static function check_init()
 {
     if (!count(SDB::get_tables_list())) {
         $sql = file_get_contents(BASE . 'conf/simple.' . conf('db.type') . '.sql');
         if (conf('db.type') == 'mysql') {
             $spl = explode(';', $sql);
             foreach ($spl as $part) {
                 $cmd = new SDBCommand($part);
                 $cmd->execute();
             }
         } else {
             $cmd = new SDBCommand($sql);
             $cmd->execute();
         }
         SDB::reset_cached_data();
         $fl = new FileItem();
         $fl->parent_id = 0;
         $fl->name = 's';
         $fl->type = FileItem::Folder;
         $fl->save();
         Initiator::fill_db(S_BASE, $fl->id);
     }
 }
 protected function _init_table()
 {
     if (strlen($this->_db_table)) {
         return;
     }
     $classname = strtolower(get_class($this));
     $tables = SDB::get_tables_list();
     $sclsname = substr($classname, 0, -1);
     if (in_array($classname, $tables)) {
         $this->map_table($classname);
     } elseif (in_array($classname . 's', $tables)) {
         $this->map_table($classname . 's');
     } elseif (in_array($sclsname . 'ies', $tables)) {
         $this->map_table($sclsname . 'ies');
     } elseif (!$this->_fuzzy_find_table($classname, $sclsname, $tables)) {
         throw new Exception("Tables '{$classname}' ('{$classname}s', '{$sclsname}ies') doesn't exists. Use map_table to set table manually.");
     }
 }
<?php

if (!count(SDB::get_tables_list())) {
    $sql = file_get_contents(BASE . '../common/examples.' . conf('db.type') . '.sql');
    if (conf('db.type') == 'mysql') {
        $spl = explode(';', $sql);
        foreach ($spl as $part) {
            $cmd = new SDBCommand($part);
            $cmd->execute();
        }
    } else {
        $cmd = new SDBCommand($sql);
        $cmd->execute();
    }
    SDB::reset_cached_data();
}