Java tutorial
/** * Copyright (c) 2014 Baidu, Inc. All Rights Reserved. * * 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.baidu.rigel.biplatform.ac.util.deserialize; import java.lang.reflect.Type; import com.baidu.rigel.biplatform.ac.minicube.CallbackLevel; import com.baidu.rigel.biplatform.ac.minicube.MiniCubeLevel; import com.baidu.rigel.biplatform.ac.minicube.UserCustomLevel; import com.baidu.rigel.biplatform.ac.model.Level; import com.baidu.rigel.biplatform.ac.model.LevelType; 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; /** * level??? * * @author xiaoming.chen * */ public class LevelDeserialize implements JsonDeserializer<Level> { @Override public Level deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException { if (json.isJsonObject()) { JsonObject levelJsonObj = json.getAsJsonObject(); if (levelJsonObj.get("type") != null) { LevelType levelType = LevelType.valueOf(levelJsonObj.get("type").getAsString()); if (levelType.equals(LevelType.CALL_BACK)) { return context.deserialize(levelJsonObj, CallbackLevel.class); } else if (levelType.name().equals(LevelType.USER_CUSTOM)) { return context.deserialize(levelJsonObj, UserCustomLevel.class); } else { return context.deserialize(levelJsonObj, MiniCubeLevel.class); } } } return null; } }