| /** |
| * 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; |
| |
| /** |
| * Converter used to encode/decode value associated with a column prefix or a |
| * column. |
| */ |
| public interface ValueConverter { |
| |
| /** |
| * Encode an object as a byte array depending on the converter implementation. |
| * |
| * @param value Value to be encoded. |
| * @return a byte array |
| * @throws IOException if any problem is encountered while encoding. |
| */ |
| byte[] encodeValue(Object value) throws IOException; |
| |
| /** |
| * Decode a byte array and convert it into an object depending on the |
| * converter implementation. |
| * |
| * @param bytes Byte array to be decoded. |
| * @return an object |
| * @throws IOException if any problem is encountered while decoding. |
| */ |
| Object decodeValue(byte[] bytes) throws IOException; |
| } |