Re: [ANN] SISCweb v0.5 - Stateful Scheme framework for J2EE

On 4/12/07, Warren Henning <[email protected]> wrote:
[...]
> I'm glad to see SISCweb is still under development.

Thanks. Really, time is a factor, but commitment is not.


> I remember first seeing SISCweb many months ago. Alessandro, could you
> briefly explain how  the project has grown during its lifetime?
[...]

Well, up until v0.33, development focused on providing a reliable
continuation management engine and a well-rounded set of conveniences
(markup, sql, state tracking, interactive development, et al.).

Release v0.4 was mostly about resource bounding to avoid decreasing
performance under load. (AFAIK this weakness is still present in PLT
and SUnet.)

This last release I think finally "gets right" two areas that I still
found a little warty: the interface to JSP/Servlets and state
management.

As to the former, it's now very easy to use the JSP+JSTL for
presentation, for instance. You can pass a list of strings from Scheme
and find a collection of Java strings ready for your <c:forEach> tag
on the JSP side.

As to the latter, web cells give you variables that behave "properly"
as users backtrack and branch, and do so with a very clear semantics
and a mostly unobtrusive syntax.

Hope this helps.
___
Alessandro

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