
/* Copyright (c) 2006, 2015, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef SQL_HANDLER_INCLUDED
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#define SQL_HANDLER_INCLUDED
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#include "my_base.h" /* ha_rkey_function, ha_rows */
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#include "sql_cmd.h" // Sql_cmd
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#include "sql_lex.h" // enum_ha_read_modes
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#include "sql_list.h" /* List */
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class THD;
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struct TABLE_LIST;
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/**
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Sql_cmd_handler_open represents HANDLER OPEN statement.
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@note Some information about this statement, for example, table to be
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opened is still kept in LEX class.
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*/
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class Sql_cmd_handler_open : public Sql_cmd
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{
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public:
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Sql_cmd_handler_open()
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{}
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virtual ~Sql_cmd_handler_open()
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{}
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virtual enum_sql_command sql_command_code() const
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{
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return SQLCOM_HA_OPEN;
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}
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virtual bool execute(THD *thd);
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};
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/**
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Sql_cmd_handler_read represents HANDLER READ statement.
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@note Some information about this statement, for example, table
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list element which identifies HANDLER to be read from,
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WHERE and LIMIT clauses is still kept in LEX class.
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*/
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class Sql_cmd_handler_read : public Sql_cmd
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{
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public:
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Sql_cmd_handler_read(enum_ha_read_modes read_mode,
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const char *key_name,
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List<Item> *key_expr,
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ha_rkey_function rkey_mode)
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: m_read_mode(read_mode), m_key_name(key_name), m_key_expr(key_expr),
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m_rkey_mode(rkey_mode)
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{}
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virtual ~Sql_cmd_handler_read()
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{}
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virtual enum_sql_command sql_command_code() const
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{
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return SQLCOM_HA_READ;
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}
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virtual bool execute(THD *thd);
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private:
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/** Read mode for HANDLER READ: FIRST, NEXT, LAST, ... */
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enum enum_ha_read_modes m_read_mode;
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/**
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Name of key to be used for reading,
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NULL in cases when natural row-order is to be used.
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*/
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const char *m_key_name;
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/** Key values to be satisfied. */
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List<Item> *m_key_expr;
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/** Type of condition for key values to be satisfied. */
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enum ha_rkey_function m_rkey_mode;
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};
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/**
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Sql_cmd_handler_close represents HANDLER CLOSE statement.
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@note Table list element which identifies HANDLER to be closed
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still resides in LEX class.
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*/
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class Sql_cmd_handler_close : public Sql_cmd
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{
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public:
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Sql_cmd_handler_close()
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{}
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virtual ~Sql_cmd_handler_close()
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{}
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virtual enum_sql_command sql_command_code() const
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{
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return SQLCOM_HA_CLOSE;
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}
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virtual bool execute(THD *thd);
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};
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void mysql_ha_flush(THD *thd);
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void mysql_ha_flush_tables(THD *thd, TABLE_LIST *all_tables);
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void mysql_ha_rm_tables(THD *thd, TABLE_LIST *tables);
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void mysql_ha_rm_temporary_tables(THD *thd);
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void mysql_ha_cleanup(THD *thd);
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void mysql_ha_set_explicit_lock_duration(THD *thd);
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typedef bool Log_func(THD*, TABLE*, bool,
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const uchar*, const uchar*);
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int binlog_log_row(TABLE* table,
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const uchar *before_record,
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const uchar *after_record,
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Log_func *log_func);
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#endif /* SQL_HANDLER_INCLUDED */
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