;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
;;;; *************************************************************************
;;;;
-;;;; $Id$
-;;;;
;;;; Transaction support
;;;;
;;;; This file is part of CLSQL.
((commit-hooks :initform () :accessor commit-hooks)
(rollback-hooks :initform () :accessor rollback-hooks)
(previous-autocommit :initarg :previous-autocommit
- :reader previous-autocommit)
+ :reader previous-autocommit)
(status :initform nil :accessor transaction-status
- :documentation "nil or :committed")))
+ :documentation "nil or :committed")))
-(defun add-transaction-commit-hook (commit-hook &key
+(defun add-transaction-commit-hook (commit-hook &key
(database *default-database*))
"Adds COMMIT-HOOK, which should a designator for a function
with no required arguments, to the list of hooks run when COMMIT
(when (transaction database)
(push commit-hook (commit-hooks (transaction database)))))
-(defun add-transaction-rollback-hook (rollback-hook
+(defun add-transaction-rollback-hook (rollback-hook
&key (database *default-database*))
"Adds ROLLBACK-HOOK, which should a designator for a function
with no required arguments, to the list of hooks run when ROLLBACK
(defmethod database-start-transaction ((database database))
(unless (transaction database)
- (setf (transaction database)
- (make-instance 'transaction :previous-autocommit
- (database-autocommit database))))
+ (setf (transaction database)
+ (make-instance 'transaction :previous-autocommit
+ (database-autocommit database))))
(setf (database-autocommit database) nil)
- (when (= (incf (transaction-level database) 1))
+ (when (= (incf (transaction-level database)) 1)
(let ((transaction (transaction database)))
(setf (commit-hooks transaction) nil
(rollback-hooks transaction) nil
(transaction-status transaction) nil)
- (unless (eq :oracle (database-underlying-type database))
- (execute-command "BEGIN" :database database)))))
+ (case (database-underlying-type database)
+ (:oracle nil)
+ (:mssql (execute-command "BEGIN TRANSACTION" :database database))
+ (t (execute-command "BEGIN" :database database))))))
+;;ODBC should potentially be using it's scheme for transactions:
+;; turn off autocommit for begin. then use sqlendtran (or maybe sqltransact)
+;; whatever is appropriate for this version of odbc.
(defmethod database-commit-transaction ((database database))
(with-slots (transaction transaction-level autocommit) database
(if (plusp transaction-level)
- (when (zerop (decf transaction-level))
- (execute-command "COMMIT" :database database)
- (setf autocommit (previous-autocommit transaction))
- (map nil #'funcall (commit-hooks transaction)))
+ (if (zerop (decf transaction-level))
+ (progn
+ (case (database-underlying-type database)
+ (:mssql (execute-command "COMMIT TRANSACTION" :database database))
+ (t (execute-command "COMMIT" :database database)))
+ (setf autocommit (previous-autocommit transaction))
+ (map nil #'funcall (commit-hooks transaction)))
+ (setf (transaction-status (transaction database)) nil))
(warn 'sql-warning
:message
- (format nil "Cannot commit transaction against ~A because there is no transaction in progress."
- database)))))
+ (format nil "Cannot commit transaction against ~A because there is no transaction in progress."
+ database)))))
(defmethod database-abort-transaction ((database database))
(with-slots (transaction transaction-level autocommit) database
(if (plusp transaction-level)
(when (zerop (decf transaction-level))
- (unwind-protect
- (execute-command "ROLLBACK" :database database)
- (setf autocommit (previous-autocommit transaction))
+ (unwind-protect
+ (case (database-underlying-type database)
+ (:mssql (execute-command "ROLLBACK TRANSACTION" :database database))
+ (t (execute-command "ROLLBACK" :database database)))
+ (setf autocommit (previous-autocommit transaction))
(map nil #'funcall (rollback-hooks transaction))))
(warn 'sql-warning
- :message
- (format nil "Cannot abort transaction against ~A because there is no transaction in progress."
- database)))))
+ :message
+ (format nil "Cannot abort transaction against ~A because there is no transaction in progress."
+ database)))))
(defun mark-transaction-committed (database)
(when (and (transaction database)
currently within the scope of a transaction, commits changes made
since the transaction began."
(database-commit-transaction database)
- nil)
+ nil)
(defun rollback (&key (database *default-database*))
"If DATABASE, which defaults to *DEFAULT-DATABASE*, is
currently within the scope of a transaction, rolls back changes
made since the transaction began."
(database-abort-transaction database)
- nil)
+ nil)
(defun start-transaction (&key (database *default-database*))
"Starts a transaction block on DATABASE which defaults to