3 * StatusNet, the distributed open-source microblogging tool
5 * Public 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@status.net>
25 * @copyright 2009 StatusNet, Inc.
26 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
27 * @link http://status.net/
30 if (!defined('STATUSNET') && !defined('LACONICA')) {
35 * Public tag cloud section
39 * @author Evan Prodromou <evan@status.net>
40 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
41 * @link http://status.net/
43 class PublicTagCloudSection extends TagCloudSection
45 function __construct($out=null)
47 parent::__construct($out);
52 // TRANS: Title for inbox tag cloud section.
53 return _m('TITLE', 'Trends');
58 $profile = Profile::current();
60 if (empty($profile)) {
61 $keypart = sprintf('Notice:public_tag_cloud:null');
63 $keypart = sprintf('Notice:public_tag_cloud:%d', $profile->id);
66 $tag = Memcached_DataObject::cacheGet($keypart);
70 $stream = new PublicNoticeStream($profile);
72 $ids = $stream->getNoticeIds(0, 500, null, null);
77 $weightexpr = common_sql_weight('notice_tag.created', common_config('tag', 'dropoff'));
78 // @fixme should we use the cutoff too? Doesn't help with indexing per-user.
80 $qry = 'SELECT notice_tag.tag, '.
81 $weightexpr . ' as weight ' .
82 'FROM notice_tag JOIN notice ' .
83 'ON notice_tag.notice_id = notice.id ' .
84 'WHERE notice.id in (' . implode(',', $ids) . ') '.
85 'GROUP BY notice_tag.tag ' .
86 'ORDER BY weight DESC ';
88 $limit = TAGS_PER_SECTION;
91 if (common_config('db','type') == 'pgsql') {
92 $qry .= ' LIMIT ' . $limit . ' OFFSET ' . $offset;
94 $qry .= ' LIMIT ' . $offset . ', ' . $limit;
97 $t = new Notice_tag();
103 while ($t->fetch()) {
108 Memcached_DataObject::cacheSet($keypart, $tag, 60 * 60 * 24);
111 return new ArrayWrapper($tag);