| /* |
| * 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.nemo.runtime.executor.datatransfer; |
| |
| import org.apache.nemo.common.punctuation.Watermark; |
| |
| import java.io.Serializable; |
| |
| /** |
| * This contains a watermark and the src task index. |
| * It is used for transferring the watermark between tasks. |
| */ |
| public final class WatermarkWithIndex implements Serializable { |
| private final Watermark watermark; |
| private final int index; |
| |
| public WatermarkWithIndex(final Watermark watermark, final int index) { |
| this.watermark = watermark; |
| this.index = index; |
| } |
| |
| public Watermark getWatermark() { |
| return watermark; |
| } |
| |
| public int getIndex() { |
| return index; |
| } |
| |
| @Override |
| public String toString() { |
| final StringBuilder sb = new StringBuilder(); |
| sb.append(watermark); |
| sb.append(" from "); |
| sb.append(index); |
| return sb.toString(); |
| } |
| } |