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From Andrus Adamchik <>
Subject Re: work on ROP
Date Thu, 17 Dec 2015 07:39:41 GMT
> Cayenne I think this will be counterproductive. We'll be rein

Sorry hit send too soon :) This wasn't supposed to be there. Essentially our Cayenne/protocol
separation happens at this interface:

I guess what you are proposing is splitting ClientConnection into a 2-part stack:

Serialization Handler (Objects in / Objects out) -> Binary Protocol Adapter (Stream in
/ Stream out) ?


> On Dec 17, 2015, at 10:31 AM, Andrus Adamchik <> wrote:
> Cayenne I think this will be counterproductive. We'll be rein
>> On Dec 17, 2015, at 10:24 AM, Aristedes Maniatis <> wrote:
>> On 17/12/2015 6:05pm, Andrus Adamchik wrote:
>>> So how about implementing HttpClientConnection with JAX-RS? It will take care
of HTTP(S) as the wire protocol and will provide very clean pluggability layer (MessageBodyReader/MessageBodyWriter).
I very much like JAX-RS API, which works on both client and server. And certainly wouldn't
want to reimplement all this from scratch. I think this should be compatible with protobuf
(and maybe with Hessian), as well as JSON or anything else. 
>>> One thing I am not sure about is whether we can wrap HTTP/2 support around this?
>> I'm unclear as to why Cayenne should have any knowledge of the connection at all.
Why should Cayenne care whether the connection between the client and server is HTTP, HTTP2,
files on disk, unix sockets or email mime attachments?
> Cayenne doesn't, but Cayenne needs to have access to an object that does. ClientConnection
is this object now. 
>> I'd like a blob or stream of serialised data passed up to my application. Then the
app can decide how to transport, compress, encrypt and authenticate it.
>> Can we create an interface which encapsulates just the data stream?
> We can. It is not incompatible with JAX-RS idea. JAX-RS layer though will need to know
about HTTP details.
> Andrus

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