chromium/chrome/browser/predictors/autocomplete_action_predictor_table.h

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_PREDICTORS_AUTOCOMPLETE_ACTION_PREDICTOR_TABLE_H_
#define CHROME_BROWSER_PREDICTORS_AUTOCOMPLETE_ACTION_PREDICTOR_TABLE_H_

#include <string>
#include <vector>

#include "base/task/sequenced_task_runner.h"
#include "components/sqlite_proto/table_manager.h"
#include "url/gurl.h"

namespace predictors {

// This manages the autocomplete predictor table within the SQLite database
// passed in to the constructor. It expects the following scheme:
//
// network_action_predictor
//   id                 A unique id.
//   user_text          What the user typed.
//   url                The URL of the entry.
//   number_of_hits     Number of times the entry was shown to the user and
//                      selected.
//   number_of_misses   Number of times the entry was shown to the user but not
//                      selected.
//
// TODO(dominich): Consider adding this table to one of the history databases.
// In memory is currently used, but adding to the on-disk visits database
// would allow DeleteOldEntries to be cheaper through use of a join.
//
// All the functions apart from constructor and destructor have to be called in
// the DB sequence provided to the constructor of this class.
class AutocompleteActionPredictorTable : public sqlite_proto::TableManager { … };

}  // namespace predictors

#endif  // CHROME_BROWSER_PREDICTORS_AUTOCOMPLETE_ACTION_PREDICTOR_TABLE_H_