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[ticket/16470] Add migration to update existing data
PHPBB3-16470 PHPBB3-14173
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<?php
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/**
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*
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* This file is part of the phpBB Forum Software package.
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*
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* @copyright (c) phpBB Limited <https://www.phpbb.com>
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* @license GNU General Public License, version 2 (GPL-2.0)
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*
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* For full copyright and license information, please see
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* the docs/CREDITS.txt file.
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*
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*/
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namespace phpbb\db\migration\data\v33x;
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class update_user_lastvisit_data extends \phpbb\db\migration\migration
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{
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static public function depends_on()
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{
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return [
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'\phpbb\db\migration\data\v33x\v3310',
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];
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}
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public function update_data()
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{
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return [
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['custom', [[$this, 'update_user_lastvisit_fields']]],
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];
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}
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public function update_user_lastvisit_fields()
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{
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/**
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* Logic is borrowed from function session_gc()
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*
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* Get most recent sessions for registered users
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* Inner SELECT gets most recent sessions for unique session_user_id
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* Outer SELECT gets data for them
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*/
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$sql_select = 'SELECT s1.session_user_id, s1.session_time AS recent_time
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FROM ' . SESSIONS_TABLE . ' AS s1
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INNER JOIN (
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SELECT session_user_id, MAX(session_time) AS recent_time
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FROM ' . SESSIONS_TABLE . '
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WHERE session_user_id <> ' . ANONYMOUS . '
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GROUP BY session_user_id
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) AS s2
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ON s1.session_user_id = s2.session_user_id
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AND s1.session_time = s2.recent_time';
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switch ($this->db->get_sql_layer())
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{
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case 'sqlite3':
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if (phpbb_version_compare($this->db->sql_server_info(true), '3.8.3', '>='))
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{
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// For SQLite versions 3.8.3+ which support Common Table Expressions (CTE)
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$sql = "WITH s3 (session_user_id, session_time) AS ($sql_select)
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UPDATE " . USERS_TABLE . '
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SET (user_lastvisit) = (SELECT session_time FROM s3 WHERE session_user_id = user_id)
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WHERE EXISTS (SELECT session_user_id FROM s3 WHERE session_user_id = user_id)';
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$this->db->sql_query($sql);
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break;
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}
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// No break, for SQLite versions prior to 3.8.3 and Oracle
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case 'oracle':
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$result = $this->db->sql_query($sql_select);
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while ($row = $this->db->sql_fetchrow($result))
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{
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$sql = 'UPDATE ' . USERS_TABLE . '
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SET user_lastvisit = ' . (int) $row['recent_time'] . '
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WHERE user_id = ' . (int) $row['session_user_id'];
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$this->db->sql_query($sql);
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}
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$this->db->sql_freeresult($result);
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break;
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case 'mysqli':
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$sql = 'UPDATE ' . USERS_TABLE . " u,
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($sql_select) s3
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SET u.user_lastvisit = s3.recent_time
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WHERE u.user_id = s3.session_user_id";
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$this->db->sql_query($sql);
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break;
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default:
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$sql = 'UPDATE ' . USERS_TABLE . "
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SET user_lastvisit = s3.recent_time
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FROM ($sql_select) s3
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WHERE user_id = s3.session_user_id";
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$this->db->sql_query($sql);
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break;
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}
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}
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}
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