forked from GNUsocial/gnu-social
92 lines
3.4 KiB
PHP
92 lines
3.4 KiB
PHP
<?php
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/**
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* StatusNet, the distributed open-source microblogging tool
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*
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* Wrapper for fetching lists of popular notices.
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*
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* PHP version 5
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*
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* LICENCE: This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category Widget
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @author Brion Vibber <brion@status.net>
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* @copyright 2010 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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if (!defined('STATUSNET') && !defined('LACONICA')) {
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exit(1);
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}
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/**
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* Wrapper for fetching notices ranked according to popularity,
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* broken out so it can be called from multiple actions with
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* less code duplication.
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*/
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class Popularity
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{
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public $limit = NOTICES_PER_PAGE;
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public $offset = 0;
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public $tag = false;
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public $expiry = 600;
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/**
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* Run a cached query to fetch notices, whee!
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*
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* @return Notice
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*/
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function getNotices()
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{
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// @fixme there should be a common func for this
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if (common_config('db', 'type') == 'pgsql') {
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if (!empty($this->tag)) {
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$tag = pg_escape_string($this->tag);
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}
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} else {
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if (!empty($this->tag)) {
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$tag = mysql_escape_string($this->tag);
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}
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}
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$weightexpr = common_sql_weight('fave.modified', common_config('popular', 'dropoff'));
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$cutoff = sprintf("fave.modified > '%s'",
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common_sql_date(time() - common_config('popular', 'cutoff')));
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$qry = "SELECT notice.*, $weightexpr as weight ";
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if(isset($tag)) {
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$qry .= 'FROM notice_tag, notice JOIN fave ON notice.id = fave.notice_id ' .
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"WHERE $cutoff and notice.id = notice_tag.notice_id and '$tag' = notice_tag.tag";
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} else {
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$qry .= 'FROM notice JOIN fave ON notice.id = fave.notice_id ' .
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"WHERE $cutoff";
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}
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$qry .= ' GROUP BY notice.id,notice.profile_id,notice.content,notice.uri,' .
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'notice.rendered,notice.url,notice.created,notice.modified,' .
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'notice.reply_to,notice.is_local,notice.source,notice.conversation, ' .
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'notice.lat,notice.lon,location_id,location_ns,notice.repeat_of';
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$qry .= ' HAVING \'silenced\' NOT IN (SELECT role FROM profile_role WHERE profile_id=notice.profile_id)';
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$qry .= ' ORDER BY weight DESC';
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$offset = $this->offset;
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$limit = $this->limit + 1;
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$qry .= ' LIMIT ' . $limit . ' OFFSET ' . $offset;
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$notice = Memcached_DataObject::cachedQuery('Notice',
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$qry,
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1200);
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return $notice;
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}
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} |