mocha/sql/mysql/001-procedures/mocha_prepare_instance.sql

85 lines
2.7 KiB
SQL

DROP PROCEDURE IF EXISTS mocha_prepare_instance;
CREATE PROCEDURE mocha_prepare_instance
(
IN p_class_inst_id INT,
IN p_inst_id INT,
IN p_class_global_identifier CHAR(32), -- the global identifier of the class of the newly created instance
IN p_global_identifier CHAR(32), -- the desired global identifier for the newly created instance
IN p_user_inst_id INT,
IN p_effective_date DATETIME,
OUT p_assigned_inst_id INT
)
sp: BEGIN
DECLARE p_tenant_id INT;
DECLARE next_inst_id INT;
DECLARE p_class_index INT;
DECLARE z_global_identifier CHAR(32);
DECLARE z_effective_date DATETIME;
SET p_tenant_id = mocha_get_current_tenant();
-- SET p_class_index = (SELECT inst_id FROM mocha_instances WHERE tenant_id = p_tenant_id AND class_id = 1 AND id = p_class_inst_id);
SET p_class_index = p_class_inst_id;
IF p_class_index IS NULL AND NOT p_class_global_identifier IS NULL THEN
SET p_class_index = (SELECT inst_id FROM mocha_instances WHERE tenant_id = p_tenant_id AND id = mocha_get_instance_by_global_identifier(p_class_global_identifier));
END IF;
-- IF p_class_index IS NULL THEN
-- SELECT "cannot create an instance of something that is not a Class" AS error_description;
-- LEAVE sp;
-- END IF;
SET next_inst_id=p_inst_id;
IF p_inst_id IS NULL THEN
SET next_inst_id = mocha_get_next_inst_id(p_class_index);
END IF;
IF p_effective_date IS NULL THEN
SET z_effective_date = NOW();
ELSE
SET z_effective_date = p_effective_date;
END IF;
IF p_global_identifier IS NULL THEN
SET z_global_identifier=mocha_uuid_v4();
ELSE
SET z_global_identifier=p_global_identifier;
END IF;
-- insert record first
INSERT INTO mocha_instances
(tenant_id, class_id, inst_id, global_identifier)
VALUES
(p_tenant_id, p_class_index, next_inst_id, z_global_identifier);
SET p_assigned_inst_id = LAST_INSERT_ID();
-- -- then update relationship: Class.has Instance
-- CALL mocha_assign_relationship
-- (
-- mocha_get_instance_by_key(1, p_class_index),
-- mocha_get_instance_by_global_identifier('7EB41D3C2AE9488483A4E59441BCAEFB'),
-- mocha_get_instance_by_key(p_class_index, next_inst_id),
-- p_user_inst_id,
-- z_effective_date
-- );
-- -- then update relationship: Instance.for Class
-- CALL mocha_assign_relationship
-- (
-- mocha_get_instance_by_key(p_class_index, next_inst_id),
-- mocha_get_instance_by_global_identifier('494D5A6D04BE477B8763E3F57D0DD8C8'),
-- mocha_get_instance_by_key(1, p_class_index),
-- p_user_inst_id,
-- z_effective_date
-- );
END;