X-Git-Url: https://git.pterodactylus.net/?p=Sone.git;a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fdata%2FPost.java;h=5a1c2c5a5b2e0c1728de23fe521b83fd6bfd2c55;hp=160bb3284e330b55b646409723ab22e54be2701f;hb=7b55e0be6a3283e43a9bbab98f82aebdd948eb33;hpb=8503021c00d63885288c507d9930fefabd5d7678

diff --git a/src/main/java/net/pterodactylus/sone/data/Post.java b/src/main/java/net/pterodactylus/sone/data/Post.java
index 160bb32..5a1c2c5 100644
--- a/src/main/java/net/pterodactylus/sone/data/Post.java
+++ b/src/main/java/net/pterodactylus/sone/data/Post.java
@@ -1,5 +1,5 @@
 /*
- * Sone - Post.java - Copyright © 2010–2013 David Roden
+ * Sone - Post.java - Copyright © 2010–2016 David Roden
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -17,8 +17,11 @@
 
 package net.pterodactylus.sone.data;
 
+import static com.google.common.base.Optional.absent;
+
 import java.util.Comparator;
 
+import com.google.common.base.Optional;
 import com.google.common.base.Predicate;
 
 /**
@@ -27,10 +30,10 @@ import com.google.common.base.Predicate;
  *
  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  */
-public interface Post {
+public interface Post extends Identified {
 
 	/** Comparator for posts, sorts descending by time. */
-	public static final Comparator<Post> TIME_COMPARATOR = new Comparator<Post>() {
+	public static final Comparator<Post> NEWEST_FIRST = new Comparator<Post>() {
 
 		@Override
 		public int compare(Post leftPost, Post rightPost) {
@@ -44,7 +47,7 @@ public interface Post {
 
 		@Override
 		public boolean apply(Post post) {
-			return post.getTime() <= System.currentTimeMillis();
+			return (post != null) && (post.getTime() <= System.currentTimeMillis());
 		}
 
 	};
@@ -61,6 +64,14 @@ public interface Post {
 	public String getId();
 
 	/**
+	 * Returns whether this post has already been loaded.
+	 *
+	 * @return {@code true} if this post has already been loaded, {@code
+	 * false} otherwise
+	 */
+	boolean isLoaded();
+
+	/**
 	 * Returns the Sone this post belongs to.
 	 *
 	 * @return The Sone of this post
@@ -68,11 +79,20 @@ public interface Post {
 	public Sone getSone();
 
 	/**
+	 * Returns the ID of the recipient {@link Sone}, or
+	 * {@link Optional#absent()} if this post does not have a recipient.
+	 *
+	 * @return The ID of the recipient, or {@link Optional#absent()}
+	 */
+	public Optional<String> getRecipientId();
+
+	/**
 	 * Returns the recipient of this post, if any.
 	 *
-	 * @return The recipient of this post, or {@code null}
+	 * @return The recipient of this post, or {@link Optional#absent()} if there
+	 *         is no recipient
 	 */
-	public Sone getRecipient();
+	public Optional<Sone> getRecipient();
 
 	/**
 	 * Returns the time of the post.
@@ -104,4 +124,65 @@ public interface Post {
 	 */
 	public Post setKnown(boolean known);
 
+	/**
+	 * Shell for a post that has not yet been loaded.
+	 *
+	 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’
+	 *         Roden</a>
+	 */
+	public static class EmptyPost implements Post {
+
+		private final String id;
+
+		public EmptyPost(String id) {
+			this.id = id;
+		}
+
+		@Override
+		public String getId() {
+			return id;
+		}
+
+		@Override
+		public boolean isLoaded() {
+			return false;
+		}
+
+		@Override
+		public Sone getSone() {
+			return null;
+		}
+
+		@Override
+		public Optional<String> getRecipientId() {
+			return absent();
+		}
+
+		@Override
+		public Optional<Sone> getRecipient() {
+			return absent();
+		}
+
+		@Override
+		public long getTime() {
+			return 0;
+		}
+
+		@Override
+		public String getText() {
+			return null;
+		}
+
+		@Override
+		public boolean isKnown() {
+			return false;
+		}
+
+		@Override
+		public Post setKnown(boolean known) {
+			return this;
+		}
+
+	}
+
 }