Refactored IMAP cache expunge: delegate to storage object; don't rely on deprecated 'enable_caching' config option

git-svn-id: https://svn.roundcube.net/trunk@5898 208e9e7b-5314-0410-a742-e7e81cd9613c

1 files changed, 21 insertions, 0 deletions

diff --git a/roundcubemail/program/include/rcube_imap_cache.php b/roundcubemail/program/include/rcube_imap_cache.php
index 96c49f713..655979de6 100644
--- a/roundcubemail/program/include/rcube_imap_cache.php
+++ b/roundcubemail/program/include/rcube_imap_cache.php
@@ -599,6 +599,27 @@ class rcube_imap_cache
 
 
     /**
+     * Delete cache entries older than TTL
+     *
+     * @param string $ttl  Lifetime of message cache entries
+     */
+    function expunge($ttl)
+    {
+        // get expiration timestamp
+        $ts = get_offset_time($ttl, -1);
+
+        $this->db->query("DELETE FROM ".get_table_name('cache_messages')
+              ." WHERE changed < " . $this->db->fromunixtime($ts));
+
+        $this->db->query("DELETE FROM ".get_table_name('cache_index')
+              ." WHERE changed < " . $this->db->fromunixtime($ts));
+
+        $this->db->query("DELETE FROM ".get_table_name('cache_thread')
+              ." WHERE changed < " . $this->db->fromunixtime($ts));
+    }
+
+
+    /**
      * Fetches index data from database
      */
     private function get_index_row($mailbox)