DELIMITER $$
CREATE OR REPLACE DEFINER=`root`@`localhost` FUNCTION `srt`.`buffer_isFull`(vBufferFk INT)
	RETURNS tinyint(1)
	NOT DETERMINISTIC
	READS SQL DATA
BEGIN
	
	/**
	 * Comprueba si un buffer está lleno
	 *
	 * @param vBufferFk Identificador de vn.buffer
	 * 
	 */
	
	DECLARE vBufferStock INT;
	DECLARE vIsFull BOOL;

	SELECT COUNT(*) INTO vBufferStock
		FROM srt.expedition e
			LEFT JOIN srt.moving m ON m.expeditionFk = e.id
		WHERE e.bufferFk = vBufferFk
			AND ISNULL(m.id);
		
	SELECT vBufferStock + COUNT(*) INTO vBufferStock
		FROM srt.moving m
			WHERE m.bufferToFk = vBufferFk;
	
	SELECT (vBufferStock >= maxBoxesInBuffer) INTO vIsFull
		FROM srt.config;  
	
	RETURN vIsFull;

END$$
DELIMITER ;