Hi Magesh,
"
The standard code won't give you a "standard" JSON representation because it
needs to carry the ThriftID information. Maybe more, because it assumes that
the other side of the conversation is a piece of Thrift code that needs to
reconstruct the Thrift objects.
If you want to use the JSON protocol to talk to a Thrift service, or to freeze
dry objects that can be reconstituted later, then you need that standard
implementation so that the Thrift metadata is there.
If you just want to export a Thrift object into a "non-Thrift" equivalent
Javascript object, that is possible, but you need to hack the protocol. I did
this for a project of mine and I think I still have the code around, but it's
based on an old version of Thrift and I think the JSON protocol has been
changed since I wrote it. Let me know if you want it and I can make it
available.
- Rush
On Mar 13, 2013, at 2:15 AM, Magesh Dhasayyan wrote:
> Hi,
>
> I'm trying to use thrift for an application that uses JSON. For example
> I've listed below a sample thrift struct (Foo) and it's usage in a C++
> program. I want the output of the program to be {"bar": 1024} and NOT
> {"1":{"i32":1024}}. Is it possible using thrift libraries?
>
> """
> // file: hello_world.thrift
> struct Foo {
> 1: i32 bar;
> }
>
> // file: hello_world.cpp
> #include <iostream>
> #include <thrift/transport/TBufferTransports.h>
> #include <thrift/protocol/TJSONProtocol.h>
> #include <thrift/protocol/TProtocolException.h>
> #include <gen-cpp/hello_world_types.h>
> int main() {
> namespace atp = apache::thrift::protocol;
> namespace att = apache::thrift::transport;
> boost::shared_ptr<att::TMemoryBuffer>
> transport(new att::TMemoryBuffer());
> atp::TJSONProtocol protocol(transport);
> Foo foo;
> foo.bar = 1024;
> foo.write(&protocol);
> std::cout << transport->getBufferAsString()
> << std::endl;
> }
>
> // file: JSON-output.txt
> {"1":{"i32":1024}}
> """
>
> Looking at the comments in
> thrift-0.9.0/lib/cpp/src/thrift/protocol/TJSONProtocol.h, I suspect it's
> not possible. But just wanted to check with thrift experts before I drop
> the idea.
>
>
> Thanks,
> Magesh
