Line data    Source code

       1             : // Copyright (C) 2018 The Android Open Source Project
       2             : //
       3             : // Licensed under the Apache License, Version 2.0 (the "License");
       4             : // you may not use this file except in compliance with the License.
       5             : // You may obtain a copy of the License at
       6             : //
       7             : // http://www.apache.org/licenses/LICENSE-2.0
       8             : //
       9             : // Unless required by applicable law or agreed to in writing, software
      10             : // distributed under the License is distributed on an "AS IS" BASIS,
      11             : // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12             : // See the License for the specific language governing permissions and
      13             : // limitations under the License.
      14             : 
      15             : package com.google.gerrit.server.cache.serialize;
      16             : 
      17             : import static java.nio.charset.StandardCharsets.UTF_8;
      18             : import static java.util.Objects.requireNonNull;
      19             : 
      20             : import com.google.common.base.Converter;
      21             : import com.google.common.base.Enums;
      22             : 
      23             : public class EnumCacheSerializer<E extends Enum<E>> implements CacheSerializer<E> {
      24             :   private final Converter<String, E> converter;
      25             : 
      26         153 :   public EnumCacheSerializer(Class<E> clazz) {
      27         153 :     this.converter = Enums.stringConverter(clazz);
      28         153 :   }
      29             : 
      30             :   @Override
      31             :   public byte[] serialize(E object) {
      32           2 :     return converter.reverse().convert(requireNonNull(object)).getBytes(UTF_8);
      33             :   }
      34             : 
      35             :   @Override
      36             :   public E deserialize(byte[] in) {
      37           1 :     return converter.convert(new String(requireNonNull(in), UTF_8));
      38             :   }
      39             : }