serialization

问题 We have a distributed application, and our "managed" nodes have to sent information about "features" to the controller node. Our first approach was to simply send instances of some Map<Class, FeatureSet> . ( the FeatureSet class for valus can be ignored in the context of my question ) Now a coworker suggested in a review to avoid serializing instances of java.lang.Class , mainly for potential version incompatibility issues: over time, our controller nodes are replaced with newer systems,

问题 I need to create an instances an instance of java.lang.Class that is otherwise identical to classOf[MyClass] but also has a SerialVersionUID , which MyClass does not have. MyClass is a Scala-2.10 class. One problem is that in Java SerialVersionUID is a static final while in Scala SerialVersionUID since Scala does not have statics. If MyClass was a Java class I think I would be able do this using Javassist: val ctclass = javassist.ClassPool.getDefault().get("mypackagage.MyClass") val field =

问题 I am calculating some very large numbers using Python, and I'd like to store previously calculated results in Berkeley DB. The problem is that Berkeley DB has to use strings, and I have to store an integer tuple for the calculation results. For example, I get (m, n) as my result, one way is to store this as "%d,%d" % (m, n) and read it out using re . I can also store the tuple using pickle or marshal . Which has the better performance? 回答1: For pure speed, marshal will get you the fastest

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 6 years ago . I want to know the disadvantages of making a class serializable in java; disadvantages in terms of memory allocation and accessibility. any link on this topic will be helpful Thanks in advance. 回答1: disadvantages

问题 I have a class with a dictionary attribute I want to serialize. I've read that serializing a dictionary isn't directly possible so I serialize/deserialize a list I then transform to a dictionary. It works, but i would like to know if there is a proper way to do this. [Serializable] public class Album { private List<Photo> photos = new List<Photo>(); [XmlArray] public List<Photo> Photos { get { return photos; } set { photos = value; } } private Dictionary<string, Photo> dicoPhotos = new

问题 In sockets I have written the client server program. First I tried to send the normal string among them it sends fine. After that I tried to send the hash and array values from client to server and server to client. When I print the values using Dumper, it gives me only the reference value. What should I do to get the actual values in client server? Server Program: use IO::Socket; use strict; use warnings; my %hash = ( "name" => "pavunkumar " , "age" => 20 ) ; my $new = \%hash ; #Turn on

问题 Server side - C# or java Client side Objective C I need a way to serialize an object in C#\java and de-serialize it in Objective C. I'm new to Objective C and I was wondering where I can get information about this issue. Thanks. 回答1: Apart from the obvious JSON/XML solutions, protobuf may also be interesting. There are Java//c++/python backends for it and 3rd parties have created backends for C# and objective-c (never used that one though) as well. The main advantages are it being much, much

问题 I am using the following methods to serialize and deserialize .NET objects: public static string SerializeToBase64(object data) { var stream = new MemoryStream(); var formatter = new BinaryFormatter(); formatter.Serialize(stream, data); stream.Position = 0; return Convert.ToBase64String(stream.ToArray()); } public static object DeserializeFromBase64(string data) { var stream = new MemoryStream(Convert.FromBase64String(data)); stream.Position = 0; var formatter = new BinaryFormatter(); return

问题 This is my json { "accessType":"Grant", "spaces":[{"spaceId":"5c209ba0-e24d-450d-8f23-44a99e6ae415"}], "privilegeId":"db7cd037-6503-4dbf-8566-2cca4787119d", "privilegeName":"PERM_RVMC_DEV", "privilegeDescription":"RVMC Dev", "privilegeType":"Permission" } And here's my class: public class ProfilePrivilege { public AccessType AccessType { get; set; } public Guid PrivilegeId { get; set; } public string PrivilegeName { get; set; } public string PrivilegeDescription { get; set; } public

问题 hashCode of an object has to be consistent for that object throughout one execution of the application-- for any object o, o.hashCode() should return the same int value. However, this doesn't have to be from one run-time to another: o.hashCode() can return some other value and this is perfectly alright by the specs. HashMap calculates the right bucked based on the hashCode value. My Q is: how is this value change between one session to another handled? Does serialization have features to