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[db] add triggers and change value inserts

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This commit is contained in:
Maxime Alves LIRMM@home 2020-07-31 22:50:43 +02:00
commit 46d80b2c43
2 changed files with 47 additions and 18 deletions
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39
db/pyheatpump.sql
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@ -10,7 +10,7 @@ CREATE TABLE IF NOT EXISTS variable (
type CHAR(1) NOT NULL,
address INT NOT NULL,
unit VARCHAR(5) NULL,
last_update DATE NULL,
last_update INT NULL,
FOREIGN KEY (type) REFERENCES var_type(slabel)
@ -21,7 +21,7 @@ CREATE TABLE IF NOT EXISTS variable (
CREATE TABLE IF NOT EXISTS var_value (
type CHAR(1) NOT NULL,
address INT NOT NULL,
time DATE DEFAULT CURRENT_TIMESTAMP,
time INT DEFAULT CURRENT_TIMESTAMP,
value INT NOT NULL,
FOREIGN KEY (type) REFERENCES variable(type)
@ -32,8 +32,37 @@ CREATE TABLE IF NOT EXISTS var_value (
);
INSERT INTO var_type (slabel, label, type, start_address, end_address) VALUES (
'A', 'Analog', 'float', 1, 500);
'A', 'Analog', 'float', 1, (1 + 500));
INSERT INTO var_type (slabel, label, type, start_address, end_address) VALUES (
'I', 'Integer', 'int', 5002, 6252);
'I', 'Integer', 'int', 5002, (5002 + 500));
INSERT INTO var_type (slabel, label, type, start_address, end_address) VALUES (
'D', 'Digital', 'boolean', 1, 1000);
'D', 'Digital', 'boolean', 1, (1 + 1000));
CREATE TRIGGER variable_insert BEFORE INSERT ON var_value
FOR EACH ROW
WHEN
NOT EXISTS (
SELECT MAX(time) FROM var_value
WHERE
NEW.type = type
AND
NEW.address = address
AND
NEW.value = value
)
BEGIN
INSERT INTO var_value
(type, address, value)
VALUES (NEW.type, NEW.address, NEW.value);
END;
CREATE TRIGGER variable_last_update AFTER INSERT ON var_value
FOR EACH ROW
BEGIN
UPDATE variable
SET last_update = NEW.time
WHERE
type = NEW.type
AND
address = NEW.address;
END;

26
db/test_variable_values.sql
View file

@ -1,13 +1,13 @@
INSERT INTO var_value (type, address, value) VALUES
('A', 10, 42),
('A', 11, 24),
('A', 10, 20),
('A', 10, 0),
('I', 5010, 42),
('I', 5011, 24),
('I', 5010, 20),
('I', 5010, 0),
('D', 10, 1),
('D', 11, 1),
('D', 10, 1),
('D', 10, 0);
INSERT INTO var_value (type, address, value, time) VALUES
('A', 10, 42, strftime('%s', 'now')),
('A', 11, 24, strftime('%s', datetime('now', '-1 hours'))),
('A', 10, 20, strftime('%s', datetime('now', '-1 days'))),
('A', 10, 0, strftime('%s', datetime('now', '-2 days'))),
('I', 5010, 42, strftime('%s', datetime('now'))),
('I', 5011, 24, strftime('%s', datetime('now'))),
('I', 5010, 20, strftime('%s', datetime('now', '-1 hours'))),
('I', 5010, 0, strftime('%s', datetime('now', '-2 days'))),
('D', 10, 1, strftime('%s', datetime('now'))),
('D', 11, 1, strftime('%s', datetime('now'))),
('D', 10, 1, strftime('%s', datetime('now', '-1 days'))),
('D', 10, 0, strftime('%s', datetime('now', '-2 days')));