adding begin end dates to instructions

sails/roles/database/files/triggers-sessions-integrity-constraints.sql

@@ -89,7 +89,9 @@ thisTrigger: BEGIN
 		NOW(3)
 		)
 	ON DUPLICATE KEY UPDATE  id_stu=idstu, id_sup=idsup, id_ws=NEW.id_ws, id_opentry=NEW.id;
+
 END;;
+
 --
 -- It deletes current try for a given session
 DROP PROCEDURE IF EXISTS deleteOpenTry;
@@ -117,6 +119,7 @@ AFTER INSERT ON working_session
 FOR EACH ROW
 thisTrigger: BEGIN
 	DECLARE idstu INT;
+	DECLARE ins_begin DATE;
 
   IF ((@TRIGGER_CHECKS = FALSE)
       OR (@TRIGGER_AFTER_INSERT_CHECKS = FALSE))
@@ -125,9 +128,25 @@ thisTrigger: BEGIN
     LEAVE thisTrigger;
   END IF;
 
-	UPDATE 	instruction
-	SET    	status='started'
-	WHERE 	id=new.id_ins;
+	SELECT begin INTO ins_begin
+	FROM instruction
+	WHERE id = NEW.id_ins
+
+	IF (ins_begin IS NULL) THEN
+		UPDATE instruction
+		SET
+			begin = NOW(3),
+			end = NOW(3)
+		WHERE
+			id = NEW.id_ins
+	END IF;
+
+	UPDATE instruction
+	SET
+		status='started',
+		end = NOW(3)
+	WHERE
+		id = NEW.id_ins;
 
 	INSERT INTO try(`id_ws`)
 	VALUES  (new.id);
@@ -150,6 +169,16 @@ thisTrigger: BEGIN
     LEAVE thisTrigger;
   END IF;
 
+	-- end date for related instruction is updated
+	IF (OLD.end < NEW.end) THEN
+		UPDATE instruction
+		SET
+			end = NEW.end
+		WHERE
+			id = NEW.id_ins
+	END IF;
+
+	-- remove open try
   IF ((old.end IS NULL) and (new.end IS NOT NULL)) THEN
     CALL deleteOpenTry(new.id);
   END IF;
@@ -335,6 +364,8 @@ thisTrigger: BEGIN
     WHERE id = NEW.id_ws;
   END IF;
 
+
+
 END;;