/* Copyright (c) 2010, 2012, Oracle and/or its affiliates. All rights reserved.

 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 02110-1301 USA */

#include "sql_parse.h" // check_access
#include "sql_table.h" // mysql_alter_table,
 // mysql_exchange_partition
#include "sql_base.h" // open_temporary_tables
#include "sql_alter.h"


Alter_info::Alter_info(const Alter_info &rhs, MEM_ROOT *mem_root)
 :drop_list(rhs.drop_list, mem_root),
 alter_list(rhs.alter_list, mem_root),
 key_list(rhs.key_list, mem_root),
 create_list(rhs.create_list, mem_root),
 delayed_key_list(rhs.delayed_key_list, mem_root),
 delayed_key_info(rhs.delayed_key_info),
 delayed_key_count(rhs.delayed_key_count),
 flags(rhs.flags),
 keys_onoff(rhs.keys_onoff),
 partition_names(rhs.partition_names, mem_root),
 num_parts(rhs.num_parts),
 requested_algorithm(rhs.requested_algorithm),
 requested_lock(rhs.requested_lock)
{
 /*
 Make deep copies of used objects.
 This is not a fully deep copy - clone() implementations
 of Alter_drop, Alter_column, Key, foreign_key, Key_part_spec
 do not copy string constants. At the same length the only
 reason we make a copy currently is that ALTER/CREATE TABLE
 code changes input Alter_info definitions, but string
 constants never change.
 */
 list_copy_and_replace_each_value(drop_list, mem_root);
 list_copy_and_replace_each_value(alter_list, mem_root);
 list_copy_and_replace_each_value(key_list, mem_root);
 list_copy_and_replace_each_value(create_list, mem_root);
 list_copy_and_replace_each_value(delayed_key_list, mem_root);
 /* partition_names are not deeply copied currently */
}


bool Alter_info::set_requested_algorithm(const LEX_STRING *str)
{
 // To avoid adding new keywords to the grammar, we match strings here.
 if (!my_strcasecmp(system_charset_info, str->str, "INPLACE"))
 requested_algorithm= ALTER_TABLE_ALGORITHM_INPLACE;
 else if (!my_strcasecmp(system_charset_info, str->str, "COPY"))
 requested_algorithm= ALTER_TABLE_ALGORITHM_COPY;
 else if (!my_strcasecmp(system_charset_info, str->str, "DEFAULT"))
 requested_algorithm= ALTER_TABLE_ALGORITHM_DEFAULT;
 else
 return true;
 return false;
}


bool Alter_info::set_requested_lock(const LEX_STRING *str)
{
 // To avoid adding new keywords to the grammar, we match strings here.
 if (!my_strcasecmp(system_charset_info, str->str, "NONE"))
 requested_lock= ALTER_TABLE_LOCK_NONE;
 else if (!my_strcasecmp(system_charset_info, str->str, "SHARED"))
 requested_lock= ALTER_TABLE_LOCK_SHARED;
 else if (!my_strcasecmp(system_charset_info, str->str, "EXCLUSIVE"))
 requested_lock= ALTER_TABLE_LOCK_EXCLUSIVE;
 else if (!my_strcasecmp(system_charset_info, str->str, "DEFAULT"))
 requested_lock= ALTER_TABLE_LOCK_DEFAULT;
 else
 return true;
 return false;
}