New UI: first step

src/database/DbArtist.cpp

@@ -0,0 +1,202 @@
+/*
+ * Copyright (C) 2015 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 "Types.hpp"
+#include "SqlQuery.hpp"
+
+#include "utils/Logger.hpp"
+
+namespace Database
+{
+
+Artist::Artist(const std::string& name, const std::string& MBID)
+: _name(std::string(name, 0 , _maxNameLength)),
+_MBID(MBID)
+{
+
+}
+
+std::vector<Artist::pointer>
+Artist::getByName(Wt::Dbo::Session& session, const std::string& name)
+{
+	Wt::Dbo::collection<Artist::pointer> res = session.find<Artist>().where("name = ?").bind( std::string(name, 0, _maxNameLength) );
+	return std::vector<Artist::pointer>(res.begin(), res.end());
+}
+
+Artist::pointer
+Artist::getByMBID(Wt::Dbo::Session& session, const std::string& mbid)
+{
+	return session.find<Artist>().where("mbid = ?").bind(mbid);
+}
+
+Artist::pointer
+Artist::getById(Wt::Dbo::Session& session, Artist::id_type id)
+{
+	return session.find<Artist>().where("id = ?").bind(id);
+}
+
+Artist::pointer
+Artist::create(Wt::Dbo::Session& session, const std::string& name, const std::string& MBID)
+{
+	return session.add(new Artist(name, MBID));
+}
+
+Artist::pointer
+Artist::getNone(Wt::Dbo::Session& session)
+{
+	std::vector<pointer> res = getByName(session, "<None>");
+	if (res.empty())
+		return create(session, "<None>");
+
+	return res.front();
+}
+
+bool
+Artist::isNone() const
+{
+	return _name == "<None>";
+}
+
+std::vector<Artist::pointer>
+Artist::getAll(Wt::Dbo::Session& session, int offset, int size)
+{
+	Wt::Dbo::collection<pointer> res = session.find<Artist>().orderBy("LOWER(name)").offset(offset).limit(size);
+	return std::vector<pointer>(res.begin(), res.end());
+}
+
+std::vector<Artist::pointer>
+Artist::getAllOrphans(Wt::Dbo::Session& session)
+{
+	Wt::Dbo::collection<Artist::pointer> res = session.query< Wt::Dbo::ptr<Artist> >("SELECT DISTINCT a FROM artist a LEFT OUTER JOIN Track t ON a.id = t.artist_id WHERE t.id IS NULL");
+
+	return std::vector<pointer>(res.begin(), res.end());
+}
+
+static
+Wt::Dbo::Query<Artist::pointer>
+getQuery(Wt::Dbo::Session& session,
+		const std::vector<id_type>& clusterIds,
+		const std::vector<std::string>& keywords)
+{
+	WhereClause where;
+
+	std::ostringstream oss;
+	oss << "SELECT DISTINCT a FROM artist a";
+
+	for (auto keyword : keywords)
+		where.And(WhereClause("a.name LIKE ?")).bind("%%" + keyword + "%%");
+
+	if (!clusterIds.empty())
+	{
+		oss << " INNER JOIN track t ON t.artist_id = a.id INNER JOIN cluster c ON c.id = t_c.cluster_id INNER JOIN track_cluster t_c ON t_c.track_id = t.id";
+
+		WhereClause clusterClause;
+
+		for (auto id : clusterIds)
+			clusterClause.Or(WhereClause("c.id = ?")).bind(std::to_string(id));
+
+		where.And(clusterClause);
+	}
+	oss << " " << where.get();
+
+	if (!clusterIds.empty())
+		oss << " GROUP BY t.id HAVING COUNT(*) = " << clusterIds.size();
+
+	oss << " ORDER BY a.name";
+
+	Wt::Dbo::Query<Artist::pointer> query = session.query<Artist::pointer>( oss.str() );
+
+	for (const std::string& bindArg : where.getBindArgs())
+	{
+		query.bind(bindArg);
+	}
+
+	return query;
+}
+
+std::vector<Artist::pointer>
+Artist::getByFilter(Wt::Dbo::Session& session,
+		const std::vector<id_type>& clusters,
+		const std::vector<std::string> keywords,
+		int offset, int size, bool& moreResults)
+{
+	Wt::Dbo::collection<Artist::pointer> collection = getQuery(session, clusters, keywords).limit(size).offset(offset);
+
+	auto res = std::vector<pointer>(collection.begin(), collection.end());
+
+	if (size != -1 && res.size() == static_cast<std::size_t>(size) + 1)
+	{
+		moreResults = true;
+		res.pop_back();
+	}
+	else
+		moreResults = false;
+
+	return res;
+}
+
+std::vector<Wt::Dbo::ptr<Release> >
+Artist::getReleases(const std::vector<id_type>& clusterIds) const
+{
+	assert(self());
+	assert(self()->id() != Wt::Dbo::dbo_traits<Artist>::invalidId() );
+	assert(session());
+
+	WhereClause where;
+
+	std::ostringstream oss;
+	oss << "SELECT DISTINCT r FROM release r INNER JOIN artist a ON t.artist_id = a.id INNER JOIN track t ON t.release_id = r.id";
+
+	if (!clusterIds.empty())
+	{
+		oss << " INNER JOIN cluster c ON c.id = t_c.cluster_id INNER JOIN track_cluster t_c ON t_c.track_id = t.id";
+
+		WhereClause clusterClause;
+
+		for (auto id : clusterIds)
+			clusterClause.Or(WhereClause("c.id = ?")).bind(std::to_string(id));
+
+		where.And(clusterClause);
+	}
+
+	where.And(WhereClause("a.id = ?")).bind(std::to_string(id()));
+
+	oss << " " << where.get();
+
+	if (!clusterIds.empty())
+		oss << " GROUP BY t.id HAVING COUNT(*) = " << clusterIds.size();
+
+	// TODO order
+	oss << " ORDER BY t.date,r.name";
+
+	Wt::Dbo::Query<Release::pointer> query = session()->query<Release::pointer>( oss.str() );
+
+	for (const std::string& bindArg : where.getBindArgs())
+	{
+		query.bind(bindArg);
+	}
+
+	Wt::Dbo::collection< Wt::Dbo::ptr<Release> > res = query;
+
+	return std::vector< Wt::Dbo::ptr<Release> > (res.begin(), res.end());
+}
+
+
+
+} // namespace Database