WS-ResourceTransfer implementation

[Mohammad N Fakhar]

Hi all, 

A few months ago, there was talk on muse-dev of implementing the 
reconcilation specs 
authored by Microsoft, HP, Intel, and IBM, and how to align them with WSRF

and WSDM. 
The first reconcilation spec, WS-ResourceTransfer, was published today;

as a member 
of the team that worked on this spec, I have been working on a reference

implementation 
of it and would like to contribute it to Muse. I'm not sure how/where it

should fit but 
I figure the development team can help with that. I've opened a JIRA item

with the code: 

https://issues.apache.org/jira/browse/MUSE-86

Here's a link to the spec:

http://www.ibm.com/developerworks/library/specification/ws-wsrt/

Since the WS-RP and WS-RT specifications are semantically similar , I 
created an early 
reference implementation of WS-RT, based on Apache Muse. The 
implementation is primarily 
a delegation layer, which serves WS-RT requests by delegating to Muse 
WS-RP capabilities. 
For example, a WS-RT Put request with QName dialect maps to a WS-RP 
SetResourceProperties 
operation with a Property dialect. Some WS-RT operations, however, do not

map directly 
to WS-RP operations, for example a WS-RT Put operation with XPath dialect

has no equivalent in WS-RP. For such operations, the delegation layer 
pre-processes the WS-RT request and breaks it down into WS-RP operations

that can be processed by WS-RP capabilities.

The delegation layer is designed so that Muse WS-RT Web services can be

exposed over WS-RT dialects just by adding capabilities to deployment 
descriptors.
This will allow developers to experiment with WS-RT with minimal effort

and can be
used as a co-existence strategy for those resources that may need to 
support
both WS-RP and WS-RT clients.

In addition to the server side delegation layer, I wrote a WS-RT client

side API that 
is symmetric to the WS-RP client API. It enables WS-RT clients to 
programatically invoke 
WS-RT webservices using WS-RT concepts such as fragments, expressions and

metadata.

I've also added a sample project that is similar to the existing samples

and a 
command line demo of it.

The sample takes a little bit of manual work to build and deploy right

now; if you want to see it in action
via a web app, an alphawork demo is available as well: 
http://wsi.alphaworks.ibm.com/wsrt/


thanks,
Mohammad N. Fakhar
IBM Software Group Strategy
Emerging Standards
Research Triangle Park, NC  USA
[EMAIL PROTECTED]
Phone: (919) 254-2104