<?php /** * StatusNet, the distributed open-source microblogging tool * * Wrapper for fetching lists of popular notices. * * PHP version 5 * * LICENCE: 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 Widget * @package StatusNet * @author Evan Prodromou <evan@status.net> * @author Brion Vibber <brion@status.net> * @copyright 2010 StatusNet, Inc. * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0 * @link http://status.net/ */ if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); } /** * Wrapper for fetching notices ranked according to popularity, * broken out so it can be called from multiple actions with * less code duplication. */ class Popularity { public $limit = NOTICES_PER_PAGE; public $offset = 0; public $tag = false; public $expiry = 600; /** * Run a cached query to fetch notices, whee! * * @return Notice */ function getNotices() { // @fixme there should be a common func for this if (common_config('db', 'type') == 'pgsql') { if (!empty($this->tag)) { $tag = pg_escape_string($this->tag); } } else { if (!empty($this->tag)) { $tag = mysql_escape_string($this->tag); } } $weightexpr = common_sql_weight('fave.modified', common_config('popular', 'dropoff')); $cutoff = sprintf("fave.modified > '%s'", common_sql_date(time() - common_config('popular', 'cutoff'))); $qry = "SELECT notice.*, $weightexpr as weight "; if(isset($tag)) { $qry .= 'FROM notice_tag, notice JOIN fave ON notice.id = fave.notice_id ' . "WHERE $cutoff and notice.id = notice_tag.notice_id and '$tag' = notice_tag.tag"; } else { $qry .= 'FROM notice JOIN fave ON notice.id = fave.notice_id ' . "WHERE $cutoff"; } $qry .= ' GROUP BY notice.id,notice.profile_id,notice.content,notice.uri,' . 'notice.rendered,notice.url,notice.created,notice.modified,' . 'notice.reply_to,notice.is_local,notice.source,notice.conversation, ' . 'notice.lat,notice.lon,location_id,location_ns,notice.repeat_of'; $qry .= ' HAVING \'silenced\' NOT IN (SELECT role FROM profile_role WHERE profile_id=notice.profile_id)'; $qry .= ' ORDER BY weight DESC'; $offset = $this->offset; $limit = $this->limit + 1; $qry .= ' LIMIT ' . $limit . ' OFFSET ' . $offset; $notice = Memcached_DataObject::cachedQuery('Notice', $qry, 1200); return $notice; } }