msgpack scala : How to pack a json string

[Bathily Didier]

Hi, 

I'm new to msg pack. I'm trying to pack a json string by my server (playframework) and get it as a json by my client (as3). 

Someone can help me on this please?

Thank you

Didier

[Tsuyoshi OZAWA]

Hi Bathily,

How about trying msgpack-scala?
This is a quickstart page for msgpack-scala.
http://wiki.msgpack.org/display/MSGPACK/QuickStart+for+Scala

Thanks,
- Tsuyoshi

[Bathily Didier]

Yes Tsuyoshi i'm using msgpack-scala but i didn't find a way to pack a json. mspack-scala serialize an object. Did you already use msgpack-scala? 

[Bathily Didier]

I think my question is stupid. msgpack is a serialization protocol, so I need to define a Template for play framework json api

[Tsuyoshi OZAWA]

Let me clarify what you'd like to do.

Do you want to transform a JSON object into a msgpack object on server?

Thanks,

- Tsuyoshi

[Didier Bathily]

I have an object of type play.api.data.json.JsValue (playframework 2 json API) which is a JSON and I wan't to pack it with msgpack and send it through the network. 

My question is : can I do this without creating some Templates for JsValue?  There is maybe a way to pack a json by its String value?

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[Tsuyoshi OZAWA]

> There is maybe a way to pack a json by its String value?

One straight way to do it is encoding by BASE64.

One concern in that case is performance - you need to deselialize JSON and BASE64 and msgpack objects.

If you have fixed schema, it is an alternative method translating JsValue into Scala object

and packing the scala object as msgpack.

I hope one of these methods helps you.

Thanks

- Tsuyoshi

[Didier Bathily]

Thank you very much Tsuyoshi, you gave me the answer. Performance is not a problem, so I will use the BASE64 trick and I don’t have a fixed schema.