Java tutorial
/* * Copyright 2012-2014, Continuuity, Inc. * * 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.continuuity.loom.codec.json.current; import com.continuuity.loom.admin.ClusterDefaults; import com.continuuity.loom.codec.json.AbstractCodec; import com.google.common.reflect.TypeToken; import com.google.gson.JsonDeserializationContext; import com.google.gson.JsonElement; import com.google.gson.JsonObject; import com.google.gson.JsonParseException; import com.google.gson.JsonSerializationContext; import java.lang.reflect.Type; import java.util.Set; /** * Codec for serializing/deserializing a {@link com.continuuity.loom.admin.ClusterTemplate}. */ public class ClusterDefaultsCodec extends AbstractCodec<ClusterDefaults> { @Override public JsonElement serialize(ClusterDefaults clusterDefaults, Type type, JsonSerializationContext context) { JsonObject jsonObj = new JsonObject(); jsonObj.add("services", context.serialize(clusterDefaults.getServices())); jsonObj.add("provider", context.serialize(clusterDefaults.getProvider())); jsonObj.add("hardwaretype", context.serialize(clusterDefaults.getHardwaretype())); jsonObj.add("imagetype", context.serialize(clusterDefaults.getImagetype())); jsonObj.add("dnsSuffix", context.serialize(clusterDefaults.getDnsSuffix())); jsonObj.add("config", context.serialize(clusterDefaults.getConfig())); return jsonObj; } @Override public ClusterDefaults deserialize(JsonElement json, Type type, JsonDeserializationContext context) throws JsonParseException { JsonObject jsonObj = json.getAsJsonObject(); Set<String> services = context.deserialize(jsonObj.get("services"), new TypeToken<Set<String>>() { }.getType()); String provider = context.deserialize(jsonObj.get("provider"), String.class); String hardwaretype = context.deserialize(jsonObj.get("hardwaretype"), String.class); String imagetype = context.deserialize(jsonObj.get("imagetype"), String.class); String dnsSuffix = context.deserialize(jsonObj.get("dnsSuffix"), String.class); JsonObject config = context.deserialize(jsonObj.get("config"), JsonObject.class); return new ClusterDefaults(services, provider, hardwaretype, imagetype, dnsSuffix, config); } }