| /* |
| * 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.data.metadata; |
| |
| import java.io.Serializable; |
| |
| /** |
| * This class represents a metadata for a partition. |
| * |
| * @param <K> the key type of its partitions. |
| */ |
| public final class PartitionMetadata<K extends Serializable> { |
| private final K key; |
| private final int partitionSize; |
| private final long offset; |
| |
| /** |
| * Constructor. |
| * |
| * @param key the key of this partition. |
| * @param partitionSize the size of this partition. |
| * @param offset the offset of this partition. |
| */ |
| public PartitionMetadata(final K key, |
| final int partitionSize, |
| final long offset) { |
| this.key = key; |
| this.partitionSize = partitionSize; |
| this.offset = offset; |
| } |
| |
| /** |
| * @return the key of this partition. |
| */ |
| public K getKey() { |
| return key; |
| } |
| |
| /** |
| * @return the size of this partition. |
| */ |
| public int getPartitionSize() { |
| return partitionSize; |
| } |
| |
| /** |
| * @return the offset of this partition. |
| */ |
| public long getOffset() { |
| return offset; |
| } |
| |
| @Override |
| public String toString() { |
| final StringBuilder sb = new StringBuilder(); |
| sb.append("key: "); |
| sb.append(key); |
| sb.append("/ partitionSize: "); |
| sb.append(partitionSize); |
| sb.append("/ offset: "); |
| sb.append(offset); |
| return sb.toString(); |
| } |
| } |