serialization

问题 I want to be able to exclude a property when serializing using System.Text.Json.JsonSerializer. I don't want to use a JsonIgnore attribute everywhere I want to do this. I would like to be able to define the properties I want to exclude during serialization only, via some kind of Fluent API, which currently does not exist. The only option I was able to find is to define a JsonConverter and add it to the list of Converters on the JsonSerializerOptions that I pass to the Serialize() method like

问题 Hardest thing in Spark is Serialization imho. This https://medium.com/onzo-tech/serialization-challenges-with-spark-and-scala-a2287cd51c54 I looked at some time ago and I think I am pretty sure I get it, the Object aspects. I run the code and it is as per the examples. However, I am curious on a few other aspects when testing in a Notebook on a Databricks Community Edition account - not a real cluster BTW. I did check, confirm also on a Spark Standalone cluster via the spark-shell. This does

问题 I am using boost for serialization of data. This is how the classes are structured. 1) I have a Stage class This class holds vector data for the director class class Stage { public: std::vector<Director> directors; void AddDirector(Director dir) { directors.push_back(dir); } int GetDirectorSize() { return directors.size(); } Director* GetDirector(int number) { return &directors[number]; } private: friend class boost::serialization::access; template<typename Archive> void save(Archive& ar,

问题 Got this error when trying to serialize a set of errors: "ISerializable type 'System.Data.Entity.Infrastructure.DbUpdateConcurrencyException' does not have a valid constructor. To correctly implement ISerializable a constructor that takes SerializationInfo and StreamingContext parameters should be present." The constructor is in fact present in the base classes, but it is a protected member. Someone asked to see the JSON: { "$type": "System.Data.Entity.Infrastructure

问题 I'm trying to read some information from a file with ObjectInputStream method. For some reason, the file does not contain the information after the command executed. No error appears. This is my code : public boolean findUser(String user_id) throws Exception { try (ObjectInputStream objectInputStream = new ObjectInputStream(new FileInputStream(fILENAME))){ //System.out.println("Adsfasdf"); System.out.println(objectInputStream); Set<MarkoliaUser> users = (Set<MarkoliaUser>) objectInputStream

问题 I am using boost for serialization of data. This is how the classes are structured. 1) I have a Stage class This class holds vector data for the director class class Stage { public: std::vector<Director> directors; void AddDirector(Director dir) { directors.push_back(dir); } int GetDirectorSize() { return directors.size(); } Director* GetDirector(int number) { return &directors[number]; } private: friend class boost::serialization::access; template<typename Archive> void save(Archive& ar,

问题 I'm wondering if it possible to change structure of my JSON that im sedinding out. currenyly it looks like this: { "para_subject": { "discipline": "MATAN" }, "para_room": { "room": "210" }, "para_professor": { "user": { "username": "yyyy", "email": "yyyy.yyyy@gmail.com", "first_name": "yyyy", "last_name": "yyy" }, "middle_name": "xxxxxx" }, } what is the best way to change it to this: { "discipline": "MATAN", "room": "210", "para_professor": { "username": "yyyy", "email": "yyyy.yyyy@gmail.com

问题 I'm wondering if it possible to change structure of my JSON that im sedinding out. currenyly it looks like this: { "para_subject": { "discipline": "MATAN" }, "para_room": { "room": "210" }, "para_professor": { "user": { "username": "yyyy", "email": "yyyy.yyyy@gmail.com", "first_name": "yyyy", "last_name": "yyy" }, "middle_name": "xxxxxx" }, } what is the best way to change it to this: { "discipline": "MATAN", "room": "210", "para_professor": { "username": "yyyy", "email": "yyyy.yyyy@gmail.com

问题 I have a class which contains a property who's type is another class. For example: public class Outer { public string SomeStringProperty { get; set; } public Inner SomeClassProperty { get; set; } } public class Inner { public string InnerProperty1 { get; set; } public string InnerProperty2 { get; set; } } I want to convert an instance of the Outer class to a URL query string, and include the properties from the nested Inner class. For example, given an instance of Outer , such as: Outer

问题 I am new to kotlin but a veteran of scala . The former has impressed me so far. But at this moment I am working through a head scratcher - that the data class does not implement Serializable . How a class with that name could expected to not be routinely expected to be used in that manner eludes me. What are the technical challenge(s) that precluded that support? I'm interested because i'd like to create a wrapper. It seems that the expectation is to always provide a serializer() ? That is