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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_MODEL_SYNC_MERGE_RESULT_H_
#define COMPONENTS_SYNC_MODEL_SYNC_MERGE_RESULT_H_
#include <stdint.h>
#include "components/sync/base/model_type.h"
#include "components/sync/model/sync_error.h"
namespace syncer {
// A model-type-specific view of a sync merge. This class encapsulates the
// state before and after the merge as well as the deltas and any error that
// occurred.
// Note: This class only tracks one side of the merge. In other words, if built
// by the local SyncableService, all values correspond to the local state before
// and after merging, and the delta's applied to that state. Sync's change
// processor will create a separate merge result.
class SyncMergeResult {
public:
// Initialize an empty merge result for model type |type|.
explicit SyncMergeResult(ModelType type);
SyncMergeResult(const SyncMergeResult& other);
~SyncMergeResult();
// Default copy and assign welcome.
// Setters.
// Note: if |error.IsSet()| is true, |error.type()| must match model_type_
void set_error(SyncError error);
void set_num_items_before_association(int num_items_before_association);
void set_num_items_after_association(int num_items_after_association);
void set_num_items_added(int num_items_added);
void set_num_items_deleted(int num_items_deleted);
void set_num_items_modified(int num_items_modified);
void set_pre_association_version(int64_t version);
// Getters.
ModelType model_type() const;
SyncError error() const;
int num_items_before_association() const;
int num_items_after_association() const;
int num_items_added() const;
int num_items_deleted() const;
int num_items_modified() const;
int64_t pre_association_version() const;
private:
// Make |this| into a copy of |other|.
void CopyFrom(const SyncMergeResult& other);
// The datatype that was associated.
ModelType model_type_;
// The error encountered during association. Unset if no error was
// encountered.
SyncError error_;
// The state of the world before association.
int num_items_before_association_;
// The state of the world after association.
int num_items_after_association_;
// The changes that took place during association. In a correctly working
// system these should be the deltas between before and after.
int num_items_added_;
int num_items_deleted_;
int num_items_modified_;
// Version of model before association.
int64_t pre_association_version_;
};
} // namespace syncer
#endif // COMPONENTS_SYNC_MODEL_SYNC_MERGE_RESULT_H_