serialization

Dart - How to get Json object from Complex object Hierarchy

南楼画角 提交于 2019-12-25 04:25:42
问题 On Continuation to following SO Question/Answer :- How to get JSON serialized string using Dart Serialization I want to serialize complex object values in JSON, how can I achieve that using:- Map toJson() { } My class heirarchy is :- class Container { Containerthis.DPC_ID); String get Id => DPC_ID; String get LSDetailUrl => "http://www.indiavotes.com/pc/detail/$DPC_ID/$DB_STATEID/15"; List<GoogleMaps.LatLng> Coordinates; List<LSElectionResult> ElectionData; var DPC_ID; // how to extend

Object Autoconvert to Double with Serialization/GSON

倾然丶 夕夏残阳落幕 提交于 2019-12-25 04:24:19
问题 I ran into a problem when developing an application that uses Gson to serialize objects and deserialize them. However, I ran into a problem that I cannot explain the cause of and after a while, I narrowed down the problem to this SSCCE: import com.google.gson.Gson; /** * demonstrates the issue at hand */ public class Probs { public Probs () { //holds the byte array form of the JSON data byte[] info = new byte[1]; //get the JSON for a data object and store it in the byte array Gson gson = new

MassTransit: Message contracts, polymorphism and dynamic proxy objects

喜夏-厌秋 提交于 2019-12-25 04:18:09
问题 TL;DR On contract subscription, how can I get the raw message content or the original published object, rather than a dynamic proxy? I am having a bad time trying to create a modular application based on MassTransit. My idea is to have a Websocket server connected to queue, it reads events from the socket and inserts it in the queue as a "connection request", and reads events from the queue and send them to the sockets as "connection events". Both have a contract that allows the WS server

Why JsonConverter.WriteJson() never gets called, although JsonConverter.ReadJson() does get called?

不羁的心 提交于 2019-12-25 04:09:27
问题 Why my custom JsonConverter.WriteJson() method doesn't get called ? class MyType{ [JsonConverter(typeof(DocumentXamlDeserializer))] public string GuiData { get; set; } public string SimpleString; } Although the ReadJson does get called: public class DocumentXamlDeserializer : JsonConverter { public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) { writer.WriteValue(Gui.Handler.SerializeData()); } public override object ReadJson(JsonReader reader, Type

how do i serialize list variable of type <boost::shared_ptr<void *>>

余生颓废 提交于 2019-12-25 03:47:20
问题 I'm really not sure how do i serialize a list variable of type boost::shared_ptr <void *> inside a class or struct. Generally, i would go with same method that we generally use like struct A { std::list<boost::shared_ptr<void *>> mdb; } template<class Archive> void serialize(Archive &d,const unsigned int version) { d & mdb; // not sure that this would work } while compiling it does not give error but does not serialize at my end. 回答1: You don't. In all likelihood, the void* is a HANDLE (for

How to obtain an object from a string?

◇◆丶佛笑我妖孽 提交于 2019-12-25 03:47:10
问题 Say I have the following class class Test: def TestFunc(self): print 'this is Test::TestFunc method' Now, I create an instance of the class Test >>> >>> t = Test() >>> >>> t <__main__.Test instance at 0xb771b28c> >>> Now, the t.TestFunc is represented as follows >>> >>> t.TestFunc <bound method Test.TestFunc of <__main__.Test instance at 0xb771b28c>> >>> Now I am storing the Python representation of t.TestFunc to a string string_func >>> >>> string_func = str(t.TestFunc) >>> string_func '

Jackson serialization of abstract interface

眉间皱痕 提交于 2019-12-25 03:44:44
问题 I'm working with a framework that performs Java Jackson serialization of class Config with a field supplier that is an abstract interface Supplier<T> . The interfaces below are defined in the framework so I cannot change/add the annotations. public interface Supplier<T> { T get(); } public interface Calculator { } @Data @NoArgsConstructor public class Config extends Serializable { private Supplier<Calculator> supplier; } I have a concrete implementation of Supplier : class MySupplier

JsonGenerationException when serializing nested object using custom serializer in Jackson

泪湿孤枕 提交于 2019-12-25 03:33:16
问题 Here is the class that I want to serialize. public class ItemRow<T> { private String id; private List<T> items; } There are two variations that are allowed. ItemRow<String>, ItemRow<ItemRow> . In the latter case, it will be nested. eg: ItemRow item1 = new ItemRow("abc", Arrays.asList("item1", "item2", "item3")); String result = mapper.writeValueAsString(item1); System.out.println(result); should give { "abc":["item1","item2","item3"] } Now, the latter case ItemRow item2 = new ItemRow("cde",

Java - Serialization - NotSerializableException Issue

不羁岁月 提交于 2019-12-25 03:17:17
问题 I'm currently working on a student database using Java only and have two particular lists I would like to save. Students and Profiles(To login with). I'm currently testing out serialization on Students only to get it to work but have been getting a weird issue. My Student object classes and code are as follows: Student.java StudentsCollection.java Students creates my Student object(Self explanatory) and my StudentsCollection() instantiates a list of type Student which stores my Student

Is this method for HBase data storage correct?

雨燕双飞 提交于 2019-12-25 02:53:20
问题 Here what is want to do is i want to store and retrieve serialized data in HBase table and later i want to retrieve them as it is. I thought to follow method. Please tell me if i'm wrong. put.add(streamColumnFamily,streamColumnName,serializedData); Here serializedData attribute will be handle by HBaseSerialization class. what is want to is, is this method correct. will i be able to retrieve stored data as it was. (int as int, float as float, String as String etc) 回答1: Yes, the method is