_getValidator example

            }

            /** * Load all the validator classes and add them to the chain. */
            if (!isset($validatorRule[self::VALIDATOR_CHAIN])) {
                $validatorRule[self::VALIDATOR_CHAIN] = new Zend_Validate();

                foreach ($validatorList as $key => $validator) {
                    if (is_string($validator) || is_array($validator)) {
                        $validator = $this->_getValidator($validator);
                    }

                    if (isset($validatorRule[self::MESSAGES][$key])) {
                        $value = $validatorRule[self::MESSAGES][$key];
                        if (is_array($value)) {
                            $validator->setMessages($value);
                        } else {
                            $validator->setMessage($value);
                        }

                        if ($validator instanceof Zend_Validate_NotEmpty) {