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From "Sanjiva Weerawarana" <sanj...@watson.ibm.com>
Subject Re: WSDL musings
Date Thu, 23 Aug 2001 19:07:33 GMT
Hi Waqar,

Please take a look at WSIF- that's precisely what it does.
    http://www.alphaWorks.ibm.com/tech/wsif

WSIF needs an Axis plug-in so that services which have a SOAP
binding can be invoked using Axis as well. Sam has promised to
write it (its very straightforward). WSIF also allows one to
switch from say Apache SOAP to Axis without impacting client
code (there are some difficulties with custom serializers though).

Sanjiva.

----- Original Message -----
From: "Sadiq, Waqar" <waqar.sadiq@eds.com>
To: <axis-dev@xml.apache.org>
Sent: Tuesday, August 21, 2001 2:29 AM
Subject: RE: WSDL musings


>
> If you are taking requirements for WSDL support in Axis, then here is one.
> I believe that the business process orchestration on languages such as
WSFL
> will play a significant role.  These process engines require a dynamic
> invocation mechanism.  During the course of executing a business process
> engine, the process engine may retrieve WSDL for the target web service
from
> some source.  A flexible engine will be able to invoke the target
operations
> on the target web service dynamically, without statically generated stubs.
> It would be great if the process engine is not burdened with the task of
> having to parse WSDL to figure our how to make the call.  In order to be
> partly blind to how the call needs to be made, meta data is required.  For
> those familiar with CORBA-DII, the meta data came from the interface
> repository.  For web services, all that meta data is in the WSDL document
> for the target service.  This requirements is partly being addressed by
the
> two JSR's (JSR 101 & 109) and also by WSIF. How about Axis supporting
this?
>
> Thanks,
>
> Waqar Sadiq
> EDS EIT ESAI - Enterprise Consultant
> MS H3-4C-22
> 5400 Legacy Drive
> Plano, TX 75024
>
> phone:     +01-972-797-8408 (8-837)
> e-mail:    waqar.sadiq@eds.com
> fax:       +01-972-605-4071
>
>
>
> -----Original Message-----
> From: Glen Daniels [mailto:gdaniels@macromedia.com]
> Sent: Monday, August 20, 2001 1:00 PM
> To: 'axis-dev@xml.apache.org'
> Subject: WSDL musings
>
>
>
> I'd like to get a more general WSDL generation mechanism going, which can
> take into account different providers, and also changes to the description
> caused by deployed Handlers.  It seems to me that the good way to do this
is
> to have an editWSDL(MessageContext) method on Handler, and then use the
> exact same process to invoke handlers that we do when actually processing
a
> message.  That way, whatever dispatch mechanism you have in place (custom,
> URLMapper, JWSHandler...) will work to decide on the service, and the
"core"
> WSDL will be generated by the provider.
>
> Can I get people's opinions on this?  I want to do something to generalize
> WSDL composition ASAP, so if I don't hear anything from other committers
in
> the next day or two, I'm going to move ahead with this idea and we'll see
> where it goes.
>
> I think it's a good plan; the only other way I might do it is by fleshing
> out ServiceDescription a little bit more (i.e. adding space for headers,
> bindings, etc) and having the handler chains create one of those, which
> would then get turned into WSDL...
>
> Glen Daniels
> Macromedia
> http://www.macromedia.com/
>                                 Building cool stuff for web developers


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