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feb774a149
* persistence/genre: change Put() to upsert Absolutely disgusting hack to work around [1]. Try to insert the genre, but if it conflicts, ignore it and update the genre with the existing ID. [1]: https://github.com/navidrome/navidrome/issues/1918. * scanner: remove cached genre repository Not needed anytmore. And remember: "Many Small Queries Are Efficient In SQLite" [1]. [1]: https://www.sqlite.org/np1queryprob.html * Revert "scanner: remove cached genre repository" This reverts commit c5d900aa43e1c86b69f923b408e11ab8df8d815c. * Use squirrel to build SQL, to reduce risk of SQL injection Co-authored-by: Deluan <deluan@navidrome.org>
104 lines
2.9 KiB
Go
104 lines
2.9 KiB
Go
package persistence
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import (
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"context"
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"github.com/google/uuid"
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. "github.com/Masterminds/squirrel"
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"github.com/beego/beego/v2/client/orm"
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"github.com/deluan/rest"
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"github.com/navidrome/navidrome/log"
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"github.com/navidrome/navidrome/model"
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)
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type genreRepository struct {
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sqlRepository
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sqlRestful
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}
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func NewGenreRepository(ctx context.Context, o orm.QueryExecutor) model.GenreRepository {
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r := &genreRepository{}
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r.ctx = ctx
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r.ormer = o
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r.tableName = "genre"
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r.filterMappings = map[string]filterFunc{
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"name": containsFilter,
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}
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return r
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}
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func (r *genreRepository) GetAll(opt ...model.QueryOptions) (model.Genres, error) {
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sq := r.newSelect(opt...).Columns("genre.id", "genre.name", "a.album_count", "m.song_count").
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LeftJoin("(select ag.genre_id, count(ag.album_id) as album_count from album_genres ag group by ag.genre_id) a on a.genre_id = genre.id").
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LeftJoin("(select mg.genre_id, count(mg.media_file_id) as song_count from media_file_genres mg group by mg.genre_id) m on m.genre_id = genre.id")
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res := model.Genres{}
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err := r.queryAll(sq, &res)
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return res, err
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}
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// Put is an Upsert operation, based on the name of the genre: If the name already exists, returns its ID, or else
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// insert the new genre in the DB and returns its new created ID.
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func (r *genreRepository) Put(m *model.Genre) error {
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if m.ID == "" {
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m.ID = uuid.NewString()
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}
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sql := Insert("genre").Columns("id", "name").Values(m.ID, m.Name).
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Suffix("on conflict (name) do update set name=excluded.name returning id")
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resp := model.Genre{}
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err := r.queryOne(sql, &resp)
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if err != nil {
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return err
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}
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m.ID = resp.ID
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return nil
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}
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func (r *genreRepository) Count(options ...rest.QueryOptions) (int64, error) {
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return r.count(Select(), r.parseRestOptions(options...))
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}
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func (r *genreRepository) Read(id string) (interface{}, error) {
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sel := r.newSelect().Columns("*").Where(Eq{"id": id})
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var res model.Genre
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err := r.queryOne(sel, &res)
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return &res, err
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}
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func (r *genreRepository) ReadAll(options ...rest.QueryOptions) (interface{}, error) {
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sel := r.newSelect(r.parseRestOptions(options...)).Columns("*")
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res := model.Genres{}
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err := r.queryAll(sel, &res)
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return res, err
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}
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func (r *genreRepository) EntityName() string {
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return r.tableName
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}
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func (r *genreRepository) NewInstance() interface{} {
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return &model.Genre{}
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}
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func (r *genreRepository) purgeEmpty() error {
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del := Delete(r.tableName).Where(`id in (
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select genre.id from genre
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left join album_genres ag on genre.id = ag.genre_id
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left join artist_genres a on genre.id = a.genre_id
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left join media_file_genres mfg on genre.id = mfg.genre_id
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where ag.genre_id is null
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and a.genre_id is null
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and mfg.genre_id is null
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)`)
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c, err := r.executeSQL(del)
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if err == nil {
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if c > 0 {
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log.Debug(r.ctx, "Purged unused genres", "totalDeleted", c)
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}
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}
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return err
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}
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var _ model.GenreRepository = (*genreRepository)(nil)
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var _ model.ResourceRepository = (*genreRepository)(nil)
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