Re: [xml-dev] help request: incremental XSLT(-ish?) in javascript

[James Fuller <james.fuller.2007@gmail.com>]

u might find the emerging xcruciate server something that addresses
some of your requirements

xcruciate.co.uk

J

On Thu, Oct 8, 2009 at 8:33 PM, Thomas Lord <lord@emf.net> wrote:
> I am looking for a piece of software that I've
> come to suspect doesn't exist - but I thought
> I'd ask here as one way to double check.
>
> We are used to the idea of browsers receiving
> XML, retrieving a linked XSLT program, and applying
> that program to produce an HTML DOM for display.
>
> I am wishing for taking that one step further.
> I would like a client-side XSLT implementation
> that does that transform, but that also keeps around
> the XML.   I would like Javascript programs to be
> able to modify the XML DOM objects and to have those
> changes *incrementally* reflected in updates to
> the HTML DOM.
>
> I know that for arbitrary XSLT, such incremental
> transforms can not always be fast.   For example,
> it is trivial to write an XSLT program such that a
> single character change to a text datum in the XML
> causes the HTML to have to be completely regenerated
> from scratch.
>
> I do hope for a solution where it is easy to write
> a wide range of XSLT programs that *can* be updated
> fast, incrementally.   That is to say: I want good
> performance in the easy cases and don't care so much
> how the hard cases are handled.
>
> I would prefer XSLT but I suppose it is not essential.
> Something similar but non-standard is OK, if that's all
> there is.
>
> Why do I want this?  Well:
>
> I would like to build a system that roughly follows
> a "model-view-controller" pattern.   The XML will
> serve as model.   The HTML and some event handling hooks
> will serve as view.  The main logic of an application
> are the commands (in Javascript) that the view can
> trigger and which operate by having side effects on
> the XML (the model) - that "command system" of the
> application is the controller.
>
> Is there such a piece of software around (that is
> licensed as free software)?  My impression is that
> there is not - which I find somewhat surprising.
>
> Finally, one person I mentioned this to admonished me
> that I was proposing to use XSLT and Javascript in ways
> they were never intended for and were ill suited for.
> I could not get a clear sense from him of *why* he
> thought so, but that is what he said.  Is he right?
>
> Thanks,
> -t
>
>
>
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