[Springframework-developer] Web Flow progress

[Erwin V. <erw...@er...>]

All,

We've been making very good progress on the web flow system the last few 
days. Things are shaping up for a preview release that might come as soon as 
next weekend!

The code is in good shape again and all JavaDoc is up-to-date. All samples 
are also working again.
For those with an interest in web flows, I fully recommend that you take a 
look at the code that is in CVS right now 
(http://cvs.sourceforge.net/viewcvs.py/springframework/spring/sandbox/src/org/springframework/web/flow/) 
and let us know what you think! Any input would be appreciated!

Issues left to work out (not necessarily for the preview release :):

* Conditional transitions: basic support is there (via TransitionCriteria 
interface and a simple OgnlTransitionCriteria implementation), but details 
have to be worked out:
    - how to integrate this into XML flow definitions?
    - scope precedence? or should all scopes be merged before being 
evaluated by the expression?

* Token based transitions (e.g. <transition on="countrySelected" 
to="register.${request.country}"/>): do we need this? There is no support 
for this at the moment.

* Does the RequestContext need to keep track of a history of events signaled 
during its lifecycle? It's not the case for the moment but would be simple 
to implement. Also, do we need a query interface to find an event parameter 
across all signaled events for a particular request? Are there any good 
use-cases for this?

* Do we need some convenience accessor on the RequestContext to find 
attributes in any scope: try request scope first, then fall back on flow 
scope? This would be simple to add.

Erwin Vervaet
erw...@er...