gnu-social/lib/groups/groupnoticestream.php

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<?php
/**
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2011, StatusNet, Inc.
*
* Stream of notices for a group
*
* 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 for a group
*
* @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 GroupNoticeStream extends ScopingNoticeStream
{
var $group;
function __construct($group, Profile $scoped=null)
{
$this->group = $group;
parent::__construct(new CachingNoticeStream(new RawGroupNoticeStream($group),
'user_group:notice_ids:' . $group->id),
$scoped);
}
function getNoticeIds($offset, $limit, $since_id, $max_id)
{
if ($this->impossibleStream()) {
return array();
} else {
return parent::getNoticeIds($offset, $limit, $since_id, $max_id);
}
}
function getNotices($offset, $limit, $sinceId = null, $maxId = null)
{
if ($this->impossibleStream()) {
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return new ArrayWrapper(array());
} else {
return parent::getNotices($offset, $limit, $sinceId, $maxId);
}
}
function impossibleStream()
{
if ($this->group->force_scope &&
(!$this->scoped instanceof Profile || $this->scoped->isMember($this->group))) {
return true;
}
return false;
}
}
/**
* Stream of notices for a group
*
* @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 RawGroupNoticeStream extends NoticeStream
{
protected $group;
function __construct($group)
{
$this->group = $group;
}
function getNoticeIds($offset, $limit, $since_id, $max_id)
{
$inbox = new Group_inbox();
$inbox->group_id = $this->group->id;
$inbox->selectAdd();
$inbox->selectAdd('notice_id');
Notice::addWhereSinceId($inbox, $since_id, 'notice_id');
Notice::addWhereMaxId($inbox, $max_id, 'notice_id');
$inbox->orderBy('created DESC, notice_id DESC');
if (!is_null($offset)) {
$inbox->limit($offset, $limit);
}
$ids = array();
if ($inbox->find()) {
while ($inbox->fetch()) {
$ids[] = $inbox->notice_id;
}
}
return $ids;
}
}