2 * Sone - PostReply.java - Copyright © 2010–2020 David Roden
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 package net.pterodactylus.sone.data;
20 import com.google.common.base.Optional;
21 import com.google.common.base.Predicate;
24 * A reply is like a {@link Post} but can never be posted on its own, it always
25 * refers to another {@link Post}.
27 public interface PostReply extends Reply<PostReply> {
30 * Filter that selects {@link PostReply}s that have a
31 * {@link Optional#isPresent() present} {@link #getPost() post}.
33 public static final Predicate<PostReply> HAS_POST_FILTER = new Predicate<PostReply>() {
36 public boolean apply(PostReply postReply) {
37 return (postReply != null) && postReply.getPost().isPresent();
42 * Returns the ID of the post this reply refers to.
44 * @return The ID of the post this reply refers to
46 public String getPostId();
49 * Returns the post this reply refers to.
51 * @return The post this reply refers to
53 public Optional<Post> getPost();