I think the Java library has a "TSimpleJsonProtocol" that does something like
this.
It shouldn't be too hard to do the same for C++. I think the biggest
complication
is that JSON does allow trailing commas.
--David
Rush Manbert wrote:
> Hi,
>
> I have copied and hacked TJSONProtocol.cpp to make a version that just
> generates standard JSON when an object is written.
>
> By this I mean that if I had this struct definition:
>
> struct ExtendedStatus {
> 1: i32 status,
> 2: i32 state,
> 3: i32 percentComplete,
> 4: i32 elapsedMsec,
> 5: string statusDescription,
> 6: string exceptionMsg,
> }
>
> my protocol would serialize it as this:
>
> {"status":2,"state":5,"percentComplete:40,"elapsedMsec":1200,"statusDescription":"Talking
> to the server","exceptionMsg:""}
>
> (I wrote this by hand, so it might not be totally correct. The point is that
> it doesn't encode types, etc. It just uses the member names.)
>
> If my Javascript side had a standard object prototype definition for
> ExtendedStatus, then I can serialize C++ thrift classes from C++, transmit
> them to my Javascript code, and evaluate the JSON to create an ExtendedStatus
> object and use it.
>
> What I'm missing is the code generation for the prototypes.
>
> By any chance, has anyone done this already, and would they be willing to
> share? Otherwise I guess we'll see about hacking the C++ generator to make
> one, but that means adding a new generator type, or maybe just making the cpp
> code generator also generate the prototype JS file automatically.
>
> Better still, has anyone secretly written the Javascript code generator that
> would work with the TJSONProtocol implementation?
>
> Or does anyone have another idea of how I can achieve this? I have written a
> few of these by hand, but it's easy to make mistakes and you need to know
> when the thrift IDL file changes.
>
> - Rush
