Java tutorial
/* * Copyright 2014 The Netty Project * * The Netty Project licenses this file to you under the Apache License, * version 2.0 (the "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. */ package io.netty.handler.codec.mqtt; import io.netty.util.internal.StringUtil; import org.apache.commons.lang3.ArrayUtils; import java.util.ArrayList; import java.util.Collections; import java.util.List; /** * Payload of the {@link MqttSubAckMessage} */ public class MqttSubAckPayload { protected List<MqttGrantedQoS> grantedQoSLevels; public MqttSubAckPayload(MqttGrantedQoS... grantedQoSLevels) { if (grantedQoSLevels == null) { throw new IllegalArgumentException("Empty grantedQoSLevels"); } List<MqttGrantedQoS> list = new ArrayList<>(grantedQoSLevels.length); Collections.addAll(list, grantedQoSLevels); this.grantedQoSLevels = Collections.unmodifiableList(list); } public MqttSubAckPayload(Iterable<MqttGrantedQoS> grantedQoSLevels) { if (grantedQoSLevels == null) { throw new IllegalArgumentException("Empty grantedQoSLevels"); } List<MqttGrantedQoS> list = new ArrayList<>(); for (MqttGrantedQoS v : grantedQoSLevels) { if (v == null) { continue; } list.add(v); } this.grantedQoSLevels = Collections.unmodifiableList(list); } public List<MqttGrantedQoS> grantedQoSLevels() { return grantedQoSLevels; } @Override public String toString() { return StringUtil.simpleClassName(this) + '[' + "grantedQoSLevels=" + ArrayUtils.toString(grantedQoSLevels) + ']'; } }