| /** |
| * 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.hadoop.yarn.server.timelineservice.storage.common; |
| |
| import java.io.IOException; |
| /** |
| * Encodes and decodes column names / row keys which are long. |
| */ |
| public final class LongKeyConverter implements KeyConverter<Long> { |
| |
| /** |
| * To delegate the actual work to. |
| */ |
| private final LongConverter longConverter = new LongConverter(); |
| |
| public LongKeyConverter() { |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.apache.hadoop.yarn.server.timelineservice.storage.common.KeyConverter |
| * #encode(java.lang.Object) |
| */ |
| @Override |
| public byte[] encode(Long key) { |
| try { |
| // IOException will not be thrown here as we are explicitly passing |
| // Long. |
| return longConverter.encodeValue(key); |
| } catch (IOException e) { |
| return null; |
| } |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.apache.hadoop.yarn.server.timelineservice.storage.common.KeyConverter |
| * #decode(byte[]) |
| */ |
| @Override |
| public Long decode(byte[] bytes) { |
| try { |
| return (Long) longConverter.decodeValue(bytes); |
| } catch (IOException e) { |
| return null; |
| } |
| } |
| } |