gnu-social/lib/notices/inboxnoticestream.php
Alexei Sorokin ef17f3ea7d [CORE][DATABASE] Another approach to semi-join in the inboxnoticestream query
Compared to the solution with INNER JOIN this seems to have better performance
as there is no need to deduplicate the subquery result before use.
2020-06-10 14:21:47 +03:00

145 lines
4.6 KiB
PHP

<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* Stream of notices for a profile's "all" feed
*
* @category NoticeStream
* @package GNUsocial
* @author Evan Prodromou <evan@status.net>
* @author Mikael Nordfeldth <mmn@hethane.se>
* @author Alexei Sorokin <sor.alexei@meowr.ru>
* @author Stephane Berube <chimo@chromic.org>
* @copyright 2011 StatusNet, Inc.
* @copyright 2014 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
defined('GNUSOCIAL') || die();
/**
* @category General
* @copyright 2011 StatusNet, Inc.
* @copyright 2014 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class InboxNoticeStream extends ScopingNoticeStream
{
/**
* Constructor
*
* @param Profile $target Profile to get a stream for
* @param Profile $scoped Currently scoped profile (if null, it is fetched)
*/
public function __construct(Profile $target, Profile $scoped = null)
{
parent::__construct(new CachingNoticeStream(new RawInboxNoticeStream($target), 'profileall:'.$target->getID()), $scoped);
}
}
/**
* Raw stream of notices for the target's inbox
*
* @category General
* @copyright 2011 StatusNet, Inc.
* @copyright 2014 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class RawInboxNoticeStream extends FullNoticeStream
{
protected $target = null;
protected $inbox = null;
/**
* Constructor
*
* @param Profile $target Profile to get a stream for
*/
public function __construct(Profile $target)
{
parent::__construct();
$this->target = $target;
}
/**
* Get IDs in a range
*
* @param int $offset Offset from start
* @param int $limit Limit of number to get
* @param int $since_id Since this notice
* @param int $max_id Before this notice
*
* @return array IDs found
*/
public function getNoticeIds($offset, $limit, $since_id = null, $max_id = null)
{
$notice = new Notice();
$notice->selectAdd();
$notice->selectAdd('id');
// Reply:: is a table of mentions
// Subscription:: is a table of subscriptions (every user is subscribed to themselves)
$notice->_join .= sprintf(
"\n" . <<<'END'
LEFT JOIN (
SELECT notice.id
FROM notice INNER JOIN subscription
ON notice.profile_id = subscription.subscribed
WHERE subscription.subscriber = %1$d
UNION ALL
SELECT notice_id AS id FROM reply WHERE profile_id = %1$d
UNION ALL
SELECT notice_id AS id FROM attention WHERE profile_id = %1$d
UNION ALL
SELECT notice_id AS id FROM group_inbox INNER JOIN group_member USING (group_id)
WHERE group_member.profile_id = %1$d
) AS t1 USING (id)
END,
$this->target->getID()
);
$notice->whereAdd('t1.id IS NOT NULL');
$notice->whereAdd(sprintf(
"notice.created > TIMESTAMP '%s'",
$notice->escape($this->target->created)
));
if (!empty($since_id)) {
$notice->whereAdd('id > ' . $since_id);
}
if (!empty($max_id)) {
$notice->whereAdd('id <= ' . $max_id);
}
$notice->whereAdd('scope <> ' . Notice::MESSAGE_SCOPE);
self::filterVerbs($notice, $this->selectVerbs);
// notice.id will give us even really old posts, which were recently
// imported. For example if a remote instance had problems and just
// managed to post here.
$notice->orderBy('id DESC');
$notice->limit($offset, $limit);
if (!$notice->find()) {
return [];
}
return $notice->fetchAll('id');
}
}