1// Copyright 2013 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 SYNC_SYNCABLE_SYNCABLE_MODEL_NEUTRAL_WRITE_TRANSACTION_H_
6#define SYNC_SYNCABLE_SYNCABLE_MODEL_NEUTRAL_WRITE_TRANSACTION_H_
7
8#include "sync/base/sync_export.h"
9#include "sync/syncable/metahandle_set.h"
10#include "sync/syncable/syncable_base_write_transaction.h"
11
12namespace syncer {
13namespace syncable {
14
15// A transaction used to instantiate Entries or ModelNeutralMutableEntries.
16//
17// This allows it to be used when making changes to sync entity properties that
18// do not need to be kept in sync with the associated native model.
19//
20// This class differs internally from WriteTransactions in that it does a less
21// good job of tracking and reporting on changes to the entries modified within
22// its scope.  This is because its changes do not need to be reported to the
23// DirectoryChangeDelegate.
24class SYNC_EXPORT_PRIVATE ModelNeutralWriteTransaction
25    : public BaseWriteTransaction {
26 public:
27  ModelNeutralWriteTransaction(
28      const tracked_objects::Location& location,
29      WriterTag writer,
30      Directory* directory);
31  virtual ~ModelNeutralWriteTransaction();
32
33  virtual void TrackChangesTo(const EntryKernel* entry) OVERRIDE;
34
35 private:
36  MetahandleSet modified_handles_;
37
38  DISALLOW_COPY_AND_ASSIGN(ModelNeutralWriteTransaction);
39};
40
41}  // namespace syncable
42}  // namespace syncer
43
44#endif  // SYNC_SYNCABLE_SYNCABLE_MODEL_NEUTRAL_WRITE_TRANSACTION_H_
45