Question

I am developing the distributed application in CORBA Using the Java IDL provided by default in JDK , and of course , both client and server developed in Java.

I am maintaining the some object state on server.

Now, on client side I want to bring whole state (snapshot) of that object from server side.
and this is object is of some Java type .
As I cannot pass the whole object of any Java type from server to client, because of IDL definition and of course CORBA feature as it is language neutral.

One way I found, is using JSON

I will flatten the whole Java Object of any type into string and pass same to client using string data type, later on client I can deflatten the object from string.
also I can define the string type in idl.

but this adds the some processing for flattening/ deflattening on both sides

is there any other way to pass object from client? or may be I missed something?

Update:

Objects of Following types are transferred

class MyObject{ Map<String,String> object; }

Answer 1

You just have to define your MyObjects as CORBA objects. For that you’ll use the IDL. Your Map is a simple name,value list.

module Foo { 
  struct MapEntry { 
    string name;
    string value;
  }; 

  sequence<MapEntry> MyMap; 
  }; 
}; 

This will create an Array of MapEntry Objects in Java. If you want to remap them into a Java Map, feel free. This is the CORBA way of transferring a map of something. Create a struct, put it into a sequence, done.
This also works properly for other languages supported by CORBA (e.g., C++)