From: David ‘Bombe’ Roden <bombe@pterodactylus.net>
Date: Thu, 19 Apr 2012 14:11:47 +0000 (+0200)
Subject: Load an artist’s groups lazily.
X-Git-Url: https://git.pterodactylus.net/?p=demoscenemusic.git;a=commitdiff_plain;h=442daa4c3aafcc8398ab52e7e475f3c28c5e7caa

Load an artist’s groups lazily.
---

diff --git a/src/main/java/net/pterodactylus/demoscenemusic/data/DataManager.java b/src/main/java/net/pterodactylus/demoscenemusic/data/DataManager.java
index 85f35fa..7e74ea9 100644
--- a/src/main/java/net/pterodactylus/demoscenemusic/data/DataManager.java
+++ b/src/main/java/net/pterodactylus/demoscenemusic/data/DataManager.java
@@ -202,10 +202,31 @@ public class DataManager {
 			}
 		});
 
+		private final Memoizer<Void> groupsMemoizer = new Memoizer<Void>(new Callable<Void>() {
+
+			@Override
+			public Void call() throws Exception {
+				if (!hasValue("groups")) {
+					value("groups", Collection.class).set(getGroupsByArtist(id()));
+				}
+				return null;
+			}
+
+		});
+
 		public LazyArtist(String id) {
 			super(id);
 		}
 
+		/**
+		 * {@inheritDoc}
+		 */
+		@Override
+		public Collection<Group> groups() {
+			groupsMemoizer.get();
+			return super.groups();
+		}
+
 		public Collection<Track> tracks() {
 			tracksMemoizer.get();
 			return super.tracks();