Removed the database lib from services as it is still not a service

src/libs/database/impl/TrackFeatures.cpp

@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) 2018 Emeric Poupon
+ *
+ * This file is part of LMS.
+ *
+ * LMS is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * LMS is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with LMS.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "database/TrackFeatures.hpp"
+
+#include <boost/property_tree/ptree.hpp>
+#include <boost/property_tree/json_parser.hpp>
+
+#include "database/Session.hpp"
+#include "database/Track.hpp"
+#include "utils/ILogger.hpp"
+#include "IdTypeTraits.hpp"
+#include "Utils.hpp"
+
+namespace Database {
+
+    TrackFeatures::TrackFeatures(ObjectPtr<Track> track, const std::string& jsonEncodedFeatures)
+        : _data{ jsonEncodedFeatures },
+        _track{ getDboPtr(track) }
+    {
+    }
+
+    TrackFeatures::pointer TrackFeatures::create(Session& session, ObjectPtr<Track> track, const std::string& jsonEncodedFeatures)
+    {
+        return session.getDboSession().add(std::unique_ptr<TrackFeatures> {new TrackFeatures{ track, jsonEncodedFeatures }});
+    }
+
+    std::size_t TrackFeatures::getCount(Session& session)
+    {
+        session.checkReadTransaction();
+
+        return session.getDboSession().query<int>("SELECT COUNT(*) FROM track_features");
+    }
+
+    TrackFeatures::pointer TrackFeatures::find(Session& session, TrackFeaturesId id)
+    {
+        session.checkReadTransaction();
+
+        return session.getDboSession().find<TrackFeatures>()
+            .where("id = ?").bind(id)
+            .resultValue();
+    }
+
+    TrackFeatures::pointer TrackFeatures::find(Session& session, TrackId trackId)
+    {
+        session.checkReadTransaction();
+
+        return session.getDboSession().find<TrackFeatures>()
+            .where("track_id = ?").bind(trackId)
+            .resultValue();
+    }
+
+    RangeResults<TrackFeaturesId> TrackFeatures::find(Session& session, std::optional<Range> range)
+    {
+        session.checkReadTransaction();
+
+        auto query{ session.getDboSession().query<TrackFeaturesId>("SELECT id from track_features") };
+
+        return Utils::execQuery<TrackFeaturesId>(query, range);
+    }
+
+    FeatureValues TrackFeatures::getFeatureValues(const FeatureName& featureNode) const
+    {
+        FeatureValuesMap featuresValuesMap{ getFeatureValuesMap({featureNode}) };
+        return std::move(featuresValuesMap[featureNode]);
+    }
+
+    FeatureValuesMap TrackFeatures::getFeatureValuesMap(const std::unordered_set<FeatureName>& featureNames) const
+    {
+        FeatureValuesMap res;
+
+        try
+        {
+            std::istringstream iss{ _data };
+            boost::property_tree::ptree root;
+
+            boost::property_tree::read_json(iss, root);
+
+            for (const FeatureName& featureName : featureNames)
+            {
+                FeatureValues& featureValues{ res[featureName] };
+
+                auto node{ root.get_child(featureName) };
+
+                bool hasChildren = false;
+                for (const auto& child : node.get_child(""))
+                {
+                    hasChildren = true;
+                    featureValues.push_back(child.second.get_value<double>());
+                }
+
+                if (!hasChildren)
+                    featureValues.push_back(node.get_value<double>());
+            }
+        }
+        catch (boost::property_tree::ptree_error& error)
+        {
+            LMS_LOG(DB, ERROR, "Track " << _track.id() << ": ptree exception: " << error.what());
+            res.clear();
+        }
+
+        return res;
+    }
+
+} // namespace Database