Re: [Coefficient-devel] Asynchronous JavaScript -AJAX

[Miguel P. <mr_...@ho...>]

Pieter,

Thanks for pointing me in the right direction. The objective is to be able
to do a response.getWriter().write("some text") so the web browser can read
the response "some text".

I was not sure if I should modify CoefficientServlet or
CoefficientWebContext.


If you (or anyone on the forum) has any other idea, I would appreciate it.

Regards


-----Original Message-----
From: pieter van zyl [mailto:pv...@cs...] 
Sent: Wednesday, September 20, 2006 11:17 AM
To: Miguel Perez
Cc: coe...@li...
Subject: Re: [Coefficient-devel] Asynchronous JavaScript -AJAX

I don't know AJAX.

And now I am going to guess......

I would suggestion modifying CoefficientServlet.

Or
CoefficientServlet.execute() {..........
CoefficientWebContext ctx = new CoefficientWebContext(request,
response);
            interceptor.invoke(ctx);
            // synchronize with CoefficientContext (reset session
variables,
            // update cookies, forward if needed, etc...)
            ctx.synchronize(request, response);

            // Write out the page content
            ctx.getPage().process(response.getWriter());
..........
}

one could modify the response in page.process method, where we are
building and adding the page layouts.


Hope this helps a bit.....

On Tue, 2006-09-19 at 17:18 -0400, Miguel Perez wrote:
> I'm trying to write a javascript using AJAX to return some values from
> the server.
> 
>  
> 
> For example
> 
>  var req;
> 
>  
> 
> function validate() {
> 
>    var idField = document.getElementById("userid");
> 
>    var url = "validate?id=" + escape(idField.value);
> 
>    if (window.XMLHttpRequest) {
> 
>        req = new XMLHttpRequest();
> 
>    } else if (window.ActiveXObject) {
> 
>        req = new ActiveXObject("Microsoft.XMLHTTP");
> 
>    }
> 
>    req.open("GET", url, true);
> 
>    req.onreadystatechange = callback;
> 
>    req.send(null);
> 
> }
> 
>  
> 
> My question is how do I get the values back from coefficient.  I can
> execute the methods and a module but I don't have access to
> response.getWriter from ctx.
> 
>  
> 
> Do I need to write a next class, modify CoefficientServlet, or is
> there a way to do this via ctx (coefficientcontext)?
> 
>  
> 
> Any help would be deeply appreciated.
> 
>  
> 
> regards
> 
>  
> 
> 
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