X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;ds=sidebyside;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fdata%2FAlbum.java;fp=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fdata%2FAlbum.java;h=aa14edef2f2f128d9ae5067faaa675736281ac29;hb=c2e868714435ac7c75d77d1911d0dfb00393d051;hp=cb7b4f3aad236355ae51da93507e4aeac83fff69;hpb=9a920789e2b9109d4de0adb676a00797f2d36bfb;p=Sone.git

diff --git a/src/main/java/net/pterodactylus/sone/data/Album.java b/src/main/java/net/pterodactylus/sone/data/Album.java
index cb7b4f3..aa14ede 100644
--- a/src/main/java/net/pterodactylus/sone/data/Album.java
+++ b/src/main/java/net/pterodactylus/sone/data/Album.java
@@ -69,6 +69,15 @@ public class Album implements Fingerprintable {
 		}
 	};
 
+	/** Function that transforms an album into the images it contains. */
+	public static final Function<Album, List<Image>> IMAGES = new Function<Album, List<Image>>() {
+
+		@Override
+		public List<Image> apply(Album album) {
+			return album.getImages();
+		}
+	};
+
 	/**
 	 * Filter that removes all albums that do not have any images in any album
 	 * below it.
@@ -186,7 +195,6 @@ public class Album implements Fingerprintable {
 	public void addAlbum(Album album) {
 		checkNotNull(album, "album must not be null");
 		checkArgument(album.getSone().equals(sone), "album must belong to the same Sone as this album");
-		checkState((this.parent == null) || (this.parent.equals(album.parent)), "album must not already be set to some other Sone");
 		album.setParent(this);
 		if (!albums.contains(album)) {
 			albums.add(album);