| // Copyright (C) 2018 The Android Open Source Project |
| // |
| // Licensed 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 com.google.gerrit.server.notedb; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.gerrit.entities.EntitiesAdapterFactory; |
| import com.google.gerrit.json.EnumTypeAdapterFactory; |
| import com.google.gson.Gson; |
| import com.google.gson.GsonBuilder; |
| import com.google.gson.TypeAdapter; |
| import com.google.gson.stream.JsonReader; |
| import com.google.gson.stream.JsonWriter; |
| import com.google.inject.Singleton; |
| import com.google.inject.TypeLiteral; |
| import java.io.IOException; |
| import java.sql.Timestamp; |
| |
| @Singleton |
| public class ChangeNoteJson { |
| private final Gson gson = newGson(); |
| |
| static Gson newGson() { |
| return new GsonBuilder() |
| .registerTypeAdapter(Timestamp.class, new CommentTimestampAdapter().nullSafe()) |
| .registerTypeAdapterFactory(new EnumTypeAdapterFactory()) |
| .registerTypeAdapterFactory(EntitiesAdapterFactory.create()) |
| .registerTypeAdapter( |
| new TypeLiteral<ImmutableList<String>>() {}.getType(), |
| new ImmutableListAdapter().nullSafe()) |
| .setPrettyPrinting() |
| .create(); |
| } |
| |
| public Gson getGson() { |
| return gson; |
| } |
| |
| static class ImmutableListAdapter extends TypeAdapter<ImmutableList<String>> { |
| |
| @Override |
| public void write(JsonWriter out, ImmutableList<String> value) throws IOException { |
| out.beginArray(); |
| for (String v : value) { |
| out.value(v); |
| } |
| out.endArray(); |
| } |
| |
| @Override |
| public ImmutableList<String> read(JsonReader in) throws IOException { |
| ImmutableList.Builder<String> builder = ImmutableList.builder(); |
| in.beginArray(); |
| while (in.hasNext()) { |
| builder.add(in.nextString()); |
| } |
| in.endArray(); |
| return builder.build(); |
| } |
| } |
| } |