2 * Sone - ReplyGroupFilter.java - Copyright © 2010–2013 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.template;
20 import java.util.HashMap;
21 import java.util.HashSet;
22 import java.util.List;
26 import net.pterodactylus.sone.data.Post;
27 import net.pterodactylus.sone.data.PostReply;
28 import net.pterodactylus.sone.data.Sone;
29 import net.pterodactylus.util.template.Filter;
30 import net.pterodactylus.util.template.TemplateContext;
33 * {@link Filter} implementation that groups replies by the post the are in
34 * reply to, returning a map with the post as key and the list of replies as
37 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
39 public class ReplyGroupFilter implements Filter {
45 public Object format(TemplateContext templateContext, Object data, Map<String, Object> parameters) {
46 @SuppressWarnings("unchecked")
47 List<PostReply> allReplies = (List<PostReply>) data;
48 Map<Post, Set<Sone>> postSones = new HashMap<Post, Set<Sone>>();
49 Map<Post, Set<PostReply>> postReplies = new HashMap<Post, Set<PostReply>>();
50 for (PostReply reply : allReplies) {
51 Post post = reply.getPost();
52 Set<Sone> sones = postSones.get(post);
54 sones = new HashSet<Sone>();
55 postSones.put(post, sones);
57 sones.add(reply.getSone());
58 Set<PostReply> replies = postReplies.get(post);
59 if (replies == null) {
60 replies = new HashSet<PostReply>();
61 postReplies.put(post, replies);
65 Map<Post, Map<String, Set<?>>> result = new HashMap<Post, Map<String, Set<?>>>();
66 for (Post post : postSones.keySet()) {
67 if (result.containsKey(post)) {
70 Map<String, Set<?>> postResult = new HashMap<String, Set<?>>();
71 postResult.put("sones", postSones.get(post));
72 postResult.put("replies", postReplies.get(post));
73 result.put(post, postResult);