Java tutorial
/* * Copyright (c) 2016 IBM Corp. 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.cloudant.client.internal.util; import com.cloudant.client.api.model.Shard; 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 java.lang.reflect.Type; import java.util.ArrayList; import java.util.List; import java.util.Map; import java.util.Set; public class ShardDeserializer implements JsonDeserializer<List<Shard>> { public List<Shard> deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException { final List<Shard> shards = new ArrayList<Shard>(); final JsonObject jsonObject = json.getAsJsonObject(); Set<Map.Entry<String, JsonElement>> shardsObj = jsonObject.get("shards").getAsJsonObject().entrySet(); for (Map.Entry<String, JsonElement> entry : shardsObj) { String range = entry.getKey(); List<String> nodeNames = context.deserialize(entry.getValue(), DeserializationTypes.STRINGS); shards.add(new Shard(range, nodeNames)); } return shards; } }