Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(48)

Side by Side Diff: app/sql/transaction.h

Issue 7353026: Move app/sql/* files to sql/ directory. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: rebased Created 9 years, 5 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View unified diff | Download patch | Annotate | Revision Log
« no previous file with comments | « app/sql/statement_unittest.cc ('k') | app/sql/transaction.cc » ('j') | no next file with comments »
Toggle Intra-line Diffs ('i') | Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
OLDNEW
(Empty)
1 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef APP_SQL_TRANSACTION_H_
6 #define APP_SQL_TRANSACTION_H_
7 #pragma once
8
9 #include "base/basictypes.h"
10
11 namespace sql {
12
13 class Connection;
14
15 class Transaction {
16 public:
17 // Creates the scoped transaction object. You MUST call Begin() to begin the
18 // transaction. If you have begun a transaction and not committed it, the
19 // constructor will roll back the transaction. If you want to commit, you
20 // need to manually call Commit before this goes out of scope.
21 explicit Transaction(Connection* connection);
22 ~Transaction();
23
24 // Returns true when there is a transaction that has been successfully begun.
25 bool is_open() const { return is_open_; }
26
27 // Begins the transaction. This uses the default sqlite "deferred" transaction
28 // type, which means that the DB lock is lazily acquired the next time the
29 // database is accessed, not in the begin transaction command.
30 //
31 // Returns false on failure. Note that if this fails, you shouldn't do
32 // anything you expect to be actually transactional, because it won't be!
33 bool Begin();
34
35 // Rolls back the transaction. This will happen automatically if you do
36 // nothing when the transaction goes out of scope.
37 void Rollback();
38
39 // Commits the transaction, returning true on success. This will return
40 // false if sqlite could not commit it, or if another transaction in the
41 // same outermost transaction has been rolled back (which necessitates a
42 // rollback of all transactions in that outermost one).
43 bool Commit();
44
45 private:
46 Connection* connection_;
47
48 // True when the transaction is open, false when it's already been committed
49 // or rolled back.
50 bool is_open_;
51
52 DISALLOW_COPY_AND_ASSIGN(Transaction);
53 };
54
55 } // namespace sql
56
57 #endif // APP_SQL_TRANSACTION_H_
OLDNEW
« no previous file with comments | « app/sql/statement_unittest.cc ('k') | app/sql/transaction.cc » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698