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// Copyright 2017 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_HISTORY_CORE_BROWSER_TYPED_URL_SYNC_METADATA_DATABASE_H_
#define COMPONENTS_HISTORY_CORE_BROWSER_TYPED_URL_SYNC_METADATA_DATABASE_H_
#include "base/macros.h"
#include "components/history/core/browser/url_row.h"
#include "components/sync/base/model_type.h"
#include "components/sync/model/metadata_batch.h"
#include "components/sync/model/sync_metadata_store.h"
#include "sql/meta_table.h"
namespace sql {
class Connection;
}
namespace history {
// A sync metadata database needs to maintain two tables: entity metadata table
// and datatype state table. Entity metadata table contains metadata(sync
// states) for each url. Datatype state table contains the state of typed url
// datatype.
class TypedURLSyncMetadataDatabase : public syncer::SyncMetadataStore {
public:
// Must call InitVisitTable() before using to make sure the database is
// initialized.
TypedURLSyncMetadataDatabase();
~TypedURLSyncMetadataDatabase() override;
// Read all the stored metadata for typed URL and fill |metadata_batch|
// with it.
bool GetAllSyncMetadata(syncer::MetadataBatch* metadata_batch);
// syncer::SyncMetadataStore implementation.
bool UpdateSyncMetadata(syncer::ModelType model_type,
const std::string& storage_key,
const sync_pb::EntityMetadata& metadata) override;
bool ClearSyncMetadata(syncer::ModelType model_type,
const std::string& storage_key) override;
bool UpdateModelTypeState(
syncer::ModelType model_type,
const sync_pb::ModelTypeState& model_type_state) override;
bool ClearModelTypeState(syncer::ModelType model_type) override;
static URLID StorageKeyToURLID(const std::string& storage_key);
protected:
// Returns the database for the functions in this interface.
virtual sql::Connection& GetDB() = 0;
// Returns MetaTable, so this sync can store ModelTypeState in MetaTable.
// Check if GetMetaTable().GetVersionNumber() is greater than 0 to make sure
// MetaTable is initialed.
virtual sql::MetaTable& GetMetaTable() = 0;
// Called by the derived classes on initialization to make sure the tables
// and indices are properly set up. Must be called before anything else.
bool InitSyncTable();
private:
// Read all sync_pb::EntityMetadata for typed URL and fill
// |metadata_records| with it.
bool GetAllSyncEntityMetadata(syncer::MetadataBatch* metadata_batch);
// Read sync_pb::ModelTypeState for typed URL and fill |state| with it.
bool GetModelTypeState(sync_pb::ModelTypeState* state);
DISALLOW_COPY_AND_ASSIGN(TypedURLSyncMetadataDatabase);
};
} // namespace history
#endif // COMPONENTS_HISTORY_CORE_BROWSER_TYPED_URL_SYNC_METADATA_DATABASE_H_
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