This blueprint is supposed to be connected upstreams to an ajaxwrapper which feed data from the Upcoming.org events site API, so it is kind of specialized. However it is a good template for when you need to do some similar scraping.

---

BLUEPRINT(
"~01E0DFBB311ED2450cA5AF88A762A653BA",
[
 ["xml_json_in", "onJsonXml", 10]
],
[
 "collection_out"
],
function (Class) 
{
    Class.prototype.onJsonXml = function(msg)
    {
	var coll = [];	
	var n, event, events;

	try {
	    events = msg.children;
	    n = events.length;
	} catch (ex) {
	  this.error(ex, "malformed JSON RSS output");

	    return;
	    /*****************************************************************/
	}
	
	
	for (i = 0; i < n; i++) {
	    event = events[i];
	    if (event.attributes) {
	      coll.push({name:event.attributes["name"],
			    text_content:event.attributes["description"],
			    lat:parseFloat(event.attributes["latitude"]),
			    lon:parseFloat(event.attributes["longitude"]),
			    date:[new Date(event.attributes["start_date"].replace(/-/g, "/") + " " + event.attributes["start_time"]),
				  new Date(event.attributes["end_date"].replace(/-/g, "/") + " " + event.attributes["end_time"])]});
	    }
	}

	this.postMessage("collection_out", coll);
    };

}, "Upcoming.org XML JSON to Collection");