Moved project directories and files to an empty local repo

Database/triggers.sql

@@ -0,0 +1,38 @@
+/*
+ * Trigger declarations for hpr_hpr
+ *
+ */
+
+--
+-- Table 'log' to hold details of certain background activities invoked by
+-- stored procedures and triggers
+--
+DROP TABLE IF EXISTS log;
+CREATE TABLE log (
+    id int(5) NOT NULL AUTO_INCREMENT,
+    stamp timestamp DEFAULT now(),
+    message text NOT NULL,
+    PRIMARY KEY (id)
+);
+
+--
+-- When an episode is added to the eps table check whether there is an
+-- entry in the reservations table with the same id. If there is, delete
+-- it. Log the deletion in the log table.
+--
+DROP TRIGGER IF EXISTS check_reservations;
+DELIMITER $$
+CREATE TRIGGER check_reservations BEFORE INSERT ON eps
+FOR EACH ROW
+BEGIN
+    IF EXISTS(SELECT id FROM reservations WHERE id = NEW.id) THEN
+	DELETE FROM reservations WHERE id = NEW.id;
+	INSERT INTO log (message) VALUES(concat('DELETE FROM reservations WHERE id = ',NEW.id));
+    END IF;
+END;
+$$
+DELIMITER ;
+
+/*
+vim: syntax=sql ai tw=75:
+*/