From 6ea5acf682dec9e234df216e61a60bb23cdd5d0c Mon Sep 17 00:00:00 2001
From: =?utf8?q?David=20=E2=80=98Bombe=E2=80=99=20Roden?=
 <bombe@pterodactylus.net>
Date: Tue, 19 Feb 2013 20:15:40 +0100
Subject: [PATCH] Add function to extract the season number of an episode.

This can be used to create a multimap by season from an iterable.
---
 .../java/net/pterodactylus/rhynodge/states/EpisodeState.java   | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/main/java/net/pterodactylus/rhynodge/states/EpisodeState.java b/src/main/java/net/pterodactylus/rhynodge/states/EpisodeState.java
index c604634..7ed3dce 100644
--- a/src/main/java/net/pterodactylus/rhynodge/states/EpisodeState.java
+++ b/src/main/java/net/pterodactylus/rhynodge/states/EpisodeState.java
@@ -29,6 +29,7 @@ import net.pterodactylus.rhynodge.states.EpisodeState.Episode;
 import net.pterodactylus.rhynodge.states.TorrentState.TorrentFile;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
+import com.google.common.base.Function;
 
 /**
  * {@link State} implementation that stores episodes of TV shows, parsed via
@@ -100,6 +101,15 @@ public class EpisodeState extends AbstractState implements Iterable<Episode> {
 	 */
 	public static class Episode implements Comparable<Episode>, Iterable<TorrentFile> {
 
+		/** Function to extract the season of an episode. */
+		public static final Function<Episode, Integer> BY_SEASON = new Function<Episode, Integer>() {
+
+			@Override
+			public Integer apply(Episode episode) {
+				return episode.season();
+			}
+		};
+
 		/** The season of the episode. */
 		@JsonProperty
 		private final int season;
-- 
2.7.4