2 * Sone - CollectionAccessor.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 static com.google.common.base.Joiner.on;
21 import static com.google.common.collect.FluentIterable.from;
22 import static net.pterodactylus.sone.data.Sone.TO_NICE_NAME;
24 import java.util.ArrayList;
25 import java.util.Collection;
26 import java.util.Collections;
27 import java.util.List;
29 import net.pterodactylus.sone.data.Sone;
30 import net.pterodactylus.util.template.Accessor;
31 import net.pterodactylus.util.template.ReflectionAccessor;
32 import net.pterodactylus.util.template.TemplateContext;
34 import com.google.common.base.Joiner;
37 * {@link Accessor} for {@link Collection}s that adds a couple of specialized
38 * properties that only work for collections that contain the right types.
41 * <dt>Returns the nice names of all {@link Sone}s in the collection, sorted
42 * ascending by their nice names.</dt>
45 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
47 public class CollectionAccessor extends ReflectionAccessor {
50 public Object get(TemplateContext templateContext, Object object, String member) {
54 Collection<?> collection = (Collection<?>) object;
55 if (member.equals("soneNames")) {
56 List<Sone> sones = new ArrayList<Sone>();
57 for (Object sone : collection) {
58 if (!(sone instanceof Sone)) {
61 sones.add((Sone) sone);
63 Collections.sort(sones, Sone.NICE_NAME_COMPARATOR);
64 return on(", ").join(from(sones).transform(TO_NICE_NAME));
66 return super.get(templateContext, object, member);