gnu-social/lib/tagnoticestream.php

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<?php
/**
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2011, StatusNet, Inc.
*
* Stream of notices with a given tag
*
* 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); }
/**
* Stream of notices with a given tag
*
* @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/
*/
class TagNoticeStream extends ScopingNoticeStream
{
function __construct($tag, Profile $scoped=null)
{
parent::__construct(new CachingNoticeStream(new RawTagNoticeStream($tag),
'notice_tag:notice_ids:' . Cache::keyize($tag)),
$scoped);
}
}
/**
* Raw stream of notices with a given tag
*
* @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/
*/
class RawTagNoticeStream extends NoticeStream
{
protected $tag;
function __construct($tag)
{
$this->tag = $tag;
}
function getNoticeIds($offset, $limit, $since_id, $max_id)
{
$nt = new Notice_tag();
$nt->tag = $this->tag;
$nt->selectAdd();
$nt->selectAdd('notice_id');
Notice::addWhereSinceId($nt, $since_id, 'notice_id');
Notice::addWhereMaxId($nt, $max_id, 'notice_id');
if (!empty($this->selectVerbs)) {
$nt->joinAdd(array('notice_id', 'notice:id'));
$filter = array_keys(array_filter($this->selectVerbs));
if (!empty($filter)) {
// include verbs in selectVerbs with values that equate to true
$nt->whereAddIn('notice.verb', $filter, 'string');
}
$filter = array_keys(array_filter($this->selectVerbs, function ($v) { return !$v; }));
if (!empty($filter)) {
// exclude verbs in selectVerbs with values that equate to false
$nt->whereAddIn('!notice.verb', $filter, 'string');
}
}
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$nt->orderBy('notice.created DESC, notice_id DESC');
if (!is_null($offset)) {
$nt->limit($offset, $limit);
}
$ids = array();
if ($nt->find()) {
while ($nt->fetch()) {
$ids[] = $nt->notice_id;
}
}
return $ids;
}
}