| /* |
| * Copyright 2014 Open Networking Laboratory |
| * |
| * Licensed 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 org.onosproject.store.cluster.messaging; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| import java.util.Objects; |
| |
| /** |
| * Representation of a message subject. |
| * Cluster messages have associated subjects that dictate how they get handled |
| * on the receiving side. |
| */ |
| public final class MessageSubject { |
| |
| private final String value; |
| |
| public MessageSubject(String value) { |
| this.value = checkNotNull(value); |
| } |
| |
| public String value() { |
| return value; |
| } |
| |
| @Override |
| public String toString() { |
| return value; |
| } |
| |
| @Override |
| public int hashCode() { |
| return value.hashCode(); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj == null) { |
| return false; |
| } |
| if (getClass() != obj.getClass()) { |
| return false; |
| } |
| MessageSubject that = (MessageSubject) obj; |
| return Objects.equals(this.value, that.value); |
| } |
| |
| // for serializer |
| protected MessageSubject() { |
| this.value = ""; |
| } |
| } |