Re: [wsrp-markup] Handling of attachments and/or large markup responses

[Carsten Leue <CLEUE@de.ibm.com>]

Mike - yes, in terms of performance it would make sense to transfer the
content and/or resources in a more efficient way than embedding it in the
SOAP body. Nevertheless we will still need to encode/decode them in one or
the other way.
The main problem I see here is the lack of a standard that is currently
widely implemented on the J2EE and .NET side. That's why I anted to ask the
group if they think that SOAP attachments of DIME will be the standard to
concentrate on.


Best regards
Carsten Leue

-------
Dr. Carsten Leue
Dept.8288, IBM Laboratory Böblingen , Germany
Tel.: +49-7031-16-4603, Fax: +49-7031-16-4401



|---------+----------------------------->
|         |           Michael Freedman  |
|         |           <Michael.Freedman@|
|         |           oracle.com>       |
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|         |           07/24/2002 02:01  |
|         |           AM                |
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  |       To:       interfaces <wsrp-interfaces@lists.oasis-open.org>                                                                                |
  |       cc:       WSRP-Markup <wsrp-markup@lists.oasis-open.org>                                                                                   |
  |       Subject:  Re: [wsrp-markup] Handling of attachments and/or large markup responses                                                          |
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Carsten,
   Besides the size issue you raise isn't there also a raw performance
issue (regardless of size)?  I.e. soap attachments
mean we don't have to marshal/unmarshal (and potentially decode) any
content hence performs best?  If so, shouldn't we be
considering requiring the use of soap attachments for transferring all
content from getmarkup?
    -Mike-


Carsten Leue wrote:

> I would like to open a discussion thread on the handling of attachments
and
> (possibly large) markup responses in WSRP.
> In some cases it will be necessary to transport large amounts of data in
> the context of a WSRP SOAP request. This occurs when
> - uploading a file (currently part of the request context)
> - returning markup (currently the markup is just a string. In some cases
> this might become large (e.g. > 100KB))
> - retuning state from the producer to the consumer
>
> encoding such large data blobs in SOAP message may pose problems, at
least
> in SOAP4J ist seems as if it was not possible to transfer more than 50KB
in
> a SOAP message.
> I would propose that we define the transfer of blobs like the file upload
> via an attachment mechanism. The two standards that are of interest are
> SOAP-Attachments (http://www.w3.org/TR/SOAP-attachments)
> DIME
> (
http://msdn.microsoft.com/webservices/understanding/gxa/default.asp?pull=/library/en-us/dnglobspec/html/dimeindex.asp
)
>
> The latter seems to be the most interoperable one. What is the opinion of
> the comittee?
>
> If we agree on using attachments then we could allow this also as an
option
> for embedding resources (images, etc) in the returned markup in addition
to
> letting the consumer proxy these resources or embedding a direct link.
Any
> opinions on this?
>
> Best regards
> Carsten Leue
>
> -------
> Dr. Carsten Leue
> Dept.8288, IBM Laboratory Böblingen , Germany
> Tel.: +49-7031-16-4603, Fax: +49-7031-16-4401
>
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