1 /*
2 * Copyright 2014 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16
17 package io.netty.handler.codec.mqtt;
18
19 import io.netty.util.internal.StringUtil;
20
21 import java.util.Collections;
22 import java.util.List;
23
24 /**
25 * Payload of the {@link MqttUnsubscribeMessage}
26 */
27 public final class MqttUnsubscribePayload {
28
29 private final List<String> topics;
30
31 public MqttUnsubscribePayload(List<String> topics) {
32 this.topics = Collections.unmodifiableList(topics);
33 }
34
35 public List<String> topics() {
36 return topics;
37 }
38
39 @Override
40 public String toString() {
41 StringBuilder builder = new StringBuilder(StringUtil.simpleClassName(this)).append('[');
42 for (int i = 0; i < topics.size(); i++) {
43 builder.append("topicName = ").append(topics.get(i)).append(", ");
44 }
45 if (!topics.isEmpty()) {
46 builder.setLength(builder.length() - 2);
47 }
48 return builder.append("]").toString();
49 }
50 }