gnu-social/lib/noticestream.php

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<?php
/**
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2011, StatusNet, Inc.
*
* A stream of notices
*
* PHP version 5
*
* This program 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.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Stream
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @copyright 2011 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
* @link http://status.net/
*/
if (!defined('GNUSOCIAL')) { exit(1); }
/**
* Class for notice streams
*
* @category Stream
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @copyright 2011 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
* @link http://status.net/
*/
abstract class NoticeStream
{
protected $selectVerbs = array(ActivityVerb::POST => true,
ActivityVerb::DELETE => false);
public function __construct()
{
foreach ($this->selectVerbs as $key=>$val) {
// to avoid database inconsistency issues we select both relative and absolute verbs
$this->selectVerbs[ActivityUtils::resolveUri($key)] = $val;
$this->selectVerbs[ActivityUtils::resolveUri($key, true)] = $val;
}
}
abstract function getNoticeIds($offset, $limit, $since_id, $max_id);
function getNotices($offset, $limit, $sinceId = null, $maxId = null)
{
$ids = $this->getNoticeIds($offset, $limit, $sinceId, $maxId);
$notices = self::getStreamByIds($ids);
return $notices;
}
static function getStreamByIds($ids)
{
return Notice::multiGet('id', $ids);
}
static function filterVerbs(Notice $notice, array $selectVerbs)
{
$filter = array_keys(array_filter($selectVerbs));
if (!empty($filter)) {
// include verbs in selectVerbs with values that equate to true
$notice->whereAddIn('verb', $filter, $notice->columnType('verb'));
}
$filter = array_keys(array_filter($selectVerbs, function ($v) { return !$v; }));
if (!empty($filter)) {
// exclude verbs in selectVerbs with values that equate to false
$notice->whereAddIn('!verb', $filter, $notice->columnType('verb'));
}
unset($filter);
}
}