protected function _init()
 {
     parent::_init();
     $this->_actions[] = new Kwf_Update_Action_Db_AddField(array('table' => 'kwc_shop_orders', 'field' => 'firstname', 'type' => 'VARCHAR(200)', 'null' => false, 'default' => ''));
     $this->_actions[] = new Kwf_Update_Action_Db_AddField(array('table' => 'kwc_shop_orders', 'field' => 'lastname', 'type' => 'VARCHAR(200)', 'null' => false, 'default' => ''));
     $this->_actions[] = new Kwf_Update_Action_Db_AddField(array('table' => 'kwc_shop_orders', 'field' => 'city', 'type' => 'VARCHAR(200)', 'null' => false, 'default' => ''));
     $this->_actions[] = new Kwf_Update_Action_Db_AddField(array('table' => 'kwc_shop_orders', 'field' => 'email', 'type' => 'VARCHAR(200)', 'null' => false, 'default' => ''));
     $this->_actions[] = new Kwf_Update_Action_Db_AddField(array('table' => 'kwc_shop_orders', 'field' => 'zip', 'type' => 'VARCHAR(50)', 'null' => false, 'default' => ''));
     $this->_actions[] = new Kwf_Update_Action_Db_AddField(array('table' => 'kwc_shop_orders', 'field' => 'payment', 'type' => 'VARCHAR(100)', 'null' => false, 'default' => ''));
     $this->_actions[] = new Kwf_Update_Action_Db_ConvertFieldModel(array('table' => 'kwc_shop_orders', 'fields' => array('firstname', 'lastname', 'payment', 'zip', 'email', 'city')));
 }