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Small optim when visiting artist links

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This commit is contained in:
emeric
2024-04-13 14:33:06 +02:00
parent cd5569db2f
commit be600b5e13
5 changed files with 36 additions and 57 deletions
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src/libs/database/impl/TrackArtistLink.cpp
+10 -6
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@@ -30,11 +30,11 @@ namespace lms::db
{
namespace
{
Wt::Dbo::Query<TrackArtistLinkId> createQuery(Session& session, const TrackArtistLink::FindParameters& params)
Wt::Dbo::Query<Wt::Dbo::ptr<TrackArtistLink>> createQuery(Session& session, const TrackArtistLink::FindParameters& params)
{
session.checkReadTransaction();
auto query{ session.getDboSession()->query<TrackArtistLinkId>("SELECT DISTINCT t_a_l.id FROM track_artist_link t_a_l") };
auto query{ session.getDboSession()->query<Wt::Dbo::ptr<TrackArtistLink>>("SELECT t_a_l FROM track_artist_link t_a_l") };
if (params.linkType)
query.where("t_a_l.type = ?").bind(*params.linkType);
@@ -51,6 +51,8 @@ namespace lms::db
if (params.track.isValid())
query.where("t.id = ?").bind(params.track);
query.groupBy("t_a_l.id");
return query;
}
}
@@ -79,12 +81,14 @@ namespace lms::db
return utils::fetchQuerySingleResult(session.getDboSession()->find<TrackArtistLink>().where("id = ?").bind(id));
}
RangeResults<TrackArtistLinkId> TrackArtistLink::find(Session& session, const FindParameters& params)
void TrackArtistLink::find(Session& session, const FindParameters& parameters, const std::function<void(const TrackArtistLink::pointer&)>& func)
{
session.checkReadTransaction();
const auto query{ createQuery(session, parameters) };
auto query{ createQuery(session, params) };
return utils::execRangeQuery<TrackArtistLinkId>(query, params.range);
utils::forEachQueryResult(query, [&](const TrackArtistLink::pointer& link)
{
func(link);
});
}
core::EnumSet<TrackArtistLinkType> TrackArtistLink::findUsedTypes(Session& session)