/** * Reads cache entry. * * @param string $key Cache key name * @param boolean $nostore Enable to skip in-memory store * * @return mixed Cached value */ private function read_record($key, $nostore = false) { if (!$this->db) { return null; } if ($this->type != 'db') { $this->load_index(); // Consistency check (#1490390) if (!in_array($key, $this->index)) { // we always check if the key exist in the index // to have data in consistent state. Keeping the index consistent // is needed for keys delete operation when we delete all keys or by prefix. } else { $ckey = $this->ckey($key); if ($this->type == 'memcache') { $data = $this->db->get($ckey); } else { if ($this->type == 'apc') { $data = apc_fetch($ckey); } } if ($this->debug) { $this->debug('get', $ckey, $data); } } if ($data !== false) { $md5sum = md5($data); $data = $this->unserialize($data); if ($nostore) { return $data; } $this->cache_sums[$key] = $md5sum; $this->cache[$key] = $data; } else { $this->cache[$key] = null; } } else { $sql_result = $this->db->query("SELECT `data`, `cache_key` FROM {$this->table}" . " WHERE `cache_key` = ?", $this->prefix . '.' . $key); if ($sql_arr = $this->db->fetch_assoc($sql_result)) { if (strlen($sql_arr['data']) > 0) { $md5sum = md5($sql_arr['data']); $data = $this->unserialize($sql_arr['data']); } $this->db->reset(); if ($nostore) { return $data; } $this->cache[$key] = $data; $this->cache_sums[$key] = $md5sum; } else { $this->cache[$key] = null; } } return $this->cache[$key]; }
/** * Returns list of messages (headers). See rcube_imap::fetch_headers(). * * @param string $mailbox Folder name * @param array $msgs Message UIDs * * @return array The list of messages (rcube_message_header) indexed by UID */ function get_messages($mailbox, $msgs = array()) { if (empty($msgs)) { return array(); } $result = array(); if ($this->mode & self::MODE_MESSAGE) { // Fetch messages from cache $sql_result = $this->db->query("SELECT `uid`, `data`, `flags`" . " FROM {$this->messages_table}" . " WHERE `user_id` = ?" . " AND `mailbox` = ?" . " AND `uid` IN (" . $this->db->array2list($msgs, 'integer') . ")", $this->userid, $mailbox); $msgs = array_flip($msgs); while ($sql_arr = $this->db->fetch_assoc($sql_result)) { $uid = intval($sql_arr['uid']); $result[$uid] = $this->build_message($sql_arr); if (!empty($result[$uid])) { // save memory, we don't need message body here (?) $result[$uid]->body = null; unset($msgs[$uid]); } } $this->db->reset(); $msgs = array_flip($msgs); } // Fetch not found messages from IMAP server if (!empty($msgs)) { $messages = $this->imap->fetch_headers($mailbox, $msgs, false, true); // Insert to DB and add to result list if (!empty($messages)) { foreach ($messages as $msg) { if ($this->mode & self::MODE_MESSAGE) { $this->add_message($mailbox, $msg, !array_key_exists($msg->uid, $result)); } $result[$msg->uid] = $msg; } } } return $result; }