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Optimm to get all artists of a track in a single query

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This commit is contained in:
emeric
2024-04-15 18:50:00 +02:00
parent 2c3365f1aa
commit 18b220b241
6 changed files with 95 additions and 18 deletions
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src/libs/database/impl/TrackArtistLink.cpp
+22 -8
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@@ -39,19 +39,17 @@ namespace lms::db
if (params.linkType)
query.where("t_a_l.type = ?").bind(*params.linkType);
if (params.track.isValid() || params.release.isValid())
query.join("track t ON t.id = t_a_l.track_id");
if (params.track.isValid())
query.where("t_a_l.track_id = ?").bind(params.track);
if (params.artist.isValid())
query.join("artist a ON a.id = t_a_l.artist_id");
query.where("t_a_l.artist_id = ?").bind(params.artist);
if (params.release.isValid())
{
query.join("track t ON t.id = t_a_l.track_id");
query.where("t.release_id = ?").bind(params.release);
if (params.track.isValid())
query.where("t.id = ?").bind(params.track);
query.groupBy("t_a_l.id");
}
return query;
}
@@ -81,6 +79,22 @@ namespace lms::db
return utils::fetchQuerySingleResult(session.getDboSession()->find<TrackArtistLink>().where("id = ?").bind(id));
}
void TrackArtistLink::find(Session& session, TrackId trackId, const std::function<void(const TrackArtistLink::pointer& link, const ObjectPtr<Artist>& artist)>& func)
{
session.checkReadTransaction();
using ResultType = std::tuple < Wt::Dbo::ptr<TrackArtistLink>, Wt::Dbo::ptr<Artist>>;
const auto query{ session.getDboSession()->query<ResultType>("SELECT t_a_l, a FROM track_artist_link t_a_l")
.join("artist a ON t_a_l.artist_id = a.id")
.where("t_a_l.track_id = ?").bind(trackId) };
utils::forEachQueryResult(query, [&](const ResultType& result)
{
func(std::get<Wt::Dbo::ptr<TrackArtistLink>>(result), std::get<Wt::Dbo::ptr<Artist>>(result));
});
}
void TrackArtistLink::find(Session& session, const FindParameters& parameters, const std::function<void(const TrackArtistLink::pointer&)>& func)
{
const auto query{ createQuery(session, parameters) };
src/libs/database/include/database/TrackArtistLink.hpp
+1
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@@ -62,6 +62,7 @@ namespace lms::db
TrackArtistLink() = default;
TrackArtistLink(ObjectPtr<Track> track, ObjectPtr<Artist> artist, TrackArtistLinkType type, std::string_view subType);
static void find(Session& session, TrackId trackId, const std::function<void(const TrackArtistLink::pointer&, const ObjectPtr<Artist>&)>&);
static void find(Session& session, const FindParameters& parameters, const std::function<void(const TrackArtistLink::pointer&)>&);
static pointer find(Session& session, TrackArtistLinkId linkId);
static pointer create(Session& session, ObjectPtr<Track> track, ObjectPtr<Artist> artist, TrackArtistLinkType type, std::string_view subType = {});
src/libs/database/test/Artist.cpp
+64
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@@ -394,6 +394,29 @@ namespace lms::db::tests
EXPECT_TRUE(types.contains(TrackArtistLinkType::Writer));
EXPECT_FALSE(types.contains(TrackArtistLinkType::Composer));
}
{
auto transaction{ session.createReadTransaction() };
std::vector<TrackArtistLink::pointer> visitedLinks;
TrackArtistLink::find(session, TrackArtistLink::FindParameters{}.setTrack(track.getId()), [&](const TrackArtistLink::pointer& link)
{
visitedLinks.push_back(link);
});
ASSERT_EQ(visitedLinks.size(), 3);
EXPECT_EQ(visitedLinks[0]->getArtist()->getId(), artist.getId());
EXPECT_EQ(visitedLinks[1]->getArtist()->getId(), artist.getId());
EXPECT_EQ(visitedLinks[2]->getArtist()->getId(), artist.getId());
auto containsType = [&](TrackArtistLinkType type)
{
return std::any_of(std::cbegin(visitedLinks), std::cend(visitedLinks), [type](const TrackArtistLink::pointer& link) { return link->getType() == type;});
};
EXPECT_TRUE(containsType(TrackArtistLinkType::Artist));
EXPECT_TRUE(containsType(TrackArtistLinkType::ReleaseArtist));
EXPECT_TRUE(containsType(TrackArtistLinkType::Writer));
}
}
TEST_F(DatabaseFixture, Artist_singleTrackMultiArtists)
@@ -453,6 +476,47 @@ namespace lms::db::tests
tracks = Track::findIds(session, Track::FindParameters{}.setArtist(artist2->getId(), { TrackArtistLinkType::Artist }));
EXPECT_EQ(tracks.results.size(), 1);
}
{
auto transaction{ session.createReadTransaction() };
std::vector<TrackArtistLink::pointer> visitedLinks;
TrackArtistLink::find(session, TrackArtistLink::FindParameters{}.setTrack(track.getId()), [&](const TrackArtistLink::pointer& link)
{
visitedLinks.push_back(link);
});
ASSERT_EQ(visitedLinks.size(), 2);
EXPECT_EQ(visitedLinks[0]->getArtist()->getId(), artist1.getId());
EXPECT_EQ(visitedLinks[1]->getArtist()->getId(), artist2.getId());
}
{
auto transaction{ session.createReadTransaction() };
std::vector<TrackArtistLink::pointer> visitedLinks;
TrackArtistLink::find(session, TrackArtistLink::FindParameters{}.setArtist(artist2.getId()), [&](const TrackArtistLink::pointer& link)
{
visitedLinks.push_back(link);
});
ASSERT_EQ(visitedLinks.size(), 1);
EXPECT_EQ(visitedLinks[0]->getArtist()->getId(), artist2.getId());
EXPECT_EQ(visitedLinks[0]->getTrack()->getId(), track.getId());
}
{
auto transaction{ session.createReadTransaction() };
std::vector<std::pair<TrackArtistLink::pointer, Artist::pointer>> visitedEntries;
TrackArtistLink::find(session, track.getId(), [&](const TrackArtistLink::pointer& link, const Artist::pointer& artist)
{
visitedEntries.push_back(std::make_pair(link, artist));
});
ASSERT_EQ(visitedEntries.size(), 2);
EXPECT_EQ(visitedEntries[0].first->getArtist()->getId(), artist1.getId());
EXPECT_EQ(visitedEntries[0].second->getId(), artist1.getId());
EXPECT_EQ(visitedEntries[1].first->getArtist()->getId(), artist2.getId());
EXPECT_EQ(visitedEntries[1].second->getId(), artist2.getId());
}
}
TEST_F(DatabaseFixture, Artist_findByName)