Add method to get artist by ID.

diff --git a/src/main/java/net/pterodactylus/demoscenemusic/data/DataManager.java b/src/main/java/net/pterodactylus/demoscenemusic/data/DataManager.java
index 214d0c4..520a3d9 100644 (file)
--- a/src/main/java/net/pterodactylus/demoscenemusic/data/DataManager.java
+++ b/src/main/java/net/pterodactylus/demoscenemusic/data/DataManager.java
@@ -64,6 +64,20 @@ public class DataManager {
                return artistLoader.all();
        }
 
+       public Artist getArtistById(String id) throws DatabaseException {
+               Query query = new Query(Type.SELECT, "ARTISTS");
+               query.addField(new Field("ARTISTS.*"));
+               query.addField(new Field("GROUP_ARTISTS.*"));
+               query.addField(new Field("GROUPS.*"));
+               query.addJoin(new Join(JoinType.INNER, "GROUP_ARTISTS", new Field("ARTISTS.ID"), new Field("GROUP_ARTISTS.ARTIST")));
+               query.addJoin(new Join(JoinType.INNER, "GROUPS", new Field("GROUP_ARTISTS.GROUP_"), new Field("GROUPS.ID")));
+               query.addWhereClause(new ValueFieldWhereClause(new ValueField("ARTISTS.ID", new StringParameter(id))));
+               query.addOrderField(new OrderField(new Field("ARTISTS.ID")));
+               ArtistLoader artistLoader = new ArtistLoader();
+               database.process(query, artistLoader);
+               return artistLoader.get();
+       }
+
        public Track trackById(String id) throws DatabaseException {
                Query query = new Query(Type.SELECT, "TRACKS");
                query.addField(new Field("TRACKS.*"));