134 lines
3.4 KiB
C++
134 lines
3.4 KiB
C++
/*
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* Copyright (C) 2018 Emeric Poupon
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*
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* This file is part of LMS.
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*
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* LMS is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* LMS is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with LMS. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "services/database/TrackFeatures.hpp"
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#include <boost/property_tree/ptree.hpp>
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#include <boost/property_tree/json_parser.hpp>
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#include "services/database/Session.hpp"
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#include "services/database/Track.hpp"
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#include "utils/Logger.hpp"
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#include "IdTypeTraits.hpp"
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#include "Utils.hpp"
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namespace Database {
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TrackFeatures::TrackFeatures(ObjectPtr<Track> track, const std::string& jsonEncodedFeatures)
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: _data {jsonEncodedFeatures},
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_track {getDboPtr(track)}
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{
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}
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std::size_t
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TrackFeatures::getCount(Session& session)
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{
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session.checkSharedLocked();
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return session.getDboSession().query<int>("SELECT COUNT(*) FROM track_features");
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}
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TrackFeatures::pointer
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TrackFeatures::find(Session& session, TrackFeaturesId id)
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{
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session.checkSharedLocked();
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return session.getDboSession().find<TrackFeatures>()
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.where("id = ?").bind(id)
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.resultValue();
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}
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TrackFeatures::pointer
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TrackFeatures::find(Session& session, TrackId trackId)
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{
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session.checkSharedLocked();
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return session.getDboSession().find<TrackFeatures>()
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.where("track_id = ?").bind(trackId)
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.resultValue();
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}
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RangeResults<TrackFeaturesId>
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TrackFeatures::find(Session& session, Range range)
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{
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session.checkSharedLocked();
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auto query {session.getDboSession().query<TrackFeaturesId>("SELECT id from track_features")};
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return execQuery(query, range);
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}
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TrackFeatures::pointer
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TrackFeatures::create(Session& session, ObjectPtr<Track> track, const std::string& jsonEncodedFeatures)
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{
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session.checkUniqueLocked();
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TrackFeatures::pointer res {session.getDboSession().add(std::make_unique<TrackFeatures>(track, jsonEncodedFeatures))};
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session.getDboSession().flush();
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return res;
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}
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FeatureValues
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TrackFeatures::getFeatureValues(const FeatureName& featureNode) const
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{
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FeatureValuesMap featuresValuesMap {getFeatureValuesMap({featureNode})};
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return std::move(featuresValuesMap[featureNode]);
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}
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FeatureValuesMap
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TrackFeatures::getFeatureValuesMap(const std::unordered_set<FeatureName>& featureNames) const
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{
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FeatureValuesMap res;
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try
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{
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std::istringstream iss {_data};
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boost::property_tree::ptree root;
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boost::property_tree::read_json(iss, root);
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for (const FeatureName& featureName : featureNames)
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{
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FeatureValues& featureValues {res[featureName]};
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auto node {root.get_child(featureName)};
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bool hasChildren = false;
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for (const auto& child : node.get_child(""))
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{
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hasChildren = true;
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featureValues.push_back(child.second.get_value<double>());
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}
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if (!hasChildren)
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featureValues.push_back(node.get_value<double>());
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}
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}
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catch (boost::property_tree::ptree_error& error)
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{
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LMS_LOG(DB, ERROR) << "Track " << _track.id() << ": ptree exception: " << error.what();
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res.clear();
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}
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return res;
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}
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} // namespace Database
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