serialization

问题 I'm writing a package in go to send messages between services, using a specific type of transport. I'd like the package to not understand the type of messages being sent. My first thought is to serialize the message object into json, send that, deserialize on the receiving end, and pass the go object (as an interface{} ) to the subscribing code. The serialization isn't a problem, but I don't see how the generic package code can deserialize the message since it doesn't know the type. I thought

问题 I'm writing a package in go to send messages between services, using a specific type of transport. I'd like the package to not understand the type of messages being sent. My first thought is to serialize the message object into json, send that, deserialize on the receiving end, and pass the go object (as an interface{} ) to the subscribing code. The serialization isn't a problem, but I don't see how the generic package code can deserialize the message since it doesn't know the type. I thought

问题 For reasons that I will gloss over, I need to set aside space of a fixed size, and then use boost serialization to store an object there. The choice of archive format is arbitrary, and portability is not a concern. The class is fairly complex (members include fundamental types, arrays, pointers, and child classes) and guaranteed to grow over time. Does anyone have worthwhile sizing guestimates they trust? Space is important, but it's not at a premium. I'm looking for relatively simple answers

问题 Please note: Although this question seems similar to this one I am asking a slightly different question. I am serializing/deserializing POJOs into JSON via Jackson. I am trying to get instances of my UserStatus enum to (de)serialize nicely and am attempting via: @JsonIgnoreProperties(ignoreUnknown = true) @JsonInclude(JsonInclude.Include.NON_NULL) enum UserStatus { Unregistered, Activated, Deactivated, Locked @JsonValue String toValue() { // TODO: ??? } } If my understanding of Jackson is

问题 I'm trying to write an update method that processes JSON. The JSON looks like this: { "organization": { "id": 1, "nodes": [ { "id": 1, "title": "Hello", "description": "My description." }, { "id": 101, "title": "fdhgh", "description": "My description." } ] } } Organization model: has_many :nodes accepts_nested_attributes_for :nodes, reject_if: :new_record? Organization serializer: attributes :id has_many :nodes Node serializer: attributes :id, :title, :description Update method in the

问题 I have a BigInteger serialized to a file by a Java program using the writeObject method from ObjectOutputStream . Can I deserialize it in C#? I tried using the java.math and java.io classes of vjslib , but I get an exception: InvalidClassException the class does not match the class of the persisted object for cl = java.lang.Number : __SUID = -8742448824652078965, getSUID(cl) = 3166984097235214156 Any ideas? 回答1: Do you have control over the serialization step from Java? If so, I would suggest

问题 I have the following Model with serialized variables: create_expenses.rb class CreateExpenses < ActiveRecord::Migration def change create_table :expenses do |t| t.belongs_to :user, index: true t.string :ref t.integer :year t.integer :month t.text :traject_names, Array t.text :vehicles_used, Array t.text :nb_kms, Array t.text :parkings, Array t.text :trains, Array t.text :taxis, Array t.text :metros, Array t.text :meals, Array t.text :hotels, Array t.text :natures, Array t.text :amounts, Array

问题 A JSON string like: [ "a", "b", "c" ] Would usually be deserialized to List<String> . But I have a class that looks like this: public class Foo { private List<String> theList; public Foo(List<String> theList) { this.theList = theList; } public String toString() { return new ObjectMapper().writeValueAsString(theList); } // ... more methods } Now I want to deserialize the above JSON string into an object of class Foo like: Foo foo = new ObjectMapper().readValue(jsonString, Foo.class); How is

问题 I am writing a C++/CLI wrapper for an old MFC application, so far i have been able to read most of the data and convert the same into C# readable format. As of now i am only struggling with reading data and am worried will writing data back to old MFC code affect serialization ? Can you guys share/mention any other risks i might face while writing C++/CLI wrapper for MFC code ? Thanks for your inputs. this question is a continuation of "Redirecting data from MFC CArchive to boost::archive:

问题 I have the following models: class Appeal < ActiveRecord::Base belongs_to :applicant, :autosave => true belongs_to :appealer, :autosave => true end class Appealer < ActiveRecord::Base has_many :appeals, :autosave => true end class Applicant < ActiveRecord::Base has_many :appeals end What I want is for every appealer to hold a reference to the applicant of his last appeal so I modified Appealer model to: class Appealer < ActiveRecord::Base has_many :appeals, :autosave => true def last