DELIMITER $$
CREATE OR REPLACE DEFINER=`root`@`localhost` PROCEDURE `cache`.`cache_calc_unlock`(IN `v_calc` INT)
proc: BEGIN
	DECLARE v_cache_name VARCHAR(50);
	DECLARE v_params VARCHAR(100);

	IF v_calc IS NULL THEN
		LEAVE proc;
	END IF;

	SELECT c.name, ca.params INTO v_cache_name, v_params
		FROM cache c
		JOIN cache_calc ca ON c.id = ca.cache_id
			WHERE ca.id = v_calc;
			
	DELETE FROM cache_calc WHERE id = v_calc;

	IF v_cache_name IS NOT NULL THEN
		DO RELEASE_LOCK(CONCAT_WS('/', v_cache_name, IFNULL(v_params, '')));
	END IF;
END$$
DELIMITER ;