3 * Laconica, the distributed open-source microblogging tool
5 * Personal tag cloud section
9 * LICENCE: This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU Affero General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Affero General Public License for more details.
19 * You should have received a copy of the GNU Affero General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 * @author Evan Prodromou <evan@controlyourself.ca>
25 * @copyright 2009 Control Yourself, Inc.
26 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
27 * @link http://laconi.ca/
30 if (!defined('LACONICA')) {
35 * Personal tag cloud section
39 * @author Evan Prodromou <evan@controlyourself.ca>
40 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
41 * @link http://laconi.ca/
44 class GroupTagCloudSection extends TagCloudSection
48 function __construct($out=null, $group=null)
50 parent::__construct($out);
51 $this->group = $group;
56 return sprintf(_('Tags in %s group\'s notices'), $this->group->nickname);
61 $qry = 'SELECT notice_tag.tag, '.
62 'sum(exp(-(now() - notice_tag.created)/%s)) as weight ' .
63 'FROM notice_tag JOIN notice ' .
64 'ON notice_tag.notice_id = notice.id ' .
65 'JOIN group_inbox on group_inbox.notice_id = notice.id ' .
66 'WHERE group_inbox.group_id = %d ' .
67 'GROUP BY notice_tag.tag ' .
68 'ORDER BY weight DESC ';
70 $limit = TAGS_PER_SECTION;
73 if (common_config('db','type') == 'pgsql') {
74 $qry .= ' LIMIT ' . $limit . ' OFFSET ' . $offset;
76 $qry .= ' LIMIT ' . $offset . ', ' . $limit;
79 $tag = Memcached_DataObject::cachedQuery('Notice_tag',
81 common_config('tag', 'dropoff'),