6911e1c797
Consolidated several separate implementations of the same weighting algorithm into common_sql_weight() and fixed some bugs... For MySQL, now using timestampdiff() instead of subtraction for the comparison, so we get sane results when the year doesn't match, and utc_timestamp() rather than now() so we don't get negative ages for recent items with local server timezone. Unknown whether the same problems affect PostgreSQL, but note that it lacks the timestampdiff() SQL function.
88 lines
2.6 KiB
PHP
88 lines
2.6 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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* Personal tag cloud section
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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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* @copyright 2009 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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* Personal tag cloud section
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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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* @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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class PersonalTagCloudSection extends TagCloudSection
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{
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var $user = null;
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function __construct($out=null, $user=null)
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{
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parent::__construct($out);
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$this->user = $user;
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}
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function title()
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{
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return sprintf(_('Tags in %s\'s notices'), $this->user->nickname);
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}
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function getTags()
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{
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$weightexpr = common_sql_weight('notice_tag.created', common_config('tag', 'dropoff'));
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$qry = 'SELECT notice_tag.tag, '.
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$weightexpr . ' as weight ' .
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'FROM notice_tag JOIN notice ' .
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'ON notice_tag.notice_id = notice.id ' .
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'WHERE notice.profile_id = %d ' .
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'GROUP BY notice_tag.tag ' .
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'ORDER BY weight DESC ';
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$limit = TAGS_PER_SECTION;
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$offset = 0;
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if (common_config('db','type') == 'pgsql') {
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$qry .= ' LIMIT ' . $limit . ' OFFSET ' . $offset;
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} else {
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$qry .= ' LIMIT ' . $offset . ', ' . $limit;
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}
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$tag = Memcached_DataObject::cachedQuery('Notice_tag',
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sprintf($qry,
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$this->user->id),
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3600);
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return $tag;
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}
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}
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