If you're looking at the cvs repository, check out RemoteRequest.js in particular. It's an XMLHTTPRequest wrapper class that manages requests and does some behind the scenes magic.
An example:
var req = new RemoteRequest(service, method, param1, param2, ...);
req.setCompleteCallback(
function(request) {
var obj = request.getResultObject();
alert("The internet gave me an object => " + obj.blah());
}
);
req.send();
This fires off an asynchronous xmlhttp request with a specially crafted url. Apache handles the request and any data returned is run through a JSON parser and turned into a javascript object. The object can then be retrieved from within the anonymous callback.
This has worked well for us and basically just requires the XMLHTTPRequest wrapper class, a hand tuned JSON parser (in ILS/OpenSRF/src/javascript), and an Apache module that can turn the request into something meaningful for your framework.
-bill
-----Original Message-----
From: Code for Libraries on behalf of Peter Murray
Sent: Fri 6/10/2005 1:00 PM
To: [log in to unmask]
Cc:
Subject: SPAM: Re: [CODE4LIB] ajax
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Mike --
It is kinda hard to visualize, although I'd really like to try. Is
there a demo available somewhere?
Peter
On 6/10/05 12:22 PM, Mike Rylander wrote:
| <promotion type="shameless">
|
| If anyone feels like digging into an app that's extremely heavy with
| XMLHttpRequest stuff you may want to look at Evergreen, a.k.a
| Open-ILS. The entire staff client, which is written in XUL, and the
| current version of the OPAC are entirely "ajax" driven. We use it to
| connect, via an Apache module, to our back end cluster.
|
| http://open-ils.org/cgi-bin/viewcvs.cgi/ILS/Open-ILS/src/javascript/util/
|
| </promotion>
- --
Peter Murray http://www.pandc.org/peter/work/
Assistant Director, Multimedia Systems tel:+1-614-728-3600;ext=338
OhioLINK: the Ohio Library and Information Network Columbus, Ohio
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