fix mysql

2 files changed, 106 insertions, 0 deletions

diff --git a/db/mapperfactory.php b/db/mapperfactory.php
new file mode 100644
index 000000000..50dfa1d9b
--- /dev/null
+++ b/db/mapperfactory.php
@@ -0,0 +1,40 @@
+<?php
+/**
+ * ownCloud - News
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later. See the COPYING file.
+ *
+ * @author Alessandro Cosentino <cosenal@gmail.com>
+ * @author Bernhard Posselt <dev@bernhard-posselt.com>
+ * @copyright Alessandro Cosentino 2012
+ * @copyright Bernhard Posselt 2012, 2014
+ */
+
+namespace OCA\News\Db;
+
+use \OCP\IDb;
+use \OCA\News\Db\Mysql\ItemMapper as MysqlItemMapper;
+
+class MapperFactory {
+
+	private $dbType;
+	private $db;
+
+	public function __construct($dbType, IDb $db) {
+		$this->dbType = $dbType;
+		$this->db = $db;
+	}
+
+
+	public function getItemMapper() {
+		switch($this->dbType) {
+			case 'mysql':
+				return new MysqlItemMapper($this->db);
+			default:
+				return new ItemMapper($this->db);
+		}
+	}
+
+
+}
diff --git a/db/mysql/itemmapper.php b/db/mysql/itemmapper.php
new file mode 100644
index 000000000..c58036350
--- /dev/null
+++ b/db/mysql/itemmapper.php
@@ -0,0 +1,66 @@
+<?php
+/**
+ * ownCloud - News
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later. See the COPYING file.
+ *
+ * @author Alessandro Cosentino <cosenal@gmail.com>
+ * @author Bernhard Posselt <dev@bernhard-posselt.com>
+ * @copyright Alessandro Cosentino 2012
+ * @copyright Bernhard Posselt 2012, 2014
+ */
+
+namespace OCA\News\Db\Mysql;
+
+use \OCP\IDb;
+
+use \OCA\News\Db\StatusFlag;
+
+
+class ItemMapper extends \OCA\News\Db\ItemMapper {
+
+    public function __construct(IDb $db){
+        parent::__construct($db);
+    }
+
+
+    /**
+     * 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(*) - `feeds`.`articles_per_update`) AS `size`, ' .
+        '`feeds`.`id` AS `feed_id`, `feeds`.`articles_per_update` ' .
+            'FROM `*PREFIX*news_items` `items` ' .
+            'JOIN `*PREFIX*news_feeds` `feeds` ' .
+                'ON `feeds`.`id` = `items`.`feed_id` ' .
+                'AND NOT ((`items`.`status` & ?) > 0) ' .
+            'GROUP BY `feeds`.`id`, `feeds`.`articles_per_update` ' .
+            'HAVING COUNT(*) > ?';
+        $params = [$status, $threshold];
+        $result = $this->execute($sql, $params);
+
+        while($row = $result->fetch()) {
+
+            $size = (int) $row['size'];
+            $limit = $size - $threshold;
+
+            if($limit > 0) {
+                $params = [$status, $row['feed_id'], $limit];
+
+                $sql = 'DELETE FROM `*PREFIX*news_items` ' .
+                    'WHERE NOT ((`status` & ?) > 0) ' .
+                    'AND `feed_id` = ? ' .
+                    'ORDER BY `id` ASC ' .
+                    'LIMIT ?';
+
+                $this->execute($sql, $params);
+            }
+        }
+
+    }
+
+
+}