Override Object.hashCode() and Object.equals().

[demoscenemusic.git] / src / main / java / net / pterodactylus / demoscenemusic / data / DefaultArtist.java

diff --git a/src/main/java/net/pterodactylus/demoscenemusic/data/DefaultArtist.java b/src/main/java/net/pterodactylus/demoscenemusic/data/DefaultArtist.java
index 26a06bb..151aeca 100644 (file)
--- a/src/main/java/net/pterodactylus/demoscenemusic/data/DefaultArtist.java
+++ b/src/main/java/net/pterodactylus/demoscenemusic/data/DefaultArtist.java
@@ -18,23 +18,49 @@
 package net.pterodactylus.demoscenemusic.data;
 
 import java.util.Collection;
+import java.util.Comparator;
 
 /**
- * TODO
+ * Default implementation for an artist data container.
  *
  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  */
 public class DefaultArtist extends DefaultBase implements Artist {
 
+       /** Comparator that sorts artists by name. */
+       public static final Comparator<Artist> NAME_COMPARATOR = new Comparator<Artist>() {
+
+               @Override
+               public int compare(Artist leftArtist, Artist rightArtist) {
+                       return leftArtist.getName().compareToIgnoreCase(rightArtist.getName());
+               }
+       };
+
+       /**
+        * Creates a new artist data container.
+        *
+        * @param id
+        *            The ID of the artist
+        */
        public DefaultArtist(String id) {
                super(id);
        }
 
+       //
+       // ARTIST METHODS
+       //
+
+       /**
+        * {@inheritDoc}
+        */
        @Override
        public String getName() {
                return getValue("name", String.class).get();
        }
 
+       /**
+        * {@inheritDoc}
+        */
        @Override
        public Artist setName(String name) {
                getValue("name", String.class).set(name);
@@ -59,16 +85,45 @@ public class DefaultArtist extends DefaultBase implements Artist {
                return this;
        }
 
+       /**
+        * {@inheritDoc}
+        */
        @Override
        @SuppressWarnings({ "unchecked" })
        public Collection<Track> getTracks() {
                return getValue("tracks", Collection.class).get();
        }
 
+       /**
+        * {@inheritDoc}
+        */
        @Override
        public Artist setTracks(Collection<Track> tracks) {
                getValue("tracks", Collection.class).set(tracks);
                return this;
        }
 
+       //
+       // OBJECT METHODS
+       //
+
+       /**
+        * {@inheritDoc}
+        */
+       @Override
+       public int hashCode() {
+               return getId().hashCode();
+       }
+
+       /**
+        * {@inheritDoc}
+        */
+       @Override
+       public boolean equals(Object object) {
+               if (!(object instanceof Artist)) {
+                       return false;
+               }
+               return ((Artist) object).getId().equals(getId());
+       }
+
 }