| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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 org.apache.samza.system; |
| |
| /** |
| * The abstract class of all control messages, containing |
| * the task that produces the control message, the total number of producer tasks, |
| * and a version number. |
| */ |
| public abstract class ControlMessage { |
| private final String taskName; |
| private int version = 1; |
| |
| public ControlMessage(String taskName) { |
| this.taskName = taskName; |
| } |
| |
| public String getTaskName() { |
| return taskName; |
| } |
| |
| public void setVersion(int version) { |
| this.version = version; |
| } |
| |
| public int getVersion() { |
| return version; |
| } |
| |
| @Override |
| public int hashCode() { |
| final int prime = 31; |
| int result = Integer.hashCode(version); |
| result = prime * result + (taskName != null ? taskName.hashCode() : 0); |
| return result; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) |
| return true; |
| if (obj == null) |
| return false; |
| if (getClass() != obj.getClass()) |
| return false; |
| |
| final ControlMessage other = (ControlMessage) obj; |
| if (version != other.version) { |
| return false; |
| } |
| |
| if (taskName != null |
| ? !taskName.equals(other.getTaskName()) |
| : other.taskName != null) { |
| return false; |
| } |
| |
| return true; |
| } |
| } |