sync/syncable/syncable_model_neutral_write_transaction.h

   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
  12 namespace syncer {
  13 namespace 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.
  24 class 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_