[MOBY-dev] Binary data streaming

[Dmitry Repchevsky]

Hello Martin,

> What do you mean by "implement streaming"? I concluded that you meant
> "sending binary data from (or to) a moby service". Is is correct?
>   
yes it is.
> This is again a SOAP-based specification, meaning another way how to make an
> attachment (correct?).
>   
XOP is the XML way to reference a binary attachment for XML using a 
reference to it.
Even in theory it is not SOAP dependent, the only implementation I know 
(I may be wrong) is a MTOM that is for SOAP protocol.
I couldn't find an implementation for straight XML (because we need a 
transport for it).

> If the protocol for dereferencing is HTTP, we can use MIME type (content-type HTTP header) for
> references data.
>   
This is what XOP is about - the only problem is that it can not 
reference an external resource.

It would be great to have something based on Servlet + XML + XOP on 
java, but I looked at  JAX-RS (JSR-311) REST and there is nothing...

I had an idea, but afraid it has a problem with an implementation.

The idea is to use XML attachment (instead of binary one) and in those 
attachment put XInclude with a link to external document.
Such document itself would be an XML with a binary attachment.

So we would have:

External resource represented by XML (moby ontology class like 
MobyImage) + a binary attachment with an image data itself.
Then we have a main document with a MobyRef primitive that is encoded as 
an XML attachment where an attachment itself is an XInclude to the 
MobyImage.
This way the document is assembled into a standard moby message 
automagically:

The only problem is that XInclude works with a plain XML, I think...

Cheers,

Dmitry