Java tutorial
/* * _ __ _ * | |/ /__ __ __ _ _ __ | |_ _ _ _ __ ___ * | ' / \ \ / // _` || '_ \ | __|| | | || '_ ` _ \ * | . \ \ V /| (_| || | | || |_ | |_| || | | | | | * |_|\_\ \_/ \__,_||_| |_| \__| \__,_||_| |_| |_| * * Copyright (C) 2019 Alexander Sderberg * * 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 xyz.kvantum.server.implementation; import com.google.gson.JsonDeserializationContext; import com.google.gson.JsonDeserializer; import com.google.gson.JsonElement; import com.google.gson.JsonObject; import com.google.gson.JsonParseException; import com.google.gson.JsonPrimitive; import com.google.gson.JsonSerializationContext; import com.google.gson.JsonSerializer; import xyz.kvantum.server.api.util.KvantumJsonFactory; import java.lang.reflect.Type; /** * GSON serializer for accounts. Will only expose ID and username (not data), so this can be used publicly */ public final class AccountSerializer implements JsonSerializer<Account>, JsonDeserializer<Account> { @Override public JsonElement serialize(final Account src, final Type typeOfSrc, final JsonSerializationContext context) { final JsonObject jsonObject = new JsonObject(); jsonObject.add("id", new JsonPrimitive(src.getId())); jsonObject.add("username", KvantumJsonFactory.stringToPrimitive(src.getUsername())); return jsonObject; } @Override public Account deserialize(final JsonElement json, final Type typeOfT, final JsonDeserializationContext context) throws JsonParseException { if (json instanceof JsonObject) { final JsonObject object = (JsonObject) json; return new Account(object.get("id").getAsInt(), object.get("username").getAsString(), ""); } else { throw new JsonParseException("Provided json not an object"); } } }