PKGBUILD/pkg/db/sql/psql/schema.sql

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2019-08-20 19:37:45 +00:00
DROP TABLE IF EXISTS devices CASCADE;
DROP TABLE IF EXISTS sensors CASCADE;
DROP TABLE IF EXISTS humidities CASCADE;
DROP TABLE IF EXISTS pressures CASCADE;
DROP TABLE IF EXISTS temperatures CASCADE;
-- +----------------------------------------+
-- | TABLES |
-- +----------------------------------------+
CREATE TABLE IF NOT EXISTS devices(
device_id CHAR(36) CONSTRAINT pk_devices PRIMARY KEY,
device_name VARCHAR(32) NOT NULL,
device_location VARCHAR(32),
device_last_contact TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP NOT NULL,
creation_date TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
);
CREATE TABLE IF NOT EXISTS sensors (
sensor_id CHAR(36) CONSTRAINT pk_sensors PRIMARY KEY,
sensor_name VARCHAR(32) NOT NULL,
sensor_location VARCHAR(32) NOT NULL,
wire_id VARCHAR(15),
i2c_bus VARCHAR(255),
i2c_address VARCHAR(12),
gpio_number VARCHAR(6),
sensor_model VARCHAR(16) NOT NULL,
sensor_enabled BOOLEAN DEFAULT TRUE NOT NULL,
sensor_last_contact TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP NOT NULL,
device_id CHAR(36),
creation_date TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP NOT NULL
);
CREATE TABLE IF NOT EXISTS humidities (
humidity_id CHAR(36) CONSTRAINT pk_humidities PRIMARY KEY,
humidity_value NUMERIC(9,3) NOT NULL,
humidity_from_date TIMESTAMP WITH TIME ZONE NOT NULL,
humidity_till_date TIMESTAMP WITH TIME ZONE,
sensor_id CHAR(36),
creation_date TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP NOT NULL,
update_date TIMESTAMP WITH TIME ZONE
);
CREATE TABLE IF NOT EXISTS pressures (
pressure_id CHAR(36) CONSTRAINT pk_pressures PRIMARY KEY,
pressure_value NUMERIC(10,3) NOT NULL,
pressure_from_date TIMESTAMP WITH TIME ZONE NOT NULL,
pressure_till_date TIMESTAMP WITH TIME ZONE,
sensor_id CHAR(36),
creation_date TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP NOT NULL,
update_date TIMESTAMP WITH TIME ZONE
);
CREATE TABLE IF NOT EXISTS temperatures (
temperature_id CHAR(36) CONSTRAINT pk_temperatures PRIMARY KEY,
temperature_value NUMERIC(5,3) NOT NULL,
temperature_from_date TIMESTAMP WITH TIME ZONE NOT NULL,
temperature_till_date TIMESTAMP WITH TIME ZONE,
sensor_id CHAR(36),
creation_date TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP NOT NULL,
update_date TIMESTAMP WITH TIME ZONE
);
-- +----------------------------------------+
-- | FOREIGN-KEYS |
-- +----------------------------------------+
ALTER TABLE sensors
ADD FOREIGN KEY (device_id)
REFERENCES devices(device_id)
ON DELETE CASCADE
ON UPDATE CASCADE;
ALTER TABLE humidities
ADD FOREIGN KEY (sensor_id)
REFERENCES sensors(sensor_id)
ON DELETE CASCADE
ON UPDATE CASCADE;
ALTER TABLE pressures
ADD FOREIGN KEY (sensor_id)
REFERENCES sensors(sensor_id)
ON DELETE CASCADE
ON UPDATE CASCADE;
ALTER TABLE temperatures
ADD FOREIGN KEY (sensor_id)
REFERENCES sensors(sensor_id)
ON DELETE CASCADE
ON UPDATE CASCADE;
-- +----------------------------------------+
-- | Trigger-Functions |
-- +----------------------------------------+
CREATE OR REPLACE FUNCTION device_last_contact()
RETURNS trigger AS
$BODY$
BEGIN
UPDATE devices
SET device_last_contact = CURRENT_TIMESTAMP
WHERE device_id = NEW.device_id;
RETURN NEW;
END;
$BODY$ LANGUAGE plpgsql;
CREATE OR REPLACE FUNCTION sensor_last_contact()
RETURNS trigger AS
$BODY$
BEGIN
UPDATE sensors
SET sensor_last_contact = CURRENT_TIMESTAMP,
sensor_enabled = true
WHERE sensor_id = NEW.sensor_id;
RETURN NEW;
END;
$BODY$ LANGUAGE plpgsql;
-- +----------------------------------------+
-- | Trigger |
-- +----------------------------------------+
DROP TRIGGER IF EXISTS ai_humidities ON humidities;
DROP TRIGGER IF EXISTS ai_pressure ON pressures;
DROP TRIGGER IF EXISTS ai_temperatures ON temperatures;
CREATE TRIGGER au_sensors
AFTER UPDATE
ON sensors
FOR EACH ROW
EXECUTE PROCEDURE device_last_contact();
CREATE TRIGGER ai_humidities
AFTER INSERT
ON humidities
FOR EACH ROW
EXECUTE PROCEDURE sensor_last_contact();
CREATE TRIGGER ai_pressures
AFTER INSERT
ON pressures
FOR EACH ROW
EXECUTE PROCEDURE sensor_last_contact();
CREATE TRIGGER ai_temperatures
AFTER INSERT
ON temperatures
FOR EACH ROW
EXECUTE PROCEDURE sensor_last_contact();