X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=sql%2Ftransactions.cl;fp=sql%2Ftransactions.cl;h=0000000000000000000000000000000000000000;hb=7d50938ba2db52a713498e49aa1679deae6f0b6b;hp=c95e8c307501fd368049b48623af48401658b242;hpb=998937376fa6f9ce29bd3c7954fb0ebca91c37d7;p=clsql.git

diff --git a/sql/transactions.cl b/sql/transactions.cl
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--- a/sql/transactions.cl
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-;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
-;;;; *************************************************************************
-;;;; FILE IDENTIFICATION
-;;;;
-;;;; Name:          transactions.cl
-;;;; Purpose:       Transaction support
-;;;; Programmers:   Marc Battyani
-;;;; Date Started:  Apr 2002
-;;;;
-;;;; $Id: transactions.cl,v 1.7 2002/09/17 17:16:43 kevin Exp $
-;;;;
-;;;; This file, part of CLSQL, is Copyright (c) 2002 by Kevin M. Rosenberg
-;;;;
-;;;; CLSQL users are granted the rights to distribute and use this software
-;;;; as governed by the terms of the Lisp Lesser GNU Public License
-;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
-;;;; *************************************************************************
-
-(declaim (optimize (debug 3) (speed 3) (safety 1) (compilation-speed 0)))
-(in-package :clsql-sys)
-
-;; I removed the USQL transaction stuff to put a smaller, lighter one (MB)
-
-(defclass transaction ()
-  ((commit-hooks :initform () :accessor commit-hooks)
-   (rollback-hooks :initform () :accessor rollback-hooks)
-   (status :initform nil :accessor status))) ;can be nil :rolled-back or :commited
-
-(defmethod database-start-transaction ((database closed-database))
-  (error 'clsql-closed-database-error database))
-
-(defmethod database-start-transaction (database)
-  (unless (transaction database)
-    (setf (transaction database) (make-instance 'transaction)))
-  (when (= (incf (transaction-level database)) 1)
-    (let ((transaction (transaction database)))
-      (setf (commit-hooks transaction) nil
-	    (rollback-hooks transaction) nil
-	    (status transaction) nil)
-      (execute-command "BEGIN" :database database))))
-
-(defmethod database-end-transaction ((database closed-database))
-  (error 'clsql-closed-database-error database))
-
-(defmethod database-end-transaction (database)
-  (if (> (transaction-level database) 0)
-    (when (zerop (decf (transaction-level database)))
-      (let ((transaction (transaction database)))
-	(if (eq (status transaction) :commited)
-	  (progn
-	    (execute-command "COMMIT" :database database)
-	    (map nil #'funcall (commit-hooks transaction)))
-	  (unwind-protect ;status is not :commited
-	       (execute-command "ROLLBACK" :database database)
-	    (map nil #'funcall (rollback-hooks transaction))))))
-    (warn "Continue without commit."
-	  'clsql-simple-error
-	  :format-control "Cannot commit transaction against ~A because there is no transaction in progress."
-	  :format-arguments (list database))))
-
-(defun rollback-transaction (database)
-  (when (and (transaction database)(not (status (transaction database))))
-    (setf (status (transaction database)) :rolled-back)))
-
-(defun commit-transaction (database)
-  (when (and (transaction database)(not (status (transaction database))))
-    (setf (status (transaction database)) :commited)))
-
-(defun add-transaction-commit-hook (database commit-hook)
-  (when (transaction database)
-    (push commit-hook (commit-hooks (transaction database)))))
-
-(defun add-transaction-rollback-hook (database rollback-hook)
-  (when (transaction database)
-    (push rollback-hook (rollback-hooks (transaction database)))))
-
-(defmacro with-transaction ((&key (database '*default-database*)) &rest body)
-  (let ((db (gensym "db-")))
-    `(let ((,db ,database))
-      (unwind-protect
-	   (progn
-	     (database-start-transaction ,db)
-	     ,@body
-	     (commit-transaction ,db))
-	(database-end-transaction ,db)))))