Duncan
 
I am not any kind of guru here (at all!) but what you propose sounds
feasible.

I think it would be worth using a later version of Cocoon (2.1.8) as
the forms processing/validation has become a lot more sophisticated.
Best place to start is with the various Cocoon samples as they give a 
feel for what can be done.  Next best place is the mailing list archive ,
 as chances are someone has done something similar (I recall queries 
on web services, for example).  

As always, if you get to understand the fundamentals of what Cocoon
is doing - the sitemap and flowscript aspects are key here - then the
rest is "just details" (i.e. hard work).  There are really good people
here to hep if you get stuck with specific bits of code.

HTH (a bit)
Derek


>>> [EMAIL PROTECTED] 2005/12/14 07:59 PM >>>
Hi

We currently use Cocoon 2.0.4 running on an AIX box.

We have been asked to create an application that will be incorporated 
into an existing website that runs under Cocoon.
This application consists of several multi-page forms that have some 
tricky validation requirements. Data should be preserved in session 
until it is submitted.
The data is submitted to a business service (hosted outside Cocoon). It 
should also be able to handle and transform the resulting message 
returned from the business service.

Can someone out there suggest how this can be achieved (in simple terms 
please as we are still very much getting to grips with Cocoon!!!).
If you could also point us to examples etc then that would be even better!

Thanks in advance

Duncan




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