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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SYNC_INTERNAL_API_BASE_TRANSACTION_H_
#define SYNC_INTERNAL_API_BASE_TRANSACTION_H_
#pragma once
#include "sync/internal_api/user_share.h"
#include "sync/util/cryptographer.h"
namespace syncable {
class BaseTransaction;
class Directory;
}
namespace sync_api {
// Sync API's BaseTransaction, ReadTransaction, and WriteTransaction allow for
// batching of several read and/or write operations. The read and write
// operations are performed by creating ReadNode and WriteNode instances using
// the transaction. These transaction classes wrap identically named classes in
// syncable, and are used in a similar way. Unlike syncable::BaseTransaction,
// whose construction requires an explicit syncable::Directory, a sync
// API BaseTransaction is created from a UserShare object.
class BaseTransaction {
public:
// Provide access to the underlying syncable.h objects from BaseNode.
virtual syncable::BaseTransaction* GetWrappedTrans() const = 0;
browser_sync::Cryptographer* GetCryptographer() const;
syncable::Directory* GetDirectory() const {
return directory_;
}
protected:
explicit BaseTransaction(UserShare* share);
virtual ~BaseTransaction();
BaseTransaction() : directory_(NULL) { }
private:
syncable::Directory* directory_;
DISALLOW_COPY_AND_ASSIGN(BaseTransaction);
};
syncable::ModelTypeSet GetEncryptedTypes(
const sync_api::BaseTransaction* trans);
} // namespace sync_api
#endif // SYNC_INTERNAL_API_BASE_TRANSACTION_H_
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