1 files changed, 0 insertions, 123 deletions
diff --git a/lib/classes/StudipDbCache.class.php b/lib/classes/StudipDbCache.class.php
deleted file mode 100644
index 865825e..0000000
--- a/lib/classes/StudipDbCache.class.php
+++ /dev/null
@@ -1,123 +0,0 @@
-<?php
-/**
- * StudipCache implementation using database table
- *
- * @package     studip
- * @subpackage  cache
- *
- * @author    Elmar Ludwig <elmar.ludwig@uos.de>
- */
-class StudipDbCache implements StudipCache
-{
-
-    /**
-     * @return string A translateable display name for this cache class.
-     */
-    public static function getDisplayName(): string
-    {
-        return _('Datenbank');
-    }
-
-    /**
-     * Expire item from the cache.
-     *
-     * @param string $arg a single key
-     */
-    public function expire($arg)
-    {
-        $db = DBManager::get();
-
-        $stmt = $db->prepare('DELETE FROM cache WHERE cache_key = ?');
-        $stmt->execute([$arg]);
-    }
-
-    /**
-     * Expire all items from the cache.
-     */
-    public function flush()
-    {
-        $db = DBManager::get();
-
-        $db->exec('TRUNCATE TABLE cache');
-    }
-
-    /**
-     * Delete all expired items from the cache.
-     */
-    public function purge()
-    {
-        $db = DBManager::get();
-
-        $stmt = $db->prepare('DELETE FROM cache WHERE expires < ?');
-        $stmt->execute([time()]);
-    }
-
-    /**
-     * Retrieve item from the server.
-     *
-     * @param string $arg a single key
-     *
-     * @return mixed    the previously stored data if an item with such a key
-     *                  exists on the server or FALSE on failure.
-     */
-    public function read($arg)
-    {
-        $db = DBManager::get();
-
-        $stmt = $db->prepare('SELECT content FROM cache WHERE cache_key = ? AND expires > ?');
-        $stmt->execute([$arg, time()]);
-        $result = $stmt->fetchColumn();
-
-        return $result !== false ? unserialize($result) : false;
-    }
-
-    /**
-     * Store data at the server.
-     *
-     * @param string $name     the item's key.
-     * @param mixed  $content  the item's content (will be serialized if necessary).
-     * @param int    $expired  the item's expiry time in seconds. Optional, defaults to 12h.
-     *
-     * @return bool     returns TRUE on success or FALSE on failure.
-     */
-    public function write($name, $content, $expires = self::DEFAULT_EXPIRATION)
-    {
-        $db = DBManager::get();
-
-        $stmt = $db->prepare('REPLACE INTO cache VALUES(?, ?, ?)');
-        return $stmt->execute([$name, serialize($content), time() + $expires]);
-    }
-
-    /**
-     * Return statistics.
-     *
-     * @see StudipCache::getStats()
-     *
-     * @return array|array[]
-     */
-    public function getStats(): array
-    {
-        return [
-            __CLASS__ => [
-                'name' => _('Anzahl Einträge'),
-                'value' => DBManager::get()->fetchColumn("SELECT COUNT(*) FROM `cache`")
-            ]
-        ];
-    }
-
-    /**
-     * Return the Vue component name and props that handle configuration.
-     *
-     * @see StudipCache::getConfig()
-     *
-     * @return array
-     */
-    public static function getConfig(): array
-    {
-        return [
-            'component' => null,
-            'props' => []
-        ];
-    }
-
-}