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1<?php
2/**
3 *
4 * This file is part of the phpBB Forum Software package.
5 *
6 * @copyright (c) phpBB Limited <https://www.phpbb.com>
7 * @license GNU General Public License, version 2 (GPL-2.0)
8 *
9 * For full copyright and license information, please see
10 * the docs/CREDITS.txt file.
11 *
12 */
13
14namespace phpbb\db\migration\data\v32x;
15
16class user_notifications_table_unique_index extends \phpbb\db\migration\migration
17{
18    public static function depends_on()
19    {
20        return array(
21            '\phpbb\db\migration\data\v32x\user_notifications_table_remove_duplicates',
22        );
23    }
24
25    public function update_schema()
26    {
27        return array(
28            'drop_keys'            => array(
29                $this->table_prefix . 'user_notifications' => array(
30                    'itm_usr_mthd',
31                ),
32            ),
33            'add_unique_index'  => array(
34                $this->table_prefix . 'user_notifications' => array(
35                    'itm_usr_mthd'    => array('item_type', 'item_id', 'user_id', 'method'),
36                ),
37            ),
38        );
39    }
40
41    public function revert_schema()
42    {
43        return array(
44            'drop_keys' => array(
45                $this->table_prefix . 'user_notifications' => array(
46                    'itm_usr_mthd',
47                ),
48            ),
49        );
50    }
51}