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| 1 // Copyright (c) 2011 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 CHROME_BROWSER_SYNC_INTERNAL_API_READ_TRANSACTION_H_ | |
| 6 #define CHROME_BROWSER_SYNC_INTERNAL_API_READ_TRANSACTION_H_ | |
| 7 | |
| 8 #include "base/compiler_specific.h" | |
| 9 #include "chrome/browser/sync/internal_api/base_transaction.h" | |
| 10 | |
| 11 namespace tracked_objects { | |
| 12 class Location; | |
| 13 } // namespace tracked_objects | |
| 14 | |
| 15 namespace sync_api { | |
| 16 | |
| 17 struct UserShare; | |
| 18 | |
| 19 // Sync API's ReadTransaction is a read-only BaseTransaction. It wraps | |
| 20 // a syncable::ReadTransaction. | |
| 21 class ReadTransaction : public BaseTransaction { | |
| 22 public: | |
| 23 // Start a new read-only transaction on the specified repository. | |
| 24 ReadTransaction(const tracked_objects::Location& from_here, | |
| 25 UserShare* share); | |
| 26 | |
| 27 // Resume the middle of a transaction. Will not close transaction. | |
| 28 ReadTransaction(UserShare* share, syncable::BaseTransaction* trans); | |
| 29 | |
| 30 virtual ~ReadTransaction(); | |
| 31 | |
| 32 // BaseTransaction override. | |
| 33 virtual syncable::BaseTransaction* GetWrappedTrans() const OVERRIDE; | |
| 34 private: | |
| 35 void* operator new(size_t size); // Transaction is meant for stack use only. | |
| 36 | |
| 37 // The underlying syncable object which this class wraps. | |
| 38 syncable::BaseTransaction* transaction_; | |
| 39 bool close_transaction_; | |
| 40 | |
| 41 DISALLOW_COPY_AND_ASSIGN(ReadTransaction); | |
| 42 }; | |
| 43 | |
| 44 } // namespace sync_api | |
| 45 | |
| 46 #endif // CHROME_BROWSER_SYNC_INTERNAL_API_READ_TRANSACTION_H_ | |
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