(handler-case
(make-instance 'sqlite-database
:name (database-name-from-spec connection-spec :sqlite)
+ :database-type :sqlite
+ :connection-spec connection-spec
:sqlite-db (sqlite:sqlite-open (first connection-spec)))
(sqlite:sqlite-error (err)
(error 'clsql-connect-error
(string= (subseq table-name 0 11) "_clsql_seq_")
(subseq table-name 11)))
+
(defmethod database-create-sequence (sequence-name
(database sqlite-database))
(let ((table-name (%sequence-name-to-table-name sequence-name)))
(database-execute-command
(concatenate 'string "CREATE TABLE " table-name
- " (id INTEGER PRIMARY KEY)")
+ " (last_value integer PRIMARY KEY, increment_by integer, min_value integer, is_called char(1))")
database)
(database-execute-command
- (format nil "INSERT INTO ~A VALUES (-1)" table-name)
+ (concatenate 'string "INSERT INTO " table-name
+ " VALUES (1,1,1,'f')")
database)))
(defmethod database-drop-sequence (sequence-name
(database sqlite-database))
(database-execute-command
- (concatenate 'string "DROP TABLE "
- (%sequence-name-to-table-name sequence-name))
+ (concatenate 'string "DROP TABLE " (%sequence-name-to-table-name sequence-name))
database))
(defmethod database-list-sequences ((database sqlite-database)
database '())))
(defmethod database-sequence-next (sequence-name (database sqlite-database))
- (let ((table-name (%sequence-name-to-table-name sequence-name)))
- (database-execute-command
- (format nil "UPDATE ~A SET id=(SELECT id FROM ~A)+1"
- table-name table-name)
- database)
- (sqlite:sqlite-last-insert-rowid (sqlite-db database))
- (parse-integer
- (caar (database-query (format nil "SELECT id from ~A" table-name)
- database nil)))))
+ (without-interrupts
+ (let* ((table-name (%sequence-name-to-table-name 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)
+ (parse-integer (car tuple)))
+ (t
+ (let ((new-pos (1+ (parse-integer (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 sqlite-database))
+ (without-interrupts
+ (parse-integer
+ (caar (database-query
+ (concatenate 'string "SELECT last_value FROM "
+ (%sequence-name-to-table-name sequence-name))
+ database
+ :auto)))))
(defmethod database-set-sequence-position (sequence-name
(position integer)
(database sqlite-database))
- (let ((table-name (%sequence-name-to-table-name sequence-name)))
- (database-execute-command
- (format nil "UPDATE ~A SET id=~A" table-name position)
- database)
- (sqlite:sqlite-last-insert-rowid (sqlite-db database))))
-
-(defmethod database-sequence-last (sequence-name (database sqlite-database))
- (declare (ignore sequence-name)))
+ (database-execute-command
+ (format nil "UPDATE ~A SET last_value=~A,is_called='t'"
+ (%sequence-name-to-table-name sequence-name)
+ position)
+ database)
+ position)
(defmethod database-create (connection-spec (type (eql :sqlite)))
(declare (ignore connection-spec))
(defmethod database-probe (connection-spec (type (eql :sqlite)))
(destructuring-bind (name) connection-spec
- ;; TODO: Add a test that this file is a real sqlite database
- (and (probe-file name) t)))
+ ;; TODO: Add a test that this file is a real sqlite database
+ (or (string-equal ":memory:" name)
+ (and (probe-file name) t))))
+