(let ((table-name (%sequence-name-to-table sequence-name)))
(database-execute-command
(concatenate 'string "CREATE TABLE " table-name
- " (id int NOT NULL PRIMARY KEY AUTO_INCREMENT)")
+ " (last_value int NOT NULL PRIMARY KEY, increment_by int, min_value int, is_called char(1))")
database)
(database-execute-command
(concatenate 'string "INSERT INTO " table-name
- " VALUES (0)")
+ " VALUES (1,1,1,'f')")
database)))
(defmethod database-drop-sequence (sequence-name
(position integer)
(database aodbc-database))
(database-execute-command
- (format nil "UPDATE ~A SET id=~A" (%sequence-name-to-table sequence-name)
+ (format nil "UPDATE ~A SET last-value=~A"
+ (%sequence-name-to-table sequence-name)
position)
database)
position)
(defmethod database-sequence-next (sequence-name (database aodbc-database))
- (warn "Not implemented."))
-
+ (without-interrupts
+ (let* ((table-name (%sequence-name-to-table sequence-name))
+ (tuple
+ (car (database-query
+ (concatenate 'string "SELECT last_value,is_called FROM "
+ table-name)
+ database
+ :auto))))
+ (cond
+ ((char-equal (schar (second tuple) 0) #\f)
+ (database-execute-command
+ (format nil "UPDATE ~A SET is_called='t'" table-name)
+ database)
+ (car tuple))
+ (t
+ (let ((new-pos (1+ (car tuple))))
+ (database-execute-command
+ (format nil "UPDATE ~A SET last_value=~D" table-name new-pos)
+ database)
+ new-pos))))))
+
(defmethod database-sequence-last (sequence-name (database aodbc-database))
- (declare (ignore sequence-name)))
+ (without-interrupts
+ (caar (database-query
+ (concatenate 'string "SELECT last_value FROM "
+ (%sequence-name-to-table sequence-name))
+ database
+ :auto))))
(defmethod database-create (connection-spec (type (eql :aodbc)))
(warn "Not implemented."))