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// Copyright 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 COMPONENTS_SYNC_SYNCABLE_WRITE_TRANSACTION_H_
#define COMPONENTS_SYNC_SYNCABLE_WRITE_TRANSACTION_H_
#include <stddef.h>
#include <stdint.h>
#include <string>
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "components/sync/model/sync_change_processor.h"
#include "components/sync/syncable/base_transaction.h"
namespace tracked_objects {
class Location;
} // namespace tracked_objects
namespace syncer {
namespace syncable {
class BaseTransaction;
class WriteTransaction;
} // namespace syncable
// Sync API's WriteTransaction is a read/write BaseTransaction. It wraps
// a syncable::WriteTransaction.
//
// NOTE: Only a single model type can be mutated for a given
// WriteTransaction.
class WriteTransaction : public BaseTransaction {
public:
// Start a new read/write transaction.
WriteTransaction(const tracked_objects::Location& from_here,
UserShare* share);
// |transaction_version| stores updated model and nodes version if model
// is changed by the transaction, or syncable::kInvalidTransaction
// if not after transaction is closed. This constructor is used for model
// types that support embassy data.
WriteTransaction(const tracked_objects::Location& from_here,
UserShare* share,
int64_t* transaction_version);
~WriteTransaction() override;
// Provide access to the syncable transaction from the API WriteNode.
syncable::BaseTransaction* GetWrappedTrans() const override;
syncable::WriteTransaction* GetWrappedWriteTrans() { return transaction_; }
// Set's a |type|'s local context. |refresh_status| controls whether
// a datatype refresh is performed (clearing the progress marker token and
// setting the version of all synced entities to 1).
void SetDataTypeContext(
ModelType type,
SyncChangeProcessor::ContextRefreshStatus refresh_status,
const std::string& context);
// Update all entries that refer to |attachment_id| indicating that
// |attachment_id| has been uploaded to the sync server.
void UpdateEntriesMarkAttachmentAsOnServer(const AttachmentId& attachment_id);
protected:
WriteTransaction() {}
void SetTransaction(syncable::WriteTransaction* trans) {
transaction_ = trans;
}
private:
void* operator new(size_t size); // Transaction is meant for stack use only.
// The underlying syncable object which this class wraps.
syncable::WriteTransaction* transaction_;
DISALLOW_COPY_AND_ASSIGN(WriteTransaction);
};
} // namespace syncer
#endif // COMPONENTS_SYNC_SYNCABLE_WRITE_TRANSACTION_H_
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