gnu-social/lib/taggedprofilenoticestream.php

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<?php
/**
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2011, StatusNet, Inc.
*
* Stream of notices by a profile 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 profile and 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 TaggedProfileNoticeStream extends ScopingNoticeStream
{
function __construct($profile, $tag, Profile $scoped=null)
{
parent::__construct(new CachingNoticeStream(new RawTaggedProfileNoticeStream($profile, $tag),
'profile:notice_ids_tagged:'.$profile->id.':'.Cache::keyize($tag)),
$scoped);
}
}
/**
* Raw stream of notices with a given profile and 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 RawTaggedProfileNoticeStream extends NoticeStream
{
protected $profile;
protected $tag;
function __construct($profile, $tag)
{
$this->profile = $profile;
$this->tag = $tag;
}
function getNoticeIds($offset, $limit, $since_id, $max_id)
{
// XXX It would be nice to do this without a join
// (necessary to do it efficiently on accounts with long history)
$notice = new Notice();
$query =
"select id from notice join notice_tag on id=notice_id where tag='".
$notice->escape($this->tag) .
"' and profile_id=" . intval($this->profile->id);
$since = Notice::whereSinceId($since_id, 'id', 'notice.created');
if ($since) {
$query .= " and ($since)";
}
$max = Notice::whereMaxId($max_id, 'id', 'notice.created');
if ($max) {
$query .= " and ($max)";
}
$query .= ' order by notice.created DESC, id DESC';
if (!is_null($offset)) {
$query .= " LIMIT " . intval($limit) . " OFFSET " . intval($offset);
}
$notice->query($query);
$ids = array();
while ($notice->fetch()) {
$ids[] = $notice->id;
}
return $ids;
}
}