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Subject: Re: [wsrp] [WSRP-IMPL] Thoughts on WSRP Open Source Implementatation...

   Though there is undeniable value for portlet developers to have early access

to a portlet container that hides the complexity of our protocol and more
specifically the one you cite (a JSR 168 container) I think we need to
balance this effort with our need to have compliance/conformance tests
that ensure interoperability.  I suspect there will be a number of efforts
this fall/winter where individual vendors build similar solutions as you
suggest if only to provide a platform for their extensions.  With the
growing complexity of our protocol, particularly in relation to the
probable combinations via which it can be presented (i.e. read various
ports), it seems likely that at a minimum "bugs" will be introduced in specific

implementations if not valid differences in "interpretations" [including your
How do you suggest the TC/Expert Group verify the correctness of your
prototype?  How do you suggest that vendors implementing WSRP will
verify the correctness of their implementations?  Should there be at
least an equivalent effort to produce a validation suite?  Could IBM, given
its leadership role in both WSIA and WSRP [and its sheer numbers in each
group] take a lead in developing this as well?

Thomas Schaeck wrote:

> Dear WSRP TC Members,
> I've written up some initial thoughts on the way towards the open source
> implementation.
> Also, I've got a commitment from IBM to do a part of the work required for
> the open source implementation, see the end of this e-mail.
> WSRP Open Source Implementation Proposal
> ----------------------------------------
> Home: Apache Jakarta
> Purpose:
> Provide a framework for WSRP producers that allows for simple
> implementation and deployment of WSRP services.
> Integrate with the JSR 168 reference implementation, allow to publish and
> expose portlets as WSRP services.
> Provide examples and tools to help implementing WSRP services.
> Provide WSRP Portal Consumer and simple Consumer for testing WSRP services.
> Programming Language:   Java
> Application Server:           Apache Jakarta Tomcat
> SOAP Implementation:    Apache XML Axis
> WSRP Programming Model: WSRPlets (simple servlets exposed as WSRP services)
>                         Portlets (JSR 168) exposed as WSRP services
> Scope:
> Producer side:
> - Framework/Runtime for WSRP Producers based on Tomcat
> - Integration with JSR 168
> - Various Example WSRP Services to teach the public how to
>   write WSRP services based on the WSRP framework
>   (e.g. simple Flight Schedule, Stock Quote Service,
>   News Service, ...)
> Consumer side:
> - Simple WSRP Client
> - Portal Client based on JSR 168 Reference Implementation
> - Stateless Consumer ?
> Proposed Roadmap:
> Keep implementation in WSRP TC until Spec is well defined and
> implementation is reasonably complete, then open-source the code in a new
> open source project. Go towards this goal in three steps:
> Phase 1. Prototype and Demo based on early WSRP draft as of September
> Finish for 3rd Face-to-Face Meeting September, 9th.
> Distribute implementation to TC members.
> Phase 2. Complete Implementation of Final Draft for WSRP 1.0 Specification
> as available in November
> Finish for 4th Face-to-Face Meeting November 11th.
> Distribute implementation to TC members.
> Phase 3. Open Source WSRP Implementation
> Finish by January 2003, complying to WSRP 1.0 Specification
> Found Open Source Project in January and donate initial code to Open Source
> Community
> IBM Contribution:
> -----------------
> To enable a quick start for the WSRP open source implementation, IBM is
> willing to do the following work:
> Initiate the new Open Source Project at Apache Jakarta with the charter to
> implement and maintain a free WSRP implementation and potentially tools,
> e.g. for publishing WSRP services to UDDI.
> Provide and fund the project lead for the new Apache open source project.
> Implement a modular, servlet-based framework for WSRP producers that will
> allow WSRP services to use JSPs and taglibs for rendering markup, integrate
> with the JSR 168 reference implementation and be able to expose portlets as
> WSRP services and donate that as a starting point for the Open Source
> Project to cover the "Framework for WSRP Producers" and "Integration with
> JSR 168" parts of the scope proposed above.
> IBM wants to provide working prototypes for phase 1 and 2 (see above) to
> the TC and probably also via alphaworks
> IBM may provide the source code for phase 1 and 2 prototypes to the
> interested WSRP/WSIA TC members under an IBM CDA.
> Please send your comments flagged as [WSRP-IMPL].
> As mentioned in the other e-mail, I'll put this up as the main topic for
> the next bi-weekly call, Thursday next week.
> Best regards,
> Thomas
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