main.js

var xmlreader = require('cloud/xmlreader.js');
var HinduSports = Parse.Object.extend("HinduSports");

Parse.Cloud.job("job_hindu_sports", function (request, response) {
    return Parse.Cloud.httpRequest({
        url: 'http://www.thehindu.com/sport/?service=rss'
    }).then(function(httpResponse) {
        var someXml = httpResponse.text;
        xmlreader.read(someXml, function (err, res){
            if(err) {
                response.error("Error " +err);
                return console.log(err);
            }

            var listArray = [];
            res.rss.channel.item.each(function (i, item){
                var hinduSports = new HinduSports();
                hinduSports.set("link", item.link.text());
                hinduSports.set("title", item.title.text());
                hinduSports.set("pubDate", item.pubDate.text());
                //console.log("pubDate - "+ item.pubDate.text());
                listArray.push(hinduSports);
            });

            var promises = [];
            Parse.Object.saveAll(listArray, {
                    success: function(objs) {
                        promises.push(objs);
                        console.log("SAVED ALL!");
                    },
                    error: function(error) {
                        console.log("ERROR WHILE SAVING - "+error);
                    }
                });
            return Parse.Promise.when(promises);

        });
    }).then(function() {
            response.success("Saving completed successfully.");
            },function(error) {
            response.error("Uh oh, something went wrong.");
    });
});

Parse.Cloud.beforeSave("HinduSports", function(request, response) {
    //console.log("in beforeSave");
    var query = new Parse.Query(HinduSports);
    var linkText = request.object.get("link")
    var titleText = request.object.get("title");
    query.equalTo("link", linkText);
    query.first({
      success: function(object) {
        //console.log("in query");
        if (object) {
            //console.log("found");
            if(object.get('title')!==titleText){
                console.log("title not same");
                object.set("title", titleText);
                response.success();
            }
            else{
                console.log("title same");
                response.error();
            }
        } else {
            console.log("not found");
            response.success();
        }
      },
      error: function(error) {
        response.error();
      }
    });
});