diff options
Diffstat (limited to 'db/postgres')
-rw-r--r-- | db/postgres/itemmapper.php | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/db/postgres/itemmapper.php b/db/postgres/itemmapper.php new file mode 100644 index 000000000..ddf83ae10 --- /dev/null +++ b/db/postgres/itemmapper.php @@ -0,0 +1,80 @@ +<?php +/** +* ownCloud - News app +* +* @author Alessandro Cosentino +* @author Bernhard Posselt +* @copyright 2012 Alessandro Cosentino cosenal@gmail.com +* @copyright 2012 Bernhard Posselt dev@bernhard-posselt.com +* +* This library is free software; you can redistribute it and/or +* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE +* License as published by the Free Software Foundation; either +* version 3 of the License, or any later version. +* +* This library 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 library. If not, see <http://www.gnu.org/licenses/>. +* +*/ + +namespace OCA\News\Db\Postgres; + +use \OCA\AppFramework\Db\DoesNotExistException; +use \OCA\AppFramework\Db\MultipleObjectsReturnedException; +use \OCA\AppFramework\Db\Mapper; +use \OCA\AppFramework\Core\API; + +use \OCA\News\Db\StatusFlag; + + +class ItemMapper extends \OCA\News\Db\ItemMapper { + + public function __construct(API $api){ + parent::__construct($api); + } + + + /** + * Delete all items for feeds that have over $threshold unread and not + * starred items + */ + public function deleteReadOlderThanThreshold($threshold){ + $status = StatusFlag::STARRED | StatusFlag::UNREAD; + $sql = 'SELECT COUNT(*) `size`, `feed_id` ' . + 'FROM `*PREFIX*news_items` ' . + 'WHERE NOT ((`status` & ?) > 0) ' . + 'GROUP BY `feed_id` ' . + 'HAVING COUNT(*) > ?'; + $params = array($status, $threshold); + $result = $this->execute($sql, $params); + + while($row = $result->fetchRow()) { + + $size = (int) $row['size']; + $limit = $size - $threshold; + + if($limit > 0) { + $params = array($status, $row['feed_id'], $limit); + + $sql = 'DELETE FROM `*PREFIX*news_items` ' . + 'WHERE `id` IN (' . + 'SELECT `id` FROM `*PREFIX*news_items` ' . + 'WHERE NOT ((`status` & ?) > 0) ' . + 'AND `feed_id` = ? ' . + 'ORDER BY `id` ASC ' . + 'LIMIT ?' . + ')'; + + $this->execute($sql, $params); + } + } + + } + + +}
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